Messages & Notes From
rsgbtech

0 - 30Mhz 100w Dummy Load Homemade
0.3mm fluxed solder
1:1 Voltage or Current BALUN?
1/2 size g5rv installation
1.2Ghz (23cms) Equipment Help.
1.4 MHz Crystal Filters
1/4 wave slotted balun.
1/8W through hole resistors
1% inductors
1 second pulsing on 80m
10:1 scope probes
10 metre ssb sets being sold at CB shops
10 MHz crystals
10 watt limit
10945 RADAR Book
10GHz Horn Antenna
SYMMETRICOM UCCM GPS 10MHz Frequency/ Time Receiver OCXO
10M asymmetric dipole dimensions?
[Fwd: 10M propagation was DJ4VM Quad Balanced Line Feed Query]
10w power amp
12 Volts (Was: Just a little moral tale.)
12F617, PicKit-2 and MPASM
12v Connectors
12v Connectors PANEL MOUNT
12V Linear Actuator Info Required
12V shack battery advice please
13.8V PSU power requirement when 'off'
13.8V PSU power requirement when 'off' - now even more OT
13.8V PSU power requirement when 'off' - now OT
137MHz NOAA Reception- End of Life?
143.050 GRAVES Radar
144MHz 24 Volt Relay
144MHz Beacons
144Mhz in C5
144MHz Preamp
144MHz Preamp & Sequencer
144MHz Yagi
145 Mhz QRM
146-147MHz & Bandplans - FAQ Document Available
146mhz data projects ??
147MHz prohibited areas
14MHz signal [1 Attachment]
160/80 'Fan Vertical'
Re : 160m QRM
160m receive loops
16F Family PICs, New enhanced instruction set
16SWG Hard Drawn Wire
16x8 character set
17m interference
18th edition regs
19 inch rack mounting
19 set power supply:
1968 RCA Receiving Tube (Vlave) Handbook
1990s Coastal Radio Stations
19inch Rack Mounting
1GHz amplifier
2.4 GHz Broadband-Hamnet mesh
2.4GHz Isolator
2.4Ghz Mouse
2 K Multiturn pot
2 meter beacons using JT65B
2 metre vhf yagi
2 X 813 amp heater transformer
2010 International Space Colloquium
2011 Yearbook / CD
2016 ITU Regulations
20dB attenuator
20m interferance now on 10M
20m interferance now on 10M
20m interference (now on 10m?)
20m Last night !
20w RGB Led Module
23 cms info required
23cm Antenna Switches
23cm transverter
23cms Mobile vetical antenna
240V/230V AC in BT and similar vehicles?
27V switched mode PSU
28 mhz interference
28 MHz yagis
Mediterranean Bouys...28MHz?
28mhz,Full wave Delta loop
28Volt Coaxial Relays
29.600 MHz buzz
2K Multi-Turn Pots.
2m/4m dual band mobile antenna?
2m 5/8 or 7/8 whip?
2m/70cm vertical antenna -- links
2m/70cm vertical antenna -- links
2M AMSAT Pre-Amp - TX Switching
2m and 70cm satellite deployments
2m bandpass filters
2m beam suggestions
2m beams
2m CW Olympic ban
2m FM simplex channels
2m Folded dipole
2m Interference
2m Interference OFCOM
2m Jaybeam
2m/marine antenna
2m Noise
2M qrm
2m Quad Supplier?
2m Snake Oil or the Perfect 144MHz DX companion ?
2m splatter
2m/VHF MB antenna
2Metre 17 element Tonna Antenna
2N3819 fets
2N3866 Replacement - an update
2SC998 (and awatronics)
3.533MHz Still there...
Flex pcb was 3-D printing
30m Crystals
32kHz crystal oscillators
3533 Khz Signal
3577 kHz musical modulation
3781 Current vs Voltage baluns
3CM Xverter
3d printers with built in scanners
3D printing discussion?
3D printing discussion?
3D printing software
3kw 1:1 choke Balun
G3ZRS Linear amp book and 3mm copper tube
3SK121 GASFET
4/6 beam
4 Element quad for two metres.
4 Element quad for two metres.
4 Square Hybrid Coupler
4 Square Phase...?
4 Square Seperation
Limited Height Radiators & 4 Squares
4-stroke engine help - fixed!
4-stroke engine help - fixed!
4 way edge connector [1 Attachment]
400mV Peak to Peak
40m QRM
40m Short 80 Antenna
43' vertical on upper HF bands
432MHz PA Module
432MHz PA Module
433MHz Oil Tank Transmitter
446MHz ... CQ DX ?
450-ohm ribbon with stranded conductors?
450 ohm twin feed in wet weather
450 ribbon feed to Balanced Termination Folded Dipole?
455 kHz I.F filters substitution Kenwood to Icom radios?
472KHz TX Antenna
48 volt SMPSUs
48 way Connector
48V 20A PSU
4a. Real-Time short delays in VB6
4cx250 amp testing (& G3OIT SK)
4cx250 amp testing (& G3OIT SK)
4cx250 amp testing - and about to drift onto another topic
4m amp using SD2931 protection ideas wanted
4m amp using SD2931 protection ideas wanted
4m antenna suggestion
4m antenna suggestion
4m band extension?
4NEC2
5/8 wave vertical for 20m
5-Hole Paper Tape Equipment
5 Mhz bandpass filter
5 Mhz bandpass filter
50/70mhz amplifier with a 4cx250b
50 MHz propagation
50 MHz RDF ?
50 ohm balanced feeder
50 ohms or 75 ohms ??
50 or 75 ohms
$50sat Technical Challenge for Radio Amateurs
51/1 pocket tx -OP3 RX, mkXV RX
51/1 pocket tx Plus some links
5867A Amplifier
5m plole
5MHz /M operation
Rhombics and SWR bridges [was 5wire transmission line]
6 pin Yaesu / Kenwood DC power connectors
600 metres
6070 kHz
60Hz synchronous motor
60m coverage and FlexRadio
6cm
6JS6C supplier?
6m repeater
7.2MHz Resonators wanted!
70 MHz antenna changeover relay
70 MHz RX sensitivity
70cm mixed mode helix (Was PSK31 satellite)
70cms Frequency accuracy
70cms in Channel Tunnel area
70cms in Channel Tunnel area 'Chuffing' QRM
70cms power splitter for 23cm
70MHz Push Pull 10W Linear Amp Design.
741 op-amp destruction?
741 with 50 ohms in
75 khz noise across all bands - Found the culprit!
75 khz noise across all bands - Found the culprit!
756pro
7HW helical filters
7MHz 4 Square
7MHz Quarter Wave Vertical & 4 Square
8 pin microphone plugs and sockets
80m Christmas Light Interference cured.
80m helical a tenna - October RADCOM p26.
80m Trap
80m UK ssb telephony frequencies?
Earth radials for 80m vertical
813 AMPLIFIER
813 hf amplifier woes
8m band (40MHz) - please
8mm Hollow aluminium bolts
9:1 BALUN Losses
9:1 Balun & Transmission Line Parameter Calculator
9:1 BALUN Losses
9:1 current mode balun
9MHz Crystal Filter
TV detector vans - was A 'Loony' Idea?
A bit of technical nostalgia
A Curious Experiment
A down side to tropo
A good frequency counter kit
A good read
Logarithmic scales (was A Keyer Speed Question)
A Modified K3 in the 2013 ARRL DX Contest
A new form of QRM ?
A NEW VNA
A noise problem
A plea for help
A plea for help
A Poor Meta-to-Metal Contact
A Poor Metal-to-Metal Contact
A question about ELSIE installation
A request for other users.
Oops: A Rigol DSA815-TG Viewer Anyone?
A Seeker after Merit
A slight case of wind...??
Foundation and 2m/70cms (was: A Sobering Thought)
A sort of follow on on the valve receiver design thread
A strange antenna
A Technical / Licensing Query
A word of warning
Centre insulator for A3S 40m add-on
A3S Beam problem - maybe fixed
A3S Beam problem - maybe fixed
Abbreviations in RadCom - 'ATU'
Abbreviations in RadCom - 'ATU'
About Off Centre Fed Dipoles
AC/DC Equipment
Account Problems
Accurate and reliable NTP servers?
Acer X3990 ?
Acoustic Intermodulation
ACRONYMS
AD8307 at audio frequencies
AD8307 dbm power meter
AD8307 was PC PSU
AD9854 100MHz DDS - control software
Adapter Flange
Additional sound card
Gap Filling Adhesive
Adjusting trap dipoles advice please
ADRET 740A Signal Generator
ADSL splitter question
advancement
advancement [OT]
advice for antaners for kenwood 10w rig
Advice on a 2m/70cm Vertical
Advice on linear amp design
Advice on P.A. System
Advice on use of P channel FET, please
Advice please regarding power to lcd monitor.
Advice pse - books
Aerial Analysers
Aerial Bracket (was Digest Number 2403)
Aerial noise question
Aerial noise question - baluns
Aerial Rotator on Battery Power
Aerial self-capacity
Aerial theory
aerials/antennas
AFC before varicaps
Ageing of components.
AGM 17th April 2010
AH-2b Whip to Military Antenna Base
AIM4170 Antenna Analyser & Smith Chart Tutorials
AIM4170 Presentation -- open-wire feeder TDR scan
AIM4170 Resources Page makeover
Air cored toroid former material
Air Ministry 2514
aircraft drawings request
Aircraft ILS receiver information
Aircraft scatter
Airspaced variable capacitors
Airspy SDR and GPS
Airspy SDR Maximum input power and dynamic range
Alfa SPID Rotators
ALiminium Hollow 8mm bolts
Alinco DX70TH Transceiver
Alinco EDC-133 charger
All bands dead - enhanced VLF
All bands dead today >2MHz
[Almost] Free SMT Components
Alochrom 1200 protective coating for aluminium enclosures
Alpha VLF transmitter report
Altron CM35 Telescopic Tiltover Mast
Altron mast mounting base
Altron mast mounting base
aluminium corrosion
Aluminium enclosure supplier?
Aluminium film on insulation between attic floor and bedroom ceilings.
Aluminium M8 Hollow bolts
Aluminium project boxes
Nested Aluminium Tube
AM BC breaktrough in DC Receivers
AM modulating mosfets
AM TX solid state
Amateur licence training
Amateur NBFM practice
Amateur Radio in Space - UK Astronaut Tim Peake KG5BVI launches Dec 15
Amateur Radio Insurance
Amateur Radio Space Presentations in Guildford
Amatuer bands xtals
Ameritron AL 811 Tunes up on 160 and 80
Amidon Toroids
'Chinese' solder stations
'Copters and aerials
'Copters and antennas.
'Hakko' Solder Station Mystery
'The VHF/UHF DX Book' is now a free download
'Voice Keyer 1.7
Amp fault finding
"44" useful reference about HAM Speak
"44" useful reference about HAM Speak
"Additional loss due to SWR"
Duplex super-regen (was "Catching spies")
"Concrete" advice
"e" marking on transceivers fitted in vehicles U.K.
"Hackspace" promoting homebrew- Facilities for Amateurs to use?
"HAMNET" in the UK?
" Mains signalling " on 198Khz
"NOSintro --TCP/IP over Packet Radio" now available as a free download
"Passive I/Q for HF" Radcom article July 2017_question
"Safety at Work"
"Tank Whips" (was Polyweave aerial wire)
"The other side of the PLT debate" article on Southgate ARC Web
"The Thing" listening device
"White space" broadband
Amplifier chassis wanted
Amplifier Classes
Amplifier Problem....
Amplifier QSK project - Sanity Check requested
Amplifier relays
Amplifiers and ALC Overshoot
Re; Amplitude modulated CB comes to the UK
AMSAT-UK 2012 Colloquium Programme On Line
AMSAt-UK Colloquium 2015 – Call For Speakers
AMSAT-UK Colloquium Videos Now Available Online
AMTOR kit board
AMU capacitors
An on topic answer to Online Poll about Analogue Repeater Use
An unexplored facet of Amateur Radio
An unknown PA strip, anyone recognise this description?
An unknown PA strip, ---/ Exam venues
Analogue Design challenge
Analogue Repeater CTCSS
Analogue Repeater CTSS
Use of Analogue Repeaters
And finally, a single shot Opera data decode via the moon
And now for something technical
And now something completely different to phonetics
Anderson Power Pole Accessory Source in the UK - Boat Connectors
Anderson Power Pole Accessory Source in the UK - Boat Connectors
Anderson Power Pole Orientations
Anderson Powerpole Connectors
Android App for SDR reception on the go
Andy's Data column re Software techniques
Andy's RadCom article, re AADE Filter Design program.
Andy Talbot's Column in Radcom: Eb0
angle of radiation
ANN: New owner of TS-590 Family Resources Page
ANNOUNCE: NEW G3NRW IC-7300 RESOURCES PAGE
ANNOUNCE: Welcome to G3NRW 2017
Announcement -- TS-590S TechNote: SSB Audio Handling v1.0
Announcing Audio590 for TS-590 audio management
Announcing CAT590: Generating and Monitoring TS-590S CAT Commands and Responses
Announcing CAT990: A tool for Kenwood TS-990S CAT control over the Internet.
Announcing CATfix -- a Christmas present for Kenwood radio owners
Announcing Remote990 -- Another Christmas present for Kenwood owners
Announcing the 160m Band Utilization Chart - 26 Jan 2012
Another huge X-class flare
Another Source of severe interference
Another switch mode PSU tale
Another useful tool for the ham radio workshop ....
Anritsu Handheld Vector Network Analyzer
- HF antenna advice
Antenna's for Field day
Antenna's for Field day QUESTION!
Antenna Analyser and detection Circuits.. Comparison Links
Antenna Analyser and detection Circuits.. Comparison Links
Antenna Analyser necessary?
antenna analyser project, arduino
Antenna analysers
Antenna and mounts
Antenna bandwidth [was De-oxidizing copper wire]
Antenna construction advice
Antenna(e)
Another improved antenna idea for you 49:1 or one using 60:1 balun
Antenna input circuits
antenna mast
Antenna mast - wall thickness
Antenna Matching: PhD Paper
Antenna Matching: PhD Paper
Antenna Modelling and VHF ZL Specials
Antenna modelling request
Antenna noise issue - help!
Antenna performance
Antenna Polarisation
Antenna puzzles (2) and (3)
Antenna puzzles (2) and (3)
Antenna relay for R7000
Antenna Rotator
Antenna(s) question
Antenna Simulation
Antenna splitter for LF.
Antenna support - wall thickness?
Antenna Switching with more than one radio
Antenna traps for 5MHz
Antenna vibration and wind induced failures.
Antenna wind ratings
Antenna wire
Antenna Woes
Antennas and 'fashion'
Antennas and Maximum Power Transfer Theorem
Antennas Info resource - Link to pdf
Antennas near schools
Antex 690D/660A soldering irons
Fw: [Bulk] ANTEX CTSC 30W - connections?
Antex soldering station
Fw: Anthorn LORAN frequency?
Anti seize grease for soldering iron tips.
Anti seize grease for soldering iron tips--straying off topic
Any (ex) Storno Engineers on the Group?
Any experience reporting excessive AC line voltages?
Any FPGA /PLA experts for a simple project ?
Any FT-847 expertise?
Fwd: Any Radio Astronomers here?
Anyone got Call books for 1991, 92, 93 or 94
anyone has a TS850 please?
Anyone have a MML432-100 Amp?
Anyone know a cheap source of a small quantity of nitrogen, or maybe dry air?
Anyone used Microwave oven transformers for H.T. supply?
AOR Proto AR7070
Apologies.
APRS 'GURUs' , especially TinyTrak on the Group?
APU 48 Switching Rectifier
AR22 Rotator
Archer Rotator Control Box Inside Cog
Arduino anybody?
arduino battery supplies
Arduino Development
Arduino VFO & SDR shields
Are you up for a challenge?
Army Loop Tuner
Arrival angles [was Trapped Antennas]
ARRL CD ROM Picture Resolution
ARRL Frequency Measurement Tests
ARRL Handbook - AF signal generator, Dip Meter (modified)
Assistance required with micrwave modules MM4001
Atatchments to group
ATEX Standards help?
Atlantis Away
Programmable attenuators
Attenuator Construction
Attenuator for TX to make signal source for RX testing
Programmable attenuators
Attenuators - success!
Attenuators - woops
Optimal value for ATU components.
ATU software
Fw: ATUs versus AMUs
Audio cavity question
Audio DSP software / translate
Audio DSP software / translate
audio files
Audio FSK IMD tests
Audio Power IC
Audio Spectrogram & Passive Radar
Audio Streaming- it is for Radio, honest.
Audio test signal for SSB transmitter linearity
Audio zero crossing switch
Audiology question
August PW Coax cable article
Austin Transformer & E/VLF
Australian Government 'IPS Radio and Space Services'
MAR-3 Availability or alternatives.
Available Width/ Necessary Bandwidth
AVO Multiminor problem
AW: USB thermometers anyone?
B.N.OS 12/40A PSU
b/w of GPS antennas
Back on technical, 3 reciving antennas to 2 recievers
background QRM on 10MHz
Bad coax
Post Office Splice was badly made wire antennas.
badly made wire antennas & G5RV & baluns
badly made wire antennas. Emergency joint
Chelmsford Talk - Launching and Tracking of 434 MHz Balloons
Balloons and Amateur radio
It is me, or us this "balun" design flawed?
BALUN Building
balun construction
Balun identification
Balun Test
Balun Transformer
Baluns and remote ATUs
Baluns and remote Auto ATUs
baluns/ununs/G5RV
baluns/ununs/G5RV
Band data information
Band plans
Band Saw Tyres
Band Stop Crystal Filter
Band Utilization Charts: all buttoned up
2m bandpass filters
2m bandpass filters
Bandplan released for 146 - 147MHz
146-147MHz & Bandplans - FAQ Document Available
Bandstop Crystal Filter
Baofeng Handhelds
Baofeng/Pofung GT-3TP - correct Chirp software?
Baofeng UV-5 DTMF Tone fault
Base for G-Whip Multimobile
Batron BT62005P LCD help wanted
Book ISBNs. Bats' band plan
Peukert's law - Lead Acid Batteries
Battery Corrosion
Battery Identification
Battery less communication
Battery-less short range communications
Battery-to-battery battery charger
BBC engineering
BBC programme about speech and vocoding
BBC RADIO 4/WORLD SERVICE
Fw: BBC transmissions locked to atomic frequency standards
BBC - Twisted Waves - SM5DFW
BC band QRM check Solar PV inverter
Be Aware - Active Scam
WSPR on 2m? (Beacons & propagation)
Beam support line
BEAMA RCD Handbook
Belcom Liner 2 Transceiver mod
Believing eBay descriptions!
Bench DMM recommendations?
Bench Mark
Bending a G5RV Antenna
Bending Plastic Sheet
Bent elements
Beta and hairpin match
Beware, be very aware, of using ancient tantalum capacitors
Beware BT Internet Users (Off topic but important)
Beware Windows
Beware Windows/COMport/mouse hazard!
BF964 Pinout
BG smart metering.
Trask style balun - was biconical aerial matching
Big / little endian conversion in VB6
Big TX's
Big TXs
Bilateral MMIC amplifiers
Binocular Ferrite Cores
Bipolar Transistors
Bird 43 Slugs and spares in the UK
Bird Dual Wattmeter VSWR monitor model 4342.
Bird Meters
Bird Plug-in repair
Bird Termaline
Bit of long shot , 2m zl specials
Bouncing Blackberry
Blackstar Nova Counter Circuit?
#BLOAT
Bluetooth headset
Bluetooth Modules- Anyone experimenting with them?
BNC Connector for RG174
BNC Plug
BNC plugs
BNOS 12/20P
BNOS 24/10P Power Supply Circuit
BNOS amp info / help please
BNOS Amplifiers
BNOS DC PSU 12/40A
BNOS Power supply 12/6
BNOS PSU type 12/12A
Board to board connectors
Boiler shut down.
Bonding PME and RF earths together
Book ISBNs. Bats' band plan
Book ISBNs. Bats' band plan
Bookboon.com
Boonton 92 RF millivoltmeter chopper replacement
Boot for PL259
Bound volumes RadCom - free
Braun SE600Digi
Breathing New Life Into Classic Marconi Radios
re Bricomm safetune
Bridge Rectifier Capacitor Voltage?
Broadband Noise
Broadband noise interference
BROADBAND VIA POWERLINE CABLES
broadcast breakthrough
Broadcast HD TV
Broken URL's (underlined links)
BS7909
BST tuneable capacitors - anyone tried 'em?
BT Diverse 1010 DECT phone
BT Email Account Holders NOTE!
BT Home Hub and Port Forwarding - I think
BT Infinity robustness
BT survey re Home Networking
BT wall bracket
BT WiFi Remote Admin Disables HH5 Wifi
btinternet.com re Bricom safetune
btinternet POP3/SMTP
Budget mini beam for 20m?
building a LISN
Building and Testing antenna power dividers
[Bulk] Acoustic Intermodulation
[Bulk] CTR-1 Transceiver
[Bulk] Fuses
[Bulk] Learning about PICs.
[Bulk] Polyweave aerial wire
[Bulk] Power in contests
[Bulk] The new face of Amateur Radio
Bulkhead N-Type Connector / Metal hole punch
Bulkhead SO-239 fittings
Bunker and Submarine communication
Burns SD12 frequency standard
Burst type QRM ??.
Re Bury or Elevate Coax
Buttons for Push Switches- Help!
Buying an HF rig - Yaesu FT-902DM or FT-1000MP Mark V ??
C.M. Howes Crystal calibrator -- GQRP SPRAT INDEX Issues 1-160
C.M. Howes Crystal calibrator -- GQRP SPRAT INDEX Issues 1-160
C Type RF Connector
CA736
CA736N device
Cable clips
Dipole bandwidth (was Cable Diameter)
Cable Impedance
Cable Labelling
calculating turns on toroid, QRP atu, L match, compact like miracle whip
CALCULATION OF COMMON MODE CHOKE IMPEDANCE
Calculation of effective ERP?
Calculation Utilities
Calibrating a 9914 Counter/10MHz GPS refs
Calibration
Call for Papers - 2013 SARA Western Regional Conference
Call seeker Plus Data file format
callbook 1965/66
Callbook details & Old Callsigns
Calling G3LEQ
Callsigns in WSJT
Cambridge and District Amateur Radio Club Rally - 4th March 2012
cambridge anntenna noise bridge not working
Can't 'Reply To' group messages
Can't obtain 20m crystals for the RSGB Centenary PSK Receiver
Can anyone help?
Can you hear me mother?
Can you help please?
Can you help please? (Oscilloscopes)
Can YOUR CLUB help bring the NRC into being ?
Cantenna
Capacitance of a sphere
Capacitance units
CAPACITOR DRIVE MOTOR
Capacitor Electrolyte Damage/Repair
CAPACIUTOR DRIVE MOTOR
CAPCO SPC300
(Fwd) Captchas (if that's what they're called)
Car Bluetooth and HF...
car installation
Carbon fiber fishing poles - Ae support ?
Carbon fibre fishing poles - Ae support ?
Carrier near 1836 KHz
Case for SSPA
casting antenna insulators
Catapults & Lines
Cathode envelope feedback
Cathode envelope feedback (was Number of QSOs per bandwidth)
cathode follower impedance
Cause for Concern
Causing RFI Interference to my own BT Smart Hub ADSL EMC Problem
N-Type chassis socket for Yaesu: was Caveat Emptor
Cavities
CB radio circuit diagrams FOUND !
CB Rules & Regulations ?
CE/EMC compliance for model trains
CE Marking
CE markings - the genuine and the Chinese
CENELEC FprEN 50561-1
Censorship
Centenary NoV
Centenary receiver problem stage 1
Centenary Receiver - whats the inductor?
centre zero meter
Ceramic disc vs metal foil capacitors
Ceramic Filters
Ceramic Resonators for Ladder Filters ?
Changes to Moderation Team
Charing Cross rule
Chassis Bashing
Cheap Chinese Spectrum Analyser
Cheap frequency counter- GY560
cheap LC meter
Cheap N plug gotcha
[uk-vhf-contesting] Cheap relays for rf switching.
Checking out unmarked antenna traps.
Chelmsford Talk - Launching and Tracking of 434 MHz Balloons
Chelmsford Talk - WSPR and 500kHz, 136kHz, 9kHz VLF
Chemical rawl bolts and T&K's
Chemistry Question (Off topic for radio)
Chimney Mount
Chinese 45W RF linear kits
Chinese Ebay DDS Modules
Chinese SMPSU output filter
Chirp Sounder
Choice of ATU location - flexibility and reduced RFI
Choice of Coax for mast
Circuit analysis program needed
Circuit Breaker tripping in Consumer Unit
Circuit drawing, simulation and PCB design software?
Circuit Lab
circuit or manual for Heatherlite Explorer 300W 2m linear?
circuit software
NOT CIRCULAR POLARISATION But twisted vortex radio waves
Cirkit transverters and Pye PA
Cisco 6500 router PSU
Clansman
Clarification on who can operate my station
clark mast spares
Class A Amplifier using Amperex 5867A
Class X and Y capacitors
Cleaning aluminium Alumibrite
Cleaning up the shack - GM3SEK talk
Clip-on ferrite
Closure of Recent Non-Technical Threads
CN-801HP Power meter (take 2)
CN810HP
CNE Cable and SNE cable (Picture Heavy)
Co Channel / Adjacent Channel Interference on VHF
co site of analogue and digital repeaters.
Coast - Rugby Radio
Coax damage - was Vacuum pump fittings - DN 25 ISO-KF
Coax damage - was Vacuum pump fittings - DN 25 ISO-KF
Coax fed street lights
coax / lead roofing
coax lengths
Coax Loss
coax relay spec required
Coax relays?
Coax replaced
Coax (soldering / crimping)
Coax stripping machines
coaxial capacitors
Codar CR-70A MkII
Coil Winding, Turns spacing and Qu
Coils
Colinear Spacing
Colour codes used for small inductors.
Com Port Conundrum
Comet 250B
Comet 250B vertical
Comet CBL-2500 Balun
Comet CHA 250 BX
Coming soon to a house near you ?
Coming to the end of my tether
Commercial use of web published code
Common Interests ?
Common rail diesel engine noise on HF
Compact Analogue Voice (was 'What's happenning ..'
Compact Analogue Voice (was 'What's happenning ..'
Compact fluorescent lamps
[drifting off topic] Compass Compensation
Compass Module
Compatability between cars and mobile transceivers
Complaints - Topic Diversion
Complete ATU in a chip
Complicated numbers
Component Data Sought
Component Information
Component mounting pads for breadboard construction
Component recovery problem
Compressed gas to raise SCAM12 mast?
Compressors
Computer Noise on Powerlines
Computer PSU noise
COMPUTER SECURITY
Concealed, non contact, changeover switch
"Concrete" advice
Conductive / non conductive fishing poles
Conductive / Non conductive guy ropes
Conductive Paint Thinners
Conductive Paint Thinners - Success
Conduit for coax
Connection standards on old Am. Rad. equipment
Connector on Weller TCP soldering iron
Conned emails
Constant Voltage Transformers
Antenna construction advice
RSGB Construction Competition
Construction Feedback - please play nicely!
Construction Frame
Construction of Christman phasing
Contacting Microset.
Contactum MCB Issue
Contest Data Mode (was - " RSGB prepared to defend CW")
Contol of Antenna Lobe Take-off Angle
Controlling an AC blower with an inverter drive
Convert ASCII to UTF-16?
Converting Generators to run on gas
Cooking Batteries..
cooking batterys
Cooling resistors - not a way I would recommend, but ...
Cooling resistors - not a way I would recommend, but ...
Copper heat-sink threads using thread-forming taps?
Copper tube corrosion and antenna efficiency
Copying via Command Console
Copyright 1936 More Old Splicing Techniques - ECN Electrical Forums
Copyright and the issues I raised !!!
Cordless phone frequency
Cordless Soldering Iron- Good Buy
Counterpoise / Ground plane
Counterpoise wire
Coupled Resonator Antennas
coupling capacitor shafts
coupling capacitor shafts - Thanks
Coutant GPE1000/24 info please
coutant - lambda mml400 power suppy
CppSim/SUE2 circuit modeller question
CQ-DATV 21 March 2015 is available for free download
CQ Magazine
CQ Test
CQ Test - Compact HF Beam?
CQ Test ( Rotator prob's)
CQ Test - SNDemo
CR2032 oddity
Crazy QRSS signal = Red Face
Crazy QRSS signal = Red Face
Creed handbooks needing good home
Crestron Home Automation/I-LIGHT
Crimp or solder
Crimping or soldering Anderson Power Pole co nnectors
Crimping or soldering Anderson Power Pole connectors
Crowbars
Crystal filter failures
1.4 MHz Crystal Filters
Crystal grounding
Crystal ladder filters
32kHz crystal oscillators
Crystal suppliers
Crystal wanted - 2.3 MHz
CTC dummy load I.D.
CTCSS purpose
CTCSS purpose (was Online Poll about Analogue Repeater Use)
CTR-1 Transceiver
Curing TVI on Labgear FV400 Set Top Box
Curious - ALC
Current Exams was PL259
Current lack of interesting technical features in RadCom
Current meter claibration load
Current mode Baluns - is the explanation correct?
Current vs Voltage baluns
Cushcraft 13b2
Cushcraft 19 ele "boomer" 2m yagi
Cushcraft D40
Cutters recoomendation
Fwd: Cutting Quarter Wave Lines
Cutting Sheet Metal
CW and radar
cw carrier offset convention
CW key recommendation for novice
CW Keying spectrum and Gaussian shaped pulses
CW Saves The Day
cyano
Cyprus OTHR video.
ISS SSTV 145.8 FM starts April 11 + First D-STAR Satellite
D Star groups
DAB Radio
DAB reception with SDR
DAB vs FM (Was Hidden Signals...)
Daily Mail Propagation Predictions for 2012
Daiwa MR750 Rotator
Dangerous Antennas: thread closed
Dangerous Antennas publications
Danielle George interview, BBC R4
Data or Digimode?
Datong FL3
Datong Morse tutor
David Clark Marine Headset ref LO Zin to HI Zout
David Clark Marine Headset ref LO Zin to HI Zout
David Wythe - BBC Slide Rule
DC in transformer windings
DC PSU advice
DC Resistance of Coax - '259's
DC Resistance of Coax - '259's
Trying to use an Adafruit si5350 dds with a Digispark board. [1 Attachment]
DDS VFO Board PL259 screw on type
Fat dipoles (was: De-oxidizing copper wire)
Dead bands
Dead power supply
DEAF BLIND PERSON possibly ex-forces needs helping
December RadCom - Moving On
DECT SRI going further OT
DECT Wireless Phone Line Extender
Defcon 21 SDR talk
Defeating a GP-IB setting
DEGEN DE1103
Delayed messages
Dell laptop psu plug - slightly OT - Addendum
Dell laptop psu plug - slightly OT - Addendum
Delta loops & Aerial Noise.
Delta loops & Aerial Noise.
Delta Matched 5 or 10 Elt. Yagi for 2 Meters
Demonstrating audibility of weak signals - utilty to play with.
Designing a house for amateur radio
DesignSpark - edit pdf
Desktop front panel toroids useful for baluns?
DF1FO DF receivers
DF2BO & Optibeam
DFM Input Impedance
DG8 Pre amp
DG8 Pre-amplifier
Did I do good?
Dielectric Properties of FR4 Substrate
difference between full and half size G5RV
Difference between Tone Squelch and DTCS - re Icom IC-E7
differential comparators fast attack , slow release time
Digest Number 104
Digest Number 1083
Digest Number 1106
Digest Number 1108
Digest Number 1111
Digest Number 1121
Digest Number 1221
Digest Number 1256
Digest Number 129
Digest Number 1576
Digest Number 1599
Replying to digest messages (was Digest Number 1650)
Digest Number 1701
Digest Number 2041
Digest Number 2122
Digest Number 2152
Digest Number 2161
Digest Number 2191
Digest Number 2256
Aerial Bracket (was Digest Number 2403)
Digest Number 2475
Digest Number 2629
Digest Number 2971
Digest Number 3052
Digest Number 3183
Digest Number 3403
Digest Number 3420
Digest Number 3445
Digest Number 3506
Digest Number 3572
Digest Number 3808
Digest Number 3945
Digest Number 61
Digest Number 631 - Crystal Filters
Digi modes on HF in common use ?
Overseas Purchases (was Digikey UK)
Digital Britain Report
Digital Data and Digital Voice on the Kenwood TS-590S
Digital modes.
Digital Oscilloscopes
Digital oscilloscopes anyone?
Digital Radios
Digital signal on 7181kHz
Digital Voice Codec2 presentation video
Dimension 4 - Accurate time for your PC
diplexer circuit
diplexer circuit and double balanced mixers (DBM)
Diplexers and mixers (was Home brew HF receiver)
Dipole balun.
Dipole bandwidth (was Cable Diameter)
Dipole centre balun - coax "short"?
Quotes (Was Dipole interaction with aluminium mast)
Direction Finding
Directional couplers
Directional couplers
Discones
Dish
Disposal of Mercury
2716 Dissolving Epoxy Glue / Potting
Distance apart for 5MHz ground wave
Diversity Receive
DIY ground plane for mobile antenna
DIY PCB production
[Fwd: 10M propagation was DJ4VM Quad Balanced Line Feed Query]
Dk10F 4cx250 Amolifier
DMR decoding and IK8XOO webSDR rx
DMR radio audio adapter, user side pinout? Sorted!
DMR radio audio adapter, user side pinout? Sorted!
DMX 512 OT
Do wire antennas loose performance over time
Do You "Broadcast"?
Does anyone know anything about Outbacker antennas?
domestic qrm
domestic rf qrm
Domino Jammer [was Slightly OT]
Don't believe Google Maps was Extending the LOCator system
Don't do this at home
Don't Unsubscribe!
Doppler DF [was Reradiation ...]
Doppler DF'ing of PLA/PLT devices
Doppler DF [was Reradiation ...]
DOS Batch File Programming
Double sideband on 10 metres
Doublet Antenna Queries
Doublet design
Doublet feeder
Doublet feeder
Doublet feeder part 2
Doublet vs ZS6BKW Antenna re.. Impedance on 20m comment
Doublet vs ZS6BKW Antenna re.. Impedance on 20m comment
Doubtful replacement transistors ?
DRAE 13.5VDC 12A linear PSU
Drake TR7 Parts Wanted
Dream Team line up in the shack.....
[drifting off topic] Compass Compensation
drill bit sharpener recommendations
Drill Bit Sharpener Reommendations.
Drill press
Driverless LED lights
Driving a vac variable (was compasses)
Droitwich Valves
Droitwich Valves - Morse
DSB on 10 metres
DSL Microfilter
DSP SSB
DSPic Assembler Code
DSSS
DST (was : Inch Measurements)
DST (was : Inch Measurements)
DSTAR & AMBE - a bit of history
Dstar Re-alignment
Dual 4 and 6m antenna
Dual Band TX
Dual monitors in Linux
Dual Power Supply Query
Dummy load
Dummy load coolant recommendation
Dummy Load vs. Frequency
Duplex super-regen (was "Catching spies")
Duration of main power outage is longer than necessary, to avoid
Duration of main power outage is longer than necessary, to avoid customer complaints!
DV calling channel
DV mush
DV Simplex Gateway
DV vs FM
DV27 Connector
DX clusters GONE OFF TOPIC
DX clusters GONE OFF TOPIC
DX TV anyone?
E and H fields (was Nulling out VDSL)
E Field Antenna & Transceiver question.
e mails lost
e.r.p.and e.i.r.p
Eamon Skelton 10m transceiver
Earphones
Earth impedance
Earth Leakage Circuit Breaker
Earth Looops
Earth Mode Telegraph
Earth/Neutral Failures on Either a PME (TN-C-S) or a Conventional TNS Service
Earth radials for 80m vertical
Earth Rods
Earth strip resistance question
earthing colours
Earthing HF Mobile Antenna
Earthrods and Testing
Eaton / Ailtech 757 Spectrum Analyser Manual
Eb0 and the Shannon limit
ebay 1602 morse decoder connections
Ebooks - revisited.
Ebooks - revisited.
Ebooks / vintage electronics
Today's eclipse
[Bulk] Ecoflex 15 loss measurement
Eddystone 888 rx
Eddystone 888 rx
EDDYSTONE EC10 chassis/earth
Effect of geotextile membrane on possible RF earthing?
Effect of running 300 ohm slotted feeder within fibreglass fishing pole?
Effect of running 300 ohm slotted feeder within fibreglass fishing pole?
Effect of water on "window" line
EFHW 8010 too good to be true?
EG&G 10MHz TCXO
EI9GQ PIC counter display
Elecraft KPA100 pa heat sink pads.
Elecraft XV50 Transverter
Electric fence insulators as aerial supports?
Electric shocks & RF Burns
Electrical safety query
Electricity meters and RMS current
Electricity meters and RMS current
electrolube all 4000 conformal coating
Electrolytic capacitance Bridge
Electrolytics
Electronic Design News article on amateur radio
Electronic Keyer Question
Elektor Magazine
Elevator Noise
Eltek SMPS 1000 SI 48V PSU
ELTEK VALERE H2500A2-VV 48V 50A RECTIFIER
FW: [VHFandUHF] Display of Email addresses changed in Yahoo groups
Email delays: a possible answer
Email filtering
Email filtering [was: How do I get linked-out of LinkedIn?]
email problems
EMC: EN50561
EMC enforcement?
EMC issues with robotic lawn mowers
EMC Issue - Monitor direct radiation
EMC issues with robotic lawn mowers
EME Listener?
EMF or PD
Enameled wire in different colours?
Back Encapsulated Rectifier Stack
End-fed "miracle antenna" follow up
End-fed antenna matching (was slack dipole)
End-fed inverted-L advice
End-fed miracle antenna or snake oil?
end fed vertical 20m
Engineering firms
Engineering humber format for MS Excel
Engineering in schools?
Moderator X-Rays & Engineers or Ingeneers (was X-Rays) Threads
Eon Smart Meters
eqsl
Equipment Insurance
ERA MICROREADER Original
ERA MICROREADER Original
ERA Microreader - RECYCLING
Erm...swaps anyone ?
Moderator - error on RSGB website
ESA Education Office prizes + Hear Tim Peake Saturday
ESD safety
ESR Meter Protection
Estimate please
ET Phones Home - but Faster?
etchant disposal
Further to my last post < Interference From Ethernet Cable>
Ethernet Switch QRM
Ethics
Eurocall CD - How up to date
Eurocall data - why no e-mail addresses and locators?
European Lightning Map
Ever So Slightly OT: Mercedes AA Class!
ex- Radio Officers
rae exams
Exams (became somehow "RadCom Plus: UHF Transceiver" !)
Excellent Radio Wales piece on Amateur Radio
Executive Order Coordinating Efforts to Prepare the Nation for S
Executive Order Coordinating Efforts to Prepare the Nation for Space Weather Events
Experience of VGA to HDMI convertors?
Solid State PA biasing (was Exploding capacitor.)
Explorer 1200 Linear Amp
Don't believe Google Maps was Extending the LOCator system
External atu
External atu- straying of main thread
External backups
External Enclosures
Extracting Ground Rods
ezz pc Linux
face book
Fairhaven RD500VX - Info needed
Fake driver transistors
Fake FT232 Devices and modules
Fake IC's - not in my experience
Fake RS invoices
Fake serial ports
GQRP group (was Fake toroids)
Fake Transistors
Fan dipole questions
Fan dipole questions
Fans on Heatsinks
Far East transistors
Far field; end fire versus broadside
Faraday Cage
Faraday Cage:going off at a tangent...leaky feeders
Faraday Cage - uWave ovens
Farnell gone mad?
Farnell H 60/50 PSU info please?
Farnell PSU
Fascinating description of £3 t x/rx 10 Ghz Opera beacon by PA1SDB
Fast Fourier Transform Breakthrough
Fast recovery high voltage diodes
FAT DIPOLES
Fat dipoles (was: De-oxidizing copper wire)
Faulty diodes?
FAV22
FDK-750E 2M Multimode query
FDK Multi-700EX Low TX & RX readings
Feeder problem
Feeding a quad
Feeding a Quarter Wave Vertical...guy ropes?
Feeding a Quarter Wave Vertical...guy ropes?
Feeding a Windom
feedpoint of LFA yagis
Ferrite beads and Dead Chickens
where can I get tiny 2 hole or similar ferrite cores
Ferrite indutors for audio
Ferrite order
Ferrite ring/bead supplier(s)
Ferrite Rods as TX antennas
Ferrites
Ferrites and magnetic fields.
Feynman's electron
FFC supplier
Fibreglass tube for EME array
Fibreglass tubes and rods
Fibreglass vertical colinear
field days and try outs
Fw: Field Strength Meter
field under an inverted V dipole
Filter Coefficients
finding the way round the site
FIR Bandstop filter coefficient design
Firefox woes
Firefox woes - Mac response
First OAM Signal Experiment (August RadCom)
First test message
Fitting transceivers to modern cars - MINI
Fitting transceivers to modern cars - MINI
Five letter group morse code on 7019kHZ
Five wire transmission line
Five wire transmission lines & Faraday Shields
Q
SS

YAESU FL2100 AMP.
FL21000 amp AMPS in general.
FL21000 amp AMPS in general.
Flex pcb was 3-D printing
Flexible aerial wire
Flexweave corrosion?
FLL VFO
Float-charged battery for rackmount Rb standard
Floodlights
FM and digital noise reduction
FM Deviation
fm Harry Weston M1ETU
FM Quadband: Wouxun and TYT TH-9800 Problems and Solutions
FM transmitter
Folded dipole resonance
For interest and comment
For those interested in propagation
For Thunderbird users: who sent that message?
Force cooled heatsink aerodynamics
Forgotten passwords
forum for discussion of the exams
Foundation and 2m/70cms (was: A Sobering Thought)
Foundation Courses at Wythall Radio Club near Birmingham
Foundation licence 431MHz ?
Foundation Licence conditions
Foundation Licence Question: Homebrew related
Foundation Licence Question: Homebrew related Stupid rule!
Foundations of Wireless
Four-pushbutton switch needed
Foxtrak APRS tracker - CD error
Any FPGA /PLA experts for a simple project ?
FPGAs - Please Do Tell !
Free audio codecs (Was Online Poll about Analogue Repeater Use)
Free gift with Radcom? - I doubt it!
Free PIN Switching Diodes
Free service manual
Icom IC7100 frequency calibration
Frequency Hopper ?
Frequency Hopping TCXO
Frequency Quiz
Frequency Synthesiser for Piccolo
FRG100
FSK 441
FST3125M Fast Bus Switch
FT-1000 MP Mark 5 - DC Connector?
FT-140-61
FT-290 spares?
FT-530r handheld totally deaf
FT-60 Externsl PSU
ft-7800 deaf
FT 817 high stab xtal
FT-847 Schematic
ft-950 internal tuner or MFJ945E
FT1000D info needed.
FT100D tuning Dongle?
Yaesu FT101ZD MkII realignment
Mutec Front End & FT221R/225R/225RD
FT221/225 extender boards?
FT290 Mk1 spares wanted
FT726 70cm module
FT726 problem.
[FT817] FT817 mobile in EA8
FT817 Mobile Mount?
FT817 Power Plug
FT857 remote fascia mount
FT991 - Receiver Noise
Fun question on electro magnetics
FUNcube-1 on BBC TV Monday morning
FUNcube-1 Whole Orbit Data + CAPE, WREN and n3Xt
FUNCube Data Warehouse Ready for Demo
Funcube+ dongle on Rasp Pi
Fundamental error in PW
further & more on antenna issues
Lossless fuses? - Vehicle power supplies- Old documents
Fuses and the term: Tempered
Fuses in transceivers' DC power leads
Fuses in transceivers DC power leads
Fusing Negative Leads.
Fw: 18th edition regs
Fw: 2m bandpass filters
Fw: 60Hz synchronous motor
Fw: ADSL splitter question
Fw: Anthorn LORAN frequency?
Fw: ATUs versus AMUs
Fw: Audio test signal for SSB transmitter linearity
FW: Balloons and Amateur radio
Fw: BBC transmissions locked to atomic frequency standards
Fw: Cage Dipoles etc (50 or 75 ohm)
Fw: Concealed, non contact, changeover switch
Fw: Connecting Transceivers in Vehicles - Change .of Recommended Practice
Fw: Effect of geotextile membrane on possible RF earthing?
Fw: Engineers or Ingeneers (was X-Rays)
Fw: Faraday Cage:going off at a tangent...leaky feede
Fw: Faraday Cage:going off at a tangent...leaky feede
Fw: Faraday Cage:going off at a tangent...leaky feede
Fw: Faraday Cage:going off at a tangent...leaky feeders
Fw: Faraday Cage: how does a cellphone magically wor
Fw: Faraday Cage: how does a cellphone magically work inside a closed microwave oven?
Fw: Field Strength Meter
Fw: Fw: LF NDB
FW: FW: SMPS Noise - Ouch!
Fw: G7FEK stub match mod - folding back 40m to reduce overall size of antenna
Fw: G7FEK stub match mod - folding back 40m to reduce overall size of antenna
Fw: Generating Gaussian-spread random numbers
Fw: Graves Radar/omni antenna
Fw: grounding laptop power supplies
FW: High power indoors/ RF Dangers
FW: High power indoors/ RF Dangers
Fw: I am looking for a Wifi device.
Fw: Inch Measurements
Fw: Interference identification:Solved!
Fw: : Last Letter in RadCom
FW: Lead-free solder legal position - reliability
FW: Leave it on all the time?
Fw: LF NDB
Fw: locking a 100MHz OCXO
Fw: LOOKING FOR NI CAD CHARGER INFO
Fw: Mains waveform flat topping
FW: Martindale EZ150 mains wiring tester
Fw: MAX 497
Fw: MMANA-GAL Antenna Modelling Program noe have a new English HELP FILE
Fw: Monofilament nylon antenna supports?
Fw: Near field strength
Fw: Negative component symbol (non-Foster)
Fw: Negative Feed Back
Fw: Neutralisation
Fw: New RSGB PME Leaflet
Fw: NOT CIRCULAR POLARISATION But twisted vortex radio waves
Fw: Ofcom licence validation.
Fw: On Time or Perhaps Not?
FW: PC Builder not meeting CE
FW: PCB makers
Fw: Radiation levels at a public event
Fw: Radio keys for cars
Fw: Relays for external antenna switches
Fw: Remote Control Relays & IC740
Fw: Repulsive electrons
Fw: Silent key sale
Fw: Speech intelligibility [was: Widening FT-450D...]
Fw: Technical Advice Sought on Class A Amp Design
Fw: Text Formatting
Fw: [UK-CONTEST] BLACKBERRY
Fw: [uk-vhf-contesting] Fw: sd2931 failure
Fw: UNF connectors
FW: unknown coax cables - PTFE
Fw: USB thermometers anyone?
FW: [VHFandUHF] Display of Email addresses changed in Yahoo groups
[Fwd: 10M propagation was DJ4VM Quad Balanced Line Feed Query]
Fwd: An unexplored facet of Amateur Radio
Fwd: Any Radio Astronomers here?
(Fwd) Captchas (if that's what they're called)
Fwd: Cutting Quarter Wave Lines
Fwd: Digest Number 3183
Fwd: Dual 4 and 6m antenna
Fwd: FAV22
Fwd: First test message
(Fwd) [GQRP] RSGB Centenary Receiver
Fwd: ICOM CI-V Please Ignore my question
Fwd: Inch Measurements
Fwd: Kenwood TH-F7
Fwd: LF: Article on forward error correction
Fwd: LF: Time server with delay option?
Fwd: Low-noise, wideband, small signal RF amp
[Fwd: Measuring Antenna Z using Balanced Line]
Fwd: OFCOM 143MHz - 169MHz Statement
Fwd: Open Wire Feeder
Fwd: RCD tripped by 144 MHz transmissions
Fwd: Review of EU Legislation
Fwd: [RSARS Members] FW: Clark ST3 Mast [1 Attachment]
Fwd: RSGB GM to retire
Fwd: [UDXF] MUSEUM OF RADIO AND TELEVISION OF TURIN, ITALY. THE PHOTO GALLERY.
Fwd: VHF/UHF 300W Dummy Load Design
G0CWT Mag Loop & Video Demo...
G0KSC 11 el 4/6m yagi
[uk-hf-contesting] G100 RSGB .. typo
G1IOM or G2IOM
G3LDO website
G3PLX filters with a twist
G3PPD CW501 Insect Filter
G3RJV Talk on BATC video website
G3VA - SK
G3ZRS Linear amp book and 3mm copper tube
G400 Rotator
G450 dimensions
G4ENA TX/RX RadCom May 1992
G4EST ~ Charlie Cartmel
G4HJW/P on lightwaves
G4IPZ - Component Hunt
G4MH Minibeam
G4PMK Simple Spectrum Analyzer
G4PMK Sinple Spectrum Analyzer
G5RV, garden full of telegraph wires, is it worth it?
G7 callsigns
g8dgc debut
G8ODE Study of Open Loop Antenna & New Cola Antenna
G9 callsigns
Galactic noise floor, receiver noise figure and RX antenna size
Gald to be British -- another great British Idea Raspberry -PI
Galling
Galvanised metal
Gaming headset interfacing
Gamma match for simple 6M dipole
Gap Filling Adhesive
Garage door openers
Garden Rail track "singing" on 70cm
Garmin GPS 25-LVC interface software
Gas Filled Arrestors
Gas filled tube arrestors
Gate ways , emails and third party traffic
Gaussian Noise simulation
GB & EI Repeaters
GB2012RA in Woolwich welcomes visitors
GB2RS Email Alert - Not Received
GB3ANG on 23cms
GB3NGI 70cms Beacon
GB3RAL
GB3UHF was VHF bands Polarization
GB3VHF / UHF Frequencies was GB3UHF was VHF bands Polarization
GB3VHF / UHF Frequencies was GB3UHF was VHF bands Polarization
GB7TIG new packet / IP station now active
GBR antenna tuning
Geany editor
Generating Gaussian-spread random numbers
Generator backup for mains
Generator for SSB Field Day
Generic name for
Generic name for connector type.
Gentlemen please .....!
German, Anyone?
Getting more Girls Involved in Science and our Hobby
Ghost COM port
Moderator - Giving stuff away
Glue Gun
GM3AXX Compact Multi-band Delta Loop
GM3AXX Compact Multi-band Delta Loop - Mag Loops
GM3SEK baluns
Gmail anomaly
Gmail anomoly
GNU Radio
Fw: Faraday Cage:going off at a tangent...leaky feede
Goniometer
Goodbye Halogen?
GoTenna - 'No Signal, No problem'
Government set to scrap engineering exams in schools
GPIB Surviving - why?
GPS 1pps output
GPS DO Curiosity
GPS Freq, Reference
GPS frequency standard
GPS Jamming [was Use of Garmin Oregon etc.]
GPS locked references for radios
GPS Modules NMEA timing
GPS Receiver boards
GPS Signal FIltering
GPS Simulation (simGPS)
GPS vulnerability (was Anthorn LORAN frequency)
GPS (was Racal 9916 ext ref frequency)
GPSDO Walkabout
GQRP group (was Fake toroids)
Graves radar
Aircraft reflections was Graves Radar/omni antenna
Season's Greetings from RSGBtech
Grid losses
Ground Enhancement Material
Ground Plane Radials
Grounded grid PA input impedance
Grounded Negative PSU
Grounded Negative PSU - New Topic: Fusing Negative Leads.
Grounding
Grounding and PME
grounding laptop power supplies
Grounding materials
Group Delays Again
More Group Problems
Groups IO - Ready to Go
GS31B amplifier
GU10 LED lighting and QRM
GU10 LED lights
Guanella Balun
Guy ropes and guy stakes 'PARAFIL' cable
Guy ropes and guy stakes 'PARAFIL' cable
gw basic
GX3RCM (former GB4FUN) at Finningley Microwaves this weekend
Hacked
Hacking Skyworks RF switches
HackRF & SDR Radio
Half Size G5RV Construction
Hall Effect DC current sensors in PAs
Ham friendly equipment
Ham International Multimode2
Ham nation
Hammerite on antennas why not camoflage tape ?
Hammerite on antennas why not camoflage tape ?
HAMNET in the UK?
Handheld Battery Packs
Handling Heliax cable
Handling SMDs (Airborne Parts) !
Handling SMDs (Airborne Parts) !
Hardware TX lockout
Hari and Unadilla traps?
Harmonics of 1003kHz
re Hash on 70MHz
Have your say..... (O/T)
Haversines
Having a plan B
HB9CV Antennas sharing a common boom
Heads UP - RF Matrix PadBoard - Back Again
Heat dissipation in SMD power resistors
Heat shrink and coax
Heath Cantenna dummy load
Heatherlite Explorer RF Amp
Heatherlite Hunter HF amp documentation / user guide/ internal photos
Heathkit Mohican
Heating controllers
Heatsink adhesive or tape ?
Heatsink convective air flow
Heatsink mechanics
Heatsink oil
Heatsinking
Height of antenna
Heil HC-6 Proset
Helical wound frame loop
Helix antenna for weather satellites. Anyone in London interested?
Help 10GHz Wideband
Help/Advice Request
Help - bandplan query
Help Data Mode Connection Yaesu FT707 to PC for Digi Modes PSK31
Help finding Radcom article on vertical with elevated radials
Help for a 40 year project
help for hearing aid user
Help how to tune a Halo Antenna
Help identifying 500pF capacitor
Help identifying RF transistor please (SRF3605)
Help identifying what type of noise/modulation
Help locate a Chirpsounder
Help me find a lost transmitter site.
Help me identify a WSPR signal
Help me identify this box (not Spam!)
Help, - MMS1 Morse Talker
Help Needed please - Cirkit 28 to 50MHz transverter
Help Needed please - Cirkit 28 to 50MHz transverter
Help needed - Racal-Dana 9916 UHF Frequency Counter
Help needed to ID a component.
Help needed with Park Air Electronics base station
Kenwood TS2000 EXT CONT, what is it, help please
Help please with identifying a connector type
Help - Rotary Potentiometer Source
Batron BT62005P LCD help wanted
Help with a Moonraker 70cms yagi.
Help with AC electrolytic cap in rotator
Help with ESP128 Server PSU
Help with filter specs/graph
Here we go again...
HF Active Rx Loop Antenna
hf amp chassis wanted
HF amp. design help
HF amplifier transistor (no 2n3866 please)
HF Antenna
- HF antenna advice
HF Antenna help
HF Antenna matching unit / Tuner
HF bandpass filter
VHF bands Polarization
HF bands & USB/LSB
HF beacons
HF convention G2AVJ Toroidal Antenna lecture EGHAM
HF ground plane antenna/radials
HF ground plane antenna/radials - safety
Identifying UHF Interference
HF Mobile - advice, please
HF Mobile Operation, Toyota Hilux and Injector noise
HF Mobile - Toyota Hilux Mk6 (2011)
Interpreting the HF propagation data published in RadCom each month
HF Propagation and Google earth.
HF QRM
HQ170A VHF Receiver
Wall warts [was HF RFI]
HF Spread Spectrum Tests Schedule
HF Switching Relays
HF toroidal cores data sheet
HF wire loop aerial question.
Hi all and SSB Filter
Hi all and SSB Filter
Hidden antennas in the gutter!
DAB vs FM (Was Hidden Signals...)
Hiding a YAGI
High current RF capacitors
High current RF decoupling capacitors
High Impedance Antenna Feed
High power 100 Ohm Resistors
High power indoors
High Q Antennas
High speed broadband
High Temperature Plastic Screws.
High voltage relay to replace knife switch on aerial?
High voltage relay to replace knife switch on aerial?
High Voltages
Higher impedance coax
Higher impedence coax
Historical interpretations
Hive Thermostat and control - any issues?
Hk828 voice ic
HM-100N mic
Hoembrew performance - since we have thread drift!
Holding Multiple Amateur Call Signs
Holes and electrons
Home Brew ATU,s
Home Brew Boxes...
Home Brew Dummy Load
Home Brew Dummy Load slightly o/t
Diplexers and mixers (was Home brew HF receiver)
Home Brew Projects using mobile phone modules.
Home Brew Rig in Hand Luggage
Home Brew SDR Transceivers.
Home Brew Valve Amplifier for 70 MHz
Home Construction with modern devices - Poll
Foundation Licence Question: Homebrew related
Homebrew Az/El Rotator
Homebrew Bluetooth Microphone (/headset)
Homebrew performance
Homebrew performance - since we have thread drift!
Homebrew receivers
Homebrew Tracking Generator
Old Honda generator now working
Hope for Technical Education
Horrible circuit diagrams?
Horrid mixes?
Hot Air Pencil
Hot air re-work stations
House Electrical Supply type TT
House mains earths (was Quick survey..)
How about a Jar?
How are these spurious signals generated?
How do I change the emaill address that Yahoo groups forwards to?
Email filtering [was: How do I get linked-out of LinkedIn?]
How do I try and identify unknown toroids using an RF Sig Gen and a CRO
How does ALC work?
How to Build Advanced Shortwave Receivers
How to change the phase of an audio oscillator, to cancel out Tinitus
How to clean the transfer belt on a laser printer
How to dispose of PA transistors
How to Find Affiliated Club list on RSGB Website
How to QRN yourself
How to test a Tetrode..?
Howes kits
HOWTO connect the TS-590S to the SDR-IQ receiver
HP 182T / 8557A spectrum analyser problem
HP PROLIANT ESP128 SERVER PSU HELP!!!!!
HRD/DM780
HRD/DM780 enquiry
HT Transfomer
http://websdr.ewi.utwente.nl:8901/ (sdr radio on line)
Huff & puff stabilisation (again)
Huff & Puff VFO stabilising
Hum on Long Wave
Hum suppression
Humax digital recorder
HV connectors
HV powerlines
Hyperbolic Navigation Systems.
[uk-vhf-contesting] Hyundai inverter generators?
Fw: I am looking for a Wifi device.
I&Q generation question
I-Light Source Controllers
I Need a Small Monitor
i want to make base loaded coil and have many many many questions
I2C to USB
Iambic Keying
IARU Region 1 Intruder Watch
IARU Vienna Proposals -
IARU Vienna Proposals - RSGB proposal on the 30m bandplan
IBM server fans
IC-706 large display
IC-7400 Internal ATU fault
IC supplier in UK
IC7000
IC706 audio problem
IC706 front panel latch spring. SOLVED :)
IC706 front panel latch spring. SOLVED :)
IC7100 cal
IC7100 review
Ic746 144mhz recieve sensitivity
Ic746 distorted 144mhz SSB mic audio
IC746 PCB Layout & component references
Ican Ilight Bus Fault
ICNIRP limits and radiation exposure to Amateur Radio Operators and
ICNIRP limits and radiation exposure to Amateur Radio Operators and for the public?
ICOM 756 Pro II Display
Icom 821h fault
Icom & Yaesu LEPS Issues
ICOM band switching voltage fault?
ICOM CAT (CI-V ) Command
Fwd: ICOM CI-V Please Ignore my question
Icom CI-V bus to PICAXE 20X2 serial in interfacing
Icom connector required
Icom D-star handhelds
Icom E7 call channels
Icom HM-100N mic
Icom IC-910 foot switch
icom ic-910h
Icom Ic R7000
ICOM IC201
Icom IC7100 frequency calibration
Icom microphone levels
Icom Microphone Wiring Question
ICs and static protection
ICS512 PLL Clock multiplier.
ICSP pin standards
Idea for suspending an antenna betwenn two tress,
Ideal antenna for loft space
Ideas for a public display
Fw: Interference identification:Solved!
Identification of part needed.
Identify RF power device [1 Attachment]
Identify the connector please
Identify Toroid ?? Addtion to last post
Identify Toroid ?? Addtion to last post
Identifying a noise source
IDENTIFYING PLASTICS
Identifying UHF Interference
identity
IEC locking 'kettle' lead
IEEE article
ignorant
Images on the waterfall display
Imax 2000 help
IMD performance
IMD performance of VHF/UHF transmitters
Impedance of ferrite chokes.
Impedance Transformation
Implementing hold-over for a disciplined OCXO
Import Duty: Was ( TC-12 12 ohm coax)
in response to - New RSGB PME Leaflet you-tube vid.
In the Shadow of the Sun Part 2
Inch Measurements
Inch Measurements + Currency
inch measurements, especially fractions...
Inch Measurements ...racking etc.
Inch Measurements...racks & racking...
Increase in noise floor
Indentify some coax [1 Attachment]
Indoor doublet antenna - Help!
Inductance meter kit
INDUCTION MOTOR
INDUCTION MOTOR SPEED CONTROL
Yaesu FP-21 PSU - info needed
Info` needed : Attenuation figures
INFO NEEDED ; EAGLE K-200, FET VOM
Some info please.
Info required on Aerial Tuner HF Type 1282. Inst No:464129. AD107
INFO WANTED............. DIGITAL TELEVISION
Information needed on Star SR-200
Infra red rework and soldering stations
Ingeniers?
Inside Power Transistors
Inspection Certificate for Versatower SP 60 Masts
Installing a mobile in a vehicle without an Aux position on the ignition
Installing Pardot Mini Whip
Installing Radios in Motor Vehicles
Installing Radios in Motor Vehicles- Summary of conclusions thus far.
Installing Radios in Motor Vehicles-What a long thread!
Instant maintenance?
Insulate or bare
Equipment Insurance
Insurance cover
Interested in G0FAH OCFD 4 band 40m version described in QST
interesting archive Digest Number 3346[1 Attachment]
Interesting article
Interesting Dilemma
Interesting Electronic Calculators Link
Interesting EMC problem
interesting PME fault
Interesting power-line fault
Interesting Reading
Smart Meters (was Interesting TVI case)
Possible future fibre broadband interference
Interference Cancelling Using Correlation Feedback
Interference identification: Help!
Fw: Interference identification:Solved!
Interference on 10MHZ (mainly)
Interference on 2m
Interference on 70 mHZ
Interference to 10 and 18 MHz
Interference to data on my own ADSL / VDSL BT infinity Smart Hub
Interference to data on my own ADSL / VDSL BT infinity Smart Hub / Home hub
Intermediate Exam at Wythall Radi Club B47 6LZ
Intermediate Practical Exam
internal coax connectors
Internet dongle on Windows 7?
Intriguing picture
New member introduction
Introduction to Amater Radio - Bangkok International School
Inverted L & Feeding
Inverted-L Antennas
Inverted L Questions
Inverter recommendation
Invertors
Invisible to the Naked Eye - (Well Almost)
Invite to RSGB QSL Managers to Join a Group
Ionisation tester
Ionosphere radar
IOTA
IPad 2 & amateur radio use
Iron core choke design - but beginning to drift topicwise
Iron core choke design - but beginning to drift topicwise
Is it a Xtal Oscillator?
Is the Daisy Crazy or not?
Is there an A.M. net frequency on 144Mhz?
Is there any company PCB manufacturing company?
Is this available on the web? Does anybody know
Is this you
Is websdr.org down?
Isle of Wight quetion
Wideband RF transformer with DC isolation
ISP, ADSL & BT
ISS SSTV 145.8 FM starts April 11 + First D-STAR Satellite
ISS SSTV activity planned for late Dec. 2015 + Guildford SME-SAT
Issue of SES
It is me, or us this "balun" design flawed?
ITU reports now free to download
J310 Connections BEWARE
Jabdog
Jack Ravenscroft Susceptibility Defence Fund - EMC
Jack Smith K8ZOA SK
Japanese 12V DC connectors
Re built Jaybeam Quad Antenna
Jaybeam 16 Ele 2m Yagi
Jaybeam Antenna
Re built Jaybeam Quad Antenna
John Barber technical comment
Joining Coax
JT65 Beacon Tuning
JT6M on 6m?
July 2012 RadCom and club licence rules
July Radcom article on WSJT-X
Junk Box components leads oxidised
Junk Box components leads oxidised - THANKS
Juno Mission Follow-up
Just a Historical Note
Just a little moral tale.
just a quick question: technical links
Just how good will it work. aerial
Just in case you get bored about being snowed in this Christmas Ho Ho Ho !
Just Joined.
Just joined / pla
Just pondering.
JVC receiver
JVC reciever
K&L switching device(?) anybody recognise it?
K2AV Elevated Radials...?
K5BCQ SI570 kit
Kanga kits
Kenwood finally releases TS-990S brochure
KENWOOD HC-10 WORLD CLOCK. instruction manual wanted
Kenwood TH-F7
Kenwood TM-G707E
Kenwood TS-140s output power
Kenwood TS-870 ATU connector?
KENWOOD TS-990 HAS INTEGRATED THE H-MODE MIXER AS 1ST MIXER
Kenwood TS-990S plays well with SDR-IQ
Kenwood TS-990S RadCom Review
Kenwood TS-990S: Software and documentation BONANZA !
kenwood TS140s
Kenwood TS2000 EXT CONT, what is it, help please
Kenwood TS870sat
Kernow Gets a K
Kevlar (aramid) Antenna Wire
Keyer for valve transmitter
keyer for valve tx
Keytone in Radio Systems
Keytones in PMR Radio Systems
Kirchoff's Laws
kirisun S780 digital Radio
KISS Mixer Update
Kit in hand luggage?
Kitchen & household appliances noise...
Kitchen cupboard lights
Kite Antennas?
Chinese 45W RF linear kits
Klixon precision thermostats
Knife Edge Refraction.
Knife Edge Refraction on 2.4GHz
known resources for RLC meter
Kokusai MF-455-10CK mechanical filter.
[CDXC] KPA500 LPF T/R switch rework
Kraus's Guided Waves
Kw 207 supermatch atu!
KW1000 linear
KW1000 linear
KW202 circuit diagram
Kynar PVDF wire
L200 Ni Cad charger PROJECT.
LA battery - cell gone - any fix
Lack o fSoftware innovation in am radio.
Lacquer Sealant
Crystal ladder filters
ladder line breaks
Ladder Line Supply
Ladder Line vs Coax
Lamp Loads
Language of exclusion
Laptop birdies
Laptop power adaptors
Large Coil Inductance
Last Letter in RadCom
Lat and Long distance site:
Latest GPS module
Latin motto
Lattice Tower Parts
LDF5-50 / 6-50
LDG 600/1000 tuner protocol
LDG AT-100PRO auto-tune
LDMOS PA 15MHz oscillation Update
LDMOS Tranny
Peukert's law - Lead Acid Batteries
Lead Acid battery choice
Lead-free solder legal position
Lead-free solder legal position - reliability
Leaky Feeder + Syledis
Learning about PICs.
Leave it on all the time?
Lecture wanted - Antenna Modelling Software
Lectures available on the web?
LED BAR VOLTMETER ideas please - thanks for replies
LED BAR VOLTMETER ideas please - thanks for replies
LED Dimming
LED Driver
LED Lamp Reliability
LED Lamp replacement
LED lightbulbs
LED Lighting
LED Lighting - Good News
LED Lighting technology
Driverless LED lights
LED lights - EMC
Led PIR lights
LED TUBE CONVERSIONS
LED Twinkle circuit
Legacy PC Ports was :- ERA Microreader
Leixen VV-898
Leslie Lambert (A J Alan)
Lettering & Relays & Catapults
Levell Broadband voltmeter type TM6B
LF Current on coaxial cables
Fw: LF NDB
LF Off-air frequency stability study
LF Up Converter
VHF/UHF DX Book [was: lfa,owl,owa]
LGB Automatic block loops
LGB Lamps -Bell Lighting
Li-Fi and inerference prospects
Li-ion batteries
Licence numbers
Licence Part 2 T&C's (was Operating outside the UK)
Licence resurrected - HF antenna advice
Licence revalidation...now heres a thing!
Licence Review
Licensable handheld radios for sale
license revalidation
Lidl Combination Cutter.
Lidl Parkside Generator June 2017 Model
LiFi - Using light bulbs instead of wireless
Light Dependent Resistor (LDR)
Light engineering firms
Lightening Arrester [1 Attachment]
Lightning Arrester
QEX and Lightning Arrestors
Lightning time-of-arrival
Lightweight COAX
Lime SDR
Limited Height Radiators & 4 Squares
SD2931 Linear Amp
Linear Amp Circuit Diagram...
Linear Amp Puzzling Problem
Linear Amplifier question
Linear Amplifier question
Linear Loaded Verticals
Linear PSU schematic
link to the G5IJ antenna article
Linking Ciro Loop Ant. with Kenwood Transceiver
Linux & Unity - was RSGB Convention programme
Linux Mint was Firefox Woes
Liquid aerials
Liquid electrical tape
List of Primes (totally OT)
Lithium batter chargers
Recovering Lithium batteries
Litmus test web site with now open to discuss upcoming license review
Litz Wire
Live Streaming of AMSAT-UK Colloquium Presentations
Live Webcast Arduino for Ham Radio Ocotober 30th
live webcast of qrp talk by g3rjv 11th april 2010
LM317 Decoupling
LM35 anomaly.
LM380 Hissy
LMR 400 plugs
LO Phase Noise and wideband front ends
Loaded dipole foe 80M
Loaded dipole for 80M
Local Noise levels
locking a 100MHz OCXO
Log check algorithm
Logarithmic scales (was A Keyer Speed Question)
Loggin Satellite QSOs
Logging Software
Logic Families
Really Long LFSR
Long Path to China
Long Path to China
Long unloaded whips
Longshot - Philips prp73/74 series radios
Looking for a audio speach processor design in practical wireless about 1976-1979
Looking for a audio speach processor design in practical wireless about 1976-1979
Looking for Cat5 junction box.
Looking for cost-effective analogue multiplier chip
Looking for info AMTOR/SITOR PACTOR 2 - ARQ protocols ?
Fw: LOOKING FOR NI CAD CHARGER INFO
Looking for old Radcom article.
Looking for PA device
Looking for some transistor datasheets. 2
Looking for some transistor datasheets. 2
looking for source of zip wire
Looking for UK Arduino supplier
Looking for wifi printer adapter
OT: (and longish) Virtualization vsus Dual Boot (was Looking for Windows 7 QuickMix)
Radcom Dec 2017 - Design Notes - LZ1AQ broadband Active Loop antenna
Loop antenna feed impedance
Loop antennas in the gutter!
Loop inductance formula
Fw: Anthorn LORAN frequency?
Loran 136k
LORAN and eLORAN
Loss of Service
Losses in ATUs/AMUs
Lossless fuses? - Vehicle power supplies- Old documents
Lossless fuses? - Vehicle power supplies- Old documents
Lossless fuses? - Vehicle power supplies- Old documents
Low barrier Shockley detector diode in through hole
Low cost easy to homebrew HF transceivers
low-cost or free - HF amplifier bare PCB
Low cost pre-heater / SMT Rework station
low cost sdr for beacons
low frequency microphone - geophone - infrasound
Low Noise Antennas
Fwd: Low-noise, wideband, small signal RF amp
Low pass filter design
Low power 360V DC 5mA PSU design ideas please
Low power GPS tracking
Low-Z logic driver circut?
Lowe FX-1 GDO/Absorption Wavemeter
Lowe FX-1 GDO/Absorption Wavemeter
Lowe FX-1 GDO aka MIZUHO FX-1
Lower noise car laptop adaptors?
LT4320
lubricant for pneumatic masts
Lubricant for Racal pump-up mast
LZ5HP Transverter/LED Light Guide
M. Modules 1296 transverter PA transistor source
Levell Broadband voltmeter type TM6B
MA5B Antenna Problem
Mac OSX 10.5 Leopard
Maestro A2200 GPS Module Baud rate
Maestro GPS Bug?
Maestro GPS Modules
mag loops
Magentic mounts and HF
MagMounts - changing socket type
Re; Magnetic Amplifiers
Re; Magnetic Amplifiers
Magnetometer
Mains earth/rf earth
Mains filters (was SHED WIRING)
Mains Freq...
Russian Mains Frequency?
Mains interference query
Mains Outage in Australia
Mains plug socket tester
Mains power factor for commercial valve amplifiers
Mains Safety Advice
" Mains signalling " on 198Khz
Mains sockets with built-in USB chargers.
mains switch and thermal / magnetic breaker
Mains Transformer
Mains Transformer - being operated in reverse secondary as a primary
Mains voltage fluctuation
Mains voltage fluctuation
Mains waveform flat topping
maintenance period
Making PCBs with a laminator, Recommendations?
Making Quality PCBs
Man bites dog
Manhattan style construction
Manson EP-925 Fan Running Continously
Manufacturer's info
many sets but only one aerial
Maplin Power Supply.
Marconi/Eddystone RX
Marconi Instruments RF Amplifier TF 2167
Marconi TF 1020A Power Meter
Marconi the inventor?
Marconiphone Model 282 help?
FW: Martindale EZ150 mains wiring tester
Martlesham
Mast Anti Aircraft Lights
mast bearings
Mast head power measurement
Mast Head Pre-amps & Sequencing
mast head switching
mast repairs and antenna spacing
Mast to Boom Hinge, Rotator Torque reduction...
Mast trouble
Masterotator - not rotating fully
Masters Degree about SOE Agent Comms
matching RF levels
Matching transformer query.
MAX 497
Max6 VNA INFO from the Designer Jarek SP3SWJ
MAX6002 Susceptible to GHz RF
Maxwell
May be useful to someone...
Meacham oscillator
Meacham Reciprocating AM detector
VHF Field Strength measurements
[Fwd: Measuring Antenna Z using Balanced Line]
Measuring Crystals for a Ladder Filter
Measuring permittivity of silicon oil - Has anyone got spare hermetically sealed connectors?
SINAD - was Measuring S+N/N with averaging AC voltmeter
Medion GoPal E3410 SatNav
Mediterranean Bouys...28MHz?
MemSet590 -- Managing TS-590S memory settings with a spreadsheet
Merry Christmas and thank you
Message formatting
Message threads
Metal Masts
Metal working stuff
Metre amps and PMG Aerials.
Metre amps etc
Metric feet
Metric units
MFJ-1625 BALCONY ANTENNAE
MFJ 259 Analyser
MFJ-259 Slightly off topic
MFJ Antenna Analyser Problem
MFJ993B
MGM?
Mic help!
mic pin outs
Microchip Legacy Software
Micrometals T30 and T37 toroids, Al value?
Microset Power Amp
Microset RUV30 Linear Amp
Microswitches: I never dreamed it would be this difficult...
Microwatter & biased diodes
Microwatter and biased diodes.
Microwave Diode
Microwave diodes
Microwave modules 70cm Transverter off frequency
Microwave Modules 1296 transverter info sought.
Microwave Modules 144mhz 200w amp
Microwave modules 70cm Transverter off frequency
Microwave Modules linear info sought.
Microwave modules Liverpool - information or old employee?
Microwave Modules MM4001kb
Microwave Modules MML50-30-3 6m linear
Microwave modules transverter information needed.
Midas Graphic Display
Military Antenna base - Antenna wire connection?
Minature coax
Mini 8 Coax connectors
Mini aluminium greenhouse
Mini ovens for SM work
mini-UHF
MiniCircuits Mixers
miniVNA and Bluetooth
MiniVNA/MMANA
miniVNA Pro Extender?
miniVNA Pro and Bluetooth
miniVNA Pro Extender?
Miniwhip antenna over WiFi.
Mirage b3016 amplifier
Mismatched Antenna with gain (related to Thingy)
Missing Postings
Missing Posts
Mission to the edge of space.
Mistery WW2 (military?) comms receiver
MIT, anyone?
Mixer Musings and the KISS Mixer (revised)
Terminating diode mixers
MMANA-GAL Antenna Modelling software
MMIC RF amp
Mobile 12V supply smoothing
Mobile High SWR Range Rover Evoke
Mobile installation best practice
Mobile Mains Hum
Mobile operation
mobile phones knock-on effect
Mobile radio connection in vehicle with start-stop
Mobile RFI with a vengeance.
Not radio, but technical- Mobility Scooter Fault
Model aircraft servos in a remote ATU
Modeling vertical antennas with radials
modelling a sleeve dipole
Modelling capacity loaded quad
Changes to Moderation Team
Moderation Delays
Moderation of my posts
moderator
Moderator - error on RSGB website
moderator notice : blackberry
moderator notice : blackberry
Moderator - RSGB Tech / forum - Yahoo Changes - More
Moderator - RSGB Web Site Comments
Moderator - RSGBtech - RSGBforum
Moderator - Signing Posts & RSGBforum
Moderator - Signing Posts & RSGBforum
Modern car security - slightly OT
Modern Morse
Modern spell checking Higher impedence coax
Modes for tuning swr
Modulation/Demodulation software radio
Molex crimping
Molex power connectors
Monofilament nylon antenna supports?
Monofilament nylon antenna supports? - (plus cable ties..)
Moonbounce
Moonraker 70cm ZL yagi
More Connection issues FPC/FFC this time
More funny signals
More Radar Observations
More slightly OT -- weather station hardware
More slightly OT -- weather staton hardware
More SSTV over nanowaves
more techy stuff LVDS
More VLF observations
Morse abbreviations.
Morse and baudot codes
MORSE -GWBASIC -'SOUND'
Morse trainer application for Windows
Morse Trainers
Mosfet replacements
Mosfet transistors
Most dangerous page on PME Advice
Motor connections
Motorising a Tennamast?
Motorola Application Notes
Motorola Z322401 Rectifier specs?
Mould
mountain of mail issue
Mounting a HF antenna
Mounting Antennas on Brick Walls
Mounting radio heads in vehicles
Mounting TV aerials
Mounting UBlox Module
Move to GroupsIO - Update
move to io
MP3 Recorder Software
MR52P Meter
MRF247
MS Win 10
MSF 60KHz - current status ?
MSF in trouble
MSF in trouble (negative frequency..;-)
MSF off the air
MSF TIME Error
MSF timing check?
MSF v GPS ?
Mullard QY3-125
Multi band Fan aerial
Multi-element feed antenna
Multi input voltage high spec 13.8V SMPSU wanted
Multi-purpose bicycle service stand
Multi wavelength wires
Multi-way cable warning
Multiband HF dipole made out of mobile antennas?
Multiband WSPR beacon
Multihop skip focussing
Multimeter
Multiple callsigns
Multiple COM ports on single USB
Multiple Language amateur radio glossary
Multiple Power Supplies
Multiple rigs, one antenna
Multiple Spurious
multiple tx/rx installations
Murata filter info sought
Museum of radio and television
Mutec Front End & FT221R/225R/225RD
MuTek SLNA 144s
Mutual Inductance
My Callsign Isnt as old as you Might Think
My computer causes radio interference - Hardware - Forums - PC World Australia
My response to Radcom's response to Earthing.
Mystery Antenna
Mystery transmissions on 7 and 10 MHZ
N Connector thread electrical continuity
N Connectors for LDF4-50
N Connectors for LDF4-50
N plugs for LDF4-50
N type bulkhead sockets
N-Type chassis socket for Yaesu: was Caveat Emptor
N2VZ Turbo Tuner
N2VZ Turbo Tuner part II
Naive question
Name that mast
Narrow Signals
NASA's Juno mission invites radio amateur participation
NASA HF3/W Receiver
 Ofcom Amateur Rad io Licence Consultation Announced
NE602 8 pin DIL
NE612 as a tranciever
Near field strength
Need help for school sked for IMD
Need some advice re local 80mQRN
Need some help making PCBs with a simple 3-axis router.
Negative component symbol (non-Foster)
Negative Feed Back
Negative frequencies [was MSF in trouble]
Negative frequency
Negative impedance
negative modulo numbers
Negative resistance
Nested Aluminium Tube
Neutralisation
New Amateur Satellite FUNcube-1 on BBC Radio + Tracking Elements Released
New "Hint of the Week": Easy Access to Windows Audio Mixers
New antenna site and Yahoo group
new chip AM -FM low noise amplier
new chip lownoise AM FM amplifier
New EMC Directive
New file uploaded to rsgbtech
New frequency-response technique
new g5RV file uploaded showing radiation patterns for different installations
New General Discussion Forum
New graphics card for old Dell
New group member
NEW HANDBOOK COAX ERRORS
New HOWTO on Monitoring CAT Commands
New Kenwood HOWTO: AUTO Mode
New Licence
New light bulb for the future
The new-look TS-590 Family Resources Page is now up and running
New member introduction
new modes?
New OFCOM Consultation
New PSK31 satellite
new rediculous Yahood system
New RF matrix pad-board
New ridiculous Yahoo system.
New rig inside photos in RadCom
New RSGB PME Leaflet
New RSGB Publicity Video Link
New system at Ofcom
New to 6m....
New TS-590S HOWTO: Digital QuickStart
New TS-590S HOWTO: SSB Audio Setup
New TS-590S HOWTO: SSTV QuickStart
New TS-990S TechNote: SSB Audio Handling and TX Keying
New UK 60m Band Utilization Chart
NEW UK OPTICAL COMMUNICATION RECORD 111km
New Vehicle interference
Newbie - !PLEH
Newbie saying hello and seeking advice
Newsletter Issues
Newsletter Issues
Ni-Cd & Ni-MH Charger - Also charges single cells
Nightmare neighbours
NiMH automatic charging
NIMH charging circuit
NLJD and other things
Noble 70MHz radio
Noise 1.7 to 3 Mhz
Noise abatement ?
Noise detection
re Galactic noise floor
noise on 1.7 -3mhz
Noise performance of Injection-locked XO vs synth LO
Noisy audio chips
Noisy SMPS replacement
Nokia Digital Pen - paper pads wanted
Nokia Din 41612 connectors
Nokia Mobile Phone Charging
Non-Combustible
Non Conductive Rope
Non-delivery of QEX Magazine
Non Linear Junction Detector
[ot] Yahoo lists, via gmail (etc) (was Normameter R1)
Norman Fitch, G3FPK, SK
North Herefordshire antenna HELP: Radcom
Northwood HF Weather Fax Broadcasts
Nostalgically curious - 1970's vintage Topband AM Tx
NOT CIRCULAR POLARISATION But twisted vortex radio waves
Not-Doppler direction finding
Not exactly technical but amateur radio question
Not exactly technical more a test of my (failing?) memory
Not radio, but technical- Mobility Scooter Fault
Not Radio - NEED HELP ON GUEST HOUSES FOR MY TRIP IN UK
not stuffed
Not very technical X & Y rated capacitors and a word of caution.
Novel application of narrowband spectral analysis
novel QRP/QSK by G4ENA
November RadCom
novice b
Now for one on chemistry
Now for something completely different
NTP time server accuracy (was something different!)
NTP [was MSF off the air]
Nulling out VDSL interference on lower frequencies.
Cathode envelope feedback (was Number of QSOs per bandwidth)
NVIS for dx! [was Trapped antennas]
NVIS thoughts?
Observation- hearing problem and SSB
Obtaining simultanious RF Levels
OC171; Internal Shorts
OC171; RUSSIAN TRANSISTOR DATA
OCFD vs Doublet
Octal valve sockets with loose ring
Odd Am CW Satellite reception
Odd CW code on 7MHz
Odd results trying to measure permittivity of water
Oddball earths
Oddity in SDR calibration
Fwd: OFCOM 143MHz - 169MHz Statement
Other detials, Ofcom Amateur Radio Licence Consultation Announced
Ofcom's approach to VDSL (article in Jan 2017 RadCom)
Ofcom and EMC
OFCOM and Interference Reporting
New OFCOM Consultation
Ofcom Consultation: Technical Question
Ofcom email hacking
Ofcom letters - Please Stop (Last one, hopefully!)
Ofcom letters - Please Stop (Last one, hopefully!)
Ofcom letters - Please Stop (Last one, hopefully!)
OFCOM LETTERS THREAD
Ofcom Licence Notice
Ofcom Licence Review - another reminder,
Ofcom Licence Review - another reminder, responses really are wanted
Ofcom licence validation.
OFCOM Notice
OFCOM / PLT Statement
OFCOM Publishes Amateur Radio License Consultation - Country identifiers
OFCOM Publishes Amateur Radio License Consultation - Country identifiers
OFCOM Publishes Amateur Radio License Consultation - Country identifiers
OFCOM Regulations for Controlling Interference
Ofcom Reporting PLT Interference
Ofcom seeks stakeholder views on potential uses of spectrum between 143 MHz and
Ofcom selling off (part of) Baldock?
OFCOM to Investigate Interference to Key Fobs
OFCOM VHF Consultation Document
Off-air frequency standard accuracy
Off list browser help request
Off list: Modulation/Demodulation software radio
Off subjects altron sm30 info
[drifting off topic] Compass Compensation
Off topic: Am I fully protected if I use Paypal?
Off topic but hopefully of interest
Off Topic Discussions (Was New Licence)
Off Topic:G3FPK spam emails
Off topic hi fi speakers
Off Topic Posts
Off Topic - RSGB Forum Group
off topic thought/question
OFW287
OHR?
OKI Soldering Irons
Old ?
Old ammeter
Old (and not-so old) Transformers
Old BT / Pre BT? Issue leather tool cases?
Callbook details & Old Callsigns
Old Connectors Wanted
Old Handbook
Old Hygain av18avt
Old licecnce documents
Old magazines
OLD MAPLIN PCB
Old ON-Digital Boxes
Old Radcom aricle - RTTY video display.
Old Radio's new Microphones...
Old SMD ally cap value?
Old Technology for a Change!
Old topband Tx design
Old TTL and supply volts
Old versions of HRD and new radios
Oliver Lodge Puzzle
OMG What have the RSGB done to their website
Omnidirectional antennas at VHF
Omron PSU
On the avoidance of key clicks - and going practical now
On the avoidance of key clicks - and going practical now
On Time or Perhaps Not?
One antenna feed - two receivers
One for the "bit bangers" out there. Further...
One for the "bit bangers" out there. Further...
One for the EMC Gurus
One for the old timers.
One for the oldies - Looking for a Wood & Douglas circuit diagram
one for the paranoid
One stop shop
Online licence renewal
Online Poll about Analogue Repeater Use?
ood superglue - OT
Oops: A Rigol DSA815-TG Viewer Anyone?
Open feeder impedance
Open Wire & Relays
Open Wire Feeder Relay: Switching of
Open Wire Feeder Relay: Switching of
Open wire feeders
Operating in france
Operating out of band guidlines
Licence Part 2 T&C's (was Operating outside the UK)
Operating Technical Query?
Operating Technical Query re using BREAK_BREAK
Operation at LF
Operation Crossbow; G3FZL?
Opinions Sought on RF Testing Facilities
Optical com's (was packet radio and IP over radio (ampr.org))
Optimal value for ATU components.
Optimum aerial length?
Optimum dia to length ratio for given wire length?
optimum feeder length
Optimum LC ratios for VFOs
Optimum LC ratios for VFOs
Orange PI plus
ORBEM On these pages are pictures of old BBC radio equipment
Ordering by private individuals
Origins of the term "Flat" battery ..answer
Origins of the term "Flat" battery ..answer
Oscar space saver traps?
Oscillator Phase Noise
Oscillator Pinout help needed
Oscillator stability
32kHz crystal oscillators
Oscilloscope supplier?
OT: (and longish) Virtualization vsus Dual Boot (was Looking for Windows 7 QuickMix)
OT:Bluefin AmateurRadio Insurance
OT: Broken URLs in postings
OT but someone may know...
OT: Colorimetry (was: OT: Is 6200K Biologically Active?)
[OT] DECT Wireless Phone Line Extender FM/DAB
OT Drive shaft coupling
OT: flash
OT G scale PWC controller
OT Home Automation
OT: HRD on Linux and other issues was External backups
OT: Is 6200K Biologically Active?
OT(ish) WiFi Wireless Access Points
OT: Licence vailidation
OT: Licence validation
OT: Looking to contact an amateur on Harris
OT ? : Manual for Marconi TM9953 RHO Bridge
OT: Neil Armstong Has Died
[OT] Nightmare neighbours
[OT] Ofcom Spectrum allocation.
OT: Old ON-Digital Boxes
OT PIC MPLAB on MacOS
OT: PMR446 - What is it like in practice.
[OT] Possible future fibre broadband interference
[OT] Practical Assesment: Foundation & Intermediate exam.
OT: Qt or Visual C++ 2010 Express
[OT] RadCom Plus (EPUB etc)
OT:recommendations for a reliable mobile phone co. with good ser
OT:recommendations for a reliable mobile phone co. with good service
OT: RFI - Yet another version of the beast?
[OT] Roof ridge tile mount bracket
OT - rust removal
OT: Salt in dishwashers. 13.8V PSU power requirement when 'off' - now even more OT
[OT] Smart Meters; what frequency?
OT Solar PV do they have any EMC issues ??
OT Solar PV do they have any EMC issues ??
Subject: OT: Soldering Iron Bit Query
OT: Sound Card Utility
OT: spurious formatting codes
Ot tech for radio, but still tech question
Ot Tent waterproofing
[OT] Thunderbird email
OT: Totally Compact Analogue Voice
OT: Trying to identify 8-pin connector with threaded retaing ring
OT: TX power
OT: UK Electricity demand state
OT(very): Twin Xtal Watches
[OT] Vintage Audio Amp.
OT - Wanted.
OT: Website hosting package
OT - WiFi Repeater
OTH radar observations
OTH radar observations (was 20m interferance)
Other detials, Ofcom Amateur Radio Licence Consultation Announced
Other folks having VDSL problems...please report it !!
Other UK ham radio reflectors?
Other Yahoo Groups Working
OTisn but technical: Telephone Lines
OTT Packaging
Outdoor LED PIR Security Lighting
Output Loading & Splatter
Output of TX Waveform
Overhanging Trees
Overseas Purchases (was Digikey UK)
OZ7BO electronic keyers info needed
P.A.T.testing again [1 Attachment]
PA IC
PA spurious oscillations
PA watercooling - heat-conductive paste choice?
PA0FRI Website
Pace BSKYB digi box PSU [OT]
Packet mode
Packet in the UK?
Packet mode
"NOSintro --TCP/IP over Packet Radio" now available as a free download
packet radio and IP over radio (ampr.net)
packet radio and IP over radio (ampr.org)
Paint & Fonts
Paint & Fonts
Paint / IPA
Palstar PS30M floating output.
Panel antenna for dongle
Panel decal design software suggestions?
Panel Labels
Panel Lettering
Panel Meters
Parallel wires
paralleling coax
Parallelling coax
Parametric Frequency Changing
Park Air Base station
Part P- Who Knows what it is and it's Impact
Parts source
parts source needed
pAT hAWKER'S ARCHIVES
Pat Hawker's archives to be auctioned off
Pat Hawker - RSGB Position
PAT testing [was HF RFI]
PAT testing 'Wall Warts'
PC Builder not meeting CE
PC Headset
PC Monitors
PC Osciloscopes
PC PSU Interference
PC PSU Interference
PC Sound Card as VLF Rx
PCB...anyone ?
PCB CAD packages
PCB design ( Eagle 8.1.1)
PCB Etch Tanks [1 Attachment]
PCB Etchant
PCB Hex standoffs
PCB in shape of London Underground Circuit Map Radio
PCB makers
PCB makers & Repair Kit s
PCB Manufacturers
PCB Material
PCB proto shop 4003C/4350/Arlon?
PCBLayout Packages
PCBs in Capacitors
PCBs in capacitors UK Govt HSE Advice
PDF Files - and unanswered questions
Peak Atlas DCA-Pro latest software / firmware
Penetrox
personalised feeder ?
Petlawany Type Aerial
Petrol / Diesel Engine noise and Noise Blankers
Peukert's law - Lead Acid Batteries
PGS as heatspreader
Phase component of Olivia (was some other subject!)
Phase Distortion - what is it?
Phased distortion - what is it?
Phil Karn KA9Q ISEE-3 and PSAT PSK31 Transponder Satellite talks this weekend
Phone (and other gadget) mains powered USB chargers, a review of.
Phone Systems
Phones and Telephone Receiver Levels
Phonetics - was Refreshing Advice
New rig inside photos in RadCom
PI and Arduino for Amateur Use (Was I Need a Small Monitor)
PI4 Test Transmission
PIC behaviour
PIC Microcontrollers
PIC Programming for the terrified
PIC Programming for the terrified
PIC16F1783
PIC16F84 oscillator dies
PicATUne
PICATUNE ATU construction article appeared in RSGB between sept2000 to Jan2001
Picaxe Vs Arduino.
Pick you collective brains
Pickit 2 and dsPICs
Picoscope ADC-200 USB/Parallel converter
Picoscope as SDR front end ?
PIN Diode Source - Please?
PKT BBS on 144.825
PL 259's
pl 295 and other connectors. [4 Attachments]
Boot for PL259
PL259 - Denso-Tape
PL259 plugs
PL259 screw on type
pl259 vhf/uhf plugs.
PLANNING APPLICATIONS
Planning permission
Planning - Permitted Antennas
Plasma antennas (was "The thing..")
Plasma ball query
PLC interference competition
test please ignore
Please Join - JOTA_Trans_Recievers-VU
Please trim posts
Plessey CN500 Series ICs
Plotting noise levels on an OS map
PLT Question
PLT and EU
PLT - another issue
PLT Ofcom's PA Consulting Report
PLT PA Ofcom Consulting Report - mitigations
PLT/PLA Interference
PLT/PLA Interference
PLT Question
PLT versus WiFi usage.
PLT vs. WiFi networks
Plugtop PSU input voltage range
PME anf RF earths
PME, Earth Bonding and RCCD
PME Earth Rod
PME Earthing advanced leaflet
PME Earthing Rod ?
PME - it did happen here.
PMR equipment on AR frequencies
Pocket RX/TX
POCSAG and SCART
POE Voltages
Polite reminder- Identifaction
Polite reminder- Identifaction
Poll results for rsgbtech
Polyweave aerial wire
Poor mans Stepir type vertical antenna
Poor mans Stepir vertical
Porthcurno Telegraph Museum
Positioning of T&K mast brackets?
Possble trap failure?
Possible future fibre broadband interference
Possible new RF earth system
Possible spurious emission on 7 Mhz
Post Office Splice
Post Office Splice was badly made wire antennas.
Reminder - Posting Identification - Again
Posting Problems
Posting Problems and Moderation.
Posts out of sequence
Potential Supplier ?
POTS connections through the house mains wiring?
Powdered iron toroid loss question
Power allocation and Band History - 70 MHz
Power Amplifier and Linear Amplifier.
Power Amplifier Output Coupler Overheating
Power Cables
Power Cables & Cables in General
6 pin Yaesu / Kenwood DC power connectors
Mains power factor for commercial valve amplifiers
Power factor controllers
power factor correction inductors
Power Factor -- my experience using an 850watts unit
RF Power FET protection (was SMPSU chip)
[Bulk] Power in contests
POWER LEVEL RELATING TO PSK31
Power line adapters
power line communication: lecture
Power Line Interference
Power line regulation.
Power Lines Communications
Power One PMP 13.48 SIC SM PSU
Power Optimisers
Power sled kites
Power Splitters / Couplers
Power Splitting
Source of scrap ATX PC power supplies?
BNOS Power supply 12/6
Power Supply in a Ford Mondeo
Re : Power supply quandary
Power Supply Question
Power supply wanted for Pa0rdt antenna.
Powewr Supply Question
[OT] Practical Assesment: Foundation & Intermediate exam.
Pratical Wireless 144mhz contest (today)
PRC-320 Group Invite
PRC-320 Group Invite
Precision Screwdriver Bargain
Predistortion to improve IP3 (was Number of QSOs per bandwidth)
Prefix change
Premier Farnell Changes Hands
Presentations on UK School ARISS Contacts
Preston area dealers?
PRF
Printing RadCom Plus
Problem downloading
Problem with message approval
Problem with short replies
Problems with reading the UBN reports on the VHF/UHF contest results
Problems with SGC230 Smart Tuner
Professionals who are Hams
Programmable attenuators
Programming Languages
Programming Languages was Real-Time short delays in VB6
Project Rainbow....
Projects
Prolific Drivers and Error Code 10 (yes, it is radio related)
WSPR on 2m? (Beacons & propagation)
Propagation around the UK on the 40m band
Propagation Near the Sea
Propagation Studies Committee
Propogation puzzle
Proposal for IMD reporting: "RSI" reports
Protecting SMPS against filament inrush current
Protective Earth Chokes.
Protective Ground - was Refreshing Advice
Protective Ground - was Refreshing Advice
PRP 73 Chargers
PS2 Keyboards
Phil Karn KA9Q ISEE-3 and PSAT PSK31 Transponder Satellite talks this weekend
PSK Average power reading
PSK interface with Yaesu FT1000MP
PSK Sounder & STANAG4285
PSK31 adopted by ITU
Warning - Revex P300 13.8v DC PSU
PSU Input Current Waveform
PTFE
PTFE Temperature Rating
Public libraries get online access to research journals
Why does RadCom no longer have the date of publication on the fr
Pulleys for versatower
Pulse Dialling
pulse measurements
Pulse transformer - SPS8250 repair (Palstar/Manson branded PSU)
Pulsing 50 MHz
pulsing 50 MHz - something else
PULSING SWR
Puma RF power amplifier BIT-07
Push pull transformer configurations
PVC TUBE
PW?? GDO
PW Publishing
PwerEX MH-C9000 WizardOne Battery charger
Pye Cambridge M87 20amp power supply
Pye MX294 - Modifications
Q-Codes in normal speech
QEX and Lightning Arrestors
QEX and Lihghtning Arrestors
QR Codes Hell
QR Codes Hell
QRM DF Antenna
QRM - NARSTIE!
QRM on 10m now
QRM on 10m now (2014-08-31 1100z)
QRM on 3637KHz
QRM on 40M and 0m
QRM solution
Need some advice re local 80mQRN
QRN on 12 to 6m
QRN on 40M
QRP tuner kit etc
qrp tuner kit off ebay for £10., not bad price but i cant get it working
qrp tuner kit off ebay for £10, no t bad price but. i cant get it working
qrp tuner kit. off ebay for £10, not bad pric.e but i cant get it working
qrp tuner kit off ebay for £10 , not bad price but i cant get it working
QRV TK5- an Apology
QSD Mixers
QSK with SDR transceivers
QSL card label printing
Qt or Visual C++ 2010 Express
QTH Move Antennas
Quad array?
Quad band antenna 6/4/2m/70cm
Quality of reviews of antenna analyzers in RadCom
Quantifying speech processing
Quarter wave coax matching stub for 40 m vertical
Quarter wave stubs
Quarter wave vertical on top of a mast
Earth strip resistance question
Question about RAE
Question about Splatter
Questions about feed-point ATUs
Questions re Radials for Mulit-band elevated HF Vertical
Quick survey of knowledge [1 Attachment]
QuickMix replacement for saving audio levels
Quiet Keyboard
Quoting posts in replies
R+S SMG Signal Generator problem
R820T Register Programming
R820T2 dongle
RA07h0608m - use in linear mode [1 Attachment]
Racal 8m Mast Valve Thread?
Racal 9104 Absorption Power Meter
Racal 9916 ext ref frequency
Racal Auto ATU PCB details
Racal BCC Jaguar
Racal/Clandsman military mobile whip mounts
Racal=Dana 9232Q power supply
Racal Mast Spares and info.
RACAL RA17
Racal VRA549
Rachet Crimping Tool for Anderson Power pole Connectors
Racket on 40m
10945 RADAR Book
Radcom Dec 2017 - Design Notes - LZ1AQ broadband Active Loop antenna
Radcom & Radcom+
Radcom Antenna Articles
RADCOM author's guidelines
Radcom Bandplan Questions - 2
RADCOM bits on the reflector - PART 2
Radcom (Dated Jan 2015)
Radcom Dec 2017 - Design Notes - LZ1AQ broadband Active Loop antenna
Radcom online version, free to view for ragb members ??
[OT] RadCom Plus (EPUB etc)
RadCom Plus & Kindle
RadCom Plus and Printing of Magazines.
Radcom Plus and youngsters into radio
Radcom Plus DG8
RadCom Plus Folders Added
Radcom Plus iss 2
RE Radcom Plus - training digression
Exams (became somehow "RadCom Plus: UHF Transceiver" !)
RadCom Plus: UHF Transceiver - or not!
RadCom TMRF 2010 review
Radiall coaxial relays R.565443
ICNIRP limits and radiation exposure to Amateur Radio Operators and
Radiation levels at a public event
Radio Advice Please
Radio controlled clocks
Radio installation in VW Passat
Radio keys for cars
Radio Programming Software
Radio Progression (was Yaesu Vision of Digital)
Radio Propagation Questions - RSGB Forums
radio regulations
Radioactive circuit breaker [1 Attachment]
RAE hobbyhorse again (Was Radcom Plus)
RAF 3 Wire Half Wave Folded Dipole [1 Attachment]
Rain Absorption of GHz Signals
Rally stall-holder for batteries etc.
Random wire or minibeam
Rapid PS3025 power supply
Rare VLF signal on 15.1 kHz
Raspberry Computer
Raspberry Pi 2's
Raspberry Pi 2's
RCA AR8516lLComms Rx info request
RCD getting warm - why?
RCD trip ratings
RCD tripped by 144 MHz transmissions
RCKSkimmer
Re; 145 Mhz QRM
Re 17 Element Tonna
Re[2]: 10 watt limit
Re[2]: Last Letter in RadCom
Re[2]: Tilt & swivel vice, .5.99 @ Aldi on Sunday
Re%3A%20SX%2024%20Oscillator%20problem
Re "worries about station earthing".
Re; Amplitude modulated CB comes to the UK
Re Balun test
Re :Baluns and remote auto ATUs
Re :Baluns and remote auto ATUs
Re Bandpass filters
re Bricom safetune [1 Attachment]
Re built Jaybeam Quad Antenna
Re Bury or Elevate Coax
re components suppliers
Re crimping
Re; Designing a house for amateur radio
Re; DV calling channel
re Galactic noise floor
Re; Goniometers
Re H T Transformer
re Huff and Puff on old sig-gens
Re-issued licences
Re; Magnetic Amplifiers
Re Paint:
re PL259 plugs
RE Radcom Plus - training digression
Re. Receive Antenna distribution systems
re RF sine to square wave
Re SKY routers.
Re SO-239's
Re;Space charge
Re;Static Drain
re Twins
Re; Two tales
re valve books
Ofcom Licence Review - another reminder, responses really are wanted
Reaction etc
[rsgb_lf_group] A real COM port for laptops
Real time plotting on Google or Bing Maps
4a. Real-Time short delays in VB6
Really Long LFSR
Rebar
Rebuilt Q6 Jaybeam
Receive Antenna distribution systems
What would have happened (was Valve receiver design)
Receiver input static protection
Receiver noise
Receiver overload by nearby HAM
Receiver radiations
Receiving loop antenna by JA Lambert
Receiving SAQ without a PC
Rechargeable Batteries
Recharging NiMH cells
Recommend a VERY short HF mobile aerial? (or plans to build my own?)
Recommendation for Parcel Company
Recommendation of different/new ATU.
Recommendations for a Handheld
Recording & Sound Cards, Satellite TV and Satellite Internet in GW
Recovering Lithium batteries
red and black flex
red and black flex
Red Pitaya SDR TRx
Redcliffe 100 Gauss meter
Ref new Radio Equipment Directive (RED) Kits & Mods aka experiments
Reflections (was "Antennas & MPTT")
Refreshing Advice
Refreshing Advice: tutors
Registered Number of Hams
Related: GB3VHF3
Relay control over a 2-wire line
Relay-Switched BPF - Wetting Current
Open Wire Feeder Relay: Switching of
HF Switching Relays
Relays for external antenna switches
Rem,ote tuner
Polite reminder- Identifaction
Reminder - Posting Identification - Again
Reminder - Posting Identification - Again
Reminder - RSGB Web Site Comments
Remit ?
Remote Antenna Switch Yaesu FAS-1-4R
Remote ATU recommendation?
Remote ATU recommendation?
Remote Battery Charging
Remote control of radio via Skype?
Remote Control Relays & IC740
Remote DF project
Remote DF Project - Any Ideas?
Remote Metering
remote operation?.
Remote Relay Switching
Remote Relays...Clansman...NVIS
Remote Telephone Iterrogator
Which remote tuner for doublet?
Remote VHF WSPR Beacon
Repair Cafes
Repair to FT1000MP
Repeater Backup Battery Schematic
Ofcom to licence exempt mobile phone repeaters
Replacement HT batteries
Replacing a 470µF 10 v Radial Electrolytic Capacitor
Replacing a 470µF 10v Radial Electrolytic Capac itor
Replacing a 470µF 10v Radial Electrolytic Capacitor
Reply to Alan!
Reply to Chris
reply to ken!
Replying to digest messages
Replying to digest messages (was Digest Number 1650)
Report: conversion of house earthing to T-T
Reporting interference - howto?
Repulsive electrons
Request circuit diagram for remote tuning of a Magnetic Loop
Request For Comments on EH antenna document
Request info on Automatic Magnetic Loop Antenna tuner project article in the August issue of Radcom by G3LDO
Request info on Automatic Magnetic Loop Antenna tuner project article in the August issue of Radcom by G3LDO
Reset of Transceiver AlincoDX70TH
Resilience of mall generators
Resistors - Carbon v Metal Film
Resonance & Xtal meter
Resonating HF counterpoise
Response Analysis - Topic Diversion +
Responsibility
Responsibility and Dangerous Antennas
Resurrecting an old iPhone
Retro RTTY: G3WHO Software / BBC Micro
Return Loss on Quarter Wave Vertical
Returning radio back to manufacturers
Reusing Disc Drive
Reverse Engineering
Reverse polarity and Power Mosfets
Fwd: Review of EU Legislation
Revised version of Armradio
RF antenna splitter
RF Chokes
RF Damage
RF dynamic dummy load?
Rf earh/mains earth
Rf earth/mains earth [1 Attachment]
Rf earth/mains earth & Residual Current RCD's -- sensitive to pulsating currents
RF leveling or ALC circuit please
RF losses in epoxy resin
RF PA FETs above 13.6V
RF PA supply voltage vs. output impedance
RF Power Amplifiers Free webinar
RF Power FET protection (was SMPSU chip)
Rf Power measurement at Yagi feedpoint
RF Probe
RF proof RCDs
RF Relays
RF Safety FAQ's / antenna safety ect
RF Survey
RF Switching
RF Transmission through Polycarbonate
RF welders
RFCandy Webshop
RFe: 10m SSB sets being sold in CB shops
RFI protected outdoor security led lights.
RFP 1109 50 ohm load - datasheet request
RFP for radio propagation-related project
RG142 cable
RG58
RGB LED Chip
Rhombics and SWR bridges [was 5wire transmission line]
Rhombics and SWR bridges [was 5wire transmission line]
Richard Brett-Knowles
Rig control software
Rigol DS1102CA Oscilloscope
Rigol Spectrum Analysers
Rigol spectrum analyser and Ultra Sigma
Rigol Spectrum Analysers
Risk assessments
RJ Connector
RL measurement
Roaming cats?
Roaming cats? [OT by now]
Rob Sherwood's Dayton 2013 presentation on Contest Radio Performance
ROBERT FAREY's Postings
EMC issues with robotic lawn mowers
Roller Coaster problem
Roof rail antenna mount
Roof ridge tile mount bracket
Guy ropes and guy stakes 'PARAFIL' cable
Ropes and UV
ROS Software Help please
rotation limit switch arrangement
Rotator Controller Capacitor
Rotator Drive
Rotator...grease
Rotator Help
Rotator loading
Rotator Motor Capacitor values
Rotator Motor Capacitor values
Rotator Motor Start Capacitor
Yaesu G1000DXC rotator problem
Rotator Question
Alfa SPID Rotators
Rotators [was: 2m beam suggestions]
RS 434-223 Waveform generator
RS Components Coaxial Relay
RS Components Coaxial Relay
RS Comps Xtal Osc.
RSARS e-LIbrary 4 new small mag loop articles
RSGB announces 'RadCom Plus'
RSGB Article re parallel dipoles
RSGB at BP
RSGB board proceedings
RSGB Centenary - Input needed
RSGB Centenary Receiver
RSGB Convention 2017 - Full ticket for 2 people available
RSGB Convention 2010 Horwood House
RSGB Convention 2017 - Full ticket for 2 people available
RSGB Convention - Meteor Scatter for Beginners video
RSGB Convention programme
RSGB Convention - Software Developers Forum
RSGB Convention -- when does it start?
RSGB EMC Matters Forum
RSGB ferrite rings circa 1990
RSGB HF Convention
RSGB IARU Meeting Consulation
RSGB IET Lectures Available
RSGB January 2012 Newsletter
[rsgb_lf_group] A real COM port for laptops
RSGB members only pages...
RSGB Newsletter
RSGB newsletter Jan 2010 : The challenges ahead
RSGB newsletter Jan 2011
RSGB Noise Measurement Campaign
RSGB ofcom and the MP
RSGB online survey
RSGB prepared to defend CW
rsgb rss feed
RSGB Sprint this week: Wednesday or Thursday?
RSGB-supplied Toroids
RSGB Tech - Yahoo Changes
Propagation Maps now available on the RSGB website
RSGB Website EGM Anouncement
RSGB Yearbook 2014 vs Callseeker Plus 2014 CD
RSGBForum
New file uploaded to rsgbtech
RSGBTech Disclaimer- No Followups PLEASE
RSGBtech - What it Says on the Label
[RSGBtutors] Fw: Connecting Transceivers in Vehicles - Change of Recommended Practice
RTL-SDR
Rugby Time signal on 60 Khz
Rules for Repeaters and Beacons
Running DOS SW for older Radios
Russian Mains Frequency?
Russian REV15 coaxial relays
Russian taxis on 10m
OC171; RUSSIAN TRANSISTOR DATA
RX FRONT END PROTECTION
RX FRONT END PROTECTION (GB3MCB)
Rx overload
70 MHz RX sensitivity
S.E.M QRM Eliminator Clone
Sad News (Vacation Problem)........ Andy Talbot
HF ground plane antenna/radials - safety
Salt on mobile aerials
Sandpiper Antenna MV7 6/10/15/20/40/80/160 mtrs height 4.00 mtrs
Sandringham School students prepare for ARISS contact with Space Festival Week
The SAQ transmission of Christmas Eve
SAQ TX Friday
Sat Traffic
Satellite Antenna Spacing
Saturating inductors (was Diplexers and mixers)
SB-2000 & IC-7000
Schematic drawing s/ware?
Schematic required
Schottky rectifier diodes in series
schottky rectifiers in series of Digest Number 3206
Scottish independence
Screening, tin plate boxes...
Screwdriver antennas for base use
SD 1407 Transistors
SD 2391
SD 2931
SD2931 Failure - Spin off
SD2931 Failure - Spin off
SD2931 Linear Amp
SDR's & related Terminology
sdr and dtv dongles
SDR in analogue mode
SDR Interference Examples
SDR performance
HackRF & SDR Radio
(sdr radio on line)
SDR Radio Software - missing a trick?
SDR Receive Choice..?
SDR Sharp on win 8.1
SDR sharp on win8.1
SDR Software
SDRplay
SDRplay RSP
sealing cables
Sealing connectors
Sealing connectors etc.
Searching for an accurate inductance meter.
Second (or third) opinion sought.
secret machines
secret machines : link
Secretary
Seeking pole/zero filter design info
Seimens Morse Inker
Self-amalgamating tape and RF
Self build Antenna tuner
Self Confidence
Self Confidence - is it really?
self fluxing enamelled copper wire
Self training or formal tuition ?
SEM Amp
SEM Sentinel VHF Preamp
SEM Transmatch
SEM Tranzmatch ATU
Semi-rigid working voltages
Semi-uspect Chinese UBLOX GPS
Sensible Proof reader required
sequencers
Serial cable adapter
Serial port Questions
Serial Port / USB Logger coming soon
Serial Ports
Series Fed Vertical:ON4UN
series pass devices in linear power supplies
Service Cable Repairs - A Warning
Service Connections
Servos
SES's
SES for on Ofcom website
SGC Equipment repairs
SGC MAC200 - Burn-out
Shack Clock Accuracy
Shack computer
[Spam] Shack Earthing -Safety and RF
Shack mains power wiring
Shack phone
Shack phone/broadband extension
Shack Power: A Follow Up & PBX Question
Shack Power: A Follow Up & PBX Question
Shack Power & Earthing
Shack safety / RF earthing
Shack safety / RF earthing and RCDS that are Pulsating d.c. fault current sensitive.
Shannon and Information theory on BBC4
Mains filters (was SHED WIRING)
Shimizu Denshi SS-105D - how to fit the 100 Watt PA?
shipping charges
short 80m vertical
Short mobile antenna
Short Term stability of several Typical 10MHz reference sources
The SI570
Sifam panel meter
Signal Conditioning - Engine RPM Sensor
signal generator
Signal Generator DFM output.
Signal on 145.135 to 145.140Mhz
Signal on 3.533 MHz
signal on 3.533MHz
Signal puzzle solved
Signal puzzle solved after S+N/N discussion
Signalling on the mains
Silicon carbide schottky diodes
Silicone adhesive sealant
Silicone spray on aerial traps - Finale
Silicone spray on aerial traps - Finale
Silver plated wire
Silver plating.
Simple DSPic IQ Generator
simple low cost accurate c meter -- Clarification
simple low cost accurate c meter -- Clarification
Simple soundcard LCR Meter
Simple Topband class-C PA with a few quirks
Simulation software
SINAD - was Measuring S+N/N with averaging AC voltmeter
Sinch Jones connectors
Single hole chassis mount SO-239
Single Stage Class-B
Single Wire Transmission Line (Gabau line)
Single Wire Transmission Line Goubau Line
Sirio 2020 Radials
Sirio 827 on HF Bands
Skin Effect
SKY-221 SDR
Sky SR 101
Sky Sweeper
SL1640
SLA BATTERY CHARGER
End-fed antenna matching (was slack dipole)
Sleeve multi-band dipoles
Sleeve / Skeleton Fed Multiband Aerials
Slightly off topic - Doppler DF loan/hire needed
Slightly off topic - Doppler DF loan/hire needed
Modern car security - slightly OT
Slightly OT Gluing Plastic
Slightly OT Radio Clubs as Charity or Sports Group
Slim Jim for 145 MHz
Slow contests
Slug Tape and 80m verticals
SM PSU repair
SM PSU vs Linear PSU audible noise?
SMA Tapping
small circuit diagrams
Small components orders
Small - Efficient - Wideband - Pick any two
Small transmitting loop - near field
Smart Meters; what frequency?
Smart Meters; 3 - day week
Smart meters EMC/RFI ?
Smart Meters (was Interesting TVI case)
Smart Meters; what frequency?
SMC 15SE - any old-timers with good memories ?
SMC Soldering Stations
SMD and Eyesight etc.
SMD component supplier
SMD equivalents of through hole components
SMD jig
SMD Marking
SMD Storage packets
Smith chart method for designing L networks.
SMPS diodes in series
SMPS Noise - Ouch!
SMPSU and EMC
SMPSU chip
SMPSU NOISE ON TV AUDIU
SMT Components
SMT Construction Notes
SMT Tantalum Capacitors
SO-239 Connector Supplier
SO-239 Connector Supplier/dipole balun.
SO-239 Plugs
So I am clearly stupid!
Software Area
Software for monitoring voltage/signal level
Software for the RIGOL DSA815TG Rear USB Socket
Software PLL on a PIC?
Software written in C++
Solar activity and the planets
Solar events
Solar Flares on LF bands
Solar panel interference
Solar panel optimisers
Solar panel query
Solar Panel RFI
Solar panels for /A
Solar panels and interference
Solar panels for /A
Solar Panels ? No or yes
BC band QRM check Solar PV inverter
Solar Storm coming?
Solar Storm coming?
'Hakko' Solder Station Mystery
solder gun
solder smoke 137
Solder v Crimp
Soldering iron sponges (yes you read that right!)
OKI Soldering Irons
Soldering made easy comic book
Soldering PL259s
Soldering skills
Soldering SMD
Soldering stainless steel wire.
SMC Soldering Stations
Soldering station & LEAD FREE Solder
Soldering v crimping was Crimping or soldering Anderson Power Pole co nnectors
Solderless Connectors and Ecoflex
soldersmoke 117
SolderSmoke #122
SolderSmoke #123
SolderSmoke 126
SolderSmoke #127
SolderSmoke 129
soldersmoke 133
soldersmoke #135
SolderSmoke Amateur Radio Podcast 131
SolderSmoke book available free on Amazon
soldersmoke.com/soldersmoke136
SolderSmoke Podcast #124 is available
SolderSmoke Podcast 125
SolderSmoke Podcast 128
SolderSmoke Podcast #130
soldersmoke132.mp3
Solid State PA biasing (was Exploding capacitor.)
Some questions about nec2
Something completely different - Generators.
Something for home brewers
Something for the chemists (OT perhaps ?)
Something for the thinkers and tinkerers.
Something to ponder in the long, hot, hazy days of summer.
Something to ponder in the long, hot, hazy days of summer.
Something to stay up for MORSE IN THE SKY !
Something vaguely "Technical".
Son of The Thing:Thingy
sorry brian but this does need some debate.
Sorry for the repeats
sorry guys.
Sort of Related to Tant Capacitors...
Sottish Independence?
Sound Card for Digimodes
Sound Card problems
Sound Card problems in Windows 8.1
Sound level reference level?
Soundcard based radios SDR
Soundcard Test for SDR
Source for AD8307
Source for Cornell Dubilier SMD Capacitors
Source of multi-core cable and coaxial realys
Source of scrap ATX PC power supplies?
Source of semi-rigid coax
Spa\ce Bubbles
spacew web site
Space charge
space weather sites
spacew web site
Spacing of carolina windom feeder to vertical pole
*** SPAM *** RF antenna splitter
[Spam] AGM 17th April 2010
*** SPAM *** RF antenna splitter
[Spam] Shack Earthing -Safety and RF
*** SPAM *** TX power
[Spam] VHF ANTENNA
Spares desert in the EU
Speaker Systems
Special calls
Specifying a rotator
Tracking generator for spectrum analyser
Spectrum Analyser & Tracking Generator
Rigol Spectrum Analysers
Speech intelligibility [was: Widening FT-450D...]
Speech Processor
Speed of light slowed down!
Speed of Radio Waves
Spice models for Minicircuits MMICs
Alfa SPID Rotators
Spiral wound carbon film resistors
Sporadic E Mathematics
Spread spectrum & frequency hopping
Spread-Spectrum and Olivia
spurious formatting codes
Spurious signal
Spycatching with local oscillator radiation
Square/rectangular holes
Square/rectangular holes Abrafiles
Squaring an RF sinewave
SRD
Sri Lankan amateur radio equipment restrictions
SSB audio quality
SSB Electronic SB-2000
SSB Electronics LT2S transverter
SSB, FM and super capacitors
SSB generation
SSB Pep power setting.
SSB Power Setting
SSB Transmission Bandwidth
Stacking aerials
Stacking triband beams
Stand alone 10m WSPR TX
Stand Alone Voice Keyer
Standard C500 Handheld
Standard C78 Help
standard phonetic or adapted
standard phonetics or adapted
Star / Delta Rectifier
Star SR200 receiver
Starlock anyone ?
Start Here; The dipole
Start Here; The dipole;postscript
Start Here; The dipole;postscript - final final
Static Discharge & Lightning Protection
Static drain on antennas
Static (I think) build up on meter glass causing problems.
Static precautions
Station on 1341 kHz tonight ?
Std phonetic or adapted???
Steel scaffolding
Steel Shelving - the earthing there of.
Sticky stuff ?
Sticky tape
Still on the component hunt.
3.533MHz Still there...
Stornophone6000
Strange (data?) signals on 160 metres
Strange diode?
Strange noise waveform
Strange noises on 10 m
Strange repeater on 10MHz
Strange signal on 10.0000MHz USB
Strategic Review of UHF Spectrum at 420-470 MHz
Street Electrical Power / protection
Stubs conundrum
Studies into the operation of the OFC Dipole
SUBJECT HEADING WAS Radcom Plus
subject line
subject matter soldering and fitting plugs.
Subject: vertical HF antennas:
SUBJECT??? was Droitwich Valves
Sudden HF noise floor rise
Visible Sunspots
Sunday 2m Activity
Sunspot Count for June 2013
Sunspot Count for April 2013
Sunspot Count for April 2013
Sunspot Count for December 2012
Sunspot Count for February 2013
Sunspot Count for January 2013
Sunspot Count for July
Sunspot Count for June 2013
Sunspot Count for June 2013
Sunspot Count for March 2013
Sunspot Count for March 2013
Sunspot Count for November 2012
Sunspot Count for October 2012
Sunspot Count for September 2012
Sunspot Data
Sunspot Numbers for February
Superbat (China) connectors for 1/4inch FHJ1-50 coax
Supercaps
Supplier of bonding straps needed
Supplier of laptop batteries?
supplier of RG59 coax cable
Supplier of wire with "tracer" colours?
TRANSFORMER SUPPLIERS
Suppliers of Alu. Tube for Antenna
Suppression Filter No.72A
Surface mount technology
Surface Wave Communication
Surprisingly Accurate Digital LC Meter, lost code
Suspicious ADF4351 Devices - may be fakes
Switch Mode PSU for powering (small) valve type projects
Switch mode PSUs - RadCom Jan 2017
Switched capacitor filters
Switching 50W at HF: relay or other method?
Switchmode inductors/transformers [was QRM DF Antenna}
SWR explained
SWR increase's with power increase
swr meter modification
SWR Problem
SWR Query
SX 24 Oscillator problem
Symbols, Signals and Noise
SYMMETRICOM UCCM GPS 10MHz Frequency/ Time Receiver OCXO
SYMTRIK 60KHz time receivers
Synchronous motor wanted
Synthesized signal generator drawings
T/R 61-01
T200-40 Micrometals Iron Powder Toroid
TAB ATTENUATORS
Take a look at my photos on Facebook
Taking stock -- two milestones passed
Tank coils
Tapping copper
Targus docking port driver software needed.
Tax on Korean imports?
TC-12 12 ohm coax
TC74LCX125F(F) (x125f 16v)
Teaching and Learning (Was Higher impedance coax)
Teaser Puzzle
Tech Group Guidelines
Technical Abbreviations -was Dielectric Properties of FR4 Substrate
Technical Advice Sought on Class A Amp Design
Technical content
Technical explanation required
Technical Handbook for Radio Monitoring
just a quick question: technical links
Technical Topics Scrapbook - All 50 Years!
Telephone Cable
Telephony Earths
Teleprinter 444
Telescopic Mast Accessories
Telescopic Mast.. AGAIN!
Telescopic Mast Design
Telescoping aluminium
Telnet client for DXCluster access
terminal program for Kam
Terminating diode mixers
Terminating diode mixers [was Technical Advice Sought on Class A Amp Design]
Terrestrial Frequency Standard source
Mains plug socket tester
test equipment
test equipment - RADIO-KITS HF SDR Receiver & Panadapter KIT
Ignore this test message
Test versus working voltage for oil filled capacitor
Testing 70cm Yagis
Testing a Trap Yagi
Testing Splitters
Tetra going to 4g was ( Fitting transceivers to modern cars)
Texas device TP0401N
Text Formatting
Thandar TG102 Function Generator
Merry Christmas and thank you
coupling capacitor shafts - Thanks
Thanks Everyone
The 30m Band Utilization Chart -- 2 June 2011
The audio chain in receivers
the bazooka match
The dangers of amateur radio
The Generation of VLF Emissions by Meteors
The German Ofcom
The GW3YDX Super Moxon article?
The HF rx mixer
The impedance transforming CHOKE balun
The Internet of Things, around 4m
The loaded-Q thought experiment (was Smith/L-network)
The Marshall Amplifier
The Minicircuits 50:200ohms xformer
The Moibus/Smith Chart
The most bizarre 80m band antenna ever?
the negative impedance item
The New dream house
The new face of Amateur Radio...OFCOM budget
The new face of Amateur Radio...3cms
The new face of Amateur Radio...OFCOM budget
The new face of Amateur Radio RACAL SCORE
The new-look TS-590 Family Resources Page is now up and running
The omni-directional Halo
The performance of small tuned loops
The pirates
the problems with no licence fee.
The Radio Club liability issues again!
The (Radio) Internet of Things
The real G3PLX Clicklock technique
The reasons for 5V logic is....?
The SI570
The TS-590 Family Resources Page has moved
The ultimate TVI
Theory to solve a practical antenna problem.
Passive thermostatic vent?
Thicker PCB available?
This Group - activity
This sdr rx looks interesting
Thread-forming taps in copper heat spreaders - results
threads, subject changed
Threads - the metal kind this time
Three weeks today and tomorrow: TS-990S in the UK
Throat MIc for mobile use?
Through hole devices
Thrust Bearings
Thunderbird email
Thurlby Thandar Spectrum Analyser Adapter
Demonstrating audibility of weak signals - utilty to play with.
Tilt & swivel vice, �5.99 @ Aldi on Sunday
Tilt & swivel vice, £5.99 @ A ldi on Sunday
Tilt & swivel vice, £5.99 @ Aldi on Sunday
Tim Peake talks about Amateur Radio on the ISS
More Connection issues FPC/FFC this time
Time source, re-sent attachment
TL783 Current Boost
TL783 high voltage regulator
TNS and TN-C-S and TT Explained (Warning Diagram Heavy)
TN-C-S Earths (PME/PNB)
TNS and TN-C-S and TT Explained (Warning Diagram Heavy)
To Transvert or Not to Transvert
To TS-590SG Owners: An Appeal for Help
Today's eclipse
Tohiba 2SC2652 RF Transistor
Tones on 6m
Tonna aerial boom unusual size. Can't find clamps to fit.
Tono 2M-130G
Too reliant on GPS?
Topband Vertical Antenna efficiency
toroid core information
Toroid Sources
Toroidal Cores: Best way to wind them?
Toshiba NPN 2SC2879, MRF421, MRF1487
Tower Detune
Tower Ropes
Track communications OT
Tracking generator for spectrum analyser
Tracking in remote locations
Traditional Self-oscillating Push-Pull inverters
Transceiver If subsystem
Transceiver Separation
Transceiver Switching
Transfering Cbub Callsign
Transformer Oil
Transformer Rating versus Actual Weight
Transformer Rewind
TRANSFORMER SUPPLIERS
Transistor based mixer
Transistor testers
transmission line questions
TRANSMISSION LINE TRANSFORMER - POWER
Transmit Phase Noise - Can it be reduced?
transmitted power ..
Transmitters and All - A Bit of History
Transmitting on 136 and 470.
Transponder Systems in motor racing
transverter for kenwood
Transverter Kit
Transverter Switching
Transverters-Store 144/28 MHz Transverter
Trap dipole - Trap resonance
Trap frequencies [was A3s]
Arrival angles [was Trapped Antennas]
Silicone spray on aerial traps - Finale
Trask style balun - was biconical aerial matching
Tree absorption
Trees and aerials
Trees and HF verticals
Trees as antennas?
Trend plc heating controller with valvemotor TAC RFI (EMC)
TRIAC Failure
triband (6/2/70cm)
Tricks and gadgets
Trimble OCXO info?
Trio/Kenwood TR9000
Triple diffused Power transistors
Tripod for Satellite Antenna
TRW PT4555
Trying to install com0com under Windows 8/64
Trying to use a 250Gb HDD.
Trying to use an Adafruit si5350 dds with a Digispark board. [1 Attachment]
TS-590GS Whitepaper: Software Incompatibilities with the TS-590S
TS-590S Hint of the Week: Extending the PF Key functionality
TS-590S HOWTO: Remote Operation (with a twist)
TS-590S Resources Page: NEW SECTION ON AMPLIFIERS
TS-590S Resources Page -- yet another 2 HOWTOs
TS-830M
TS-940 service manual
TS 950 SDX Problem
TS-990S hands-on: user photos
TS-990S Instruction Manual now available
TS-990S Questions for Kenwood
TS-990S Resources Page: New section
TS-990S Resources Page: Very first "Hint of the Week"
TS-990S: UK Retail price and Brochure
TS2000 and Sequencing
TS2000 ext-conn
TS50-wanted
TT11 data
TT11 Valve Data found quite a bit aboiut the valve & a Data sheet with Curves
TTi PSA1301T random turn on
TTI TF960 Frequency Counter opinions?
Tuned trap activator
Tuner Receiver/ R820T+8232
Tuning a BandPass Filter
Tuning the 60m band
Tunnel diodes
TV 12V PSU HAVOC - Follow Up
TV 12V PSU HAVOC - Follow Up
TV aerial Moan
TV detector vans - was A 'Loony' Idea?
tv qrm
TV Radar Drama Next Week
TV Radar Drama Next Week
TV Standard Converter
TV Zapper Restored
Smart Meters (was Interesting TVI case)
TVI filter
TVI to SKY Digital
Twinlead Supplier
Twisted Open Wire line - wrong Zo
Two Radios one Antenna system....
Two Tales
Two Verticals One Radial Field
TX power
TX Power Levels
Tx/Rx relay switch
UBLOX LEA-M8F GPS chip and Galileo
UHF and/or PL259 Plug or Socket SK259
UHF and/or PL259 Plug or Socket SO239
UHF Compendium
UHF SWR Meter.
UK 44.x.x.x address allocation?
UK 5 MHz Memory Channels
UK 5MHz memorychannels
[uk_beacons] VHF bands Polarization
UK Call Info
UK CEPT 1 operating CW in France
[uk-hf-contesting] G100 RSGB .. typo
UK licensing options abroad
UK Propagation charts for August 2011
[uk-vhf-contesting] Cheap relays for rf switching.
[uk-vhf-contesting] Fw: sd2931 failure
[uk-vhf-contesting] Hyundai inverter generators?
ULF / LF
ULF / VLF Antennas
Ultra Wide Band
Ultraflex 10/ Westflex 103
Un Un 9:1 -- Link to Eham article All Toroids Are Not Equal
Un Un 9:1 -- Link to Eham article All Torids Are Not Equal
Un Un 9:1 -- Link to Eham article All Toroids Are Not Equal
Understanding LF and HF Propagation ebook
Understanding noisy / garbled audio
UNF connectors
UNF connectors(PL259/SO239)
Unformatted replies was short 80m vertical
Uni-Trend Multimeter UT-70B
Unidentified Howes kit
Unidentified SMD
Uninterruptible power system
Metric units
Units : I bet you didn't want to know this !
(unknown)
FW: unknown coax cables - PTFE
FW: unknown coax cables - PTFE
Unknown Cushcraft antenna. Info needed.
Unlikely problem
unsubscribing with immediate effect
UnUn experiments - web page
unusual clock module data wanted
Upper lower case in Mil. Comms MORSE RULES OK
Upper lower case in Mil. Comms MORSE RULES OK
UPS NEEDED
Upsidedown J-Pole!
Urban earth
USA digital breakthrough
USAF wants to set off plasma bombs in the sky
USB chargers
USB device running with its own 5 v psu - will pc talk to it ?
USB Hub
USB- Is a 'hub' needed?
HF bands & USB/LSB
USB Peripherals - a warning
USB Scopes
USB: Sound & RS232
USB Sound card/dongle/ audio adaptor
USB Soundcards & SDR Receivers
Fw: USB thermometers anyone?
USB to 25 pin db25?
USB to COM PORT adaptors?.
USB to RS232 serial adaptors
USB to RS232 under Windows 8
USB-to-serial adapters -- how to choose
USB to Serial Port adaptors
USB to Serial port converters
USB versus RS232 RF protection
Use of a 7Ah SLA in a vehicle to power a radio
Use of a 7Ah SLA in a vehicle to power a radio & charging
Use of a club call sign
Use of Analogue Repeaters
Use of Garmin Oregon 650 GPS with OS maps
Use of Polydimethylsiloxane (PDMS) silicone oil as a dielectric
Use of Polydimethylsiloxane (PDMS) silicone oil as a dielectric in a variable capacitor.
Use of Power SDR software with Anan SDR
Use of this Orem.
Useful device for SSPA protection ect
useful/less meter?
Useful Meter
useful publication
Useful Reference lin RADIO_ELECTRONICS-COM
useful tutorial on modulation
useful website
Using DC switching relays for VHF coaxial switching
Using QRO Telco 48V PSUs
Using SSB Electronics Sequencer DCW 2004
Using the Raspberry Pi as an FM transmitter
UV Light
UV-Weatherproofing
V-bolts or U-bolts
Vactrol
Vacuum pump fittings - DN 25 ISO-KF
Vaintage Wood & Douglas modules.
valve books
Valve characteristics - probably a vain hope
TT11 Valve Data found quite a bit aboiut the valve & a Data sheet with Curves
VALVE P A FOR 70 MHz BAND
Valve Power Supply
Valve QRP photos
Valve receievr design
What would have happened (was Valve receiver design)
Valve swap? A GS35B in place of GS31B
Vann Draper
Variable Cap Working Voltage
various G5RV confgurations and affects on 20m
Vaseline for sealing connectors
VB6 Support - sorted
VB6 Support - sorted
VCXO wanted
VDSL Interference
VDSL Investigation
VDSL Line
VDSL notch filters - ex Coming to the end of my tether
VDSL notching of Amateur bands
VDSL QRM monitoring.
VDSL Survey
VDSL2 RF emissions and immunity
Vehicle Installation...
veiw of groups digest
Verbosity?
Strumech Versatower P30/BP30
versatower post
Versatower/Structural engineer Q
Very old, school UNILAB oscilloscope info wanted
very short HF mobile antenna
VHF (2m) Band Pass Filter Question
VHF Allocations for IoT
VHF ANTENNA
VHF bands Polarization
VHF bands - Why is Horizontal polarisation preferred for DX chasing ?
VHF cavities
VHF Comms
VHF Communications
VHF Field Strength measurements
VHF Filter design
VHF Helical filters
VHF Noise
VHF Pagers- Source?
vhf path maps
VHF Power Amplifier.
VHF Preamp performance
VHF/UHF 300W Dummy Load Design
VHF / UHF Anyone ?
VHF/UHF base rigs - RF performance
VHF/UHF base rigs - RF performance
vhf/uhf diplexer
VHF/UHF DX Book [was: lfa,owl,owa]
VHF/UHF Polarisation
VHF / UHF Stacking Distances.
VHF/UHF transverters
FW: [VHFandUHF] Display of Email addresses changed in Yahoo groups
Vias on home-produced PCBs
Video processing question
Videos: ARISS UK and Nayif-1 Clean Room + Uni Birmingham and Malta satellite
Viesmann boiler
Vintage Audio Amp
Vintage Tech anyone??
Virgin Media "Superhub" HF noise
Viscous Coupling Unit
visiting uk
Visual Basic 6 on 64 bit machines
Visual Studio 6 Installion on Win 7
Visyal Studio 6 Installion on WIn 7
VK2ABQ beam in August 2016 RadCom
VK5JST Aerial Analyser
VLF Receive Set up.
VNA
'Voice Keyer 1.7
Voltage multiplier
Voltage reference stability
Voltage referene stability
Voltage regulation for generator
Voltage Regulator Conundrum
Voltmeter Valve No 3
Volts / metre limits for CAN bus
Volunteer badge
Volvo XC60 Radio Fit
VSPE for Windows 10?
VSWR calculation - postscript.
VSWR calculation. Enough!
VSWR calculation - postscript.
w2fla/kq2h 10m repeater on echolink number 146625
W3NQN filter
W4HDX Zepp EZNEC antenna model query
Wago connectors
Wall warts [was HF RFI]
Wallwart QRM
unusual clock module data wanted
Wanted Eagle cad Toko.lbr
Wanted! Ham engineers for Vhf radio equipment design and testing in Croydon.
Wanted IC202S power cord plug
Wanted - plug-N-play DSPic Hilbert Transformer
Wanted service manual for HP 1801A series of Oscilloscope plugins
wanted / source two barrel dispenser gun for araldite
Wanted: The first issue of Technical Topics
Warning - Revex P300 13.8v DC PSU
Warning BT Users
Warning, cheap 1/4" jack plugs - avoid
Warning - Chinese PL259/SO239 connectors
Warning on USB leads
[was 5wire transmission line] back to Faraday Sheilds
Was: COMPUTER SECURITY
Smart Meters (was Interesting TVI case)
was licence numbers
was ~MSF 60KHz - current status ?
[Bulk] Was Normameter R1now unseen own posts
Was radioactive element - now x-ray treatments.
Was TX power Now Low Power FT 101ZD
Was- VHF Communications
(wasPOTS) computer measurement.
Waterproof Cabinet
Waterproof enclosures
Waterproof Plugs & Sockets
Waterproofing Yagi Feedpoints
Watson Co linear aerial
Watson W30AM Power Supply
Watson W30AM PSU --- another Switch mode PSU experience.
Watson W30AM PSU --- another Switch mode PSU experience.
WATSON W40-SMV Digital Power Supply
Wavelength: The Long and the Short of It?
Wavox Capacity Aerial
Wayne-Kerr VHF Admittance Bridge
Weak digital signal recovery breakthrough
Weak signal article in Dubus
Northwood HF Weather Fax Broadcasts
Weather stations
WEB based Maidenhead Square Locator calculator
Web page down?
Webpage hits
DMR decoding and IK8XOO webSDR rx
Websites with examples of QRM?
Webswitch
Weller Soldering iron misbehaving
Weller soldering irons bit codes
Weller tip codes
Welz SP-300 Swr/Power Meter alignment.
Westflex 103 connectors
What a Beast!
What's permitted?
What's this?
What's wrong with "Transformer"?
What are these called please?
What are these connectors ? (Like oversized BNC)
What are these connectors ? (Like oversized BNC)
What could this signal be?
What depends on GPS?
What do these do?
what does '&# 39; Mean
What Ham Satelites can be used in the UK on 2M & 70cm
What has happened to this group ?
What if...
What is a 10AE/219?
What is FOC
What is the best sequence for tuning a 3 ele Yagi?
What is the British equivalent of the US Extra Class License?
What is the R-Pi frequency generation ?
What to talk about [was: Dummy load coolant recommendation]
What would have happened (was Valve receiver design)
Whats happening on the new 146 MHz - 147 MHz band
Whats this ?
When did UK Amateurs lose 1800-1810 KHz?
which balun to use for 20 meter delta loop antenna
which balun to use for 20 meter delta loop antenna
Which CPU for Amateur Use
Which HF Antenna?
Which Microwave Books?
Which remote tuner for doublet?
Whilst on 2m.....
Whip trimming (was Half Size G5RV Construction)
White LEDs
White Rose Radio
Who has Vibroplex for Sale in the UK?
Who is calling whom?
Who is calling whom?
Why 408MHz for radio astronomy
Why are capacitors of 1000 uF or more still stated in uF, and not mF ?
Why do we feel obliged to use black box transceivers.
Why does my processor speed vary?
Why does RadCom no longer have the date of publication on the fr
Why does RadCom no longer have the date of publication on the front cover?
Why Met Police were on VHF Broadcast Band
Wideband lf noise.
Wideband Replay / demod Facility in SDR Software
Wideband RF transformer with DC isolation
Widening FT-450D TX audio bandwidth?
WiFi capability query
WiFi enabled SD cards
WiFi enabled SDHC cards
WiFi not connecting until 2nd boot
wilkinson Coupler
Will the melting of Artic ice change propagation paths?
Win XP RasPi and Software !
Win7 Soundcard driver question
Windom Antennas
Windom article - Radcom June
Window-mount 2m/70cm antenna design
Windows 10 Update process
Windows 7, 64Bit & MS DOS
Windows/7 Audio Scope and Sig Gen
Windows 7 test program request
Sound Card problems in Windows 8.1
Windows 8 serial ports - working fine now
WINDOWS7 to 10
Wing tip vortex reflection?
Looking for a audio speach processor design in practical wireless about 1976-1979
Post Office Splice was badly made wire antennas.
Wireless doorbell
Wireless Headphones
Wireless headset - thanks all
Wireless Nights
Wireless thermometers?
Wirewound resistor problem
Wiring regs.
Wirless Mouse
Wobbly noises on 10m
Wooden mast to support an inverted "L" antenna
working with household mains.
Workshop Practice & Cabling
worries about rf station earthing
Worrying or crazy?
Would this work - FETs as varactors
Wouxon battery
Wouxon KG-UVD1P Battery Discharge
Wouxun KG-UV1P Programming Woes
Wouxun KG-UVD1P Programming
Wrecking UTC
What's wrong with "Transformer"?
WSJT modes?
WSJT-X & JT65
WSJT-X and Windows 10
( WSPR on 2m?) Beacon Modulations
WSPR antenna comparisons
WSPR beacon unwanted emissions
WSPR Homebrew TXRX
( WSPR on 2m?) Beacon Modulations
( WSPR on 2m?) Beacon Modulations
WSPR on 2m? (Beacons & propagation)
WSPR signal
WSPR Tone accuracy
WSPR tx
WSPR tx [ ref. Colin Chidgey G3YHV 18-May-17 8:58 AM ]
WSPRry Pi RF Spectrum
WTB/Swap or scrounge
Wythall Radio Rally 21st March near Birmingham
Moderator X-Rays & Engineers or Ingeneers (was X-Rays) Threads
X10 System
XBox audio
Xpol antenna designs for 2m??
Xpol Yagis
XR2206 function generator
XV432 The Conclusion
XV432 Transverter
Yaesu 7800 on 2/70
YAESU FL2100 AMP.
Yaesu FP-21 PSU - info needed
YAESU FT 1000 MP
Yaesu FT-1000MP CAT port fault.
Yaesu FT-280 can anybody help
yaesu ft 290r
Yaesu FT-450 CAT control
Yaesu FT-8100R individual memory deletion
Yaesu Ft-991 review
Yaesu Ft-991 in reality HHF100RD's
Yaesu Ft-991 in reality HHF100RD's
Yaesu Ft-991 review
Yaesu FT101ZD MkII realignment
Yaesu FT290R RX audio problem
Yaesu FT290R RX audio problem - SOLVED ! ! ! !
Yaesu FT707 xtals
Yaesu FT817 - A warning
yaesu ft897 speech processor
Yaesu ft897d
yaesu ft950 audio settings
Yaesu G-450C/650C rotator controller variable speed drive [1 Attachment]
Yaesu G1000DXC rotator problem
Yaesu G450-C rotator
Yaesu manual and dBµV
Yaesu rotator repair
Yaesu SCU-17 Audio Interface
Yagi antenna design.
Yagi confusion
Yagi design
Yahoo for Dummies Thread
Yahoo for Dummies Thread
Yahoo Groups and Web Browsers
Yahoo Groups issues
Yahoo madness.
Yahoo problems
Yeasu/kenpro rotator casing
Yeasu Rotators
Yeasu vision of digital
Yesterday's Independent
Yet another apparently lost post
Yet more WEB SDR's
You never saw so many common mode chokes
Youkits Antenna Analyser FG-01
Your Starter for 10
YouView "...using ringmain to get around the home"
Z shaped Doublet
Zapping lead acid Cells
Zapping NiMH Cells
Zener relation ship to T2 BC547
ZeroAccess removal
ZL Specials
ZLPLL ADF4351 synth boards - MMIC boosters
ZTX327
ZTX327 equivalent for Datong AD370 active antenna.
ZTX327 equivalent for Datong AD370 active antenna.