Re: Re[4]: [multipsk] Re: Test of RX DGPS mode and colorization of Multipsk


May 5, 2008

 


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#5069 May 5, 2008

Hello Patrick,

> Hello Michael,

> .

> Sorry for my ignorance, but what means "NDB" in. "The European

> NDB Handbook" "The North American NDB Handbook" ?



No need to apologize :-)



NDB are nondirectional beacons that are used for aeronautical and

maritime navigation purposes. Actually in recent year the maritime

NDBs have been phased out in favor of DGPS beacons.



A good explanation is given at:

en.wikipedia.org/wiki/Non-directional_beacon



Regarding 200 Bd decoding I tried on 304.5 kHz earlier this evening

for the Lithuanian DGPS station near Klaipeda - with the results

below:





05/05/08 19:31:33

Message type : 9 (GPS partial correction set)

Station number : 535

Z-count : 3175 ( 31 mn 45.0 s )

Sequence count : 6

Number of words : 5

Health : 0 (UDRE scale factor=1.0)

Sat. ID SF UDRE Pseudorange corr. Range rate corr. IOD CRC

13 0 4-8m 5296.32 m 0.032 m/s 33 Error

17 0 =1m -75.84 m -0.064 m/s 15 Error

15 0 =1m -323.52 m 0.000 m/s 94 Error







--

vy 73 + gd DX,



Michael



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#5073 May 6, 2008

Hello Micha.l and Chris, TKS for reports. It works but I must justdecrease the number of errors. RR for NDB. Good paper of Wikipedia. 73Patrick   ----- Original Message -----From:MichaelOexnerTo: multipsk@yahoogroups.comSent: Monday, May 05, 2008 11:15 PMSubject: Re[4]: [multipsk] Re: Test of RXDGPS mode and colorization of Multipsk

Hello Patrick,

> Hello Michael,>  > Sorry formy ignorance, but what means "NDB" in  "The European> NDBHandbook" "The North American NDB Handbook" ?

No need to apologize:-)

NDB are nondirectional beacons that are used for aeronauticalandmaritime navigation purposes. Actually in recent year themaritimeNDBs have been phased out in favor of DGPS beacons.

A goodexplanation is given at:en.wikipedia .org/wiki/ Non-directional_ beacon

Regarding200 Bd decoding I tried on 304.5 kHz earlier this eveningfor theLithuanian DGPS station near Klaipeda - with theresultsbelow:

05/05/08 19:31:33Message type : 9 (GPS partialcorrection set)Station number : 535Z-count : 3175 ( 31 mn 45.0 s)Sequence count : 6Number of words : 5Health : 0 (UDRE scalefactor=1.0)Sat. ID SF UDRE Pseudorange corr. Range rate corr. IODCRC13 0 4-8m 5296.32 m 0.032 m/s 33 Error17 0 =1m -75.84 m -0.064m/s 15 Error15 0 =1m -323.52 m 0.000 m/s 94 Error

-- vy 73+ gdDX,

Michael


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