Re: Troubleshooting help needed


Nov 14, 2008

 


----------------------------

#108 Nov 14, 2008

Just discovered that I can no longer receive my only digital channel

(Medford, Oregon FOX 26-1 and 26-2). I've had it up and running

since mid-summer. I had to install a line amp (Channel Master--30 db

gain) in order to pick it up, and even then I only had about 15%

signal. But it was perfectly watchable on the digital box. Now I

have nohting and 0% signal. So I need some advice where to go now.

This is what I've done/know so far:



* My other UHF *analog* channels on 30, 40 and 45 which also depend

upon the line amp continue to come in fine. This rules out the line

amp from being the culprit (at least in my mind).



* I swapped out my converter box with a brand new one and I still

receive nothing. This rules out the box.



* I checked with my local FOX channel engineer, and he checked and

verified that their local translator is still broadcasting the same

signal and power level they always have. No problems there.



* I checked my house-top antenna alignment, and everything is spot-on

with the same alignment marks I made during my initial alignment.



* Trees in my signal path which were in full foliage last summer when

I aligned everything are now completely devoid of leaves (being late

fall).



Okay, so what am I missing here? What have I overlooked? Any help

or suggestions would be appreciated.



Rob

Grants Pass, Oregon



----------------------------

#109 Nov 14, 2008

--- In TV_Antennas@yahoogroups.com, "Robert Williams" will7370@...>

wrote: >

> Just discovered that I can no longer receive my only digital

channel > (Medford, Oregon FOX 26-1 and 26-2). I've had it up and running

> since mid-summer. I had to install a line amp (Channel Master--30

db > gain) in order to pick it up, and even then I only had about 15%

> signal. But it was perfectly watchable on the digital box. Now I

> have nohting and 0% signal. So I need some advice where to go

now. > This is what I've done/know so far:

>

> * My other UHF *analog* channels on 30, 40 and 45 which also depend

> upon the line amp continue to come in fine. This rules out the

line > amp from being the culprit (at least in my mind).

>

> * I swapped out my converter box with a brand new one and I still

> receive nothing. This rules out the box.

>

> * I checked with my local FOX channel engineer, and he checked and

> verified that their local translator is still broadcasting the same

> signal and power level they always have. No problems there.

>

> * I checked my house-top antenna alignment, and everything is spot-

on > with the same alignment marks I made during my initial alignment.

>

> * Trees in my signal path which were in full foliage last summer

when > I aligned everything are now completely devoid of leaves (being

late > fall).

>

> Okay, so what am I missing here? What have I overlooked? Any help

> or suggestions would be appreciated.

>

> Rob

> Grants Pass, Oregon

>

The only variable seems to be the tree leaves ; they might have been

acting as a reflector. Sounds strange, but is barely possible, maybe

even bending the signal around a trunk or branch. If you can, try

turning the antenna "up" and "down", or slightly to one side and the

other. Leaves deflecting a signal on UHF is pretty common; on analog,

the picture will shake or pulse, but might not be noticed on DTV.

That's the only guess I've got.



----------------------------

#110 Nov 14, 2008

The other thing to check is your cable and connections. If you have

several connections you'll lose some signal that way. Also if your

cable is damaged or bent to tightly you'll lose signal. I'd try a new

cable and go straight from the antenna to the TV. After that add the

amp. 15% is super low. I'd say you were lucky to be able to view

anything. I've seen signal strength move up and down 10 or 20 percent

for no apparent reason.



Dan



--- In TV_Antennas@yahoogroups.com, "Robert Williams" will7370@...>

wrote: >

> Just discovered that I can no longer receive my only digital channel

> (Medford, Oregon FOX 26-1 and 26-2). I've had it up and running

> since mid-summer. I had to install a line amp (Channel Master--30 db

> gain) in order to pick it up, and even then I only had about 15%

> signal. But it was perfectly watchable on the digital box. Now I

> have nohting and 0% signal. So I need some advice where to go now.

> This is what I've done/know so far:

>

> * My other UHF *analog* channels on 30, 40 and 45 which also depend

> upon the line amp continue to come in fine. This rules out the line

> amp from being the culprit (at least in my mind).

>

> * I swapped out my converter box with a brand new one and I still

> receive nothing. This rules out the box.

>

> * I checked with my local FOX channel engineer, and he checked and

> verified that their local translator is still broadcasting the same

> signal and power level they always have. No problems there.

>

> * I checked my house-top antenna alignment, and everything is spot-on

> with the same alignment marks I made during my initial alignment.

>

> * Trees in my signal path which were in full foliage last summer when

> I aligned everything are now completely devoid of leaves (being late

> fall).

>

> Okay, so what am I missing here? What have I overlooked? Any help

> or suggestions would be appreciated.

>

> Rob

> Grants Pass, Oregon

>







----------------------------

#111 Nov 14, 2008

Are any of your neighbors still receiving it? That would indicate whether

you have a problem in your equipment or whether something bigger is going on?



Steve Koons, Dayton, Ohio

**************Get the Moviefone Toolbar. Showtimes, theaters, movie news &

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[Non-text portions of this message have been removed]



----------------------------

#112 Nov 14, 2008

Are any of your neighbors still receiving it? That would indicate whether

>you have a problem in your equipment or whether something bigger is going on?

.

Actually, I'd be highly surprised if anyone.aorund here in the rural countryside.is TV obssesed enough.to invest in a UHF pre-amp (which you have to order online---you can't buy locally) and a second TV antenna solely to receive a single weak digital TV channel.. At least pre-Feb 17th.. Maybe more will come around next spring.

.

I appreciate the suggestions given so far, but now I'm beginning to wonder if my new signal pre-amp might have somehow degraded enough to lose the 15% digital signal I was getting, but not enough to lose the other three analog channels that are still there.. I specifically bought my pre-amp from Channel Master because I assumed they would have a more dependable product than Radio Shack.. The CM pre-amp only gives me 30 dB of gain, which their documentation said would increase my signal 20 times stronger.. Radio Shack does have one that offers 60 dB of gain, which I thought was overkill at the time, but maybe that's what I need to pull that 15% up somewhere higher.

.

Any other ideas, please let me know.

.

Rob KC7BUM

Grants Pass, Oregon

.

.









[Non-text portions of this message have been removed]



----------------------------

#113 Nov 14, 2008

Hi Rob,

It could be that a large metal building or other structure is now

between you and the transmitter site.Relocating your antenna or

raising it may help.

David

>

> >Are any of your neighbors still receiving it? That would indicate

whether > >you have a problem in your equipment or whether something bigger is

going on? > .

> Actually, I'd be highly surprised if anyone.aorund here in the rural

countryside.is TV obssesed enough.to invest in a UHF pre-amp (which

you have to order online---you can't buy locally) and a second TV

antenna solely to receive a single weak digital TV channel.. At least

pre-Feb 17th.. Maybe more will come around next spring. > .

> I appreciate the suggestions given so far, but now I'm beginning to

wonder if my new signal pre-amp might have somehow degraded enough to

lose the 15% digital signal I was getting, but not enough to lose the

other three analog channels that are still there.. I specifically

bought my pre-amp from Channel Master because I assumed they would

have a more dependable product than Radio Shack.. The CM pre-amp only

gives me 30 dB of gain, which their documentation said would increase

my signal 20 times stronger.. Radio Shack does have one that offers 60

dB of gain, which I thought was overkill at the time, but maybe that's

what I need to pull that 15% up somewhere higher. > .

> Any other ideas, please let me know.

> .

> Rob KC7BUM

> Grants Pass, Oregon

> .

> .

>

>

>

>

> [Non-text portions of this message have been removed]

>



----------------------------

#114 Nov 15, 2008

--- In TV_Antennas@yahoogroups.com, "David Lewis" n5sjs@...> wrote: >

> Hi Rob,

> It could be that a large metal building or other structure is now

> between you and the transmitter site.Relocating your antenna or

> raising it may help.

> David

>

Or a structure is now gone. Good thinking, David. Buildings can

certainly alter a signal path.



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