Posted by Rich Piehl on 11/18/06 04:29
Check your email in box...
God bless the USA
> OK RIch, I did an experiment, and the problem appears to be the LNBF
> being slightly off frequency. It is a DMS Internationational ASC321-2
> that I bought when I got my first setup a few years ago.
> Anyway, I have a brand new Pansat 2700 so used that receiver to try to
> tune in same transponder on IA-7, White Springs TV. I had it tuned in
> on the Satwork receiver, then shut everything off, removed the IF
> cable and hooked it to the Pansat, so dish was pointed right at IA-7.
> Well, got exactly the same results. If you put in11989 as shown in
> Lyngsat, or 11987 as shown on White Springs TV site, you will get
> nothing, even if you do a scan on the Pansat (however, if you do a
> scan on the Satwork it would find it at the lower frequency). Anyway,
> I had to keep lowering frequency of the transponder until it got to
> 11984 Mhz and BANG, there it was, excellent signal. SO, I drew the
> conclusion that it must be the LNBF that is off about 4 or 5 mhz.
> FYI; the video is slightly better on the Pansat, but not much, video
> is still only what I would call fair, but the video contrast seems to
> be better and not so extreme as with the Satwork. However, get this,
> Satwork provides EXCELLENT pictures on all the other satellites and
> transponders, even after these several years of running 24 hours per
> day. I also have a Pansat 2500 and would say the video is just as
> good on the Satwork.
> I'm thinking of upgrading the LNBF to a lower noise figure and perhaps
> one that is more stable, thinking of the Invacom, what do you think?
> Anyway, mystery solved I think... he he..
> On Wed, 15 Nov 2006 20:50:15 -0600, Rich Piehl
> <rpiehl5REMOVETHIS@FORNOSPAMcharter.net> wrote:
>>>Do you think that if the LNB drifted off frequency it could
>>>cause this low reading? I'm not sure if it has it's own oscillator
>>>inside or it is a phase locked loop.
>>>What I need to do is a blind scan with say Pansat or other
>>>receiver and see what happens.
>>If it was your LNB it would be consistently low for DVB, for
>>analog...all of it.
>>Even non-PLL LNB's can be pretty stable if they were designed to be. If
>>it's an older one designed and installed before digital satellite came
>>in vogue it may not be that stable.
>>God bless the USA
Freedom requires work and sacrifice. Tyranny you can have by doing nothing.
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