Hi Don.
Thanks for the info.
According to the schematic in the TT manual, the BFO is fed from the REG+
8.5v line. None of the other xtal oscillators appear to influence the TX
frequency at all, except the BFO... tested with the "wet finger" quick and
dirty method.
I haven't looked in the PLL compartment, as the RX frequency stability is
excellent, and cannot imagine why the problem would only show up in TX if
the PLL reference was wandering.
I am CC'ing all my responses to the list as well, just in case someone finds
this interesting.
Another query:
On my Omni, there are 2 holes just below the TX audio / BFO board where the
presets and audio in/out sockets are etc. The paintwork on the back panel
indicates that screws were once there.
Are there screws in this position on your Omni V?
I believe the screws mate with a mounting flange on the TX audio / BFO
board.
Paul MW0CDO in spring-like sunny Port Talbot.
----- Original Message -----
From: <VE1BN@aol.com>
To: <gw7lhi@hotmail.com>
Sent: Friday, March 29, 2002 6:20 PM
Subject: Re: [TenTec] RE: Omni V Fm'ing
> Hello Paul -
>
> Congrats on getting closer to getting the frequency stability of your OMNI
V
> under control. Molex power connectors do become loosened through fatique.
>
> One thing I noticed though, you say you have regulated +8.5 volts on the
> crystal oscillators. I find that curious, as my OMNI 6+ has +13.5V on the
> oscillators. Perhaps the "V" should, too? Do you think perhaps the lower
> voltage may be affecting the oscillator stability? Just a thought, and
> something to look at?
>
> I don't believe the crystal oscillator boards are different in the OMNI V,
VI
> or VI+.
>
> My Paragon has regulated +13.5V on its oscillators, crystal or otherwise,
and
> as you may know, this rig is synthesized. No sign of frequency change
from
> low to high power output either.
>
> If you solve your FM'ing problem, please pass your findings on? Others may
> have need of your results in the future.
>
> 73 and best of luck -
>
> Don, veibn@aol.com
>
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