[TenTec] AGC

[Steve Ellington N4LQ]

Well if I had a copy of the Ron-Lee mod I could tell you in a flash. However
unless this mod included a new circuit board, I seriously doubt it. As you
know, the Omni C was advertised as having "hang agc". Even the manual tells
about it and the schematic shows the components used to produce the "hang".
However, this C simply doen't have them, nor are there any empty holes. It's
as if it were a different rig altogether when it comes to agc. So I have a
hangless Omni C and I like it that way.

Here's one for you Omni C owners. Open your manual to page 3-6 and find the
TX Mixer board. Gaze upon this then turn to page3-44. Notice anything
different? Hmmm. Where's T1? It's on the schematic!

N4LQ Steve


>Is it possible that your Omni C has the Ron-Lee AGC mod?
>
>73..de John/K4WJ
>
>At 09:39 PM 1/29/99 -0500, you wrote:
>>
>>
>>>(but I know it is since the notch affects AGC).
>>
>>
>>Well you hit the nail on the head with that last comment. TenTec was able
to
>>obtain good selectivity at a low cost by using audio filters and having
the
>>agc taken off after the audio filter. My Omni-C is of course this way but
>>for some strange reason it's agc is quite smooth and doesn't have that
usual
>>thump when a strong signal hits it. Interestingly, the schematic of the
>>IF/AF board doesn't even come close to what's really there! They must have
>>gone through several mods during production.
>>
>>With the Corsair series I belive they should have taken the agc from ahead
>>of the af amp due to the excellent xtal filters available. Anyway, this
>>didn't happen until the Paragon/Omni-V series.
>>
>>N4LQ
>>
>>
>>
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>
>
>**********************************************
>        John/K4WJ in Pembroke Pines, FL
>     QTH is 26 00 51 N
>                80 16 16 W
>     K8PXG from 18 Jun 59 to 11 Feb 97
>     K8WJ  from 12 Feb 97 to 07 Apr 97
>     ZF2HZ from 17 May 84 to 31 Dec 84
>**********************************************
>
>
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