Thanks Clayton, but that is only related to the audio from your
sidetone and T/R switching (and I already have plug 52 disconnected
anyway).
My concern is the AGC circuit itself and the audio pops on the leading
edge of actual received signals.
73, Barry N1EU
On Sun, Dec 11, 2011 at 9:26 PM, Clayton Brantley
<clayton_n4ev@yahoo.com> wrote:
> Barry: The only thing I have found is the note from Paul W9AC dated
> 8/28/2004.
> The text can be found at www.qsl.net/tentec/mods/563key.htm , basically it
> says to
>
> disconnect plug 52 on the if/af board.
>
> I never noticed the problem, but my ear is not that "refined"! HI
>
> 73 Clayton N4EV
>
>
>
> ________________________________
> From: Barry N1EU <barry.n1eu@gmail.com>
> To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
> Sent: Sunday, December 11, 2011 4:00 PM
> Subject: [TenTec] Omni6/Omni6+ AGC pop on cw leading edge
>
> I notice up to a +10dB pop on the leading edge of cw elements with my
> Omni 6+. Please see a recorded waveform at
>
> http://n1eu.com/omni6agc.gif
>
> and the accompanying 20sec recording is at
>
> http://n1eu.com/omni6agc.wav
>
> It's clear that when there's been no signal for a second or so, the
> big 10dB pop is much more likely. Otherwise there's a "little" pop of
> 3-5dB. I'm not seeing much in the archives but has anyone tried to
> tame the "pop" via AGC time constants etc? Can anyone contribute a
> little technical analysis?
>
> I see little difference in the popping with fast vs slow AGC.
>
> Thanks & 73,
> Barry N1EU
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