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Re: [TenTec] Omni6/Omni6+ AGC pop on cw leading edge

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] Omni6/Omni6+ AGC pop on cw leading edge
From: Clayton Brantley <clayton_n4ev@yahoo.com>
Reply-to: Clayton Brantley <clayton_n4ev@yahoo.com>, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sun, 11 Dec 2011 13:26:51 -0800 (PST)
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
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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