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Re: [TenTec] Corsair II ALC issue

To: <tentec@contesting.com>
Subject: Re: [TenTec] Corsair II ALC issue
From: "Steve N4LQ" <n4lq@iglou.com>
Reply-to: tentec@contesting.com
Date: Mon, 29 Nov 2004 18:28:09 -0500
List-post: <mailto:tentec@contesting.com>
Does going to the "slow qsk" mode help? I think you are experiencing the typical audio derived agc syndrome. When coming off mute, the rx gain is at max since the agc hasn't had time to react to the ever-present strong signal you referred to. By the time the agc can react, the burst of signal has made it to the af amp and produces the big thump. Under those conditions you options are to use slow qsk or decrease the RF gain accordingly. This behavior is typical of most older TenTec rigs prior to the Paragon.
Steve N4LQ
----- Original Message ----- From: <john.brewer@us.schneider-electric.com>
To: <tentec@contesting.com>
Sent: Monday, November 29, 2004 9:15 AM
Subject: [TenTec] Corsair II ALC issue



Hello,

This weekends CW test proved a great workout for the Corsair II I recently purchased.

One of the issues I noted, was a thump when the rig was transitioning from CW transmit
to receive, in the presence of strong signals. This happened with both ALC settings and
both SSB and CW filter employed.


It sounds like the ALC is too slow to handle the transition from mute to receive.

Is there a mod/workaround for this, or is this situation unique to my rig?

The only other rig I've heard that has this issue, is the Elecraft K1, which does
exactly the same thing, in the same circumstances. (Surprisingly, the K2
does not...I used it on CQWWDX and it performed like a champ, w/100 watts).



Thanks for your insight John K5MO

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