[TenTec] Corsair II ALC issue

[Steve N4LQ]

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 at us.schneider-electric.com>
To: <tentec at 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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