Maybe Joel, but I did have it with my Corsair II and with my previous three
OMNI's (all with audio derived AGC). It isn't as apparent when the band is
not full of strong signals, but in a contest it is there. As Steve said, a
slight reduction of the RF gain helps.
73
Rick
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of joel hallas
Sent: Monday, November 29, 2004 3:41 PM
To: tentec@contesting.com
Subject: Re: [TenTec] Corsair II ALC issue
My Corsair I didn't have that problem in full or semi-QSK.
GL, Joel, W1ZR
Steve N4LQ wrote:
> 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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>>
>
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