Lyle,

Thank you for your prompt response.



Slow agc or fast agc or CW is not the point. The problem holds for SSB
contesting as well.
Nor is it about band conditions.

It IS about working a S4 station in a contest after a S9+20 station. QSO
responses are quick and so is going from one QSO to another. I missed
the first letters of a weak station several beacause of too slow agc,
and had to ask for a repeat.


All I ask is that the AGC backs off and starts all over again when going
to receive after a transmission.
With all that DSP stuff that must be possible. I have confidence that,
after implementing this, the K3 will not bang my ears every time. You'll
find a way to avoid that. 
Maybe the solution is in a temporary fast response of the AGC so that
the AGC can drop down to a low S3 level in 100 ms or so, and then engage
the AGC setting again as set by the operator.  This could be analog
thinking so there probably is a more clever and simple way in DSP. 

As for modifications to the K3 SW, I think that (in my opinion....
sorry) this is a more important issue that a beeping response when I
press a button on the K3.


73
Arie PA3A



-----Oorspronkelijk bericht-----
Van: Lyle Johnson [mailto:[EMAIL PROTECTED] 
Verzonden: maandag 1 december 2008 3:15
Aan: Arie Kleingeld PA3A
CC: [email protected]; [EMAIL PROTECTED]; 'Ad van Ginneken'
Onderwerp: Re: [Elecraft] K3 RX AGC right after a transmission


Hello Arie!

> ... We SUSPECT that the AGC was still at the level from BEFORE the 
> transmission.

Yes, AGC is suspended during transmission, then resumes during receive. 
  The assumption is that the band hasn't changed that much in the 
milliseconds (CW QSK) to several seconds (SSB voice).

> ...the work around was setting the AGC to fast.

In general, fast AGC is most often used for CW< and slow AGC for voice 
or data operation.

73,

Lyle KK7P


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