[Elecraft] [K3] AGC-OFF
Wayne Burdick
n6kr at elecraft.com
Tue Jun 21 13:24:04 EDT 2011
Kevin,
This is a case where you might want to try CONFIG:AGC DCY = SOFT and/
or a nonzero value of AGC HLD. Either could help eliminate the need to
ride the RF gain control, whether you run it at full clockwise or not.
73,
Wayne
N6KR
On Jun 21, 2011, at 10:12 AM, Kevin Rock wrote:
>
> I was having a hard time making out characters today during my daily
> sked
> into the Southeast. The QSB was a fast flutter and was chopping up
> the
> letters badly. I was running fast AGC and thought maybe slowing it
> down
> may help. It did - a little. So I took the next logical step and
> turn
> AGC off entirely. The characters popped right out at me. I just
> rode the
> RF gain as the signal went through its slower QSB while the fast
> flutter
> QSB did little to bother me. AF gain was cranked to high as I
> normally
> run it while RF gain was set to where the background QRN was
> minimized.
> Turning off the AGC helped eliminate the fast flutter problems which
> were
> causing me difficulties copying.
>
> This is most likely old news to many of you but I have been running AF
> gain at max and controlling volume with the RF (or IF) gain since 1960
> when I first started SWLing on my brother's Lafayette receiver.
>
> I hope this helps at least one of you drag out a new one.
> 73,
> Kevin. KD5ONS
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