[Elecraft] Audio Volume

[Margaret Leber]

W3FPR - Don Wilhelm wrote:

> In my quick reply earlier, I failed to mention the AGC setting - even if it
> is set for the manual recommendation of 3.8 volts, it may be too high and
> hold the gain down.  Test by turning the AGC off and on with no signals on
> the band (if band noise is present, disconnect the antenna), and make
> certain the DSP de-noiser is not running.  If you hear a change in the noise
> level, the AGC Threshold is set too high. 

Imagine my surprise in discovering that later K2s have an adjustable AGC 
threshold. ;-) *My* control board R1 is a 51K ohm fixed resistor ;-)

For those following the saga of K2 1641, it's pretty much completely in 
operation. I need to retweak the 20m BPF a bit, but otherwise it's 
rockin' out. Doing Don's AGC on/off test above might give an 
almost-perceptible change in noise level, I'm not sure. Doesn't seem 
like an issue.

It works better than my CW does, anyway....gotta work on that.

Now I have the battery and SSB mods to work on. We'll see how well the 
battery has weathered several years storage; it may well need to be 
replaced.

73 de Maggie K3XS

-- 
-----/___.   _)Margaret Stephanie Leber CCP, SCJP/"The art of progress /
----/(, /|  /| http://voicenet.com/~maggie SCWCD/ is to preserve order/
---/   / | / |  _   _   _    `  _  AOPA 925383/ amid change and to  /
--/ ) /  |/  |_(_(_(_/_(_/__(__(/_      K3XS / preserve change amid/
-/ (_/   '        .-/ .-/        ARRL 39280 /order."-A.N.Whitehead/
/________________(_/_(_/_______AMSAT 32844_/<maggie at voicenet.com>/