[Elecraft] K2: AGC Voltage OK?

[W3FPR - Don Wilhelm]

Michael,

You probably read that statement coming from me since I have posted it
frequently.

Even on a 'quiet' 10 meter band there is the liklyhood that there is still
some atmospheric noise.  Try doing it with the antenna disconnected (so all
the noise is actual receiver internal noise).  I believe you will find the
proper setting a bit higher than you have right now.

Yes, I have found some variability from K2 to K2 (which I attribute to
internal gain variability), and also variability depending on the bandwidth.
I normally use a CW filter set for a bandwidth of 0.70 for this adjustment
and it works well for me - and usually produces a AGC Threshold pot setting
of close to 3.7 volts (+/- 0.05 volts).

73,
Don W3FPR

> -----Original Message-----
>
>   I've read that the correct AGC voltage for _most_ K2s falls into the
> 3.65v to 3.8v range. When I adjust my AGC voltage such that I hear no
> difference with AGC off and AGC on on a quiet 10m band, I find that my
> AGC voltage is down around 3.5v. Other than this, my radio appears to
> work fine. My control board's 8v regulator is putting out 7.92v. Does
> this AGC voltage seem like a problem or can I rack this up to
> variability?
>
>   Thanks, Michael N9BDF
>
>