[Elecraft] K3 AGC THR doesn't go low enough

[John Chappell G3XRJ]

Don,
Thanks for response again.
Recording was made from 'line out' so af gain not in play.

Havn't had chance to try your suggestion yet but think I've already been 
there.

73

John
> John,
>
> Your recording has substantiated the cautions that I have mentioned.
> First, attempts to evaluate the K3 AGC response with no signals on the
> band will lead you in the wrong direction.
> Secondly, you apparently have the AF Gain well advanced, perhaps even at
> maximum.
> Third, you have demonstrated that at low threshold settings the AGC can
> be activated on receiver noise alone. That fact is demonstrated by a
> reduction in noise when the threshold is lowered.
> Reducing the RF Gain has the effect of reducing the range of the AGC.
>
>