[Elecraft] [K3] AGC THR and noise

[Steven.Zabarnick at notes.udayton.edu]

I'm somewhat puzzled by the behavior of the AGC THR adjustment with respect
to band noise. My understanding is that the AGC THR setting adjusts the
level at which the AGC is activated. Thus, I would expect when listening to
band noise (QRN) that if the noise is activating the AGC, using a higher
number would prevent AGC activation, resulting in a lower background band
noise. But, my experience with the K3 is just the opposite. When adjusting
the AGC THR setting I get lower background band noise with a lower setting
-- as a matter of fact, a setting of 2 (the lowest AGC THR) signficantly
reduces the background noise relative to higher settings.

Can someone explain this to me?

Steve N9SZ
K3 #1672