[Elecraft] Attenuator and RF Gain Settings

[Lance Wilson]

This is a very interesting thread. I am seeing a similar RF gain/AGC issue on
my K3 (I posted a description of this effect on 1/31). While I have also
defaulted to presetting the AFG and use the RF gain to control receiver
performance, I have noticed issues with the AGC on the K3 that make it
behave differently than other radios that I have tried. The K3 has both
hardware and DSP/firmware AGC. 

Strong signals (over S9) cause the AGC to behave normally but weak signals
(DSP/firmware) behave oddly with an apparent, and I say apparent, noise
issue. Audio quality of weak signals with the AGC on also seems to be
slightly compromised as compared to operation with the AGC off.

Perhaps weak signal performance of the K3 with AGC on needs some
DSP/firmware modification. In the meantime, I am using the rig in a similar
fashion as Barry and other have described.

Lance, NR7N
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