> However, when I contacted Elecraft Support, Gary recommended that I reload
> FW and do an RF gain calibration. His suggestion worked! The RF gain now
> works smoothly.

The DSP uses a table of values which map hardware IF gain to the 
hardware AGC voltage.  The default values happen to be the curve that 
matches my development K3's characteristics :-)  The observation you 
made on your radio's characteristics are the net difference between my 
development radio's IF gain versus AGC voltage and your radio's similar 
gain.

When you run the RF Gain Cal, the K3 measures the attenuation for your 
particular radio and stores the results in non-volatile memory.

Enjoy!

73,

Lyle KK7P


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