[Elecraft] K3 Rf gain tracking (main vs. sub)

[Stan Gibbs]

paulb wrote:
> 
> Interesting to note non-linear RF gain control.
> Same thing here on the main RX.
> 
Nice to know that I'm not the only one seeing this!  Thanks, Paul.

Here's some more data.  Perhaps someone can illuminate us on what it
indicates.

With my XG2 on 20m, and adjusting the main RF gain knob from full CW to full
CCW, the AFV display goes from 2329 to about 18 at the 10 o'clock position,
jumps to 1233, then declines to about 80.  The dbV display starts at +29.3
and declines to -12.4, jumps to +23.6, and then declines to -0.1 at full
CCW.

Remember that the "SCN ADC" results show us that the gain control is linear
in its output.

What could cause the IF gain to behave this way?  Anybody?


-----
73, Stan - KR7C
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