K3 sensitivity

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K3 sensitivity

N7ZG
I am using the Elecraft XG1 signal generator to calibrate my K3's S meter.  I followed the instructions (pre-amp on, filters broad, etc) but the best I do is calibrate to S-7 for 50mv.  When I turn the XG1 down to 1mv the S-meter reads 1 instead of 2-3 S units.  I noticed that I had to add about 4db of gain to my 400Hz 8 pole filter to compensate.

Is this normal?

73 - Guy, N7ZG