P3 noise floor base line question.

Posted by KD7PY on Feb 06, 2011; 5:00am
URL: http://elecraft.85.s1.nabble.com/P3-noise-floor-base-line-question-tp5997094.html

K3+P3.   when the K3 is set up into a dummy load, with the pre amp OFF. the noise base line is at S1/2 (between S0 & S1)  on the P3.
Then switching in the ATT the noise floor climbs to S2,
With the ATT switched in and the PREAMP on,  the noise floor goes back to S1.
With just the Preamp On the noise floor goes to S0
It does this on all bands
Is this right?  or am I just nit-picky

Ed K7WIA