[Elecraft] P3 base line changes with span with.

[K7WIA]

I was using the P3 to capture a pix of the interference that I have on the 6
meter band calling frenquency to send to the FCC.

I captured a pix with the span set on the P3 at 100 kc,
then I reduced the span to 10 kc and captured a pix.

but I noticed that my noise floor with the span set at 100 is -125 dbm  this
was adjusted with the XG3.
but when I reduced the span to 10 kc the noise floor changed to  -135 dbm.
as I reduce the span from 100 kc it hold steady untill reduced to 50 kc and
as I narrow more the noise floor drops as it is being reduced....

what is going on?

Ed   K7WIA

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