[Elecraft] Help. K2 noise level variation with band selected

[Peter Eijlander (PA0PJE)]

Hi Ray and John,

KSB2 manual page 22:
Note: The BFO settings for LSB and USB are swapped on 15, 12 and 10 
meters due to the K2's frequency
mixing scheme. If you use 17 m or below for making BFO changes, the 
following rules apply:
LSB: moving the LSB BFO lower in frequency will raise the voice pitch 
and improve carrier rejection.
USB: moving the USB BFO higher in frequency will raise the voice pitch 
and improve carrier rejection.

That's the reason for what you observe.

73,
Peter - PA0PJE

John Oppenheimer schreef:
> Hi Ray,
>
> I believe that your observation is normal. I performed a fresh CAL FIL
> alignment on the two SSB modes, and tried your test, I get similar results.
>
> When on 21 MHz, USB has lower frequency noise, LSB has higher frequency
> noise.
>
> John KN5L
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