[Elecraft] K3 receiver desensing on CW during contest

John W2XS jm416 at optonline.net
Mon Feb 23 13:15:21 EST 2009



Is my summary of the issue correct?

If both signals are within both the DSP and roofing filter bandwidths, then
the receiver recovers instantly after each character.

If the stronger signal is outside the DSP filter window (and you can’t hear
him) but inside the roofing filter window, then there is de-sensing.

Would passband tuning (shift) help to shift his signal outside of the
roofing filter bandpass?

John W2XS
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