[Elecraft] [K3] Question about APF with Diversity Rx enabled

Bill Tippett btippett at alum.mit.edu
Fri Dec 31 17:37:27 EST 2010


VE3MV:

 > As I understand it, (at a high level) with Diversity turned on, 
both the MainRx
and SubRx are turned on, use the same bandwidth roofing filters and the main
VFO A provides the same LO signal for both receivers resulting in audio from
the MainRx going to the left ear and the SubRx audio going to the right ear.
If the APF is now turned on, does the DSP1 for the MainRx and DSP2 for the
SubRx now apply that filter functionality to the two separate Main and SubRx
audio signals so that turning the shift knob actually tunes the peak 
in both of
the separate audio streams together?

Yes, but both VFOs share the VCO reference (i.e. not VFO A driving 
VFO B).  Both VFOs are always tuned together by the DSPs and MCU when 
in diversity mode.

73,  Bill  W4ZV





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