[Elecraft] K3 subreceiver question

[adamkern at uchicago.edu]

With the K3 subreceiver installed and while using binaural
audio output from both receivers, is there a provision so that
a switch toggles between memory VFO A/B within one receiver,
and not between (physical) main- and sub-receivers?

Example: If working a split DX pileup, can you set one
receiver to the DX frequency, the other receiver to a
frequency in the pileup and use a toggle to switch the pileup
receiver between soft VFOs so that one can alternately listen
to the pile with wide/narrow filters?  Or, does one have to
adjust the DSP/XFIL filter width on the pileup receiver?

TNX,

N1KO