[Elecraft] K3 cross-band split

[Craig D. Smith]

Trying to get set up for the IARU with my new subRX, and want to use SO2V
mode with N1MM logger.

It works fine when both VFOs are on the same band.

But when the logger tries to put K3 into split mode in a cross-band
situation, K3 says "SPL N/A" .  There is a note in the manual saying that
this could be due to incompatible modes on the VFOs, but both are on CW.

No doubt I'm missing something pretty simple.  Any ideas what?

Thanks and 73      Craig   AC0DS