[Rover] Interstation Interference in Multi-Op Rovers

[Sean Waite]

How does everyone handle this?

Our setup is as follows:
Front seat station, 2m and 70cm
Rear seat station, 6m and 1.25m

The front station uses a drive-on mast with the 2 and 70cm antennas on it,
the rear station uses a hitch mount mast with the 6 and 1.25 antennas on
it.

The 6m station has a bandpass filter and the 1.25 station is on a triplexer
that kinda sorta almost (not really) filters out some of the crud. We're
planning a bandpass filter on the 2m station, but it hasn't happened yet,
and I'll be building up some coax stubs (likely 6m and maybe a 70cm
bandstop to put on the 2m station).

Depending on which direction the antennas are aimed, we get somewhere
between a faint amount of QRM up to rendering it useless on 2m when 6m
transmits. I think some of the filtering will help, but when you are
transmitting 100W of 6m into a moxon and it's aimed right up the rear end
of the 2m yagi I'm unsure how much that will do. We got around it somewhat
in the September rove by calling CQ at the same time.

Any other recommendations here? One idea would be to bond the grounds on
all of the radios together, but I'm leaning towards that being worthless.
We also could put 6 and 2 at the same station, but we're hectic enough at
times that whichever op was on that station would be pretty busy. It might
also be a bit boring on the 222/432 station, but maybe we'd grab a few more
random contacts on there by calling CQ. The preference would be to keep the
band split unless it's truly hurting us.

Thanks!

73 de Sean WA1TE (K1SIG/R)