I have the opposite problem. When I TX on 2, it overloads and quiets the
6M radio. I have a 2M stub filter on the 6M receive line for other
purposes, which probably gives me 10-15 dB of extra rejection, but I still
can't hear anything on 6 when 2 is in TX. Seeing the two antenna are on
the same mast, separated by 6' and I run high power on both bands, I really
can't complain. Probably a miracle I haven't smoked something important
On Mon, Jan 18, 2021, 11:40 AM Mark Spencer <email@example.com>
> Hi Chuck. I have recently started using a filter between my 2M radio and
> the antenna when I run my 6M and 2M roving antennas on the same mast. It
> seemed to improve matters considerably.
> That being said when I usually run separate masts for my 2M and 6M
> antennas I have little or any interference so my this may or may not be
> helpful for you.
> Good luck and 73
> Mark S
> 604 762 4099
> > On Jan 18, 2021, at 10:10 AM, Chuck Dietz <firstname.lastname@example.org> wrote:
> > I tried dueling CQs for 6M and 2M during the VHF contest. 6m was totally
> > quiet when 2m was transmitting, but 2m had S9 white noise when 6m was
> > transmitting. Antennas are 130 feet apart. Happens with even 50 watts on
> > 6M, although "only" S7 then. Using FT8 for both bands. Rig is Flex 6700
> > with a DEMI 2m low drive amp with receive preamp. When I transmit SSB on
> > 6m, it sounds like splattering on voice peaks.
> > I need advice on what to try.
> > Thanks,
> > Chuck W5PR
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