[Mobile-Portable] IC706

[Jim Miller]

I don't know if you used all frequencies avail to 2M simplex for your
contest BUT for QRM problems when need, I have an old "strip-line" filter
that I bought from a fellow ham who made them maybe 14 or 15 years ago.  It
works great and really narrows the receive freq.  I had trouble with
intermod from paging towers in some areas I traveled every day and it was
quite a pain.  The filter did  and does work great.  Not real pretty but it
WORKS.  It has to be retuned when moving from 146 simplex to 147 simples etc
but not a problem as you just touch up the knob while watching the swr
meter.

73, Jim

----- Original Message ----- 
From: "Larry Comden" <lcomden at comcast.net>
To: "Mobile-Portable Reflector" <mobile-portable at mailman.qth.net>
Sent: Sunday, January 14, 2007 4:44 PM
Subject: [Mobile-Portable] IC706


We just ran our club 2M simplex contest with 50 to 100 stations in the local
area.. I was mobile with my IC706 MkIIG. Strong signals on adjacent (15KHz)
FM channels were bleeding thru so badly that weak signals (the life blood of
a contest like this) were swamped. We were definitely not operating side by
side. My competitors were 3 or more miles away - some mobiling some fixed.
All stations limited to 50W.

I've also noticed this effect in other locations near paging, radio and TV
transmitters. Does anyone on the list know what front end VHF/UHF filtering
is done in this rig?

At home on HF I can use the RF gain to reduce the effect.


Larry K3VX
----
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