Tom have you ever used your finger, whoops, I mean a dummy load 
instead of the outdoor antenna? Even though you cheçked your SWR, 
it might be good to try it on a dummyload before putting the 
other rig into service.  Have never had that issue with my 71A 
and Diamond antenna.  Good luck, Jim WA6EKS

 ----- Original Message -----
From: Tom Behler <[log in to unmask]
To: [log in to unmask]
Date sent: Sun, 1 Nov 2015 18:17:59 -0500
Subject: Interesting TMV71A Issue

Hi, everyone.



Well, last night, I got rid of the gremlin that was causing 
issues with my
ability to play selected audio files using Winamp, but now, 
another gremlin
has appeared in my shack.



This time, I'm experiencing a very strange problem with my 
Kenwood TMV71A.



The problem occurs mainly when trying to transmit with high power 
on 440,
but it happens occasionally when trying to do so on 2 meters as 
well.
Basically, when I transmit with high power, especially on 440, 
the rig shuts
off for a split second, but then comes back on.  It's almost as 
if the rig
is not happy transmitting on high power for some reason, again, 
especially
on 440.



I discovered this issue late this afternoon, as I was doing my 
usual monthly
tests of equipment, antennas, etc., at least as best as I can 
from here in
the shack at the home QTH.



In trying to diagnose the problem, I have done the following 
things so far:



1.  My first thought was that something has gone wrong with my 
outdoor
Diamond X200 VHF/UHF antenna, which is fed with RG9913 coax and 
is on the
roof of my house at a height of approximately 35 feet.  I took 
SWR, as well
as forward and reflected power readings using my TW2.  Both on 2 
meters and
440, adjusting the meter for each gand as I went.  my SWR's on 
each gand are
between 1.2 to 1 and 1.3 to 1.  On medium power, my forward power 
on each
band is between 9 and 10 watts, and my reflected power is either 
at 0 watts
on 2 meters, or point 2 watts on 440.



2.  I then tried switching jumpers between my TW2, and the 
Diamond X200
connection on my MFJ window feed through panel.  Again, no 
change.
Admittedly, I haven't swapped all jumpers out, but at least the 
initial
jumper swap didn't change the results.



3.  I then did a V F O re-set on the TMV71A, with again, no 
change in my
results.  I'm a bit reluctant to do the full re-set, but may do 
so as a last
resort, since I have the TMV71A programming cable, and also have 
all
memories and menu settings saved in a data file for the rig.



One other thing I might try is to see if this happens with the 
TMV71A that I
typically use when camping out at the RV.  It is here in my shack 
in a box
for the winter.



Before I go too crazy with all this, though, I'd like to know 
whether anyone
else has experienced this issue, and if there are other ideas out 
there that
I might want to try.



Thanks as always for the help.



Tom Behler: KB8TYJ