Yes, I did, Frank.
See some of my later posts.
It's interesting that Howard has the same problem with a setup similar to
mine, at least in terms of rigs.
Tom Behler: KB8TYJ
-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Frank Ventura
Sent: Monday, November 02, 2015 12:17 AM
To: [log in to unmask]
Subject: Re: Interesting TMV71A Issue
Have you checked all power connections, ie at the power supply, at the rign=
and also the inline fuse?
-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]] =
On Behalf Of Tom Behler
Sent: Sunday, November 1, 2015 6:18 PM
To: [log in to unmask]
Subject: Interesting TMV71A Issue
Hi, everyone.
=20
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.
=20
This time, I'm experiencing a very strange problem with my Kenwood TMV71A.
=20
The problem occurs mainly when trying to transmit with high power on 440, b=
ut 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 shut=
s off for a split second, but then comes back on. It's almost as if the ri=
g is not happy transmitting on high power for some reason, again, especiall=
y on 440.
=20
I discovered this issue late this afternoon, as I was doing my usual monthl=
y tests of equipment, antennas, etc., at least as best as I can from here i=
n the shack at the home QTH.
=20
In trying to diagnose the problem, I have done the following things so far:
=20
1. My first thought was that something has gone wrong with my outdoor Diam=
ond 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 f=
orward 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 b=
etween 1.2 to 1 and 1.3 to 1. On medium power, my forward power on each ba=
nd is between 9 and 10 watts, and my reflected power is either at 0 watts o=
n 2 meters, or point 2 watts on 440.
=20
2. I then tried switching jumpers between my TW2, and the Diamond X200 con=
nection on my MFJ window feed through panel. Again, no change.
Admittedly, I haven't swapped all jumpers out, but at least the initial jum=
per swap didn't change the results.
=20
3. I then did a V F O re-set on the TMV71A, with again, no change in my re=
sults. 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 memori=
es and menu settings saved in a data file for the rig.
=20
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 bo=
x for the winter.
=20
Before I go too crazy with all this, though, I'd like to know whether anyon=
e else has experienced this issue, and if there are other ideas out there t=
hat I might want to try.
=20
Thanks as always for the help.
=20
Tom Behler: KB8TYJ
=20
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