I have a similar issue when using my 253 in auto-tune with my TH-7DXX on ten
meters, but it is apparently due to the frequency being tuned and the last
setting in memory. If I cycle the 253 off then on and then press both the L
and C rockers to sync the Capacitors and Inductor, wait til they finish and
then (auto) tune, it will work. On occasion, I may have to go through the
process several times or change the frequency but it will get it done.
Another thing to consider is the feed line length; have you tried adding a
coaxial jumper to increase the feed line length to the antenna to change its
natural resonance and VSWR points?
73 es DX,
Gary - AB9M
-----Original Message-----
From: n2wk
Sent: Tuesday, November 08, 2011 5:56 AM
To: tentec@contesting.com
Subject: [TenTec] TT-253 Tuner Help?
One of my 253 Auto tuners is acting strange. I can tune antenna's manually
and all meter functions work as they should. When I try to tune using auto
tune the tuner faults every time. Any quick remedies before it has to go on
a trip to TT? I have already changed the memory chip and no luck there.
73, Wayne N2WK
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