[TMC] ATS-2 problem
H.L.
hl at sfsu.edu
Mon Sep 7 19:25:37 EDT 2009
Hello All:
Help! I just acquired a very nice ATS-2 unit, consisting of the
SWR/Wattmeter monitor/meter (Model MCU-2), the antenna coupler
(CU-2/70) and the matching vertical antenna tuner. I think parts are
missing from the antenna coupler, but am not sure. If anyone has the
coupler handy for inspection, I would appreciate if you would compare
your coupler with the photo of mine on webpage:
http://online.sfsu.edu/~hl/ATS2.AntCoupler.html
As shown, I cannot find the two diodes, CR301 and CR302, two RF
chokes, L301 and L303, and two capacitors, C303 and C306. Are they
all hidden inside R301? The meter's two needles operate fine when
tested (carefully) with a VTVM set at high scale. The coupler seems
to work properly with the meter in providing a FORWARD Watts reading,
but it does not give any REFLECTED reading at all. I know my SWR is
not THAT good!
When I reverse the hookup--as recommended in the manual for zero
adjustments, neither needle indicates a reading as if the transmitter
has no output.
Any suggestions will be appreciated.
73 Hal KK6HY
email: kk6hy at arrl.net
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