My modifications to a Murch UT-2000A Antenna Coupler.
-THE ULTIMATE TRANSMATCH-
The original look of a Murch UT-2000A antenna
coupler. This model does not provide switching for multiple
antennas, dummy load or a bypass mode. I wanted to have these
options so it was decided to undertake some modifications.
A 6 position dual gang ceramic switch,
extension shaft and shaft bushing is added to the tuner
Close up view of the rotary switch secured to
the rear panel via some PCB standoffs I had on hand.
Bushing for switch shaft added to front
panel. the bushing was saved from some scrapped project from the
Addition of two extra SO-239 co-ax connectors
to the rear panel. A pair of insulators for a balanced line option
have yet to be fitted in place of the connection for a random wire.
The case repainted in blue. Turns
counter painted satin black then 2 coats of clear lacquer.
Reassembled and ready for testing. I
have yet to make a label for the antenna selector switch.
Power and SWR monitoring is done externally with a commercial cross
needle power/SWR meter.
Here is the UT-2000A back on-line
with some front panel labels now in place.
The bypass positions on the antenna selector switch takes the tuner
out of circuit. 'off-line'