TM 11-5820-880-12
b. Band-pass Filter.
(1) Unkey all transceivers so that all rf input power is removed from the multiplexer.
(2) Disconnect the rf coax cable from connector J1 at the rear of the band-pass filter.
(3) Loosen four (4) screws and two (2) captive screws in the front, and two (2) screws in the
rear that secure the band-pass filter to the coupler.
(4) Remove the band-pass filter by pulling it straight up until separated.
(5) To install a replacement band-pass filter, reverse the above procedure.
Coupler.
c.
(1) Unkey all transceivers so that all rf input power is removed from the multiplexer.
(2) Remove the coax cables from all band-pass filter inputs.
(3) Remove the coax cable from the antenna connector on
the coupler.
(4) Remove the wires attached to the ground lug at the rear of the coupler.
(5) Remove the four (4) bolts that hold the coupler to the mounting surface. Two (2) bolts are
located in the front and two (2) in the rear. -
(6) Loosen four (4) screws and two (2) captive screws in the front, and two (2) screws in the
rear of each band-pass filter.
(7) Remove each band-pass filter by pulling it straight up until separated.
(8) Loosen the two (2) captive screws that secure each termination unit to the coupler.
(9) Remove the termination unit by pulling straight up, using the termination unit handle, until
separated.
(10) Install the termination units in the replacement coupler.
(11) Install the band-pass filters in the replacement coupler.
(12) To install a replacement coupler to the mounting surface, reverse the above procedure.
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