When any of the filters in the 5-channel multiplexer are not being
used, replace the band-pass filters with a termination unit as
presented in c below or set rest frequency of unused band-pass filters
5 percent removed from any operating frequencies.
c. Termination Unit MX010080 ( )/GRC. Check the rf connector on the bottom of the terminal
unit, and make sure it is clean. Install the termination unit by first positioning it over the mating
rf connector on the coupler and then gently pressing the termination unit straight down. After
insertion, secure the termination unit with two captive screws.
When one of the band-pass filters in the 2-channel multiplexer or four
of the band-pass filters in the 5-channel multiplexer are not being
used, remove the multiplexer and connect the transceiver rf output
directly to the antenna. When three of the band-pass filters in the
5-channel multiplexer are not being used, replace with a 2-channel
multiplexer or temporarily replace the three band-pass filters with
termination units, thereby creating an unauthorized 2-channel
configuration; or temporarily operate with the unused band-pass filters