OPERATION UNDER USUAL CONDITIONS
Before assembling the multiplexer, turn off the power switches of all
transceivers and auxiliary receivers in the system.
Do not lay the multiplexer on its back or handle side. This may cause
damage to the rf connector, ground lug, or handle. Stand it up.
When removing the band-pass filter from the coupler, pull straight up
to avoid damage to the rf connector on the bottom of the band-pass
filter or its mating rf connector on the coupler. When carrying a
multiplexer, use the handle. When transporting a multiplexer, use the
Insure couplers, band-pass filters, and termination units in all vacant
filter jacks are securely connected. Loose connections can cause rf
Assembly of the 2-channel multiplexer is similar to the 5-channel multiplexer, the difference
being in the number of band-pass filters and termination units.
a. Coupler CU-2266 ( )/GRC and CU-2267 ( )/GRC. Check the band-pass filter mating
connectors and antenna connector on the coupler, and make sure they are clean. Check the
ground lug on the rear of the coupler, and make sure that it isn't damaged. Secure the coupler by
installing four mounting bolts.
b. Band-pass Filter F-1482( )/GRC. Check the rf connector on the bottom of the band-pass
filter, and make sure it is clean.
rf connector on the coupler and then gently pressing the filter straight down. After insertion,
secure the band-pass filter with four screws.