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Page Title: FREQUENCY HOPPING MULTIPLEXER (FHMUX) (TD-1456/VRC)
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TM 11-5820-890-10-8
3.3.
FREQUENCY HOPPING MULTIPLEXER (FHMUX) (TD-1456/VRC)
The multiplexer combines any mix of up to four low to high power frequency hopping (SINCGARS) transceivers
to a single antenna. The FHMUX unit operates across the 30.000 to 87.975 MHz frequency range. The primary
function is to extend the multiplexing capability to frequency hopping radios. In addition to the multiplexing
function, the FHMUX prevents frequency collisions and provides the selectivity necessary to attenuate any local
interfering signal which might otherwise result in degrading the receiver sensitivity. The FHMUX is digitally tuned
via the SNAP interface when controlled by a SINCGARS radio
3.3a.
FHMUX COMPONENTS
1.
Multiplexer TD-1456/VRC (FHMUX)
2.
Mounting Base
Figure 3-2. Multiplexer TD-145/VRC and Mounting Base
3.3b.
FHMUX Physical Data
NOTE: Weights are in kilograms; measurements are in centimeters. The numbers in parentheses
show equivalent pounds and inches.  All weights are approximate; all measurements are
maximums.
WEIGHT
HEIGHT
ITEM
LENGTH
WIDTH
25 (56)
21.6 (8.5)
Multiplexer
43.2 (17.0)
40.6 (16.0)
8.6 (19)
41.4 (16.3)
8.9 (3.5)
Multiplexer mounting base
40.6 (16.0)
3-5


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