FREQUENCY HOPPING MULTIPLEXER (FHMUX) (TD-1456/VRC)

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

Multiplexer TD-1456/VRC (FHMUX)

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