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TM 11-5820-890-20-2
1-11
1.8.
DESCRIPTION OF COMPONENTS. Continued
AMPLIFIER ADAPTER, VEHICULAR AM 7239/VRC
RT B SYSTEM
CONNECTOR (J7)
RT A SYSTEM
CONNECTOR (J8)
BOTTOM
SHELF
AUD/DATA B
CONNECTOR (J2)
AUD/DATA A
CONNECTOR (J3)
DATA B
CONNECTOR (J4)
DATA A
CONNECTOR (J5)
SPKR
CONNECTOR (J6)
TOP
SHELF
INJECT/EJECT LEVER
THUMBSCREW AND
CLAMP
DIMMABLE
LIGHT (DS1)
ON/OFF SWITCH
(CB1)
SYSTEM
CONNECTOR (P1)
PA CONNECTOR (J1)
REMOTE/LOCAL
SHORTING BAR
The Amplifier Adapter, Vehicular AM 7239 series (VAA) will hold two RTs and one PA. The VAA mounts in
mounting base MT 6352/VRC. When two RTs are installed in the VAA the bottom RT is referred to as RT A and
the top RT is RT B. Each RT operates independently. Data A connector (J5) is connected by an audio cable to
RT A AUD/DATA connector (J4). The handset for RT A connects to AUD/DATA connector J3. Data B connector
(J4) is connected by an audio cable to RT B AUD/DATA connector (J4). The handset for RT B connects to
AUD/DATA connector (J2). The two RT receive signals are summed in the one watt audio amplifier and sent to
the speaker connector (J6). A tone detector detects TACFIRE signals and controls the RT for TACFIRE devices.
RT A and/or RT B may be replaced with an RCU A or RCU B. When a PA is installed at connector J1, RF cable
(W2) is connected from RT A (J1) to PA (J2).
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