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TM 11-5820-890-20-2
1-6
1.8.
DESCRIPTION OF COMPONENTS. Continued
FCTN
SWITCH
MODE
SWITCH
COMSEC
SWITCH
CHAN
SWITCH
DIM
CONTROL
RF PWR
SWITCH
VOL/WHSP
CONTROL
KEYBOARD
AUD/FILL
CONNECTOR
(J3)
AUD/DATA
CONNECTOR
(J4)
ANT
CONNECTOR
(J1)
RXMT
CONNECTOR
(J2)
SYSTEMS
CONNECTOR
(P1)
DISPLAY
RECEIVER TRANSMITTER, RADIO RT 1523A
HUB
Single channel frequencies may be offset (up or down) by 5 or 10 kHz. A tone operated squelch circuit uses a
150 Hz tone to disable the squelch. This allows inter operation of the RT with older series of radios and
equipment used by NATO forces. The level of RF power output on the RT is from 500 microwatts to 4.5 watts,
and may be selected using a front panel switch. The RT 1523 series also feature secure voice and data
functions, which are built into the RT. The COMSEC selector switch is used to select cipher or plain text. A
manpack antenna or any standard 50 ohm broadband antenna may be connected to the RT. Radio retransmit
functions are built into the radio and need no external equipment except a retransmit cable to join two RTs
together. The RT is capable of transmitting and receiving analog voice, analog data (AD1 or TF), and digital
data (600, 1200, 2400, 4800, or 16000 bps) signals. Baseband voice signals are from 300 to 3,000 Hz. The
different data rates are manually selected from the keyboard. The RT is capable of an internal self test, which
can be initiated by the user to determine if the unit is faulty.
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