TM 11-5820-890-10-1
SECTION II. EQUIPMENT DESCRIPTION
ITEM
PAGE
Capabilities and Features
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Characteristics
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Differences Between Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Equipment Data.. . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weights and Measurements
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Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Location and Description of Major Components . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Major Components Used With Radio Sets
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CAPABILITIES AND FEATURES
SINCGARS is composed of a receiver and a transmitter. Together, the Receiver-
Transmitter RT-1523(C)/U (RT) has many capabilities and features that enable you
to perform your mission more effectively. The Control, Receiver-Transmitter (RCU)
C-11561 (C)/U has the same audio/data characteristics, capabilities, and features
as the RT.
Single channel (SC) frequency modulation (FM) operation in VHF band
(30-87.975 MHz).
Frequency hopping (FH) mode for ECCM operation.
Preset channels: Eight for SC mode; six for FH mode. Six COMSEC channels
for SC or FH mode.
Quick, silent, push-button digital tuning.
Visual electronic displays: provide for quick checks and prompts.
Self-test for fast checking of equipment condition.
Voice and digital data communication.
2320 SC channels.
Handles secure traffic without attached equipment.
CHARACTERISTICS
TRANSMITTER
DUTY CYCLE (MP only) (amount of receiving time versus transmitting
time): MP SINCGARS duty cycle is 9:1. With a new battery, your RT is capa-
ble of continuous transmission (handset push-to-talk continuously pressed)
for at least one hour.
PRIMARY BATTERY LIFE (MP only): MP 18 to 20 hours at 70° F.
POWER DRAIN (average amount of battery current consumed): At average
battery supply voltages 3.25 amperes, maximum (manpack), 6.2 amperes
at 27.5 volts (vehicular).
l
CARRIER DEVIATION (voice): 6.5 kHz with audio input of 1.4 to 140 milli-
volts.
MICROPHONE INPUT IMPEDANCE: 150 ohms.
AUDIO INPUT (minimum): 1.4 millivolts, normal: 0.4 millivolts, whisper
(WHSP).
SQUELCH TRIGGER; Squelch tone signal at 150 Hz transmitted with RT FCTN
set to any operating position.
RECEIVER
RF (Radio Frequency) SIGNAL SENSITIVITY: 0.35 microvolts, minimum.
IF (Intermediate Frequency) BANDWIDTH: 25 kHz.
AUDIO OUTPUT IMPEDANCE: 600 ohms (handset at AUD/DATA or
AUD/FILL) .
SQUELCH: Responds to 150 Hz tone with RT FCTN (Function) set to SQ ON
(Squelch On) or LD (Load).
POWER DRAIN: At average battery supply voltages, 225 milliamperes,
(manpack) 0.762 amperes (SR), 1.094 amperes (SR/LR), 0.942 amperes
(LR), and 1.524 amperes (LR/LR).
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