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|  TM 11-5821-285-12-1
e. Intercommunications Facilities.
degraded communications by excessive bending of the
transmitted wave due to abnormal atmospheric
Control, Intercommunication Set C-1611D/
conditions. This condition usually applies to frequencies
AIC:
below 40 MHz. Also, excessive path attention may be
Voltage required .....
27.5 vdc
experienced over a large body of water. In all cases,
Input power .............
6 watts
airborne retransmission may overcome the restriction.
Control Facilities (max):
Transmitters ...........
4
1-8. Technical Characteristics
Receivers................
8
The technical characteristics of Communications Central
f. Cipher Facilities.
AN/ASC-15A(V)(*) are listed below:
Control Indicator C-8157/ARC:
a. AN/ASC-15A(V)1, (V)2Dimensions.
Modes of Operation Plain, cipher
Height: 34 1/2 inches, 87.6 cm
retransmission
Depth: 31 1/2 inches, 80 cm
Voltage required............
28 vdc
Width: 17 1/2 inches, 44.5 cm
Input power (approx) .....
14 watts
Weight: 245 lb., 111 kg (Max; depending upon
Computer, Voice Security TSEC/KY-28:
radio configuration)
25 vdc 4
b. Power requirements.
Voltage required............
AN/ASC-15A(V)1: 600 watts (max)
Input power (approx) .....
31.5
AN/ARC-164 is installed, 500 watts (max)
(5 amperes for 15 milliseconds during zeroize operation)
AN/ASC-15A(V)2: with ARC-51BX 712 watts
c. FM Radio Facilities.
1-9. Nomenclature and Common Names
Radio Set
A list of the nomenclatured items applicable to
AN/ARC-131..................
27.5 vdc
Communications Central AN/ASC-15(V)(*) is provided in
Input power....................
125 watts
Output power .................
1/2 watt (min), low
this manual is indicated after each item.
power mode 10
watts (min), high
Table 1-1. Nomenclature and Common Names
power mode
Frequency
30 MHz to
Nomenclature
Common Name
75.95 MHz VHF-
FM (plain or
Coupler, Antenna CU-942C/ARC-54
ciphered), 800
or CU-2206/ARC
FM coupler
Receiver-Transmitter, Radio
channels 50
RT-742/ARC-51BX
ARC-51BX
KHz spacing.
Control Radio Set
d. AM Radio Facilities.
C-6287/ARC-51BX
ARC-51BXcontrol
Radio Set AN/ARC-51BX:
head
Voltage required ............
27.5 vdc
Control Intercommunication Set
Input power (approx) .....
350 watts
C-1611(*)IAIC
ICS box
Output power .................
20 watts (min)
Control Indicator C-8157/ARC
KY-28 control head
Frequency......................
225 MHz to 399.95
Headset-Microphone H-157/AIC
Headset
Computer, Voice Security
MHz, UHF-AM
TSEC/KY-28
KY-28 crypto box
(plain test), 1750
Receiver-Transmitter, Radio
channels, fixed
RT-1167/ARC-164
ARC-164
guard channel,
Receiver-Transmitter, Radio
100 KHz spacing.
RT-823/ARC-131
FM radio
Radio Set AN/ARC-164:
Control, Radio Set C-7088/ARC-13
FM control head
Voltage required ............
27.5 vdc
Communications Central
Input power (approx.) receive 35 watts;
AN/ASC-15A(V)*)
Console
(approx.)
transmit 110 watts
Interphone junction
JB-1
Radio junction box assembly
JB-2
Frequency 225
Radio frequency cable assembly
RF cable
MHz to 399.975
Antenna AS-1703/AR
FM whip antenna
MHz, UHF-AM
Antenna AT-450/ARC
UHF stub antenna
(plain text)
Regenerative-Repeater HYL-3/TSEC
HYL-3/TSEC
Mounting MT-3664/ARC-131
FM mount
Plug Connector U-94A/U
Headset plug-in
Mounting MT-2653/ARC
MT-2653/ARC
1-4
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