Section II. COMMAND POST OPERATION

TM 11-5821-285-12-1

Section II. COMMAND POST OPERATION

ARC-51BX con-

Function select switch.......

OFF

3-3. General

trol head-sta-

Preset channel selector ....

a. The AN/ASC-15A(V)1 includes controls for three

tion 3-(V)2

SQ DISABLE switch..........

OFF

operator positions controlling three ARC-131 radios

only

Frequency selector

(VHF-FM) or an ARC-164 in number 3 FM station. The

switches ............................

ARC-131 radios can be encrypted with TSEC/KY-28's

desired

but not the ARC-164. The AN/ASC-15A(V)2 has two

ARC-164 radio

Function switch ................

MAIN

ARC-131 radios and two associated TSEC/KY-28's, the

MANUAL-PRESENT-

third station controls the ARC-51BX radio or the ARC-

GUARD switch...........

MANUAL

164 radio.

SQUELCH ........................

b. The console may be operated in four separate

SQ-MN ..............................

modes: receiver monitoring, two-way voice com-

counterclockwise

munications, intercommunication between operators, or

until noise is heard. Then

secure/nonsecure automatic retransmission. Any of the

turn control clock-

three VHF-FM radios may be used to receive or transmit

wise until receiver is

plain or ciphered communications. Refer to KAM-

quiet. Turn clockwise

248A/TSEC manual listed in appendix A.

an additional 1/8

turn.

Function switch .................

BOTH

3-4. Preliminary Starting Procedure

NOTE

Prior to energizing the console, the following controls

Main receiver

should be set to the positions specified below to

SQUELCH must be in

establish the system in a preoperational, shutdown

the ON position.

condition. When performing the preliminary starting

ICS box-stations 4,

RECEIVERS switch (4) ......... off

procedure, make sure the AN/ASC-15(A)V(*) CONSOLE

(down)

circuit breaker is in the OFF (out) position.

5 and 6, (V)1 and

RECEIVERS NAV switch ...... off

(down)

Console Controls

POWER switch ...............

OFF

(V)2 versions

RECEIVERS INT switch ....... off

(V)1 and (V)2

INT circuit breaker ...........

out

(down)

FM-1 circuit breaker ........................................

out

VOL control ..............counter-

FM-2 circuit breaker ........................................

out

clockwise

FM-3 circuit breaker ........................................

out

Transmit-interphone

SEC circuit breaker

........................................

out

selector switch ............. PVT

ICS box-stations 1 RECEIVERS 1, 2, 3, 4

3-5. Cable Connection for Command Post Operation

and 2, (V)1 and

switches.......................

off (down)

(fig. 3-7 and 3-8)

(V)2 versions

RECEIVE RS NAV switchoff

(down)

a. Ensure cable connector No. 49 is connected to

RECEIVERS INT switch .....................................

off (down)

No. 50 (fig. 3-8).

VOL control

counter-clockwise

b. Ensure plug P1 (35), plug P2 (35), plug P1 (36),

Transmit-interphone

and plug P2 (36) are connected to their respective KY-

selector switch ......PVT

28's or to the bypass box (fig. 3-7).

FM control head-

Mode control switch ........

OFF

stations 1, 2

VOL control .....................

counter

c. Ensure cables for the HYL-3 regenerative-

and 3

clockwise

repeater are properly stowed.

SQUELCH switch ............

DIS

d. If the RT-1167/ARC-164 is to be used, ensure

Frequency selector

that both ends of its cables are properly connected (para

switches (4) .....................

optional

1-12 and para 2-3a).

KY-28 control

POWER ON switch .........

OFF

e. Secure retransmission system monitor KY-28

head

PLAIN/CIPHER switch ....

PLAIN

connector No. 56 on connector No. 52 and the HYL-

RE-X/REG switch ............

REG

3/TSEC No. 53 (RT-1) connector and No. 55 (RT-2)

ZEROIZE switch..............

off (down)

KY-28 control

POWER ON switch .........

OFF

connector to the two bypass connectors No. 60. The X-

head stations

PLAIN-CIPHER ...............

PLAIN

mode connector No. 47 is held by the clamp directly

1, 2, and 3

RE-X/REG.......................

REG

below the bypass connectors, and power connector No.

ZEROIZE.........................

off (down)

59 is attached to the lower clamp.

Remaining

connectors are attached for normal command post

operation (para 3-7). 3-6. Starting Procedure

The console controls shall be set according to

preliminary starting procedure (para 3-4). Take note

of the following to ensure proper operation of the

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