Item 4 Radio Set AN ARC-54 or AN ARC- 131 Fm Communications (Without TSEC KY-28 or MD-736,A Installed)

Item 3. Radio Set AN/ARC-44. Fm Communications (Continued)

RATINGS

PROCEDURE

GREEN

AMBER

RED

communication from pilot's and

copilot's position. in turn After

communication check. tune SB-327

ARC-44 to an unused channel and

check squelch disabling

Item 4 Radio Set AN ARC-54 or AN ARC- 131 Fm Communications (Without TSEC KY-28 or MD-736,A Installed)

RATINGS

PROCEDURE

GREEN

AMBER

RED

Note: Establish two way

Strength and readability of signals

Reliable communications

No reliable two-way communication possible

communication with a tactical fm

are adequate to maintain reliable

possible from one

from either position.

station located not less than I mile

communications from each position position only No sidetone

from the aircraft Set the pilot's.

(pilot's. copilot's and troop

heard Squelch disabling

copilot's and troop commander's C-

commander's) Squelch disabling

inoperative.

1611(*) AIC for fm communication

operative; sidetone heard.

On the FM COMM control panel.

select the frequency of a distant

tactical fm station and set the mode

control to PTT or T/R Establish two-

way communication from the pilot's.

copilot's. and troop commander's

positions. In turn After

communication check. set the FM

COMM control panel to an unused

channel and check squelch disabling.

TM 11-1520-209-ESC