Item 10. Radio Set ARC Type 12 (Transmitter; Radio T-366A /ARC). Emergency Vhf Communications

Change 1

TM 11-1520-209-ESC

RATINGS

PROCEDURE

GREEN

AMBER

RED

Note: The AN/ARN-30D or AN/ARN-

Strength and readability of signals

No reliable

30E is used for emergency vhf

are adequate to maintain reliable

reception. Do not transmit on

communications from both pilot's

either side. No sidetone.

emergency vhf frequency of 121.5

and copilot's position. Sidetone

megahertz. This radio transmitter

heard.

operates within line-of-sight. The

power output of the transmitter is low.

Man made or natural obstructions

between the aircraft and

communicating stations may prevent

reliable testing. Establish

communications with a station

located not less than I mile from the

aircraft. Set the pilot's and copilot's

C-161 I(*)/AIC for emergency vhf

communications. Turn on the

AN/ARN-30D or AN/ ARN-30E and

tune to frequency of local vhf station.

Select the same frequency for the T-

366A/ARC transmitter. Establish

two-way communication from the

pilot's and copilot's position. in turn.