Additional Equipment Required

TM 11-5821-277-20

front panel is also aluminum but is equipped

Two holddown clamps are on the mounting.

When the transceiver is installed in the mount-

with an edge-lighted, black plastic overlay so

ing ( fig. 1-6), the holddown clamps slip over

that only panel markings are lighted by three

panel lights. Two internal lamps light the tinning

the holddown brackets on the transceiver and

secure the transceiver in place. Dual connector

window when power is applied to the radio set.

Quick-release fasteners are at each of the four

J1A and J1B on the mounting mates with dual

connector J1A and JlB at the rear of the trans-

corners of the front panel to secure the control

ceiver ( fig. 15). Feedthrough pins at the rear of

unit to an aircraft instrument panel, or to another

the mounting (fig. 1-7) are provided for con-

s u i t a b l e mounting if desired. A VHF COMM

nection of aircraft wiring necessary for integra-

tuning indicator window, two tuning knobs, a

tion of the radio set into the aircraft avionics

V O L control (concentric with the right-hand

system.

tuning knob), an OFF PWR switch (concentric

with the left-hand tuning knob), a COMM TEST

pushbutton switch, and three panel lamps arc

1-10. Additional Equipment Required

mounted on the front panel of the control unit.

Table 1-1 lists the additional equipment required

Connector J1 at the rear of the chassis (fig. 1-7)

for operation of the radio set.

provides all necessary interconnections for the

NOTE

control unit.

d. Mounting (fig. 11). The aluminum mount-

The equipment listed in the table below includes

additional equipment required for operation of

ing consists of two guide channels and a rear

the radio set when it is installed in an aircraft

bracket. Four resilient mounts are affixed to the

and using the C-16LlD/AIC in the aircraft. To

b o t t o m of the guide channels. The resilient

provide transmit and receive capability at the

mounts secure `he mounting to the aircraft and

front panel of the transceiver, use Microphone

protect the transceiver from vibration and shock.

M-52B/U and Headset, Eletrical H-216/U.

Table 1-1. Additional Equipment

Applicable publication

Equipment

Purpose

Vhf antenna (type 37R2 or equiva-

Receives and transmits RF energy.

lent) .

Control, Intercommunication Set

Interfaces received l udio signals into TM 11-5831-201-35

G1611(D)/AIC, or equivalent.

aircraft audio distribution system,

routes audio signals from micro-

phone to modulator section of trans-

ceiver, and switches transceiver

from receive to transmit function.

Provides aural monitoring capability TM 11-5965-216-15

Headset H101A/U, or equivalent.

for received audio signals. Also pro-

vides microphone for routing of

voice signals to transmitter portion

of transceiver through Control, In-

tercommunication Set C-1611(D)/

AIC.

Applicable aircraft technical manual.

External push-to-talk switch cir-

Enables operation of microphone am-

cuitry.

plifier in C-1611(D)/AIC, and

applies transmit keying signal to

transceiver through C-1611(D)/

AIC.

Applicable aircraft technical manual.

Aircraft junction box

Provides interface for radio set and

aircraft wiring.

Applicable aircraft technical manual.

Aircraft cabbing

Provides necessary interconnection

of radio set in aircraft.

1-11. Difference in Models

Radio Sets AN/ARC-134 and AN/ARC-134A are

modified to Radio Set AN/ARC-134B as a result of

MWO 11-5821-277-30/1.

Change 1

1-5