Section II. EQUIPMENT DESCRIPTION AND DATA

TM 11-5895-1141-34

Section II. EQUIPMENT DESCRIPTION AND DATA

SECTION CONTENTS

PAGE

Purpose and Use

Physical Description and Module Location

Description of Major Components

Electrical and Signal Characteristics

Operation

Difference Between Modules

1-4. PURPOSE AND USE

The purpose of the C-10931(P)/FRC equipment is to provide a capability of controlling 1 to 8 radio channels used in air

traffic control by means of a complete radio control operator's position. Each radio channel contains a transmitter and

receiver remotely operated through the Radio Channel Control System.

1-5. PHYSICAL DESCRIPTION AND MODULE LOCATION

The C-10931(P)/FRC equipment is a self-contained unit designed to be mounted on a flat, horizontal surface wherever

operation is convenient and necessary wiring is accessible. The console is 16-1/4 wide by 14-1/2 deep by 7-1/2 inches

high at the front, and 5 inches high at the rear. Four rubber feet, 5/8 inches high are attached to the bottom of the console

and a microphone hanger bracket is attached on the right side. All necessary wiring passes through a cutout in the rear of

the chassis. A front view of the console is shown in figure 1-1. The numbered callouts locate the various modules

mounted on the front panel. The list below identifies the modules numbered in figure 1-1.

Microphone amplifier/lamp brightener module assembly

Recorder-monitor module PL-1455/FRC

Volume control module assembly

Audio unit assembly

Selector Module, Radio Channel SA-2328/FRC

Blank panel assembly

Selector unit assembly

Headset/microphone jack panel assembly

Table top console assembly

1-6. DESCRIPTION OF MAJOR COMPONENTS

What follows is a brief functional description of the major assemblies within the system.

a. Microphone Amplifier/Lamp Brightness Assembly. This assembly is mounted on the audio unit assembly. The

audio signal inputs from the

1-2

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