CHAPTER 1. INTRODUCTION - TM-11-5820-498-350011

TM 11--5820-498-35

CHAPTER 1

INTRODUCTION

1-1. Scope

a. Operation of the radio sets (which include the

OA-3633(*)/GRC), with and without crew-member

This manual covers direct support (DS), general sup-

control boxes in the radio-intercom system, and the

port (GS), and depot maintenance of Amplifier-Power

operator's and organizational maintenance of the radio

Supply Group OA-3633(*)/GRC, including detailed cir-

sets is covered in TM 11-5820-498- 12.

cuit functioning, troubleshooting, testing, and repair

procedures. This manual also covers circuit functioning

b. Following is a list of publications covering circuit

of Radio Sets AN/VRC-53, AN/VRC-64, AN/GRC-

functioning, maintenance, and repair parts for various

125, and AN/GRC-160.

components of the radio sets covered in this manual.

NOTE

( O A - 3 6 3 3 ( * ) / G R C represents OA-

3633/GRC and OA-3633A/GRC (para

14).

Technical manual

Coverage

Item

Operation and organizational maintenance.

TM 11-5820-498-12. . . . . . . . . . . . . . . . . . .

AN/VRC-53, AN/VRC-64, AN/GRC-125, and

AN/GRC-160.

TM 11-5820-498-35 . . . . . . . . . . . . . . . . . . . DS/GS maintenance

RT-505/PRC-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TM 11-5820-398-12 . . . . . . . . . . . . . . . . . . . Operation and organizational maintenance repair

parts.

TM 11-5820-398-35 . . . . . . . . . . . . . . . . . . . Circuit functioning and DS, GS, and depot

maintenance.

TM 11-5820-497-34P. . . . . . . . . . . . . . . . . . DS, GS, and depot maintenance repair parts.

TM 11-6625-514-12 . . . . . . . . . . . . . . . . . . . DS maintenance using Test Set, Electronic Circuit,

Plug-In Unit AN/GRM-56, -55A, -55B, or -55C to

locate faulty modules.

RT-841/PRC-77 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TM 11-5820-667 -12. . . . . . .

Organizational maintenance repair parts.

TM 11-5820-667-35. . . . . . . . . . . . . . . . . . . Circuit functioning and DS, GS, and depot mainten-

ance, including troubleshooting for defective

modules.

TM 11-5820-667-34P. . . . . . . . . . . . . . . . . . DS, GS, and depot maintenance repair parts.

OA-3633(*)/GRC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TM 11-5820-498-12 . . . . . . . . . . . . . . . . . . . Organizational maintenance.

TM 11-5820-498-20P. . . . . . . . . . . . . . . . . .Organizational, maintenance repair parts.

Operator, organizational, DS, GS, and depot maim

MT-1029/VRC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TM 11-5820-401-12 and

tenance, and repair parts.

TM 11-5820-401-35-9

AT-912/VRC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TM 11-5820-401-12 . . . . . . . . . . . . . . . . . . . Operator, organizational, DS, GS, and depot main-

tenance, and repair parts.

AS-1729/VRC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TM 11-5985-262-15 . . . . . . . . . . . . . . . . . . . Operator, organizational, DS, GS, and depot*

tenance, circuit functioning, and repair parts.

H-138/U and H-138A/U . . . . . . . . . . . . . . . . . . . . . . . TM 11-5965-257-15 . . . . . . . . . . . . . . . . All maintenance levels and repair parts.

H-189/GR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TM 11-5965-280-15 . . . . . . . . . . . . . . . . . . . All maintenance levels and repair parts.

ment used with the radio sets covered in this manual.

c. Following are publications covering various audio

a c c e s s o r i e s and crewmember radio-intercom equip-

Coverage

Publication

Item

Headset-Microphone H-161/U and H-161/U. . . . . . TM 11-5965-262-13 . . . . . . . . . . . . . . . . . . . All maintenance and repair parts.

Headset Microphone Kit . . . . . . . . . . . . . . . . . . . . . . TM 11-5965-282-15. . . . . . . . . . . . . . . . . . . All maintenance and repair parts.

MK-1039/G (also used in CVC Helmet).

Intercom equipment:. . . . . . . . . . . . . . . . . . . . . . . . . . TM 11-5830-340-12

TM 11-5820-401-30-4,

Amplifier, Audio Frequency

TM 11-5820-401-35-6, -7, and -8

AM-1780/VRC, and Controls,

Intercommunication Set

C-2296/VRC, C-2297/VRC, and C-2298/VRC.

Interunit cabling, mounting. . . . . . . . . . . . . . . . . . . SB 11-131 . . . . . . . . . . . . . . . . . . . . . . . . . . . Items comprising installation kit, including Federal

stock numbers for kit parts.

hardware, audio accessories, etc.; provided in

installation kits as required for particular vehicle

installation.

Instructions for installing particular radio

TM 11-2300 series; refer to DA Pam

Head, Mic Kit MK-1697/G (in new CVC

and radio-Intercom configuration.

310-4. TM 11-5965-286-14

Helmet).

Change 4

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