Chapter 1. INTRODUCTION - TM-11-5820-489-200007

TM 11-5820-489-20

TO 31R4-2GRA6-32

CHAPTER 1

INTRODUCTION

Section L GENERAL INFORMATION

Type of Manual: Organizational

Maintenance.

Model Number and Equipment Name: Control Group AN/GRA-6.

Purpose of Equipment: Provides means for controlling and operating a radio set using one or

two receiver-transmitters or amplifiers of the push-to-talk type. Also provides means for local con-

trol of a radio set through a continuous dc circuit.

The Control Group can also be used for two-way telephone communication and ringing be-

tween remote and local control operators.

NOTE

Information in this manual about the radio sets used with the Control Group

is general. For more specific information refer to the technical manual for

the particular set used.

1-2. MAINTENANCE FORMS, RECORDS, AND REPORTS

Department of the Army forms and procedures used for equipment maintenance will be those prescribed by TM

38-750, The Army Maintenance Management System (TAMMS). Air Force personnel will use AFR 66-1 for

maintenance reporting and TO-00-35D54 for unsatisfactory equipment reporting.

1-3. DESTRUCTION OF ARMY MATERIEL TO PREVENT ENEMY USE

Refer to TM 750-244-2.

1-4. PREPARATION FOR STORAGE OR SHIPMENT

Procedures for storage and shipment are described in Chapter 2, Section VI of this manual.

1-5. NOMENCLATURE CROSS-REFERENCE LIST

NOTE

Official nomenclature must be used when filling out report forms or looking

up technical manuals. Common names will be used when the major com-

ponents of the Control Group are mentioned in this manual.

1-1