Chapter 1. INTRODUCTION - TM-11-6625-847-120005

TM 11-6625-847-12

CHAPTER 1

INTRODUCTION

Section I. GENERAL

b. Report of Packaging and Handling Deficiencies.

1-1.

Scope of Manual

Fill out and forward DD Form 6 (Report of Packaging

This manual describes Simulator, Radio Frequency SM-

and Handling Deficiencies) as prescribed in AR 700-58

442A/GRC (fig.

1-1) and covers its installation,

and DSAR 4145.8.

operation, and maintenance. It includes operation,

c. Discrepancy in Shipment Report (DISREP) (SF

cleaning, and inspection of the equipment, and

replacement of parts available to the operator and

361). Fill out and forward Discrepancy in Shipment

organizational maintenance personnel.

Report (DISREP) (SF 361) as prescribed in AR 5548

and DSAR 4500.15.

1-2.

Indexes of Publications

d. Administrative Storage. The procedures for

a. DA Pam 310-4. Refer to the latest issue of DA

administrative storage are outlined in TM 740-90-1;

however, the exact procedure in repacking for limited

Pam 3104 to determine whether there are new editions,

storage depends on the materials available and the

changes, or additional publications pertaining to the

conditions under which the equipment is to be stored.

equipment.

b. DA Pam 310-7. Refer to DA Pam 310-7 to

1-3.1. Reporting of Errors

determine whether there are modification work orders

(MWO's) pertaining to the equipment.

The

reporting

errors,

omissions,

and

recommendations for improving this publication by the

individual user is encouraged. Reports should be

1-3.

Forms and Records

submitted on DA Form 2028, (Recommended Changes

a. Reports of Maintenance and Unsatisfactory

to Publications, and Blank Forms), and forwarded direct

Equipment. Maintenance forms, records, and reports

to Commander, US Army Electronics Command, ATTN:

which are to be used by maintenance personnel at all

DRSEL-MAQ, Fort Monmouth, NJ 07703.

maintenance levels are listed in and prescribed by TM

38-750.

Section II. DESCRIPTION AND DATA

1-4.

Purpose and Use

1-5.

Technical Characteristics

The SM-442A/GRC (fig. 1-1) serves as a simulator that

Primary power requirements 27 2 volts dc at 10

provides stimulus controls, mechanical coupling,

amperes min. (from external power supply).

resistive power loads, and direct current (dc) and

Power consumption

400 watts, max.

alternating current (ac) power which are necessary to

Transportability

Air, rail, or vehicular (intact in

conduct a performance test of Radio Set AN/GRC-106

shipping crate).

with the use of standard external test equipment. When

Cabling requirements Input power cable (W15, W16,

the SM442A/GRC is used to test the modules of

or W17) plus cables specified

Receiver-Transmitter, Radio RT-662/GRC or Amplifier,

for a particular test. Cables

Radio Frequency AM-3349/GRC-106, it supplies the

secured from supplied cable kit.

stimulus inputs and controls which are normally supplied

Dc output voltages

-30 volts at 3 ma.

by the remaining unit. When the SM442A/GRC is used

+ 20 .volts at 500 ma.

to test the modules of the AN/GRC-106, it supplies the

+27 volts at 10 amp., max.

stimulus, the mechanical coupling, the power, the

+ 125 volts at 50 ma.

switching information, and loads which are normally

+200 volts at 158 ma.

supplied by the parent unit.

Ac output voltages

6.3 volts at 0.75 amp.

Input frequencies

50 cps to 1 kc.

Output frequencies

1.750000 mc + 100 cps,

1.751500 mc + 100 cps,

1.752500 mc + 100 cps.

Change 2 1-1