Chapter 1. INTRODUCTION - TM-11-5831-201-200009

TM 11-5831-201-20

CHAPTER 1

INTRODUCTION

Section I. GENERAL

1-3.1. Reporting Errors and Recommending

1-1. Scope

Improvements

a. This manual describes Control, Intercom-

You can help improve this manual. If you find any

munications Set C-1611D/AIC (Fig. 1-1), and pro-

mistakes or if you know of a way to improve the

vides instructions for operation and organizational

procedures, please let us know. Mail your letter or

maintenance. It includes instructions for cleaning

DA Form 2028 (Recommended Changes to Publi-

and inspection of the equipment, preventive main-

cations and Blank Forms) direct to: Commander,

tenance checks and services, and replacement of

US Army Communications-Electronics Command

parts available to the organizational maintenance

DRSEL-ME-MP,

and Fort Monmouth, ATTN:

repairman.

Fort Monmouth, New Jersey 07703. In either

b. This manual also describes Discriminator, Dis-

case, a reply will be furnished direct to you.

crete Signal MD-736/A used as auxiliary equipment

with the C-1611D/AIC. Description and mainte-

nance instructions for the Discriminator, Discrete

1-3.2. Reporting Equipment Improvement

Signal MD-736/A are found in chapter 4.

Recommendations (EIR)

c. Several models of Control, Intercommunica-

If your intercommunication control or discrete

tion Set C-161lD/AIC have been manufactured.

signal discriminator needs improvement, let us

The C-161lD/AIC is referred to throughout this

know. Send us an EIR. You, the user, are the

manual as the control set.

only one who can tell us what you don't like about

1-2. Consolidated Index of Army Publications and

your equipment. Let us know why you don't like

Blank Forms

the design. Put it on an SF 368 (Quality Deficien-

cy Report). Mail it to Commander, US Army

Refer to the latest issue of DA Pam 310-1 to deter-

mine whether there are new editions, changes or

Communications-Electronics Command and Fort

Monmouth, ATTN: DRSEL-ME-MP, Fort Mon-

additional publications pertaining to the equip-

mouth, New Jersey 07703. We'll send you a reply.

ment.

1-3. Maintenance Forms, Records, and Reports

1-3.3. Administrative Storage

a. Reports of Maintenance and Unsatisfactory

Administrative Storage of Equipment issued to and

Equipment. Department of the Army forms and

used by Army activities will have preventive main-

tenance performed in accordance with the PMCS

procedures used for equipment maintenance will

be those prescribed by TM 38-750, The Army

charts before storing. When removing the equip-

ment from administrative storage the PMCS should

Maintenance Management System.

b. Report of Packaging and Handling Defi-

be performed to assure operational readiness. Dis-

ciencies. Fill out and forward SF 364 (Report of

assembly and repacking of equipment for shipment

or limited storage are covered in chapter 5 and

Discrepancy (ROD)) as prescribed in AR 735-11-2/

DLAR 4140.55/NAVMATINST 4355.73A/AFR

TM 740-90-1.

400-54/MCO 4430.3F.

1-3.4. Destruction of Army Electronics Materiel

c. Discrepancy in Shipment Report (DISREP)

Destruction of Army electronics materiel to pre-

(SF 361). Fill out and forward Discrepancy in

vent enemy use shall be in accordance with TM

Shipment Report (DISREP) (SF 361) as pre-

740-244-2.

scribed in AR 55-38/NAVSUPINST 4610.33C/

A F R 75-18/MCO P4610.19D/DLAR 4500.15.

Section II. DESCRIPTION AND DATA

1-4. Use of Term Hertz

second (cps). The chart below provides the common

equivalents of the unit/quantity terms and the list of

The National Bureau of Standards has officially

approved abbreviations used throughout the manual.

adopted the term hertz (Hz) to replace cycles per

New abbrer

Oldabbrer

Old term

Unit/Quantity

New term

Frequency

Cycles per second

cps

hertz

103 cycles per second

Kilocycles per second

kHz

kilohertz

106 cycles per second

MHz

megahertz

Megacycles per second

GHz

109 cycles per second

gigahertz

Gigacycles per second

Change 2

1-1