Chapter 1. INTRODUCTION - TM-11-5820-882-230009

CHAPTER 1

INTRODUCTION

Section I. GENERAL INFORMATION

1-4. Preparation for Storage or Shipment

1-1.

Scope

This manual describes Radio Set AN/PRC-68 (fig. 1-1)

Refer to Chapter 2, section VI for administrative

and provides instructions for organizational and direct

storage instructions.

support maintenance. Maintenance allocation chart

1-5. Reporting Equipment Improvement

(MAC) is included in appendix B.

Recommendations (EIR)

1-2. Maintenance Forms, Records, and

EIR can and must be submitted by anyone who is aware

Reports

of an unsatisfactory condition with the equipment

Department of the Army forms and procedures used for

design or use. It is not necessary to show a new design or

equipment maintenance will be those prescribed by TM

list a better way to perform a procedure, just simply tell

38-750. The Army Maintenance Management System.

why the design is unfavorable or why a procedure is dif-

Marine Corps units should refer to the current edition

ficult. EIR maybe submitted on standard Form (SF) 368

of TM 4700-15/1.

(Quality Deficiency Report). Mail directly to Comman-

1-3. Destruction of Army Materiel to Pre-

er, US Army Communications - Electronics

vent Enemy Use

ATTN: DRSEL-ME- MQ, Fort

Comnand,

Monmouth, NJ 07703. Marine Corps units mail to Com-

Demolition and destruction of electronic equipment will

manding Gereral, Marine Corps Logistics Base (P840),

be under the direction of the commander and in accor-

Albany, GA 31704. A reply will be furnished to you.

dance with TM 750-244-2.

Section II. EQUIPMENT DESCRIPTION AND DATA

1-6. Equipment Characteristics, Capa-

1-7. Location and Description of Major

bilities, and Features

Components

Radio Set AN/PRC-68 (radio set) is a hand-held

Figure 1-2 shows the major components of the radio

receiver-transmitter that provides ground-to-ground

set. The unit consists of: the rt unit, which contains the

voice communications in the 30 megahertz (MHz) to 79.

eight modules and all necessary operating controls and

95 MHz band. The unit is capable of secure speech

connectors; the module cover, held by two captive

operation when it is used with the secure voice module

screws to the chassis frame, which also holds the fre-

(svm). The radio set can be used with a short or long

quency changing and alignment tool; the battery, which

antenna, with a standard military handset such as H-

snaps onto mating connectors on chassis frame; the bat-

138/U, H-189/U or H-250/U, or with its built-in speak-

tery case, held on by two latches; and the short antenna.

er-microphone.

1-8. Equipment Data

GENERAL

Long antenna ------------------------------------------ 1 mile ( 1.6 Kilo-

Frequency -------------------------------------------------30.00 MHz--79.95

meters)

MHz

Operating temperature range ------------------------- - 40F to + 159F

Available

channels--------------------------------------1000

(-40C to +

Channel spacing

-----------------------------------------50 kHz

65C)

Preset channels-------------------------------------------10

Weight (including battery and antenna,

Preset channel spacing----------------------------------200 kHz

no headset)---------------------------------------------- 40oz. (1.30 kg)

Modulation ------------------------------------------

frequency modula-

Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . 8.35 in (212.0 mm)

tion (fro)

x 3.80 in (96.0

Range

mm)

Short antenna -----------------------------------------330 yards (300

x 1.52 in (38.6

meters)

mm)

Change 1 1-1