Maintenance Forms, Records, and Reports

TM 11-5820-518-20

1-2. Consolidated Index of Army Publications

and Blank Forms

Jersey 07703. In either case, a reply will be

furnished to you.

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

determine whether there are new editions,

changes or additional publications pertaining to

1-3.2. Reporting Equipment Improvement

the equipment.

Recommendations (ElR)

If your Radio Set needs improvement, let us

1-3. Maintenance Forms, Records, and Reports

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

a. Reports of Maintenance and Unsatisfactory

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

Equipment. Department of the Army forms and

about your equipment. Let us know why you

don't like the design. Put it on an SF 368

procedures used for equipment maintenance will

be those prescribed by TM 38-750, The Army

(Quality Deficiency Report). Mail it to Com-

Maintenance Management System.

mander, US Army Communications-Electronics

Command a n d F o r t M o n m o u t h , A T T N :

b. Report of Packaging and Handling Defi-

DRSEL-ME-MP, Fort Monmouth, New Jersey

ciencies. Fill out and forward SF 364 (Report of

07703. We'll send you a reply.

Discrepancy (ROD)) as prescribed in AR 735-

11-2/DLAR 4140.55/NAVMATINST 4355.73A/

AFR 400-54/MCO 4430.3F.

1-3.3. Administrative Storage

c. Discrepancy in Shipment Report (DISREP)

Administrative storage of equipment issued to

(SF 361). Fill out and forward Discrepancy in

and used by Army activities will have preventive

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

maintenance performed in accordance with the

scribed in AR 55-38/NAVSUPINST 461033C/

PMCS charts before storing. When removing the

AFR 75-18/MCO P4610.19D DLAR 4500.15.

equipment from administrative storage the

PMCS should be performed to assure operational

1-3.1. Reporting Errors and Recommending

readiness. Disassembly and repacking of equip-

Improvements

ment for shipment or `limited storage are covered

You can help improve this manual. If you find

in TM 740-90-1.

any mistakes or if you know of a way to im-

prove the procedures, please let us know. Mail

1-3.4. Destruction of Army Electronics Materiel

your letter or DA Form 2028 (Recommended

Destruction of Army electronics materiel to pre-

Changes to Publications and Blank Forms) direct

vent enemy use shall be in accordance with TM

to: Commander, US Army Communications-

750-244-2.

Electronics Command and Fort Monmouth,

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

Section II. DESCRIPTION AND DATA

aircraft and surface ships when such installations

1-4. Purpose and Use

are properly equipped with similar uhf communi-

(figs. 1-1 and 1-2)

cations equipment. Transmission and reception are

a. Purpose. Radio Sets AN/ARC-51X and AN/

conducted on the same frequency with the use of

ARC-51BX are airborne radio sets which provide

a common antenna. Also, a guard receiver (con-

amplitude-modulated (am) voice communication

tained within Radio Receiver-Transmitter RT-

within the ultrahigh frequency (uhf) band. The

702/ARC-51X of Radio Set AN/ARC-51X; and Radio

AN/ARC-51X operates from 225 megacycle (me)

Receiver-Transmitter RT-742(*)/ARC-51BX of

to 399.9 mc, and the AN/ARC-51BX operates

Radio Set AN/ARC-51BX) can be used to monitor

from 225 mc to 399.95 mc.

a fixed-frequency guard channel. The AN/ARC-

b. Use. Radio Sets AN/ARC-51X and AN/ARC

51 and the AN/ARC-51BX are also used with air-

51BX are used for two-way radio communication

craft automatic direction finding (adf) equipment

between aircraft in flight, aircraft and ground, or

such as Direction Finder AN/ARA-25.

Change 5

1-2