Category: SSIC 02000 Telecommunications
Updated: 06/24/96
Number: MCO 2100.3A

WASHINGTON, DC 20380-0001
MCO 2100.3A
26 Jun 89


From: Commandant of the Marine Corps
To: Distribution List


Ref: (a) MCO 2100.4A
(b) MCO P4400.82F
(c) MCO P4790.2B
(d) UM 4400-125
(e) ASTM-D3951-88 (NOTAL)
(f) MIL-STD-17555/MIL-STD-129K

Encl: (1) Advance Logistics Information and Allowances for

the Radio Set, AN/PSC-3

1. Purpose. To provide advance logistics information to the
Fleet Marine Force (FMF) commanders regarding the support and
placing in service of the Radio Set, AN/PSC-3 (hereinafter
referred to as the AN/PSC-3).

2. Cancellation. MCO 2100.3.

3. Background

a. Required Operational Capability (ROC) No. CCC 1.13,
issued on 17 June 1976, describes a need for manpack satellite
communications terminals to satisfy low echelon highly mobile
users with beyond line-of-sight (LOS) communications. The
general technical and operational requirements led the Marine
Corps to participate in the U.S. Army's AN/PSC-1 program.
Accepting Marine Corps comments for action, the Army made
changes to incorporate additional data rates and modulation
changes to enhance that radio set's interoperability with other
ultra high frequency satellite communications radio sets and
with secure voice equipment. The AN/PSC-1 was then
redesignated the AN/PSC-3.

b. The U.S. Army Satellite Communications Agency (SATCOMA)
has overall responsibility for the development and procurement
of the AN/PSC-3. The Army awarded a production contract to the
Cincinnati Electronics Corporation for the AN/PSC-3, and
exercised a contract option in January 1985 to provide and
initial 61 AN/PSC-3's to the Marine Corps.

4. General Information

a. New Item Being Introduced to the Field. The AN/PSC-3
is a battery-operated, portable, communications terminal which
contains the RT-1402A/G, Receiver-Transmitter. It provides
two-way communications in the frequency range of 226 MHz to 400
MHz in both satellite and LOS modes of operation. The terminal
uses a Low Gain Omnidirectional Whip Antenna, AS-3566/G, for LOS
operation and reception of a satellite alert ringing (i.e.,
paging) signal. A Medium Gain Antenna, AS-3567/G, is used for
satellite communications. LOS communication may be accomplished
while in motion. Satellite communications requires that the
terminal be stationary with the AS-3567/G placed on the ground
and correctly oriented for receipt of signals.

(1) The AN/PSC-3 provides either satellite or LOS
communications in the following modes: at 300 and 1,200 bits
per second (bps) in burst mode using biphase shift keying
(BPSK); 300 and 1,200 bps synchronous data using differential
coding binary phase shift keying (DBPSK); 2,400 bps synchronous
differential coding shaped binary phase shift keying (DSBPSK);
2,400 bps shaped binary phase shift keying (SBPSK); 16 kbps
frequency modulation-frequency shift keying (FM-FSK) for
TSEC/KY-57 interface and frequency modulation voice. The
Digital Communications Terminal (DCT), AN/PSC-2, will be used
in conjunction with the AN/PSC-3 for 300 and 1,200 bps burst
communications. Secure voice communications will be provided
by using the TSEC/KY-57. The TSEC/KY-57 will eventually be
replaced by the advanced narrowband digital voice terminal
(ANDVT/Minterm, KY-99), when fielded.

(2) Transmit power output for the AN/PSC-3 is 35 watts
(maximum) in SAT and 2 watts (maximum) in LOS modes of operation.
The terminal is powered by two BB-590/U (National Stock Number
(NSN) 5614-01-063-3918) rechargeable NiCad batteries or two
BA-5590/U (NSN 6135-01-036-3495) lithium organic-electrolyte
batteries. Although the AN/PSC-3 is intended for use as a
remote, highly mobile terminal, ac to dc power supplies are
provided for a small percentage of AN/PSC-3's at each CommBn as
a noncombat-essential, cost saving convenience.

(3) The backpack with which to carry the AN/PSC-3
shall be supplied by the using unit. For example, it may
consist of the standard ALICE pack or the carrying harness used
for the AN/PRC-77 (the ST-138/PRC-25 or equivalent). A special
purpose connector for AN/PSC-3 to AN/PSC-2 interface is part of
the SL-3 components list for the AN/PSC-3.

b. Replaced Item. None.


c. Concept of Employment. Planning for use of the AN/PSC-3
is unique in that it requires allocation of scarce, Joint Chiefs
of Staff (JCS) controlled resources (communications satellite
power and bandwidth) to be useful. Only a limited number are
being procured, primarily for use by highly mobile operational
forces responding to requirements of unified commanders in
chief. AN/PSC-3's may be used in conjunction with the
AN/MRC-140 Radio Set/net control station, with up to 15
terminals per net. The AN/MRC-140 consists of the AN/VSC-7
Radio Set mounted in the M998 High Mobility Multi-Wheeled
Vehicle (HMMWV). Reference (a) pertains.

d. Training. The U.S. Army Communications and Electronic
Command (CECOM), Fort Monmouth, New Jersey, has conducted new
equipment training (NET) courses on AN/PSC-3 operation and
maintenance. Personnel who participated in NET will form the
nucleus for the conduct of supervised on-the-job training (OJT)
within their respective units. Correspondence course
instruction on the PSC-3 will be included in MCI Course 25.32
(HF/UHF Communication Equipment), and will be available for
student enrollment by January 1990.

(1) Personnel. Operators will possess Military
Occupational Specialty (MOS) 2531 (Field Radio Operator).
Maintenance personnel will possess MOS 2841 (Ground Radio
Repairer). Maintenance of the AN/PSC-3 is similar to that of a
UHF radio set.

(2) Training Support. Follow-on operation and
maintenance (first through fourth echelons) training will be
supervised OJT using appropriate technical manuals (TM's).
Joint services TM's have been prepared and are identified in
the enclosure.

e. Test Equipment. Items of test equipment required to
support the AN/PSC-3 are listed in the enclosure.

f. Repair Parts Support. Quantities of repair parts to
support the AN/PSC-3 during and after initial issue have been
procured by the Marine Corps Logistics Base (MCLB), Albany.
Project codes are B9Z (for II MEF) and B9F (for I/III MEF's)
for equipment issued in FY86 and C1J (all MEF's) for equipment
issued in FY87.

g. Maintenance Support. The communications battalion is
authorized first through fourth echelons of maintenance on the
AN/PSC-3. Radio battalion and ANGLICO are authorized first and
second echelon maintenance. The communications battalion will
provide third and fourth echelon maintenance for the radio
battalion and ANGLICO. Depot maintenance support will be
obtained under a Depot Maintenance Interservice Support
Agreement (DMISA) with the U.S. Army.


(1) Organizational Maintenance (First and Second
Echelons). Organizational level maintenance will consist of
normal operator cleaning, inspection, battery and fuse
replacement, and operational checks.

(2) Intermediate Maintenance (Third and Fourth
Echelons). Intermediate level maintenance will consist of
fault isolation and replacement of modules/subassemblies and
printed circuit boards. Piece parts, such as lamps, indicators,
and discrete components mounted on the chassis may also be
replaced. The force service support group will hold a
maintenance float to facilitate repair of the equipment. The
using unit will submit a recoverable item report for items
beyond the using unit repair capability and request disposition
instructions from MCLB Albany per reference (b). MCLB Albany
will instruct the unit to ship the equipment to the designated
Army depot repair facility (if reparable) and obligate funds for
the repair. Maintenance reporting shall be per reference (c).
Stockage of maintenance float assets shall be per reference (d).

(3) Depot Maintenance. Depot support will be provided
by the Army Depot, Tobyhanna, Pennsylvania. the DMISA will be
cited to obtain depot maintenance support for Marine Corps

h. Combat active replacement factors have been assigned
for the AN/PSC-3, and are listed in the enclosure.

i. Retrofit and Modification Kits. There are no retrofit
or modification kits required to support this system.

j. Technical Representatives. Contractor technical
representatives will not be required for this system.

k. Special Preservation and Packaging Requirements.
Preservation and packaging will be performed per reference (e)
for domestic shipments, limited storage, or immediate issue to
using units, or reference (f) for overseas surface shipments,
long term storage, or indeterminate issue to using units.

l. Transportation and Handling. The AN/PSC-3 may be
transported by land, sea, or air. The BA-5590/U lithium
batteries should be removed from the AN/PSC-3 when in air

5. Action

a. The AN/PSC-3 is controlled item and shall be reported
by using units per reference (b).

b. The AN/PSC-3 is a candidate for MARES readiness


6. Reserve Applicability. This Order is applicable to the
Marine Corps Reserve.

By direction

DISTRIBUTION: 7230011/7256090/7611006/7635004/7713012/7801006
(3) 1025001/4005/4159/4160/5138005, 006. 013/
8145004, 005 (2) 8360001 (1)

Copy to: 7000045 (10)
7000041, 062, 106, 142, 144, 148, 160, 167/8145001



1. Logistics Data

Item name: Radio Set, AN/PSC-3

TAM No.: A0917 VII G

NSN: 5820-01-145-4943

ID No.: 09924A

Unit cost: $24,000

Unit of issue: ea

Stores account code (SAC): 3

Length: 9.63 in

Width: 13.0 in

Height: 4.0 in

Weight: 14.75 lb

Square Storage: 125.19 ft(2)

Cube: .78 ft(3)

Replacement factors: European intensive, 0.800; European
sustained, 0.0400; worldwide intentive,
0.0533; worldwide sustained, 0.0266
mobilization training, 0.0500;
peacetime training, 0.0100

2. Support and Test Equipment (STE). The Army has identified
the STE for support of the AN/PSC-3, some of which is not
available in the Marine Corps. The following lists will,
therefore, contain some substitutions for Army-peculiar

a. General purpose test equipment.

(1) Digital Multimeter, TAMCN H2336, vice AN/USM-436,
specified by the Army.

(2) RF Power Test Set, AN/URM-203, TAMCN A3007, vice
AN/URM-120A specified by the Army.


(3) Radio test Set, AN/GRM-114A, TAMCN A2930.

(4) Power Supply, PP-2953, TAMCN H2357, vice PP-2309C,
specified by the Army.

(5) Electronic Counter, HP-5328, TAMCN A0359, vice
AN/USM-459 specified by the Army.

(6) Serial Data Generator, HP-8018A, TAMCN A7070.

(7) Function Generator, SG-1152, TAMCN H2246, vice
SG-1133 specified by the Army.

(8) Tool Kit, MK-2569/U, TAMCN H2486.

(9) Data Error Analyzer, HP-1645A
(NSN 6625-00-487-0662, TAMCN A7015). This item is also known as
an AN/FSQ-131 or AN/USD-9A.

(10) Power Supply, HP-6218B (NSN 6130-01-291-9373,
TAMCN H2362). Quantity of 2 is required.

b. General purpose Non-T/E SAC-1 items to be requisitioned
by the using units.

(1) 51.5-Ohm Termination (Dummy Load), NSN
6625-00-177-1639, Source of Supply (SOS) B16.

(2) 30-dB Power Pad, 50-watt (Attenuator),
NSN 5985-01-145-3237, SOS S9E (Defense Logistics Agency (DLA)

(3) Cable Assembly, BNC/BNC Coax (CG-4096/U,
4ft-2in), NSN 5995-00-889-0590, SOS, S9G, DLA, Philadelphia).
Quantity of 5 is required.

c. Special purpose non-T/E SAC-1 items to be requisitioned
by the using units (SOS is B16, CECOM).

(1) Cable Assembly, Radio (BNC/SMB Coax),
NSN 6625-01-192-9241, unit price (U/P) $130.

(2) Interface Box, X-Mode, NSN 6625-01-192-9231, U/P

(3) Test Box, Phase Mod, NSN 6625-01-192-9229, U/P

(4) Test Box, Voice Data and RXMT, NSN 6625-01-192-9232,
U/P $528.


(5) Cable Assembly (Dual Banana/Banana Power),
NSN 6625-01-192-9243, U/P $102.58. Quantity of 2 is required.

(6) Cable Assembly (RT Unit Power), NSN
6625-01-192-9246, station, U/P $142.40.

(7) Cable Assembly (Phone Plug/BNC Coax),
NSN 6625-01-192-9245, U/P $106.42.

3. Publications. Joint service publications (Army as lead
service) have been prepared for operation and maintenance
support of the AN/PSC-3 and AS-3567 antenna. All publications
with assigned publication control numbers (PCN's) are listed
in the SL-1-2 and are available for requisitioning.

Marine Corps
Title Publication No. PCN

Operator's Manual, AN/PSC-3 TM 5895-10/1 182 058951 00

Organizational Maintenance
Manual, AN/PSC-3 TM 5895-20/3 182 058953 00

Organizational Maintenance
Repair Parts and Special Tools
List (RPSTL), AN/PSC-3 TM 5895-20P/6 182 058956 00

Direct and General Support
(DS/GS) Maintenance Manual,
AN/PSC-3 TM 5895-34/9 182 058959 00

DS/GS Maintenance RPSTL,
AN/PSC-3 TM 5895-34P/12 182-058962 00

DS/GS Maintenance Manual,
RT-1402/G and RT-1402A/G TM 5895-34/11 182 058961 00

Organizational Maintenance
RPSTL, RT-1402/G and
RT-1402A/G TM 5895-20P/8 182 058958 00

DS/GS RPSTL, RT-1402/G and
RT-1402A/G TM 5895-34P/14 182 058964 00

Operator and Organizational
Maintenance Manual, Antenna,
AS-3567/G TM 09924A-13/1 TBD

Organizational and Direct
Support RPSTL, Antenna,
AS-3567/G TM 09924A-23P/2 TBD


4. Allowances

T/E No. Unit Qty.

B-4032 CommCo, BrigServSupGroup-1 6

M-4855 1stANGLICO, FMFPac 6

N-4014 CommSptCo, CommBn, 1stMEF 30

N-4024 CommSptCo, CommBn, 2dMEF 24

N-4034 CommSptCo, CommBn, 3dMEF 24

N-4042 CommCo, CommBn, 4thMEF 24

N-4737 H&SCo, RadioBn, FMF 9

N-4854 ANGLICO, FMFLant 6

(MF) Depot Maintenance Float, MCLB
Barstow 3

(MF) Depot Maintenance Float,
MCLB Albany 3

5. Components List. The AN/PSC-3, as available to the Marine
Corps, is comprised of the following:

a. Receiver-Transmitter, Radio, RT-1402A/G.

b. Battery Box, CY-8006/PSC-3.

c. Low Gain Antenna, AS-3566/G.

d. Medium Gain Antenna, AS-3567/G.

e. Handset, H-250/U.

f. Interface Connector, AN/PSC-3 to AN/PSC-2.