AN/TSC-93A and AN/TSC-93B
Satellite Communications Terminals

The AN/TSC-93A and AN/TSC-93B terminals contain equipment to receive, transmit, and process medium and high capacity multiplexed voice, data, and teletypewriter circuits. AN/TSC-93B provides a capacity of 24 channels that can operate in a point to point mode or as a non-nodal terminal in a nodal network. These terminals are used as a communications link via satellite with the AN/TSC-85A, or another AN/TSC-93A.

Using encryption equipment, they will process secure and nonsecure traffic. The terminals are intended for point-to-point operation in tactical communications systems. They can simultaneously transmit and receive a single high data-rate carrier. The terminals include modulation and demodulation equipment and a specialized PCM signal processor. Digital interfaces are set up using external connections for an intercommunications set, field telephones, wideband 70 MHz, and CBR alarm. These terminals are used as a communications link via satellite with the AN/TSC-85A, or another AN/TSC-93A.

The Baseband Improvement Modification (BIM) is a directed program change by Joint Chiefs of Staff (JCS) to the Army Ground Mobile Forces (GMF) SHF program. This change increases and improves satellite efficiency and interoperability modes between Army (AN/TSC-85B, AN/TSC-93B) and Air Force (AN/TSC-100A, AN/TSC-94A) terminals. The terminals use spacecraft resources more efficiently while improving network management and control.

HISTORICAL BACKGROUND:

Jun 76 LRIP contract awarded to RCA Corporation (AN/TSC-85, AN/TSC-93).

Feb 79 Full Scale Production approved.

Sep 79 Production contract awarded to Harris Corporation.

Apr-Nov 85 First production unit delivered; First Article Test; First Unit Equipped; Initial Operational Capability.

Sep 86 BIM awarded (AN/TSC-85B, AN/TSC-93B).

Jul 92 BIM Complete.

May 94 HQDA Decision not to field AJCM.

Aug 94 Transition to Level III Management.

REQUIREMENTS DOCUMENT: TACSATCOM Qualitative Materiel Requirement approved 12 Nov 71.

TYPE CLASSIFICATION: LRIP terminals approved Apr 77; Standard approved Jul 85.

Technical Characteristics

Frequency Range:
Receive............... 7250 to 7750 MHz
Transmit............... 7900 to 8400 MHz
Power Output............... 500 W (nominal) at antenna
Single Channel Operation:
(Digital Voice)............... 16/32 kb/s
Multichannel Operation:
AN/TSC-93............... 6, 12, 24 channels
AN/TSC-93A............... 6, 12, 24, 18-96 channels (48 kb/s per channel at true multiplex data rate)
Power Requirements:
AN/TSC-93............... 115 V AC 10%, 50/60 Hz 5% single phase 1380 W (nominal)
AN/TSC-93A............... 115 V AC 10%, 50/60 Hz 5% 3-phase 5-wire, 5500 W (nominal)
Organic Power:
AN/TSC-93............... PU-619 (modified)
AN/TSC-93A............... 2 1/2 ton truck (two each)

GMF Satellite Communications Terminal AN/ TSC-93B

GMF Terminals Technical Characteristics


AN/TSC-93A Satellite Communications Terminal

AN/TSC-93A Satellite Communications Termial Curbside

Roadside AN/TSC-93A Satellite Communications Terminal

Curbside AN/TSC-93B(V)1 Satellite Communications Terminal

Roadside AN/TSC-93B(V)1 Satellite Communications Terminal
Curbside AN/TSC-93B(V)2 Satellite Communications Terminal

Roadside AN/TSC-93B(V)2 Satellite Communications Terminal

Sources and Resources

• FM 24-24 SIGNAL DATA REFERENCES: SIGNAL EQUIPMENT Section V. Multichannel Satellite Communications Terminals
• AN/TSC-93A and AN/TSC-93B Satellite Communications Terminal FM 24-24 SIGNAL DATA REFERENCES: SIGNAL EQUIPMENT
• PROVIDING CERTAIN COMMUNICATIONS IN AN UNCERTAIN WORLD Marine Corps News - 01 February 2000 -- The 26th Marine Expeditionary Unit's Army Navy/Tactical Satellite Communications Terminal-93B (AN/TSC-93) van, part of the Joint Task Force Enabler package, is the MEU's primary link to the world.