(U) The Army Terminal Upgrade and Replacement program is a Joint Chiefs of Staff (JCS) validated, Department of Defense (DoD) approved program designed to upgrade super-high frequency (SHF) heavy terminals (HT) and medium terminals (MT). The existing AN/FSC-78 and AN/FSC-79 heavy terminals, and the AN/GSC-39(V) medium terminals, are approaching their design life of 15 years, evident by their decreasing operational availability. The HT/MT modernization program is needed to extend the lives of the terminals an additional fifteen years while reducing O&M costs and providing many enhanced features.
(U) The Army Terminal Upgrade and Replacement program provides for the modification of in-service (MIS) equipment to upgrade the AN/FSC-78/79 Heavy Terminal (HT) and the AN/GSC-39 Medium Terminal (MT) satellite communications terminals. This program will provide all Defense Satellite Communications System (DSCS) strategic earth terminals with common electronics and logistics support. The terminal upgrade will extend the life of hte terminals for another fifteen years, improve the mean time between failure (MTBF), increase readiness, reduce traning and logistics support, conserve energy and improve maintainability.
(U) The AN/FSC-78 fixed-site terminal inlcudes a 60-foot antenna which provides up to 18 simultaneous transmit and 30 receive carriers for both voice and high data rate traffic.
(U) The AN/FSC-79 is a modified AN/FSC-78 used primarily by the Navy for transmissions only, since the terminal does not have a receiver. This terminal operates over FLSATCOM.
(U) The AN/GSC-39 has a 38-foot steerable antenna providing high quality intermodulation free SHF satellite communications. The terminal provides up to 18 transmit and 30 receive carriers.
|AN/FSC-78 Heavy Terminal||AN/FSC-78|
|DISA STEP||Defense Information Systems Agency (DISA) Standard Tactical Entry Point (STEP)|
|Lightwt Multi-band Sat Terminal||Lightweight Multi-band Satellite Terminal (LMST)|
|Single Channel Transponder Sys||Single Channel Transponder System (SCTS)|
|STAR-T||SHF Tri-Band Advanced Range-Extension Terminal (STAR-T)|
|Universal Modem System (UMS)||Universal Modem System (UMS)|
|SHF Ground Segment Terminals||Super High Frequency (SHF) Ground Segment Terminals|
|MILSATCOM||SPACE FORCE ENHANCEMENT: MILSATCOM|
(U) National Security Space Road Map Team, NSSA, Open Phone: (703) 808-6040, DSN 898-6040.
(U) 21 November 1997
(U) Road Map Production Date: 23 June 2001