AN/TSC-93

The AN/TSC-93 is a sheltered, 4.5mbps terminal which supplies voice, data, and teletype communications to the ground, air, and logistics elements of a landing force. The terminal operates in conjunction with the AN/TSC-85 to enable the user to transmit or receive channels of voice communications and order wire. It also digitally interfaces with the externally multiplexed TRI-TAC group. The inter-leaver allows for substitution of 16/32 Kb/s of data in each of the voice channels. The AN/TSC-93 can operate with an organic AS-3036/TSC, AS-3036A/TSC, OE-361 (QRSA), AS-4429C (LAMDA) or AS-4429 (LHGXA) antenna. The AN/TSC-93D has CMA capability.

Motorola Satellite Communications

Motorola satellite communications are the forerunners of Iridium satellite communications or Iridium Satellite LLC as the company is formally known. The initial project was designed by Motorola. Now, Iridium uses Motorola handsets only though at one point of time, Iridium also used Kyocera handsets. Motorola satellite communications are primarily satellite phone services through the Iridium system. Satellite phones work on the principle of global connectivity even on water or in an aeroplane as instead of submarine communication cables it uses satellite communication.

Military Satellite Communications

 The first important landmark in military satellite communications (also known as milsatcom) and especially U.S. military satellite communication was when the U.S. army achieved radar contact with the moon. The navy began experiments using the moon as a reflector in 1954 and it became successful in establishing a communication link between Hawaii and Washington D.C. in 1959.
The first artificial military satellite Project SCORE (Signal Communication by Orbiting Relay Equipment) was launched in 1958 to show that an Atlas missile could be put into orbit. The secondary objective was to show how a communications repeater built into the missile functioned. Repeaters receive signals, amplify them and then retransmit them. Its transmissions included Eisenhower’s Christmas message. The next satellite was called Courier. The satellite was of a higher capacity and longer life than SCORE but it lasted only 17 days after the second launch in 1960. The next more advanced satellite was the Advent satellite in 1960 but it was cancelled in 1962.
Project West ford was the next big technological development. It used a copper wire communications reflector. No other satellites like this were launched again in the history of U.S. military satellite communications. With the cancellation of the Advent programme in 1962, a recommendation was made for another programme that would be operational instead of being experimental. The result was the Initial Defense Communication Satellite Program (IDCSP). The first IDCSP launch in military satellite communications was in 1966. Seven IDCSP satellites were launched in 1966 with additional groups of 3 to 8 satellites launched between 1967 and 1968. 28 satellites were launched into orbit, operating for periods of 1 to 10 years. The IDCSP satellites operated in orbits slightly below geostationary orbits.
In 1966, there was also an agreement between the United States of America and the United Kingdom on military satellite communications. It was the forerunner of the U.K. Skynet programme. In 1967, NATO used the IDCSP as part of the NATO I satellite system. Between 1967 and 1969, the Lincoln Experiment Satellites (LES) made by the Lincoln Laboratory were launched – the Lincoln 5 and 6. The Tactical Communication Satellite (Tacsat) was designed for operation with small land mobile, airborne, or shipborne tactical terminals. It was the forerunner of military satellite communications narrowband segment.