Magnum type satellite, built by TRW. Carried a 76 m diameter antenna.
This type of satellite (SIGINT) has seen its performance increase with the
diameter of the receiving antenna. Thus the Canyon satellites (1968-72) had 10
m antennas, the Rhyolite / Aquacade (1973-78) and the Jumpseat (1973-78) 18 m,
the Vortex
/ Chalet (1978-89) 38 m and the Magnum / Orion 76 m.
Ref: #15 - update: 27.10.04