DSCS use preamplifiers behind parabolic antenna. preamp noise temperatures vary with size of
earth terminal. earth transmitters generate high power signals for transmission to satellite. high power, high
gain, highly directional overcome up link limitations. exciter/modulator and power amplifier. modulater accepts
baseband input, modulates IF carrier. exciter translates IF signal to up-link frequency, amplifies to level
required by klystron of power amplifier. AN/FSC-9 varies from 10 watts to 20 kilo watts. AN/MSC-46 100 watts
to 10 kilo watts, AN/TSC-54 varies from zero to 5 kilo watts. Telementry equipment remote control of satellite,
energize axial jets, for spin axis alteration of satellite. Telemetry information transmitted 400 megahertz band
by Air Force. Navy earth terminals not 400 MHZ capability. ADVENT program built AN/FSC-9 later modified for SYNCOM
program and again for IDCSP program. AN/MSC-46 and AN/TSC-54 built for IDCSP program. AN/FSC-9 permanent
installation at FORT DIX NEW JERSEY NJ and CAMP ROBERTS CALIFORNIA CA. AN/FSC-9 60 foot parabolic antenna on 60
foot steel antenna tower on concrete foundation. antenna mount bridge superstructure, counterweight housing electronic
equipment. estimated weight 190 tons. 6,000 square foot operations building for AN/FSC-9. AN/MSC-46 transportable
communication satellite terminal housed in three vans. Rigid Radome over antenna. three diesel generators at 100 kilo
watts each power terminal. AN/,MSC-46 with disassembled antenna weights 114,00 pounds. transport via three C-130E
aircraft. Assembly by eight trained men.
