The satellite transponder is an apparatus which allows the transmission of TV/FM signals received via satellite.
SAT-1 is basically composed by a satellite receiver and a TV or FM transmitter.
The apparatus is controlled by a microprocessor which provides for the frequency setting; the control of various fundamental parameters, such as output power, power supply voltage, sound modulation, etc.; and the visualization, on an alphanumeric display, of all the parameters listed below.
Four function switches on the front panel make the visualization and setting operations of the three fundamental frequencies (satellite reception, satellite sound carrier, transmission frequency) easier. Four selectors allow to effect the video inversion, select 27/16MHz bandwith video modulation, select 280/180 KHz bandwith sound modulation, deemphasis sound.
The output power is always adjustable and is controlled by an A.G.C.