New Frequencies Daily Update 2021
A communications satellite’s transponder is the series of interconnected units that form a communications channel between the receiving and the transmitting antennas. It is mainly used in satellite communication to transfer the received signals.
A transponder is typically composed of:
an input band-limiting device (an input band-pass filter),
an input low-noise amplifier (LNA), designed to amplify the signals received from the Earth station (normally very weak, because of the large distances involved.)
a frequency translator (normally composed of an oscillator and a frequency mixer) used to convert the frequency of the received signal to the frequency required for the transmitted signal,
an output band-pass filter,
a power amplifier (this can be a traveling-wave tube or a solid-state amplifier).
FREQ: 4015 V 30000
Life Center Network
FREQ: 12562 H 29990