Communication Satelites are nothing but mirrors at very high altitude.
You send out the signal from the earth station all the way to the satelites.( Uplink)
Satelites ( transponders) in turn pick up the weak signal which travelled long distances,boost them and retransmit back ( downlink) to many earth stations.
Tata Sky DTH provider has leased 12 ku-band transponders for its DTH operations on INSAT 4A.
Ku-band operates in 14 GHz uplink and 12 GHz downlink
INSAT 4A is a hybrid satelite which supports number of frequency bands. ( C-band, Ku-band, etc)
Posted on January 3rd, 2007 at 5:24 am by A T M
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