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Satellite Communication - Engineering

Q1:

The expression for satellite link frequencies such as 4/6 GHz denotes that

A 4 GHz is the up-link and 6 GHz is the down-link frequency

B 4 GHz is the down-link and 6 GHz is the up-link frequency

C the system operates at a mean frequency of 5 GHz

D one frequency is used as a back up for the other

ANS:B - 4 GHz is the down-link and 6 GHz is the up-link frequency

All we know that Uplink Frequency = 6 GHz.
Downlink Frequency= 4 GHz.
So it may be 6/4 or 4/6.