If the signal from the satellite is stronger, receiving station will be ( )
A. smaller
Bigger
C. more costly
D. less costly
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A communication satellite sometimes is abbreviated to____。
Satellites have significant ____ over other modes of transmission, such as cable and land-line microwave.
About ____ of the Earth surface is defined as the line of sight of the satellite.
Each transponder consists of a frequency shifter, a filter and ____.