Satellite Communication - Section 1

For global communication, the number of satellites needed is

In communication satellites, the up-link normally operates at a higher frequency than the down-link because it

Which of the following factor does NOT contribute to the drift of a geostationary satellite from its stationary position in space?

In the case of a 70-MHz IF carrier for a transponder bandwidth of 36 MHz, energy must lie between MHz.

In satellite communication, frequency modulation is used because satellite channel has

The Sun blots out the transmission of a geosynchronous satellite twice a year when satellite passes directly in front of it. This outage lasts for about

For satellite communication, standard Earth stations have antenna diameters in the range of __________ metre.

The most effective anti jamming technique is