The most popular frequency ranges are shown below.
There are two major frequency assignments.One is in the C-band, with thw uplink
(transmission from ground to satellite)at approximately 6 GHz and the downlink
(from satellite to ground)at about 4GHz.The others is in the Ku-band,with the
uplink and downlinkin the range of 14GHz and 12GHz,respctively.