Definitions for "C-band"
A microwave frequency band. When used for satellite links, the frequencies assigned are: uplink (to the satellite): 5.925-6.425 GHz downlink (from the satellite): 3.700-4.200 GHz C-band signals are only slightly attenuated by rainfall, making its use advantageous over Ku-band for some applications.
Satellites transmit most programming in one of two bands of frequencies, either C-Band or KU-Band. A C-Band satellite is one which operates in the 4/6 gigahertz band.
Used loosely for satellite downlinks within the 3.4 to 4.2 GHz frequency range.