C-Band (Compromise Band)
C band is a portion of electromagnetic spectrum in the microwave range of frequencies ranging from 4 to 6 GHz.

C band is primarily used for satellite communications, normally downlink 3.7–4.2 GHz, uplink 5.9–6.4 GHz, usually 24 36-MHz transponders on board a satellite. Most C band satellites use linear polarization, while a handful (particularly older Intelsat satellites) use circular polarization.

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