C-Band spectrum consists of radio frequencies within bands 4 GHz and 8 GHz. According to National Frequency Allocation Plan 2018 (NFAP), C-Band frequencies from 3.3 GHz to 3.6 GHz (i.e. 300 MHz) are earmarked for 5G. It is called mid-band spectrum. It has caused concern among cable and satellite (C&S) TV sector, as their satellite band is 3.7GHz to 4.2GHz. There could be out-of-band emission (OBE). 5G signals would be far more powerful and all-pervasive than satellite signals. There should be a separation of 100 MHz between 5G services and satellite services to ensure satisfactory signals ( in the 3.7GHz to 4.2GHz). This 100 MHz is called guard-band.

Each operator of 5G must have for effective service 80-100 MHz. The more the spectrum, the better the quality of service. An operator must have at least 80 MHz each in the mid-band (TRAI).

If the guard-band has 50 MHz between the services, 5G and satellite operators must use appropriate band pass filters (BPF).