FCC C-band

C-Band 5G: Everything you need to know More specifically, C-Band refers to radio frequency bands between 4 and 8GHz , according to the Institute of Electrical and Electronics Engineers (IEEE) — although in the case of the US, the FCC designates the range as between 3.7 and 4.2GHz.

Radar altimeter interference from 5G signals can take the form of loss of radar altitude information or, worse, incorrect radar altitude information unknowingly being generated . … This is in addition to radio altimeter use for autoland and in Category (CAT) II/III and Required Navigation Performance (RNP) AR approaches.

During the two-week delay in deploying new 5G service, safety experts determined that 5G interference with the aircraft’s radio altimeter could prevent engine and braking systems from transitioning to landing mode , which could prevent an aircraft from stopping on the runway.23 Şub 2022