Who uses C-band 5G?

Generally, AT&T and Verizon . The C-band frequencies will become available in two chunks. The first 100MHz are now available in 46 major markets across the US, covering about 60% of the US population. Verizon and AT&T split those “A block” airwaves 60/40.

As part of 3GPP release 15, three bands n77, n78, and n79 were identified for 5G operation in the C-band, with a potential service bandwidth of up to 100 MHz.

The aviation industry has pointed out for several years that aircraft radio altimeters operate on C-Band frequencies. The altimeters measure the distance between a plane and the ground. They are crucial for landing aircraft in low-visibility conditions like heavy fog, snow and rain.4 Oca 2022

“5G networks using C-band spectrum operate safely and without causing harmful interference to aviation equipment .