Radio frequency summary Frequency BandBand NumberNotes3.7 GHz C-Bandn77Branded as “5G Ultra Wideband”, Launched on January 19, 2022.28 GHz Ka-Bandn261Branded as “5G Ultra Wideband”, these are the mmWave bands for high-speed LAA using small cells. Went live in May 2019.39 GHz Ka-Bandn260Verizon (mobile network) – Wikipedia en.wikipedia.org › wiki › Verizon_(mobile_network)