Ericsson AIR 6488 B43 Active Antenna Integrated Radio. A high-capacity 64T64R (64 Transmit, 64 Receive) Massive MIMO Active Antenna System. Operating in the Band 43 TDD spectrum (3600–3800 MHz), this unit integrates the radio transceiver and the physical antenna array into a single high-efficiency housing. Engineered to support digital beamforming, multi-user MIMO (MU-MIMO), and extreme network capacity layers for macro 5G NR network architectures