The Ericsson KRC161 /1 is a radio unit RRU used in the Ericsson Radio 44153 system. It is designed for wireless communication and operates in the B3 frequency band. The Ericsson 4415 B3 RRU supports 2T2R two transmit, two receive configuration and delivers a transmit power of 40W. It operates at a frequency of 2100MHz, making it suitable for 3G or LTE networks. The KRC161 637/1 RRU provides reliable and efficient radio performance for mobile network deployments.