The CS06-018-091 from Westell Technologies is a Cross Band Couplers with Frequency 800 to 2300 MHz, Frequency Band1 800 to 960 MHz, Frequency Band2 1710 to 2300 MHz, Insertion Loss Band1 0.3 dB, Insertion Loss Band2 0.3 dB. Tags: Module with Connector. More details for CS06-018-091 can be seen below.