The RFDUP210504BT from RF-Lambda is a RF Duplexer with Frequency 1.95 to 2.145 GHz, Band 1 1.95 to 1.955 GHz, Band 2 2.14 to 2.145 GHz, Power 200 W, Insertion Loss 0.6 dB. Tags: Module with Connectors. More details for RFDUP210504BT can be seen below.