The WVC-1880D1960-60M04 from Wevercomm is a RF Duplexer with Frequency 1.85 to 1.91 GHz / 1.93 to 1.99 GHz, Band 1 1.85 to 1.91 GHz, Band 2 1.93 to 1.99 GHz, Power 20 W, Insertion Loss 0.5 to 0.6 dB. Tags: Module with Connectors. More details for WVC-1880D1960-60M04 can be seen below.