The WDCGV4+4-1900-1920/2010-2025-50-2 from Wainwright Instruments is a RF Duplexer with Frequency 1.9 to 1.92 GHz / 2.01 to 2.025 GHz, Band 1 1.9 to 1.92 GHz, Band 2 2.01 to 2.025 GHz, Power 25 W, Insertion Loss 1.5 dB. Tags: Module with Connectors. More details for WDCGV4+4-1900-1920/2010-2025-50-2 can be seen below.