The AE1765-1855DB2034 from Anatech Electronics is a RF Duplexer with Frequency 1.75 to 1.78 GHz / 1.84 to 1.87 GHz, Band 1 1.75 to 1.78 GHz, Band 2 1.84 to 1.87 GHz, Power 5 W, Insertion Loss 0.5 dB. Tags: Module with Connectors. More details for AE1765-1855DB2034 can be seen below.