The AE1902-1982DB2005 from Anatech Electronics is a RF Duplexer with Frequency 1.895 to 1.91 GHz / 1.975 to 1.99 GHz, Band 1 1.895 to 1.91 GHz, Band 2 1.975 to 1.99 GHz, Power 50 W, Insertion Loss 0.5 dB. Tags: Module with Connectors. More details for AE1902-1982DB2005 can be seen below.