The AD942-1857D1034 from Anatech Electronics is a RF Duplexer with Frequency 925 to 960 MHz / 1.805 to 1.91 GHz, Band 1 925 to 960 MHz, Band 2 1.805 to 1.91 GHz, Power 50 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for AD942-1857D1034 can be seen below.