The AD897-942D437 from Anatech Electronics is a RF Duplexer with Frequency 880 to 915 MHz / 925 to 960 MHz, Band 1 880 to 915 MHz, Band 2 925 to 960 MHz, Power 50 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for AD897-942D437 can be seen below.