The AD850-931D202 from Anatech Electronics is a RF Duplexer with Frequency 806 to 894 MHz / 902 to 960 MHz, Band 1 806 to 894 MHz, Band 2 902 to 960 MHz, Power 50 W, Insertion Loss 1 to 1.5 dB. Tags: Module with Connectors. More details for AD850-931D202 can be seen below.