The AD836-881D238 from Anatech Electronics is a RF Duplexer with Frequency 830 to 843.5 MHz (Rx) / 875 to 888.5 MHz (Tx), Band 1 830 to 843.5 MHz (Rx), Band 2 875 to 888.5 MHz (Tx), Power 50 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for AD836-881D238 can be seen below.