The AD1747-1842D457 from Anatech Electronics is a RF Duplexer with Frequency 1710 to 1785 MHz / 1805 to 1880 MHz, Band 1 1710 to 1785 MHz, Band 2 1805 to 1880 MHz, Power 200 W, Insertion Loss 2 dB. Tags: Module with Connectors. More details for AD1747-1842D457 can be seen below.