The AD1539-1651D5420 from Anatech Electronics is a RF Duplexer with Frequency 1518 to 1560 MHz / 1626.5 to 1675.5 MHz, Band 1 1518 to 1560 MHz, Band 2 1626.5 to 1675.5 MHz, Power 20 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for AD1539-1651D5420 can be seen below.