The AM707-737D1038 from Anatech Electronics is a RF Duplexer with Frequency 698 to 716 MHz / 728 to 746 MHz, Band 1 698 to 716 MHz, Band 2 728 to 746 MHz, Power 5 W, Insertion Loss 3.5 dB. Tags: Surface Mount, Ceramic. More details for AM707-737D1038 can be seen below.