The AM737-707D1129 from Anatech Electronics is a RF Duplexer with Frequency 728 to 746 MHz / 698 to 716 MHz, Band 1 728 to 746 MHz, Band 2 698 to 716 MHz, Power 3 W, Insertion Loss 3 dB. Tags: Surface Mount, Ceramic. More details for AM737-707D1129 can be seen below.