The AM737-707D1051 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 3 W, Insertion Loss 3 dB. Tags: Surface Mount, Ceramic. More details for AM737-707D1051 can be seen below.