The AM710-740D1139 from Anatech Electronics is a RF Duplexer with Frequency 704 to 716 MHz / 734 to 746 MHz, Band 1 704 to 716 MHz, Band 2 734 to 746 MHz, Power 5 W, Insertion Loss 2.5 dB. Tags: Surface Mount, Ceramic. More details for AM710-740D1139 can be seen below.