The AM749-1732D1025 from Anatech Electronics is a RF Duplexer with Frequency 740 to 758 MHz / 1710 to 1755 MHz, Band 1 740 to 758 MHz, Band 2 1710 to 1755 MHz, Power 2 W, Insertion Loss 2 dB. Tags: Surface Mount, Ceramic. More details for AM749-1732D1025 can be seen below.