The AM1800D732 from Anatech Electronics is a RF Duplexer with Frequency 1805 to 1880 MHz / 1710 to 1785 MHz, Band 1 1805 to 1880 MHz, Band 2 1710 to 1785 MHz, Power 2 W, Insertion Loss 3.9 to 3.95 dB. Tags: Surface Mount. More details for AM1800D732 can be seen below.