The AM1747-1842D1108 from Anatech Electronics is a RF Duplexer with Frequency 1709.5 to 1785.5 MHz / 1804.5 to 1880.5 MHz, Band 1 1709.5 to 1785.5 MHz, Band 2 1804.5 to 1880.5 MHz, Power 3 W, Insertion Loss 3.5 dB. Tags: Surface Mount, Ceramic. More details for AM1747-1842D1108 can be seen below.