The AM1800-2250D1162 from Anatech Electronics is a RF Duplexer with Frequency 1750 to 1850 MHz / 2200 to 2300 MHz, Band 1 1750 to 1850 MHz, Band 2 2200 to 2300 MHz, Power 2 W, Insertion Loss 1 dB. Tags: Surface Mount, Ceramic. More details for AM1800-2250D1162 can be seen below.