The AM1950-2250D1081 from Anatech Electronics is a RF Duplexer with Frequency 1780 to 2120 MHz / 2200 to 2300 MHz, Band 1 1780 to 2120 MHz, Band 2 2200 to 2300 MHz, Power 2 W, Insertion Loss 2.5 dB. Tags: Surface Mount, Ceramic. More details for AM1950-2250D1081 can be seen below.