The AM2050-2250D1163 from Anatech Electronics is a RF Duplexer with Frequency 2000 to 2100 MHz / 2200 to 2300 MHz, Band 1 2000 to 2100 MHz, Band 2 2200 to 2300 MHz, Power 2 W, Insertion Loss 1 dB. Tags: Surface Mount, Ceramic. More details for AM2050-2250D1163 can be seen below.