The AM1880-1960D1099 from Anatech Electronics is a RF Duplexer with Frequency 1930 to 1990 MHz / 1850 to 1910 MHz, Band 1 1930 to 1990 MHz, Band 2 1850 to 1910 MHz, Power 3 W, Insertion Loss 3.8 dB. Tags: Surface Mount, Ceramic. More details for AM1880-1960D1099 can be seen below.