The AM1795-2045D991 from Anatech Electronics is a RF Duplexer with Frequency 1710 to 1880 MHz / 1920 to 2170 MHz, Band 1 1710 to 1880 MHz, Band 2 1920 to 2170 MHz, Power 2 W, Insertion Loss 1.8 to 2 dB. Tags: Surface Mount, Ceramic. More details for AM1795-2045D991 can be seen below.