The AM881-942D1186 from Anatech Electronics is a RF Duplexer with Frequency 869 to 894 MHz / 925 to 960 MHz, Band 1 869 to 894 MHz, Band 2 925 to 960 MHz, Power 3 W, Insertion Loss 3 dB. Tags: Surface Mount, Ceramic. More details for AM881-942D1186 can be seen below.