The AM906-851D1007 from Anatech Electronics is a RF Duplexer with Frequency 832 to 870 MHz / 887 to 925 MHz, Band 1 832 to 870 MHz, Band 2 887 to 925 MHz, Power 3 W, Insertion Loss 2.6 dB. Tags: Surface Mount, Ceramic. More details for AM906-851D1007 can be seen below.