The AM1585-1230D1134 from Anatech Electronics is a RF Duplexer with Frequency 1190 to 1270 MHz / 1545 to 1625 MHz, Band 1 1190 to 1270 MHz, Band 2 1545 to 1625 MHz, Power 3 W, Insertion Loss 1 dB. Tags: Surface Mount, Ceramic. More details for AM1585-1230D1134 can be seen below.