The AM1230-1565D999 from Anatech Electronics is a RF Duplexer with Frequency 1170 to 1290 MHz / 1520 to 1610 MHz, Band 1 1170 to 1290 MHz, Band 2 1520 to 1610 MHz, Power 3 W, Insertion Loss 2 dB. Tags: Surface Mount, Ceramic. More details for AM1230-1565D999 can be seen below.