The AM800D209 from Anatech Electronics is a RF Duplexer with Frequency 824 to 849 MHz / 869 to 894 MHz, Band 1 824 to 849 MHz, Band 2 869 to 894 MHz, Power 6 W, Insertion Loss 1.8 to 2.6 dB. Tags: Surface Mount. More details for AM800D209 can be seen below.