The AD7A836/881F25DCA from Vanlong is a RF Duplexer with Frequency 824 to 894 MHz, Band 1 824 to 849 MHz, Band 2 869 to 894 MHz, Insertion Loss 2.6 to 3.7 dB, Attenuation 40 to 50 dB. Tags: Surface Mount. More details for AD7A836/881F25DCA can be seen below.