The RSD-836.500-881.500-1612-TR from Raltron 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 30 dBm, Insertion Loss 1.3 to 2.2 dB. Tags: Surface Mount. More details for RSD-836.500-881.500-1612-TR can be seen below.