The RSD-836.500.500-881.500-1814-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 29 dBm, Insertion Loss 1.8 to 2.3 dB. Tags: Surface Mount. More details for RSD-836.500.500-881.500-1814-TR can be seen below.