The RSF-849.500-41000-3030-TR from Raltron is a Band Pass Filter with Frequency 829 to 870 MHz, Bandwidth 41000 kHz, Center Frequency 849.500 MHz, Insertion Loss 3.2 to 4.2 dB, Rejection 58 to 17 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-849.500-41000-3030-TR can be seen below.