The RSF-866.500-7000-3030-TR-NS1 from Raltron is a Band Pass Filter with Frequency 863 to 870 MHz, Bandwidth 7000 kHz, Center Frequency 866.5 MHz, Insertion Loss 3.5 dB, Rejection 35 to 40 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-866.500-7000-3030-TR-NS1 can be seen below.