The RSF-866.000-7000-2015-TR-NS1 from Raltron is a Band Pass Filter with Frequency 862.5 to 869.5 MHz, Bandwidth 7000 kHz, Center Frequency 866 MHz, Insertion Loss 2 to 2.5 dB. Tags: RF SAW Filter. More details for RSF-866.000-7000-2015-TR-NS1 can be seen below.