The RSF-869.000-2000-3030-TR-NS from Raltron is a Band Pass Filter with Frequency 868 to 870 MHz, Bandwidth 2000 kHz, Center Frequency 869 MHz, Rejection 25 to 45 dB, Upper Rejection 45 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-869.000-2000-3030-TR-NS can be seen below.