The RSF-869.000-2000-1411-TR from Raltron is a Band Pass Filter with Frequency 868 to 870 MHz, Bandwidth 2000 kHz, Center Frequency 869 MHz, Insertion Loss 2.7 to 3.5 dB, Rejection 48 to 13 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-869.000-2000-1411-TR can be seen below.