The RSF-879.000-30000-3030-TR from Raltron is a Band Pass Filter with Frequency 864 to 894 MHz, Bandwidth 30000 kHz, Center Frequency 879 MHz, Insertion Loss 3.0 dB, Rejection 18 to 50 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-879.000-30000-3030-TR can be seen below.