The RSF-859.000-12000-2015-TR from Raltron is a Band Pass Filter with Frequency 853 to 865 MHz, Bandwidth 12000 kHz, Center Frequency 859 MHz, Insertion Loss 1.7 to 3 dB, Rejection 50 to 20 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-859.000-12000-2015-TR can be seen below.