The RSF-861.000-12000-2015-TR from Raltron is a Band Pass Filter with Frequency 855 to 867 MHz, Bandwidth 12000 kHz, Center Frequency 861 MHz, Insertion Loss 1.8 to 2.5 dB, Rejection 40 to 20 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-861.000-12000-2015-TR can be seen below.