The RSF-881.500-25000-1411-TR from Raltron is a Band Pass Filter with Frequency 869 to 894 MHz, Bandwidth 25 MHz, Center Frequency 881.5 MHz, Insertion Loss 3 dB, Rejection 15 to 42 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-881.500-25000-1411-TR can be seen below.