The RSF-868.300-1200-3838-TR from Raltron is a Band Pass Filter with Frequency 867.7 to 868.9 MHz, Bandwidth 1200 kHz, Center Frequency 868.3 MHz, Insertion Loss 6.0 dB, Rejection 15 to 30 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-868.300-1200-3838-TR can be seen below.