The RSF-868.300-7000-3838-TR from Raltron is a Band Pass Filter with Frequency 864.8 to 871.8 MHz, Bandwidth 7000 kHz, Center Frequency 868.3 MHz, Insertion Loss 2.5 to 3.5 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-868.300-7000-3838-TR can be seen below.