The RSF-422.500-5000-3030-TR from Raltron is a Band Pass Filter with Frequency 420 to 425 MHz, Bandwidth 5000 kHz, Center Frequency 422.5 MHz, Insertion Loss 3.5 dB, Rejection 30 to 50 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-422.500-5000-3030-TR can be seen below.