The RSF-345.000-800-3838-TR from Raltron is a Band Pass Filter with Frequency 344.6 to 345.4 MHz, Bandwidth 800 kHz, Center Frequency 345 MHz, Insertion Loss 3.5 dB, Rejection 13 to 48 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-345.000-800-3838-TR can be seen below.