The RSF-1250.00-9000-3030-TR from Raltron is a Band Pass Filter with Frequency 1245.5 to 1254.5 MHz, Bandwidth 9000 kHz, Center Frequency 1250 MHz, Insertion Loss 3.0 dB, Rejection 30 to 45 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-1250.00-9000-3030-TR can be seen below.