The RSF-1457.000-20000-1411-TR from Raltron is a Band Pass Filter with Frequency 1447 to 1467 MHz, Bandwidth 20 MHz, Center Frequency 1457 MHz, Insertion Loss 1.4 to 2 dB, Rejection 48 to 33 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-1457.000-20000-1411-TR can be seen below.