The RSF-915.000-2000-3030-TR-NS1 from Raltron is a Band Pass Filter with Frequency 914 to 916 MHz, Bandwidth 2 MHz, Center Frequency 915 MHz, Insertion Loss 4.5 to 40 dB, Power 10 dBm. Tags: Surface Mount, RF SAW Filter. More details for RSF-915.000-2000-3030-TR-NS1 can be seen below.