The RSF-942.500-35000-1109-TR-NS4 from Raltron is a Band Pass Filter with Frequency 925 to 960 MHz, Bandwidth 35 MHz, Center Frequency 942.5 MHz, Insertion Loss 2.1 to 2.7 dB, Rejection 70 to 25 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-942.500-35000-1109-TR-NS4 can be seen below.