The RSF-2605.000-100000-1109-TR-NS1 from Raltron is a Band Pass Filter with Frequency 2555 to 2655 MHz, Bandwidth 100 MHz, Center Frequency 2605 MHz, Insertion Loss 2.2 to 3 dB, Rejection 50 to 20 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-2605.000-100000-1109-TR-NS1 can be seen below.