The RSF-2593.000-194000-1109-TR-NS1 from Raltron is a Band Pass Filter with Frequency 2496 to 2690 MHz, Bandwidth 194 MHz, Center Frequency 2593 MHz, Insertion Loss 1.8 to 3.2 dB, Rejection 55 to 15 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-2593.000-194000-1109-TR-NS1 can be seen below.