The RSF-2140.000-60000-3030-TR from Raltron is a Band Pass Filter with Frequency 2.11 to 2.17 GHz, Bandwidth 60 MHz, Center Frequency 2140 MHz, Insertion Loss 2 to 2.8 dB, Rejection 35 to 20 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-2140.000-60000-3030-TR can be seen below.