The RSF-2140.000-60000-1411-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 4.2 dB, Rejection 20 to 30 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-2140.000-60000-1411-TR can be seen below.