The RSF-927.000-3800-3838-TR from Raltron is a Band Pass Filter with Frequency 925.1 to 928.9 MHz, Bandwidth 3800 kHz, Center Frequency 927 MHz, Insertion Loss 5.0 dB, Rejection 35 to 45 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-927.000-3800-3838-TR can be seen below.