The RF1211C from Murata is a Band Pass Filter with Frequency 314.2 to 315.8 MHz, Bandwidth 0.8 MHz, Center Frequency 315 MHz, Insertion Loss 1.8 to 5 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, RF SAW Filter, Ceramic Filter. More details for RF1211C can be seen below.