The RF3210D from Murata is a Band Pass Filter with Frequency 303.33 to 304.33 MHz, Bandwidth 0.5 MHz, Center Frequency 303.825 MHz, Insertion Loss 1.6 to 2.5 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, RF SAW Filter, Ceramic Filter. More details for RF3210D can be seen below.