The RF3700D from Murata is a Band Pass Filter with Frequency 371.6 to 372.4 MHz, Bandwidth 0.4 MHz, Center Frequency 372 MHz, Insertion Loss 1.8 to 3 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, RF SAW Filter, Ceramic Filter. More details for RF3700D can be seen below.