RFM products are now Murata products. RO3104C Ideal for 303.825 MHz Remote Control and Security Transmitters Very Low Series Resistance Quartz Stability Pb Complies with Directive 2002/95/EC (RoHS) The RO3104C is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount ceramic case. It provides reliable, fundamental-mode, quartz frequency stabilization of low power transmitters operating at 303.825 MHz. This SAW resonator is desig.