Abstract: A spark ignition gas flow control system which includes an antenna responsive to spark-generated radio frequency waves, and a detector connected to the antenna and to a filter network. An amplifier network is connected to the filter network for receiving a filtered signal from the filter network and amplifying the received signal which is transmitted to a sensitive relay coil. The relay is operatively connected to a switch in a solenoid valve circuit. A solenoid valve in this circuit is disposed in a conduit supplying gas to a gas burner located in close proximity to a spark-generating device adjacent the antenna. The solenoid valve electrical circuit is closed to open the valve at a time when sparking is effected by the spark-generating device, and such sparking action is detected by the antenna. Thus, combustible gas is permitted to be discharged from the gas burner and ignited by the spark at this time.