Distributed channel assignment in multi - radio 802

In an electronic ignition timing adjusting system for an internal combustion engine wherein in response to two particular angular positions of the crankshaft of an internal combustion engine a capacitor is charged and discharged so that the time of termination of the discharging of the capacitor is selected as the desired ignition timing of the engine, when the amount of charge on the capacitor is greater than a predetermined value, the charge and discharge currents of the capacitor are reduced as compared with those under other conditions. The capacitor is prevented from being saturated at low engine speeds, thereby accomplishing stable adjustment of the ignition timing throughout the range of low and high rotational speeds of the engine with a high degree of accuracy.