time signal receiver - for France Inter

for France Inter A very accurate time signal is available by tuning in to the Rugby MSF transmitter. This is not, however, the only such signal emit- ted into the air waves. A similar ser- vice is provided by the French long- wave station "France Inter. This transmitter is somewhat unusual as it transmits talking and music as well as the second-pulses. Its carrier fre- quency is exactly 10.214Hz (163,840 Hz) which can quite easily be divided to obtain the time-base signal required. The time code transmitted by France Inter every minute contains binary information encoded by using a series of single and double pulses. This system 1C1 K4017 65, makes it easier for a modified radio to process the signal. The circuit described here can be used to receive the France Inter time signal almost anywhere in West Europe. The receiver was designed in such a way that it can be used to directly control a time-clock, such as the 6502 housekeeper described in the May 1982 issue of Elektor. The in...