Cuvelier Jean

TL;DR: In this paper, a method for transmitting periodic electrical signals with a very low frequency-error tolerance, in particular in single sideband mode, was proposed, in which messages constituted from fixed frequencies taken from a spectrum of relevant frequencies are transmitted, and one frequency from the relevant frequencies is chosen as a marker frequency, and after reception, the marker frequency is used for the demodulation of the received frequencies (fo) and in which received frequencies, demodulated in terms of useful frequencies (fu), serve to actuate devices with a low frequency error tolerance, characterized in that