H03C3/10—Angle modulation by means of variable impedance
H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
H03C3/14—Angle modulation by means of variable impedance by means of a variable reactive element simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit
Procédé pour passer d'une fréquence à l'autre dans des installations de signalisation à ondes porteuses, utilisant des dispositifs à décharge électronique.