Abstract: Circuit arrangement for generating a control signal. A circuit arrangement for generating a control signal for a controllable oscillator of a receiving device, is arranged to mix an FSK modulated input signal, having at least two predetermined input frequencies, with an oscillation, output by a controllable oscillator, so as to form an intermediate frequency signal, as well as to derive from the intermediate frequency signal a data signal whose instantaneous value is determined by the frequency of the intermediate frequency signal (intermediate frequency) and also a demodulator pulse signal whose frequency and/or phase is a measure of the frequency and/or phase of the intermediate frequency signal, from the intermediate frequency signal.