Receiver adaptively operable for multiple signal transmission systems

A receiver for receiving high frequency signals including analog modulated high frequency signals and digital modulated high frequency signals, the receiver comprising:

• converting means for selecting a channel of the received high frequency signals and for converting the high frequency signals in the selected channel into intermediate frequency signals;
• demodulating means for demodulating the intermediate frequency signals, the demodulating means including a first demodulation system for demodulating intermediate frequency signals corresponding to the analog modulated high frequency signals and a second demodulation system for demodulating the intermediate frequency signals corresponding to the digital modulated high frequency signals and selectively outputting an output signal demodulated in one of the first demodulation system or the second demodulation system based on a control signal;
• control means for outputting the control signal based on a signal provided to the control means by the second demodulation system, the control signal indicative of whether the high frequency signals in the signal channel are analog modulated high frequency signals or digital modulated high frequency signals;
• and
• a selectively closable frequency control loop including an oscillator providing an oscillating signal to the converting means, the frequency control loop being selectively closed based on the control signal provided by the control means, the frequency of the oscillator being controlled when the frequency control loop is closed.