Tuning of a radio receiver

摘要

The present invention relates to a method of tuning a radio receiver to a desired frequency. The frequency of each tuning circuit in the radio receiver is controlled by controlling the capacitance diodes of the tuning circuits. The control is accomplished with an individual DA converter arranged for each tuning circuit with which the frequency of the tuning circuit associated therewith can be controlled independently of the other tuning circuits. The optimal control values of each DA converter is defined at least in two points of the frequency range of the radio receiver. These control values are stored in a memory provided in the radio receiver. On the basis of the stored control values the control values for the entire frequency range are calculated for each control means.