A reception system for frequency-modulated, i.e. phase-modulated high-frequency signals, for motor vehicles, having a multi-antenna system having at least two antennas, an individually adjustable phase rotation element, situated in the reception path of the corresponding antenna, in each instance, and a subsequent receiver circuit. There is an individually adjustable switching element for switching through or interrupting the signal flow, respectively, is present in the reception path of every antenna. The reception signals are guided by way of phase rotation elements and the adjustable switching elements which are passed to a linear combination circuit, and wherein the combined signal is passed to the receiver circuit. Furthermore, there can be a level indicator for indicating the level of the combined signal in the form of a level signal and a computer device to which this level signal is passed. An the computer device can include an algorithm for determining the phase differences of the reception signals that are present at the input of the combination circuit at a given setting of the phase rotation elements from their level conditions, by means of calculations. This calculation can occur using level measurement samples of the level signal that are performed one after the other, in terms of time, obtained by way of switch setting signals and phase setting signals brought about by the computer device wherein there are differently defined settings of the switching elements or of the phase rotation elements, respectively. Phase setting signals are generated on the basis of the phase differences determined by calculations, for the subsequent setting of the phase rotation elements for phase alignment of the reception signals that are present at the input of the combination circuit when the adjustable switching elements are switched through.