A method of operating a mobile receiving system includes the steps of registering and storing, in a first cycle, a plurality of receivable transmitters in a first specifiable frequency range with a first receiving method, and establishing a number of the receivable transmitters from the first cycle. The method further includes the steps of registering and storing, in a second cycle, a plurality of receivable transmitters in the first specifiable frequency range with the first receiving method, and establishing a number of the receivable transmitters from the second cycle. The number of receivable transmitters from the first cycle are compared with the number of receivable transmitters from the second cycle and, when the numbers of receivable transmitters in the first cycle and the second cycle deviate from one another by a first specifiable value, the first receiving method is switched to a second receiving method.