Method for recording information transmitted over a radio frequency

A method for recording information transmitted over a radio frequency, comprising:

• supplying power, in a clocked fashion, to an arrangement configured to receive and evaluate a radio frequency;
• while the arrangement configured to receive and evaluate is switched on, tuning to a preestablished radio frequency and switching the arrangement configured to receive and evaluate to a monitoring state;
• monitoring the radio frequency for the presence of an identifier designating information;
• in an event the identifier designating information is detected, supplying the arrangement configured to receive and evaluate, and a recording arrangement, with power for a duration of the identifier, and recording information;
• and
• in response to switching on the monitoring state, determining the preestablished radio frequency as a frequency that transmits no traffic information and that was set before the monitoring state was switched on.