The sensor radio system (11) has multiple senders (14) and a receiver (13), which stays in connection with the senders through a wireless multiple-access channel in each case. The multiple-access channel has multiple slots within a transmission frame. Each sender is equipped with a sensor providing a measurement value at its output and a radio station, which transmits a scaling value to the receiver through the multiple-access channel within a slot. An independent claim is included for a method for operating a sensor radio system.