Heuberger, A.A.HeubergerGeiselbrecht, S.S.GeiselbrechtSeitzer, D.D.Seitzer2022-03-082022-03-081994https://publica.fraunhofer.de/handle/publica/303117A telemetry transmitter system contains a transmitter unit and a microprocessor. In order to avoid the mass storage of telemetry transmitters, the telemetry transmitter system according to the invention is designed so that the transmitter unit has a frequency control unit and an oscillator, and the microprocessor can be connected to a frequency input device which only generates a control code for the frequency control unit at permissible transmitting frequencies, the control code being storable by the microprocessor in a non-volatile memory. When the microprocessor is switched on, it reads out the control code from the non-volatile memory and sends it to the frequency control unit.de608patent1989-3929363