This work is about Tunka-Rex, a radio detector for air showers in Siberia. After calibrating the detector and developing a reconstruction method for air shower events, three results are presented, obtained from the 2012-2014 data of Tunka-Rex:
- a method for measuring the energy with a single antenna station.
- a validation of the CoREAS code for simulation of radio emission.
- a comparison of dofferent experiments's energy scales via the radio signal.