International audienceMeasurements of the radio transients associated to Extensive Air Showers could provide a timely new effective method of detection of Ultra High Energy Cosmic Rays with interesting performances in term of techniques and of accessible observables. The CODALEMA experiment at the Radio Observatory of Nançay, France, explores this possibility using an array of broadband active dipole antennas triggered by an array of ground particle detectors. The implemented detection techniques, the methods of analysis developed and the principal results achieved during the 5 years of upgrading will be recalled. This cursory glance will provide an opportunity to point out some new issues and to suggest some future challenges in this domain
