Radiodetection of Cosmic Ray Extensive Air Showers
  We present the characteristics and performance of a demonstration experiment devoted to the observation of ultra high- energy cosmic ray extensive air showers using a radiodetection technique. In a first step, one antenna narrowed band filtered acting as trigger, with a 4 $\sigma$ threshold above sky background-level, was used to tag any radio transient in coincidence on the antenna array. Recently, the addition of 4 particle detectors has allowed us to observe cosmic ray events in coincidence with antennas. 
D. Ardouin (SUBATECH), A. Belletoile (SUBATECH), D. Charrier   (SUBATECH), R. Dallier (SUBATECH), L. Denis (LESIA), P. Eschs...