RADIO DETECTION OF COSMIC RAY EXTENSIVE AIR SHOWERS: PRESENT STATUS OF THE CODALEMA EXPERIMENT

The CODALEMA experiment uses 6 large frequency bandwidth antennas of the Nancay Radio Observatory Decametric Array (France). In a first configuration, one antenna narrowed band filtered acting as trigger, with a 4 � 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 allowed us to observe cosmic ray events in coincidence with antennas.