The Amateur Radio Club OZ3EDR celebrates the 50th year of Hjalmar Roesen's/OZ3ZJ chairmanship with the callsign OZ50SOUND until the end of the year.

The callsign points out the club's connection to their local Sound-Community (Sound Art Lab, Sound Hub Daenemark, City of Sound).

For QSL information see qrz.com - http://oz3edr.dk/