Page last updated on: Tuesday, March 5, 2013 German special event On June 20, 1913, Wilhelm II (German Emperor) visited the village of Eilvese near Hannover on the occasion of the completion of the building of a 258 meter high radio tower, at that time the highest in Germany. The special event callsign DL100OUI (SDOK 100OUI) will be QRV throughout the year to remember the 100th anniversary of the first commercial radio contact between Germany and the USA from this location. OUI were the call letters of the German station at that time, the US station was located in