 High speed shortwave telegraphy circuits were then installed from London to Australia, India, South Africa and Canada as the main element of the Imperial Wireless Chain from 1926.The Dutch began conducting experiments in the shortwave frequencies in 1925 from Eindhoven.The radio station PCJJ began the first international broadcasting on March 11, 1927 with programmes in Dutch for colonies in the Dutch West Indies and Dutch East Indies and in German, Spanish and English for the rest of the world.