Broadcasting of the resulting BBC Television Service from its Alexandra Palace site began on 2 November 1936, at first time-sharing broadcasts with the 240-line Baird system. However, in January 1937, after three months of trials, the Baird system was abandoned in favour of exclusive broadcasting with the 405-line Marconi-EMI system on VHF, which was more reliable and visibly superior. This was the world's first regular high-definition television service and became the standard for all British TV broadcasts until the 1960s. It was later adopted by other TV organisations around the world. The Emitron was used for the first outside broadcasting, at the televising of the Coronation of George VI and Elizabeth by the BBC in May 1937.