From a New York Times review by Dwight Garner of the book by David Hendy titled “The BBC: A Century on Air”:

The British Broadcasting Corporation, the BBC — the Beeb — turns 100 this year. “Hullo, hullo, 2LO calling, 2LO calling,” a few thousand listeners heard through the hissing ether at 6 p.m. on Nov. 14, 1922. “This is the British Broadcasting Company. 2LO. Stand by for one minute please!” What followed were short news and weather bulletins, read twice, the second time slowly so that listeners could take notes.