In 1970 Westinghouse put together a retrospective on the history of radio broadcasting in honor of the 50th anniversary of KDKA broadcasting the 1920 election returns.
Years prior, Dr. Frank Conrad, who received numerous awards for his work, including, from the American Institute of Electrical Engineers, the 1930 Edison Medal "for his contributions to radio broadcasting and short wave radio transmission", and the 1936 Lamme Medal "for pioneering and basic developments in the fields of electric metering and protective services" was interviewed by Westinghouse about how KDKA began. This is what he had to say.
As an aside, Dr. Conrad suffered a heart attack on November 6th, 1941 while driving to his winter home in Miami, Florida, and died there three days after the bombing of Pearl Harbor and Manilla on December 10th, 1941.