KDKA is still years away first broadcast KDKA Westinghouse’s KDKA station A short early history of wireless including KDKA commercial radio KDKA first commercial radio broadcast Radio broadcasting in 1920 100 years before Westinghouse’s KDKA station KDKA KDKA PBS the first radio station is still years away KDKA http://www.pbs.org/wgbh/aso/databank/entries/dt20ra.html