The Birth of Broadcasting
Radio broadcasting as a public medium emerged in the early 1920s, with KDKA Pittsburgh making the first licensed commercial broadcast in November 1920. Within three years, hundreds of stations had launched across America, and living rooms were transformed by the new "wireless." The first programming was rudimentary — music performances, weather reports, and agricultural news — but broadcasters quickly understood the medium's potential.
By 1926, NBC had launched as America's first national network, followed by CBS in 1927. The network era would define radio for the next three decades.