CB Radio: How Truckers Turned 27 MHz Into America's First Chat Room

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In the late 1970s you could twist a dial through the static and hear Betty Ford signing off as First Mama, or Mel Blanc doing Bugs Bunny for random kids. This episode explains how citizens band radio got there. The FCC set aside spectrum for personal use in 1945, inventor Al Gross built early handhelds, and expensive UHF parts sank the idea until the 23-channel Class D service opened at 27 MHz in 1958. For years it served electricians and the Coast Guard. Then the 1973 oil crisis brought a 55 mile per hour speed limit, and truckers paid by the mile fought back.

Drivers used CB to find diesel, warn of speed traps, and organize blockades, and the public followed them onto the air under invented handles. The episode covers the songs and films that fed the craze, the collapse of FCC licensing in April 1983, and the physics behind the culture: nine-foot whip antennas, co-phased mirror mounts, single sideband, and skip signals bouncing off the ionosphere. It also tracks how Britain, Australia, Japan, and Indonesia tried to contain an American export that ignored borders.

C.W. McCall's Convoy reached number one on the Billboard Hot 100 in 1976, and Smokey and the Bandit romanticized the outlaw trucker.
Users reserved Channel 9 for emergencies and made Channel 19 the truckers' channel, far enough away to avoid interference.
Operators running illegal linear amplifiers were nicknamed alligators: all mouth and no ears.
Britain legalized 27 MHz in 1981 after street protests, and Al Gross made the first legal call from Trafalgar Square.
Japan caps CB at 500 milliwatts because the same spectrum carries its commercial marine fishery radios.

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