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AM and FM Radio for Classic Cars

Sony ICF38 Portable AM/FM Radio (Black)

$2.12


Kit building is not dead Elenco AM and FM radio kit

The nation’s first radio station licensed by the federal government began broadcasting in Detroit on this date in 1920 — station 8MK, now operating as WWJ. The station was owned by the Detroit News, and operated with an amateur license, which in 1922 was changed to commercial. The first station to receive a commercial license was KDKA in Pittsburgh, which began broadcasting in October of 1920. From these rudimentary early broadcasts, the new medium grew rapidly. In 1922, there were 30 radio stations, but by the following year, there were 556. Now, there are nearly 15,500 AM and FM radio stations across the U.S., along with just over 1,500 low-power FM facilities. Profile America is in its 20th year as a public service of the U.S. Census Bureau.

I was wondering what is the difference between AM and FM radio — I mean, aside from the obvious programming differences with talk radio versus music. Other than that and a button on my radio, what makes AM and FM different?

1947 Bendix Console, with phonograph, AM and FM Radio

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GraffGuru- 2014 Silverado 8" MyLink AM and FM Radio

From these rudimentary early broadcasts, the new medium grew rapidly. In 1922, there were 30 radio stations in the United States, but by the following year, there were 556. Now, there are nearly 15,500 AM and FM radio stations across the U.S., along with just over 1,500 low-power FM facilities.

We need to mention a couple of other things before we leave the discussion of how radio works. We've talked about AM and FM radio, but we haven't explained the real difference.