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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
1906570
157074
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2 nov 1920 año - First commercial AM radio signal

Descripción:

The first commercial AM radio signal is made by KDKA Pittsburgh. They chose to debut the signal on election day so they could broadcast the results.

Añadido al timeline:

22 oct 2018
0
0
450
History of Media

fecha:

2 nov 1920 año
Ahora mismo
~ 103 years ago

Fotos:

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