The Cold War's ghostly radio broadcasts

During the Cold War, shortwave radio broadcasts were critical to American espionage efforts.

"HM01 Spectogram," from Shadows of State. | Spectograms are the visual representation of sound, in this case the sound of a shortwave radio transmission. | (Lewis Bush)

Shortwave transmission sites — known as "number stations," because initial broadcasts were simply strings of numbers — were used by both the U.S. and Soviet governments to send propaganda to foreign countries, since these...

What feeling does this article give you?
Joy
Disgust
Fear
Anger
Sadness

#hashtags to follow:

Cold War [+]    Spectogram [+]    Shadows of State [+]    Spectograms [+]    Lewis Bush [+]    Shortwave [+]   

More #news: