{
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  "path": "/2026/03/02/the-war-departments-1944-guide-to-fm-radio-is-still-a-great-explainer.html",
  "publishedAt": "2026-03-02T21:51:30.000Z",
  "site": "https://boingboing.net",
  "tags": [
    "Post",
    "FM radio",
    "History",
    "military training film",
    "Science",
    "video",
    "WWII",
    "training film in 1944 to explain frequency modulation",
    "Read the rest",
    "The War Department's 1944 guide to FM radio is still a great explainer",
    "Boing Boing"
  ],
  "textContent": "\n\nThe U.S. War Department made this training film in 1944 to explain frequency modulation to soldiers, and it opens with the perfect sales pitch: two GIs playing ping pong while listening to the radio. A third man fires up an electric razor, and the AM signal turns to mush. — Read the rest \n\nThe post The War Department's 1944 guide to FM radio is still a great explainer appeared first on Boing Boing.",
  "title": "The War Department's 1944 guide to FM radio is still a great explainer"
}