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Thread: Dial-up tone spectrogram - GIF

  1. Jun 13, 2022, 10:27 AM #1
    Altair
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    Dial-up tone spectrogram - GIF

    Dial-up tone spectrogram.




    Previously:

    Rotary un-Smartphone - photo
    Tone generator - GIF
    Coca-Cola telephone from the 1980s - GIF
    1957 telephone selector - GIF
    1973 ARPA network map - photo
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  3. Jun 13, 2022, 10:47 AM #2
    Frank S
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  4. Jun 17, 2022, 06:16 PM #3
    nova_robotics
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