• Telodzrum@lemmy.world
    link
    fedilink
    English
    arrow-up
    3
    ·
    2 hours ago

    This is a really old test. There are forum posts of the same concept and some news articles with the test that are so old that they 404 now. An unshielded coat hanger is the most common. And yes, this is done frequently with analog signals. No, you can’t tell the difference.