• Lesrid@lemm.ee
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      9 months ago

      It’s actually a change in audio equipment. If you have old speakers you can still hear it.

      • RememberTheApollo_@lemmy.world
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        9 months ago

        IIRC transmission power was higher back in the day and the shielding of electronics wasn’t quite as good. So if you put your phone by a speaker the RF interference would be enough to be able to hear over the speaker.