Comment on Goodnight sweet prince

• philpo@feddit.org ⁨13⁩ ⁨hours⁩ ago

  Funny enough yeah,you can trans mit data long range via powerlines.

  I am old enough to remember the older career firefighters having devices at home that basically listened to the frequency shift. If a certain signal was given (via the substations) that frequency shift was observed by the devices and an electric alarm bell was activated so people knew shit had hit the fan and they probably should head to work.

  It was already phased out,thought, back then.

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  • Tyrq@lemmy.dbzer0.com ⁨12⁩ ⁨hours⁩ ago

    That’s cool tech for sure, I didn’t know about that particular one

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