Why do we need coaxial cables for TV signal transmission, what would happen if we would just use a „normal“ cable instead?
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Most cables are used for electrical signals. There is a significant amount of power behind the signal lots of electrons are flowing. Coax cables are used for much weaker signals where the sender can’t force the signal to be the shape they want by just using a lot of power. So regular cables for electrical, connections coax cables for gently guiding radio waves.
Trying to actually eli5 so it’s not a complete explaination but touches on the common everyday usecase.
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