this post was submitted on 21 Mar 2024
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Oh yeah. I totally forgot about that. Why did that stop? Phones started using different frequencies or something?
It's actually a change in audio equipment. If you have old speakers you can still hear it.
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.