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Cell phones used to be all analog. I don't think anyone at all realized in the early days when you talked on a cell phone you were literally broadcasting over the airwaves like a walkie talkie and anyone with a scanner could listen in to your entire convertsation.
Most of the cell phones are all transmitting digitally now so you can't here what's being said.
But in the day, the 800mhz frequencies were funny as hell.
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