The only thing I can think of that sounds even remotely close to what you're describing is when Congress made it illegal [0] to listen in on cellular phone call

The only thing I can think of that sounds even remotely close to what you're describing is when Congress made it illegal [0] to listen in on cellular phone calls a few decades ago but, notable, pager traffic was specifically excluded from the law. Until listening to cellular calls was made illegal, it had always been legal (AFAIK) to receive any transmissions on any frequency (the reasoning was that the signal was being broadcasted into, e.g., your home). [0]: https://en.wikipedia.org/wiki/Electronic_Communications_Privacy_Act https://en.wikipedia.org/wiki/Electronic_Communications_Priv...