The National Radio Quiin

How big is this national radio quiin? Is it like a federal thing, or how do people all agree in the largeva space to not use therself? It is a federal thing. Was created in 19 58. And they actually drive around with this truck listen for a radio signal. They just politely knock on the door and ask those folks to stop using it. But these days also, they try to restrict wyf usage. Why? That also operates in similar frequencies. I mean, i can go into vacation with no selphones, but it wyfy.