Re: radioAt least the store in my town here isn't looking to trespass anyone with a radio on their belt. This thing has gone way off course. I totally understand a business can tell someone to get out (read trespass) and not return for any reason they wish. I've done it when I had my shop. Also I was called when I was a police officer to remove people that had been told not to return.
I'm pretty familiar with how it all works. MY only question that had to do with this had more to do with a manager's mindset, I used "on what grounds" but ideally it's "why" would he do that. Also Wal Mart does not have "trespassing anyone with a radio" on their list of reasons to do that. At least the store here does not. I don't know how universal that list is.
Now back to the original title of this.....
Yep, radio at a distance is how I know the local Target is on FRS channel 3. Our household uses FRS channel 3 so I have it programmed in my mobile to listen. When I am in one of my regular dinner restaurant's drive-through line, I can hear Target on FRS channel 3 plain as day. This Target is across a busy 6 lane or more road with a really large parking lot and the restaurant's parking lot between. So, yeah, distance away from the property would be no problem.