I have one of the tiny REs that fits in your pocket. I also have the Radio Shack dinosaur headphones like the crew uses and a Radio Shack Pro 89 Race Scanner. I use the scanner for the weather and to listen in on police calls in addition to drivers. I recall programming the Nascar channels from information published on the internet. I checked for changes every race. I haven't used either in ages so I have no idea what's going on with them now.I own my scanners instead of rent, but they're the standard RE 3000s and yes they show frequency numbers under driver name and car number. Out to maybe 3 or 4 decimal points? I can't remember off hand.