I took a try at making a racing favorite list for the SDS100. I programmed in quick keys as well as number tags for the teams.
Quick keys will enable/disable cars by car #. To use quick key method - while the list is in scan mode, press 1.1.1 and press "E", this will disable car #1. Do this again to enable the car #1. This will work for all car numbers.
To use number tag method, press "CHANNEL" to hold on any car. While car is in hold mode, press 1.1.1, and then press "CHANNEL" again. You should end up at car#1-channel 1. From here you can scroll using the knob to get to channel 2 of car#1. Another method is while car#1 is highlighted, Press "DEPT", wait for the function indicator to go away, the press "CHANNEL". This leaves you scanning both channels of a single car#. I like the number tag method much better.
I realize nascar only uses analog signals, for the race fan experience. With that in mind, I personally wouldn't risk carrying around a $650.00 or more investment at a racetrack. The BC125AT works fine for me.
What got me thinking about this, was reading other threads on IMSA, Formula 1. It seems other series us digital, so a digital scanner would make much more sense there. Anyway, let me know what you think. I can't vouch for the frequencies., I used a popular website to find them.