Dumb question about running at a track

[BP-Revo]

At the tracks I've driven at, we only turn on the radio on a certain frequency if we have the frequency stick for it. The frequency sticks are little tags or sticks with a marked frequency. If it is gone from the wall, then you know someone is on it, if its not, then feel free to use it.

I find the best way is to use Spektrum, as there is no chance for interference.