Wirelessly posted (Mozilla/5.0 (X11; Linux i686; U; en-US) Gecko/20081217 Vision-Browser/8.1 301x200 LG VN530)
All of the crew chief-to-driver comms, and the official NASCAR stuff are conventional, analog FM. The inter-crew comms are Mototrbo.
Public safety typically uses the G-deck Interop talkgroups on the RWC.