Actually, if you use any Broder's software you can set the TED's to program 1 for gaz data and everything works fine. We have used this as our primary way of using the displays wireless for many years with no problems. It is also very kind on batteries, typical 8-10 hours using dual courses, racers every 15-20 seconds and counting run times.
When using Geoff's software, you will have to use the Direct Transmission options.