RE: DCC question about Airwire/QSI and DCC
You might be able to take an AirWire receiver, take the DCC outputs and feed them to a typical DCC booster. This has been the subject of another thread... look in this forum. But, it has been reported that the AirWire system is not "perfect" in it's DCC timing, so the system might not work great.
You would have to experiment.
Look for that other thread, and read it and make you decision.