Up for sale I have a ProPo ex-5ur radio and one micro receiver for sale. This is a 3 channel digital radio. It is a 2.4 GHz spectrum system. Ultra high speed digital radio with 27 functions that allow you a perfect set up for your driving style. You can run multiple cars with multiple receivers on this radio. I used this radio only a few times at my local track but just don't have the time to put into it. Price is $80 shipped. Thanks.