jrT-Rex 450 Sport Trex 450 back garden test on new TX Posted October 29, 2011October 29, 2011 Patrick My first trex 450 flight today with my new transmitter, the JR Propo DSX11. Spent a good few hours programming it during the week. Unfortunately it’s very breezy today so it was just a 7:30 hover avoiding the fence and my face!