Dx7 on a Heli max axe cp and soon to be fully built T-rex 450 SE v2 i have 2 ar7000 and 2 ar6100 (Make sure they are v 1.2 free fix if you already have them but now the new ones are just showing up_issue with loss of signal) I would say that this is the best item i have for all my rc 1 unit for 3 helis and 2 planes.