Spectrum and JR are 2 totally different companies. Spectrum licensed their 2.4 technology to JR. After Spectrum came out with the dx7 and people were having unexplained crashes and spectrums response 'we dont know what your talking about"; the car guys came out and they had that problem with their Spectrum radios 2 years before and Spectrum came out with a capacitor to connect between the battery and receiver to stop the brown outs. The car guys were only using up to 2 servos and were having that problem how do you think it was for someone flying a BVM F100 with leading edge slats, flaps, brakes and retracts at TOP GUN? I have friends who lost their plan, engine and radios because of Spectrums lies. why did spectrum sell their radios with digital servos and 4 cell reciever battery? That is why I will never buy a Spectrum radio.