so i bought a complete set of radio and reciever off from a member on here, it's Airtronic M8 with spektrum module and receiver. i brought it to big parking lot today and the radio was lost control like at around 100 - 150 feet away, checked the all the batteries and they're seem fine, i noticed the antenna wire on the reciever is too short, could it the problem? will it improve if i extend the wire? please help thanks!

Spektrum receivers do have short antennas... don't expect to see the long antenna wire like an FM radio uses. I'd call Spektrum and ask what the proper length for the receiver antenna is for yours and see if it's correct before trying to make it longer. An antenna that is too long will detune your receiver and reduce range just as a too-short antenna can.

tring to hook up a sr3000 to my revo and having problem setting it up . every time i try to bing it the gree light only comes on and then starts to flash quickly what am I doing wrong the revo has the op drive on it any help setting this up the light never come on, on the module
thanks

newera... try binding with the servos and opti drive unplugged... just the battery.

still just flashing quickly with only the battery in

it stopped flashing and didnt stay green

anything else I can try