Can the ESC that comes with the Sky Trainer be used with Spectrum recievers? I plugged the ESC into my Spectrum reciever but it just beeps. The ESC works fine with the radio and reciever the plane came with but I would really like to use my own radio.

Have you tried reversing the throttle channel? Just a random thought. I'm still learning this electric stuff for my son and have come across this myself once.

be sure its being plugged to throttle channel as well polarity is correct and yes it should work