I tried to calibrate my esc to my 72 meg radio and the motor just keeps beeping. I tried another esc and the same problem. I used the cards to set up the ESC butwill not work. I tried another battery and still not working.The ESC start to get warm but not hot. Can anyone help me out? Thanks Joe

If the servos are responding, then your ESC is probably working. It will warm up a little due to the operation of the BEC. You may need to reverse the throttle channel in order to allow the ESC to arm. It must see "0" throttle before it will do so. Also, set the throttle trim all the way down. You may also need to perform an arming procedure such as going from zero throttle, to maximum, and then to zero again. Check the instructions for your ESC.

You should ALWAYS tell us what radio you are using.

Futaba radios typically have ot have the throttle channel reversed.