servo jitter on range check please help
You have a problem. you have to go by the book to find the trouble. Check the position of the RX in relation to the battery, the type of pushrods (metal), their proximity to the antenna. The length of the wires(if you have servos at the back of the plane). Any metal to metal contact (motor throttle), run your antenna outside the fuselage. Could be servo trouble(check that they operate easily by hand, no restriction on movement is allowed, sometimes the rods interfere with one another or the hinges do not allow full travel. Keep trying, you will find the problem. If you dont, do not fly!!!
Jerry