Ultrabeam Antenna MOTOR INTERNAL VIEW ( Calibrate & Retract )

I made this video because I've always wanted in the past (as I have a antenna Ultrabeam 6/40M)to understand what could happen inside the engine during a calibration or a retract. What is the difference about the movement (?) between these two operations ? We don't need to be worried after a calibration. What about the engine? What can It happen if I change the frequency during the movement of the engine? I'm in 40M and then I touch 10M so it start to change into 28500. During this action I touch again the frequency or I choose the portion CW (28000).. what does it happen? Is the controller that works or is it starting any new strange movement? While I touch again with little steps (ex. Steps from 25khz, what does it happen?), can I maintain the button pressed for more seconds UP or DOWN? In this video it will be possible to find the answers to these questions and to understand how the ULTRABEAM engine works. It's very important, for a technician, to understand what it does happen on the other side of the cable. It's useful and it makes me more relaxed. 73 de Stefano IK5XCT & IK5PWQ