Building the tuning.
The transmission motor you can buy in a hobby shop.
It is a 12v dc motor with gearbox 1-600. 9 turns a minute.
You have to build a adjustable power supply as low as 0.6v.
Even with a low voltage from 0,6v the motor is still turning the capacitor.
The capacitor is 180 pf 4,5 kv.
I fitted this all in a case for electric wiring.
The loop will be a double loop off 90 centimetres in diameter.
The copper tubing that will be used; the diameter is 12mm and the length is 6 meters.
The parts further needed.
I used drainpipe from 40mm and 32mm.
Inside to stiffen it all I used a broomstick from 28mm and glued all in place.
as there exist already a magnetic loop for 80 meters I will fit them together back to back.
The power supply for tuning the loop.
40 meter loop fitted on the back.
only the feeding loop and the connections have to be made.
All done and working.