Perhaps I (we) wanna built such coil, handholdable, for Jeohunter to get the most and easy depth power out of it. Seems the medium (standard) coil has some tuning capacitors on it but let's start it simple:
How much windings would we need - ca. 50 or ca. 100 per DD coil side?
100 would be very powerful creating the EMfield but it weights more if the wire isn't very thin at such a huge coil.
Is it possible building it good working without osci?
As material I suggest very stable rubber highpressure water pipe that is good fixed to carbon or hightecplastic coil dish so it's undestructable at all! It gets cutted at one side, the wire putted through and waterproof sealed.
How much windings would we need - ca. 50 or ca. 100 per DD coil side?
100 would be very powerful creating the EMfield but it weights more if the wire isn't very thin at such a huge coil.
Is it possible building it good working without osci?
As material I suggest very stable rubber highpressure water pipe that is good fixed to carbon or hightecplastic coil dish so it's undestructable at all! It gets cutted at one side, the wire putted through and waterproof sealed.