VARIATION OF MORGAN'S PISTOL

[Esteban]

Originally Posted by Fred

Hi Robert,
All info about ferrite is in the "...492 feet" thread.
Anyway by adjusting the gap you can slightly change permeablility, thus
frequency.Maybe you could get them in antiphase and obtain a perfect null?

Robert, i cannot understand you: in precedent messages you told us making an antenna for VLF would take thousands of meters of wire, now you give the recipe to make one , and more, a good one ,small enough for our purpose ???
Regards,
Fred.

Of course, you tune at 455 or 500 Khz with light and few wire and some picofarads... Tune is a thing, wave length is another thing. With his philosophy, you will need tons of wire for to tune at 12 Khz a metal detector...