TopRuslan

[Dog-One]

Probably it is better to use a sub harmonic from the 2.0Mhz.
I was considering 81st... that would be then 24.691khz.

I'd be willing to bet the 81st subharmonic would ride in the threshold
of noise--you would never detect it.

That push-pull frequency, IMHO, is there to set an offset from the
Tesla frequency.  There is a high offset and a low offset.  One of them
gets attenuated and the other does not.  That's where the pumping
from ground action takes place.  If both or neither offset was attenuated,
you would be back to zero sum and any pumping would cease.

This is why the grenade coil is so touchy to tune it properly.  We are
talking an adjustment of 0.024 MHz makes or breaks it.  Wave your
hand over it while it is running and it quits.  To get it more stable
we need to run the push-pull at a bit higher frequency, like 0.1 MHz,
still using the same principal.  If we run it at too high of a frequency,
we lose the sharp lobes on the frequency envelope and our power
drops way off.

I can start to see this as a serious engineering challenge and my
hat is off to Ruslan and the other guys that have done this and got
it to work.

[Dog-One]

I can do a similar test with another coil... does it matter what configuration?
Same length or a different grenade?

If you have or would like to build a straight cylinder coil that
has the same number of turns as your grenade, run your tests
again on that coil and I think you will see a much different trend.

You'll have to find its main resonant frequency to use as your
baseline.

[apecore]

If you have or would like to build a straight cylinder coil that
has the same number of turns as your grenade, run your tests
again on that coil and I think you will see a much different trend.

You'll have to find its main resonant frequency to use as your
baseline.

Ah, ok... so 37.5meter 0ne layer coil.

Regarding PP freq... I will check if 100khz is possible with the used yoke.
I will post a picture of its wavevorm

[AlienGrey]

In the original 37.5mtr grenade you have the two currents running is opposite directions (P Reva) fame
look on Hyiq.com there is a film on youtube about how it works.

https://youtu.be/OXsXeDJiXK

Ooops this video is only availible on HYIQ menu sever, if your into truth! P Reva thread

[apecore]

Ah, ok... so 37.5meter 0ne layer coil.

Regarding PP freq... I will check if 100khz is possible with the used yoke.
I will post a picture of its wavevorm

As you stated completely different story.
Have two vids uploaded
- zero groundline windings
- 9 groundline winding

I used single layer 37.5 meter 1mm coil with Fres @ 630khz

https://youtu.be/myibSsfd2W4

https://youtu.be/fCIWkvMa8ps

Regarding PP freq, i managed to get 113khz at inductorloop with 20nf series cap.
This results in significant lower Vpp at inductor