TopRuslan

[apecore]

Can you be more specigic on the method and the measurement coil?
I m not familiar with how Akulas did it

[apecore]

So for good understanding, attached the method for connecting and probing.

So method 1: adjusting groundwire coil at 2Mhz and monitor Vpp at connection #2?

Btw, groud connections SG and Oscilloscoop are separate connected together and to the grid grounding.

[Dog-One]

So for good understanding, attached the method for connecting and probing.

That looks like a good starting point.  If you can use your two probes
in differential mode (math minus function) without attaching the ground,
that would be best.

So method 1: adjusting groundwire coil at 2Mhz and monitor Vpp at connection #2?

We want to see if the amplitude changes when the ground is connected
at the resonant point and if so, by how much.

Then we want to see if the resonant point shifts frequency when the
ground is connected and if so, by how much.

Btw, groud connections SG and Oscilloscoop are separate connected together and to the grid grounding.

Yes, this could be a problem I hadn't thought of.  We need to keep
the ground clips from being connected to the coil if at all possible.
I'm thinking if you only connect the signal generator ground clip to
the inductor, hopefully this won't distort things too badly.

I also sent an email to this guy asking about how we might be able
to simulate ground wire impedance determination.  I probably won't
get an answer right away or at all, but figured since this guy knows
his way around LTspice, maybe he would be interested enough to
lend a hand.

[apecore]

Yes, this could be a problem I hadn't thought of.  We need to keep
the ground clips from being connected to the coil if at all possible.
I'm thinking if you only connect the signal generator ground clip to
the inductor, hopefully this won't distort things too badly.

Ok, i made small vid in first attempt to see what happens.
Connected SG to inductor...
Math function on and sweeping frequency.

https://youtu.be/bUPAODcxLaU

My first results w/o math functionality is based on Vpp , see attached overview.

[AlienGrey]

I thought you said you were a keen amature radio guy only as far as i know you only need an earth for 1/4 wave.

sil