Minelab detectors, huge coils, small coils, interference, stopping claim jumpers, huge gold plus ? 

Great suggestion!

That was the one I was talking about, 2 million watt transmitter.

Good point.

That would involve making a sled and going for a huge long drive.

Yes, that reminds me to try to find it.

@@DetectorMods Hope the wife doesn't come into vacuum the room lol

@@SDC_Prospecting $15 gold.

I am going to ask Gemini, the answer is can type automotive spray paint, clean the surface and spray it on.

@@DetectorMods thank you ile get a pressure pack of gloss white and do my green coiltec coil

I already send you the link

It depends on construction, we put a 12” nugget finder advantage coil on a sdc and I was much better on all fronts.

Those signals can travel thousands of miles if the conditions are right.

Only if I use Teflon

@@DetectorMods Maybe it goes well if I answer it instead of posting, or it was the link to my site I'm want to build a detector, just for fun of building, not to save money. There is no gold here but there is been a lot of fighting in ww2 and people are living on this island for over 1000 years. What is a good value for the self-inductance and what is the best Q for me (at what frequency, I can measure L and Q upto 6 GHz 🙂 ) It is hard to find good technical information. A lot of channels have no clue what they are doing, just building something. You are the first I find who really knows his business. I want to build and design a pulse detector. I am an EE and have a well equipped shop because I repair measurement, calibration-gear and marine-electronics for a living,

Once upon a time I was working on marine radios and radar systems, then went into point to point microwave links, fm transmitters and satellite receivers, then into dirt transceivers lol It is a steeper subject than satellite comms.