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Originally Posted by g-sani
Thank you J_P, I can undrestand that WM6 knows better the subject.
So what do you think it is best to use whith my gold gun?
Is it a necessity to transmit in exactly the same frequency as we receive?
Do you know if there is anything ready to be used in the market?
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Hi g-sani,
I have never used any hand-held detector on the market that was able to locate buried metals for me at a long range more than about 1/2 meter, or maybe up to 2 meters for very large metal things when using a VLF loop. I only hear stories that other people say there are locators that can find buried metals at long range.
I have no way to know if a Gold Gun is best for you to use. If you can find a gold gun, then you could check to see if it is locating buried metals for you. If you find it helps you to find buried treasure, then you will know whether you should use it or not.
From what I understand, the gold gun is a receiver without a transmitter. I have no idea of what RF or electronic principle it uses to locate buried metal. But if it is only receiving RF, then it could be looking for the strongest signal strength, or it could be looking for some specific kind of modulation or interference at the frequency it is tuned to. I have no way of knowing because I don't know what the circuit electronics are designed to detect.
One thing I can tell you that if it is an RF receiver with added signal processing circuitry and no transmitter, then it is designed to receive RF signals from a distance, not from a transmitter at close distance from the receiver. If you were use a small transmitter at your hunting site, then the signal coming from this transmitter will be broadcasting RF in the near field, whose propagation properties are not the same as transmitters far in the distance. You will find that the field strength and radiated power pattern does not follow the math formulas that are used to determine what that signal will be if it came from a distant transmitter. But at least any modulation you send from a nearby transmitter will be preserved in the near field area.
If you want to know more about how to actually build a transmitter and receiver, I would recommend that WM6 is very knowledgeable about this, and probably has more experience and knowledge than most people in this forum.
Best wishes,
J_P