gold gun al718

[J_Player]

Ban, AL718 operates with a primitive principle. The correct principle is described in patent US 3,500,175.

From what I can see, the Gold Gun was intended to find a null point in VLF reception, when monitoring a VLF transmission from a distant transmitter. The Gold Gun appears to be a simple circuit designed to detect the direction of a null rather than to find the precision and depth of information that could be extracted from the instrument Vaino Ronka patented. It appears the Gold Gun was intended to find a compass direction where the two coils on the ferrites received identical signals, without any attempt to measure phase variations or total signal strength. The idea is if you point the Gold Gun toward buried metal, the signal from each of the ferrite coils will balance to cancel each other, while one side will be stronger if you are pointing away from the buried metal. It seems a questionable proposition, but could work in theory if there is a transmitter operating at the frequency the Gold Gun is tuned to.

Since the transmitters the Gold Gun is tuned to have been shut down, we can expect it cannot possibly work. A solution to make it operational would be to insert an adjustable capacitor to replace the switch with the 820 and 47nf capacitors. If we had an adjustable capacitor there, then we could adjust the capacitor to tune the Gold Gun to a VLF station that is broadcasting. When we find that station, then we can substitute the capacitor for a permanent fixed capacitor which is tuned to a working transmitter instead of wondering why the Gold Gun does not receive any signal. As long as we have the Gold Gun tuned to a transmitter that is broadcasting, we can experiment to see if it detects anything buried.

The entire Gold Gun circuit seems very simple to me... about the same complexity as a Zahori in its original design before hackers removed the cmos filter/switch-timer and converted it to a simple amplfier. At least the Gold Gun has a differential input which could concievably detect something if we are lucky. The principle of VLF detection of buried things is sound, and has been used for years by geologists with their VLF loops.

But does the Gold Gun work in practice when we tune to a transmitter?
Most people say no... A few said yes.
Only way to know is to try it.

Some samples of what people found from the Gold Gun:

"I own a Gold Gun AL718. Couldn't get much out of it, and I've never heard of anyone else who has had success with one. Still, I'd like to get mine into an area where there's more natural gold, and see what it does. Based on what I know of Accurate Locators, I don't expect much of it".

http://www.geotech1.com/forums/showpost.php?p=39238&postcount=2

originally posted by Tim Williams
"...I could not get the gold gun I had to work. But that may be because the signal was not being transmitted. This unit has a transmitter. I can't say if it will work or not. I just wanted to let everyone know there was one on ebay".

http://www.geotech1.com/forums/showpost.php?p=68691&postcount=71

originally posted by Agraz
"I build that model Gold Gun AL718, diagram post for Tim Williams, and work well, but is best put a transmitter with rods in ground, I dont try it".

http://www.geotech1.com/forums/showpost.php?p=101805&postcount=81

originally posted by Geo
"..Many people constructed it at Greece, without results
Few weeks ago, when i went to Olympus for treasure hunting, there was two people who had a GG clone. No results..."

http://www.geotech1.com/forums/showpost.php?p=101815&postcount=82

originally posted by alnamr
"Hi to all
I made this device but there was no sound except confusion
See photos"
http://www.geotech1.com/forums/showp...6&postcount=99

Best wishes,
J_P

[Agraz]

Hello, I build gold gun AL718 and use different ferrite rod with wire and tuning with different ceramic capacitors. I have gun Al707 but this work to more freq. I think is best, some times is dificult tune vlf transmitters, also I try use Radio Shack amplifier.



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[Agraz]

http://www.radioshack.com/product/index.jsp?productId=2062620

[J_Player]

Hello, I build gold gun AL718 and use different ferrite rod with wire and tuning with different ceramic capacitors. I have gun Al707 but this work to more freq. I think is best, some times is dificult tune vlf transmitters, also I try use Radio Shack amplifier.



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Hi Agraz,

Did you detect any buried metal with your Gold Gun?
Did you recover buried metal from the ground after you located it with your Gold Gun?

Best wishes,
J_P

[Agraz]

Hello J_Player: I not use much the AL718, but something not work in G.G.707 the ferrite rod when come here from CA, read:

http://www.geotech1.com/forums/showthread.php?t=15871&highlight=accurate+locators

Next in 2002 I went to old hacienda:inmigrants from Ireland, Jorge B. son of Thomas Braniff, rich man about 1900 in Mexico.


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I went to the area:


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and there I receive fantastic null, in a deep hole in a river, I triangulate the null,,, the other thing, later the amplifier generate more strong sound in amplifier:


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when I discover broken the ferrite rod I send to Accurate L. for repair, next I receive the G.G. with new ferrite rod:


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but G.G. not receive that null in a deep hole,,,Now this old man -1926 say: the last people in hacienda put around in the deep hole very large amount of metal for strengthen the hole.



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for end. What is the reason G.G. boost signals when rod was broken?
also the Al718 not receiver null from deep river.
I think when G.G. broken work to more freq. may be 50-100 khz and detect big metal objets underground. What is you opinion

[Agraz]

I forget, this old man, take old hacienda photo in 1940.

[J_Player]

Hello J_Player: I not use much the AL718, but something not work in G.G.707 the ferrite rod when come here from CA, read:

http://www.geotech1.com/forums/showthread.php?t=15871&highlight=accurate+locators

Next in 2002 I went to old hacienda:inmigrants from Ireland, Jorge B. son of Thomas Braniff, rich man about 1900 in Mexico.

I went to the area:
and there I receive fantastic null, in a deep hole in a river, I triangulate the null,,, the other thing, later the amplifier generate more strong sound in amplifier:
when I discover broken the ferrite rod I send to Accurate L. for repair, next I receive the G.G. with new ferrite rod:
but G.G. not receive that null in a deep hole,,,Now this old man -1926 say: the last people in hacienda put around in the deep hole very large amount of metal for strengthen the hole.

What is the reason G.G. boost signals when rod was broken?
also the Al718 not receiver null from deep river.
I think when G.G. broken work to more freq. may be 50-100 khz and detect big metal objets underground. What is you opinion

Hi Agraz,
The Gold Gun is a VLF radio receiver. When the ferrite rod is broken then it will work the same as when it is not broken if the broken pieces are not separated. If the ferrite rod is separated, then you will see some change in the tuning of the receiver. Maybe when the ferrite rod was replaced, the tuning was changed so you no longer find the same signal as you found before.

The Gold Gun cannot find a signal unless it is tuned to a working VLF radio transmitter. The transmitter that the Gold Gun was tuned to has been shut down. You must now tune it to another VLF transmitter that is not shut down if you want to receive a signal. The strongest VLF transmitters near Mexico are run by the US Navy at US Navy station in Cutler, Maine (NAA 24.0 KHz - 1800 KW power), and a US Navy station in Costa Rica (NAU 40.75 KHz - 1000 KW power). Lower frequency is better for ground penetration. If you can get a good signal from the 24 KHz station, it will give a deeper ground penetration than the 40.75 KHz station, but both of these frequencies should work ok.

You can tune the Gold Gun to a new frequency if you replace the capacitors connected to the frequency switch with an adjustable capacitor. You will find the best signal when you are tuned to a strong VLF transmitter. You may be able to find a smaller transmitter close to where you live that gives a strong signal. If not, then maybe you will find the best signals from the US Navy transmitters.

Best wishes,
J_P

[Agraz]

Ok, Thank you. I try tune G.G. to new vfl transmitter, this is part of metal inside deep river.




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