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#2
12-19-2011, 10:53 PM
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#4
12-20-2011, 09:35 AM
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Capacitor in thank circuit depends on VLF signal transmitter frequency in your region. In schematic given capacitor can be of little use if there are not radio signal inside tank circuit resonate frequency. But even there are not VLF radio signal, you can build weak, simple and cheap transmitter tuned at AL718 frequency and put it in field of your search ten meters away. You need to tune your AL718 ferrite antenna at the best directivity by changing ferrite rods mutual distance and coils position. You need transmitter for such tuning placed of about 50 meters away (good one is battery powered signal generator with two wires - one inserted in earth and other as antenna up in air). For some additional idea about transmitter you can look here: http://franitzasab.webs.com/transmit...kitreviews.htm
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#5
12-20-2011, 12:19 PM
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I visit the page you recommend,
There are very interesting transmitter kits, Which one you thing is the best solution To work us a pair with a gold gun ? I think also that I have to change the coil capacitors With big value trimming capacitors for the tunning Of the ferrite antenna. Also if somebody have a good schematic for a transmitter we can try to build one, Thank s a lot.
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#7
12-20-2011, 04:08 PM
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Please put a transmitter that is above.I have not found such a transmitter on the Internet.Please put the transmitter.?? Put in attachments pcb gg817 in sprin layout  enjoy
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#9
10-15-2016, 12:05 PM
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gold gun
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#10
09-01-2020, 10:38 AM
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Hi Morgan what is the first schematic and third one ? there are two different lrl? or we have to make both of them to make a gold gun ? sry for my awkward question because im new to this electronic parts
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#13
02-19-2012, 07:37 PM
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GG AL707 schematic is well known and tested. You need to read threads about GG Al707 from start. Capabilities to detect something with GG AL707 are more theoretical than practical (main problem is proper antenna tuning). In all cases you can detect with this devices a bigger ore underground deposits only. But device is cheap, easy to build, work better than all mineoro and other scam devices, so it is worth to try.
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#15
02-23-2012, 11:30 AM
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Hi ionios
I hope your GG works, so i will look forward for your results. For J.PLayer, my friedn i was tryiong to understand this divice function and i compared to pdk, wich is also a VLF receiber. About GG, i think that is not necesari to have the correct ferrite to catch the correct frequencies, cause you can use other ferrites to or may be the same arrange has pdk RX coil. The point is to set the correct frequency by just doing a correct LC circuit tune to the frequencies you want to recibe. May be by just building a small vlf transmiter, like coil stimulator made bu pdk, will do the job to. In ather words i think that you can combine pdk and GG schematics to get a good LR MD. Regards Nelson Quote:
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#16
02-23-2012, 03:42 PM
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There is a little use, even if you have original GG, if there is no TX frequency on which GG is tuned in your local. You can replace non-existent (military) local VLF signal transmitter by your own portable one. I have already posted some adequate TX schematic here. J_P can explain this matter more in detail.
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