Gold Gun with Gemini III Transmitter

[taxma1981]

Originally Posted by WM6

It can be tuned to 40kHz or even 50kHz too - no problem.

Genuine GG is set to 3 fixed frequency not for 0-30kHz as you wrote (and later "mean").

Οκ

[taxma1981]

we can with a radio (AM band) and a transmitter (AM band) to detect metals and gaps?

[WM6]

Theoretically yes.
It is problem with antenna directivity. Ordinary AM radio ferrite antenna does not provide enough directivity for such purpose.
Proper tuned GG antenna can be set to high directivity. GG antenna has a much larger potential in its construction.

[taxma1981]

Thanks!!!!! The gold gun real work ,3 times i locate copper

[abdou2014]

How can I calibrate GG at 250 Khz, The highest frequency I have succeeded is 90 Khz ?

[WM6]

Originally Posted by abdou2014

How can I calibrate GG at 250 Khz, The highest frequency I have succeeded is 90 Khz ?

Along with changing C part of tank circuit, you need less turns (about 2x100 turns) on ferrite rods.

For good results it is better to stay under 100kHz. Suggested frequency is about 30kHz.

[abdou2014]

Thank you WM6 .

[taxma1981]

This is gut for transmitter wm6?

https://s16.postimg.org/bo1rjdglx/15...91726861_o.jpg

[GOLDEN LILLY]

Taxma, when you find the copper 3 times with your gold gun, what is the reading of your millivolt meter high or low value? And what is the distance?

[GOLDEN LILLY]

Wm6, i plan to use an AM radio as a receiver for my AM transmitter. AM radio is more precise and selective as a receiver, my question is, can i use the antenna of gold gun in the AM receiver?

[taxma1981]

The distance 10 meter and the reading from meter 150-480 mv

[WM6]

Originally Posted by WM6

Along with changing C part of tank circuit, you need less turns (about 2x100 turns) on ferrite rods.

For good results it is better to stay under 100kHz. Suggested frequency is about 30kHz.

Sorry cannot access: "Gateway timeout" return only.

[WM6]

Originally Posted by GOLDEN LILLY

Wm6, i plan to use an AM radio as a receiver for my AM transmitter. AM radio is more precise and selective as a receiver, my question is, can i use the antenna of gold gun in the AM receiver?

Simple replacement will not work. You need to adapt GG antenna along with input antenna amplifier to one of frequencies between 500 and 1600kHz (due inter-frequency mixer limitation used in AM radio). Such high frequencies are good for detecting shallow gold dust, but soil penetrating is relatively poor. Better to stay with 30kHz. Selectivity can be improved with good GG antenna tunning (by proper setting its directivity on free in field away from different disturbances and not in lab).

[abdou2014]

Please How to connect a loop antenna in place of the telescopic antenna ???

[WM6]

[abdou2014]

Thank you WM6 , According to the picture :
L1 must have more turns than L2
L2 and loop antenna has not ground connection

[WM6]

Originally Posted by abdou2014

L1 must have more turns than L2

Yes, for L2, about 2 turns of 2mm wire in diameter are enough.

For L1 number of turns depend on used ferrite, C, and working frequency. Data should be given on link where you got this TX end schematic.

For loop antenna diameter of wire used can be smaller than 0.2mm, but sum of total intersection of all loop antenna turns should not be less than intersection of L2 wire.

The same rule is for L2 regarding L1. Intersection of L2 should not be less than sum of
intersection of all turns of L1.

But calculation of L1 should be first. L1 tank circuit should resonate at you chosen working frequency.

The follow L2 and at the end Loop antenna.

This is, if we go complicated way, which is not needed (except if we need ferrite transformation for balanced impedance to antenna input).

We can go more simple and wound L1 as Loop antenna, as it was primary intention.

Originally Posted by abdou2014

L2 and loop antenna has not ground connection

Not in those case.

[abdou2014]

Thank you for relpy

[taxma1981]

Originally Posted by abdou2014

Thank you for relpy

Where are you from my friend,?i am from greece and i have strong signal in greece from germany,france and italy..you dont need transmitter

[taxma1981]

This is a area target,i detect this point from 100 meter distance with my gold gun,25 bronze coins

[WM6]

Taxma1981, you are a magician. 25 bronze coins at 100m - wow!!!.

Do you sell something?

[taxma1981]

I think i don t detect the 25 coins,this area 10×10 meter have more coins...i have a special ferrite antenna

[GOLDEN LILLY]

Taxma, what special ferrite do you have? Please give me information. I bought ferrite rod from Latvia on ebay. The size is 10mm diameter and 7.5 inches long. I experimented the number of turns and wire gauge. I clearly hear my analogue watch ticking from several inches. My problem now is the RMS converter and LCD display which is not available in my place. So, i intend to use spectrum analyzer apps for visual indication. The vlf Signal in my place is weak. I just hear the signal clearly last December 2016 but now no more. So i made a signal generator as transmitter based on the above schematic but lacks the distance because i have a little idea on the matched antenna for the circuit.
Please give information on your special ferrite. My email is errel74@yahoo.com.

[abdou2014]

Hi GOLDEN LILLY, please what sort of antenna do you use in your transmitter ?

[GOLDEN LILLY]

Hi Abdou, i am still experimenting on my transmitter. I used the above posted tx schematic. I am not sure if i got the correct or matched antenna because i am not an expert. I need more information and complete details for the correct tx power. I connected my coil directly from the output instead of through ferrite core transformer which is i think a wrong.
Here is my Gold Gun Transmitter....