Gold Gun with Gemini III Transmitter

[WM6]

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]

Wm6

This is gut for transmitter wm6?

https://s16.postimg.org/bo1rjdglx/15182487_10154985755059396_1991726861_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]

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]

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]

Question ?

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]

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.

L2 and loop antenna has not ground connection

Not in those case.

[abdou2014]

Thank you for relpy

[taxma1981]

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