ΑΜ radio detector

[taxma1981]

I will tell you a story from a machine that found gold in 1990.
I was told that there was a radio receiver on the ground somewhere ,another man with a small transmitter was walking opposite the receiver at a distance of 100-200 meter,
maybe there are two transmitters I'm not sure....the transmitter moves around the receiver and as the time passes it approaches the receiver,when something is found directly in the receiver and transmitter then the signal is reduced and a red light is on....in this way a box of gold was found, can a technician tell us a few words about this method?
https://ibb.co/SR5hzvh

[humhum]

Originally Posted by taxma1981

I will tell you a story from a machine that found gold in 1990.
I was told that there was a radio receiver on the ground somewhere ,another man with a small transmitter was walking opposite the receiver at a distance of 100-200 meter,
maybe there are two transmitters I'm not sure....the transmitter moves around the receiver and as the time passes it approaches the receiver,when something is found directly in the receiver and transmitter then the signal is reduced and a red light is on....in this way a box of gold was found, can a technician tell us a few words about this method?
https://ibb.co/SR5hzvh

It is very simple, the signal sent from the transmitter is reflecting from buried and moving
to Receiver , but here Receiver not is simpe Receiver !!!

[Mike(Mont)]

Maybe that guy has dyslexia? This is the whole reason why hand-held frequency locators have a hard time--the transmitter needs to stay in one place for about five minutes for the signal line to develop. Remember the signal line IS the discrimination.

Haven't seen any posts from Geo for a long time. Hope he is okay.

[taxma1981]

They did not say details so I do not know exactly how it works

[WM6]

Originally Posted by taxma1981

They did not say details so I do not know exactly how it works

This configuration could work (in fact it is very long known configuration).


Problem is, that it works with very large metal deposits only ... and.....

antenna should be as much directive as possible ... and ...

NOT directed straight toward transmitter as on those drawing, ... otherwise ...

only transmitter signal will be received and not much weaker reflective signal too.


Transmitter signal should be excluded (zeroed) by searching "from side" with

receiver antenna constantly hold at about 90 degrees to the transmitter signal.

Transmitter itself is best to be raised as high as possible above the surface.


To combine receiver with proper tuned GG AL718 antenna, would be a good solution.

This mean, you need to use stacked Ferrite core antenna (there is only one Ferrite core

antenna in commercial MW/LW receiver) to get improved directivity and more sensitivity

to reflected signal.





.

[taxma1981]

the transmitter for experiments 1 watt is good or wants smaller?

[humhum]

Originally Posted by WM6

This configuration could work (in fact it is very long known configuration).


Problem is, that it works with very large metal deposits only ... and.....

antenna should be as much directive as possible ... and ...

NOT directed straight toward transmitter as on those drawing, ... otherwise ...

only transmitter signal will be received and not much weaker reflective signal too.


Transmitter signal should be excluded (zeroed) by searching "from side" with

receiver antenna constantly hold at about 90 degrees to the transmitter signal.

Transmitter itself is best to be raised as high as possible above the surface.


To combine receiver with proper tuned GG AL718 antenna, would be a good solution.

This mean, you need to use stacked Ferrite core antenna (there is only one Ferrite core

antenna in commercial MW/LW receiver) to get improved directivity and more sensitivity

to reflected signal.





.

''Transmitter signal should be excluded [/COLOR](zeroed) by searching "from side" with
receiver antenna constantly hold at about 90 degrees to the transmitter signal.''

Yes ,but So is when Tx and Rx Anettas is in Fix position 90 degrees , but when Rx is in Fix (without moving) and Tx is in moving position , so working method will be different.

[reza vir]

Originally Posted by taxma1981

I will tell you a story from a machine that found gold in 1990.
I was told that there was a radio receiver on the ground somewhere ,another man with a small transmitter was walking opposite the receiver at a distance of 100-200 meter,
maybe there are two transmitters I'm not sure....the transmitter moves around the receiver and as the time passes it approaches the receiver,when something is found directly in the receiver and transmitter then the signal is reduced and a red light is on....in this way a box of gold was found, can a technician tell us a few words about this method?
https://ibb.co/SR5hzvh

Treasure in its surroundings
There are many different frequencies
All frequencies that are at the same angle are merged
Here we have a new frequency that hits the treasure
The output of that variable
And it can not be properly picked up with a radio receiver
You have a lot of trouble finding
With respect

[taxma1981]

effort counts, changes will be made along the way

[WM6]

List of fixed SW beacon transmitters:


http://www.dl8wx.de/BAKE_KW.htm






.

[WM6]

Her you have schematic MW AM transmitter.
You can receive reflected signal by regular MW portable radio.


https://drive.google.com/file/d/12Yj...kQlfi7KyV/view

[taxma1981]

Thanks 👍

is there a case for the transmitter and receiver to be used for cave detection?