The Future of " VLF " !

[aft_72005]

Hi Okantex

I know porducer , they come to our test ggarden.

Can you ask from producer that what is meaning of
“Reinforced tank circuit “?

they claim 6-8m for big chaches ,not for coins.

Can not find any metal detector which be able detect
Coin from 6 meter deep in the world.

[okantex]

Hi Aft
they have more than 10 engineers in their team.
I met with one of owners, they do not answer to technical questions.If you ask me thwey do not know anything about electronics.


about a coin from 6m ,do not have any comments.
but rom 4 m yes ,we found a gold coin .
but machine is crap after earthquake 1999.

and in a turkish form ,I read yesterday ,a guy repaired a machine which has a small control box like a cigarette packet. has head like small ball.two coils one with15cm dia and other with 10cm dia.
owner invited him to search in field.he says machine found copper coin form 50m .
a kind of swing detector.
and at that time he had made a bfo .his bfo was affected from it from along distance.when they get closer bot machine effected from each other

[putrechigi]

hi

Unless all go on youtube and type noktadetector then you see

http://it.youtube.com/watch?v=e4__M9rizXg

what you think ebaut?i

[putrechigi]

hi

and this
http://it.youtube.com/watch?v=FnsVbbTek-A

[Unregistered]

LRL

LRL Alert I think

[Fred]

LRL Alert I think

I disagree.Unlike LRL´s this time the devices are tested and important TV channels are talking about it.Aparently they are proud of this innovating company,it it were fake it would be a national shame.
I doesnt mean everything is truth, but it certainlely deserves more attention.IMHO.
Fred.

[Carl-NC]

Interesting... I've seen several cases of new amazing detectors with incredible performance claims, but never seen any such claims substantiated. Personally, I will doubt it can detect a Soviet T-34 at 6m, much less a cache of coins. But I could be wrong.

I did notice in the 2nd video, at the 40-second mark, the 2 guys were holding dowsing devices, the 4 rods commonly known as "Spanish Needles". That doesn't instill confidence in their technical abilities.

- Carl

[Max]

Interesting... I've seen several cases of new amazing detectors with incredible performance claims, but never seen any such claims substantiated. Personally, I will doubt it can detect a Soviet T-34 at 6m, much less a cache of coins. But I could be wrong.

I did notice in the 2nd video, at the 40-second mark, the 2 guys were holding dowsing devices, the 4 rods commonly known as "Spanish Needles". That doesn't instill confidence in their technical abilities.

- Carl

Hi Carl,
about the coin cache ... the experiment with 220silver coins at 24'' made by you...

I think an optimized Tesoro Golden Sabre (not standard or bought one) could detect it. This afternoon I've tested mine on test garden and detected a 0.33L beer can at 50cm underground....easy! I've placed the can just this morning... so it's without any halo or other stuff this time.

Now 24'' are about 61.5cm and I'm start thinking it's possible that an optimized TGS (like described in the relative thread here) can pass the test in an easy soil (medium mineralized) and with a 10'' DD coil (like described).

What do you think ?
Does any of your bought VLFs passed the test till now ?

Kind regards,
Max

[ivconic]

What a coincidence here!!!???
Today, early this morning, a friend asked me for help. Need to locate water pipe at his home, in the ground (due sudden leakage). So i took my TGSL there and easily located that water pipe at 55cm depth! Wow! i didnt expected such result at all. Pipe is 3cm diammeter, 6m long, burried 30 years ago...all rusty, covered with sand about 15cm and than soil over it up to surface. I think this is really good result on iron pipe..!
So far i only tested it on coins and simillar....Very good!

[Qiaozhi]

LRL Alert I think

From watching the video I suspect this is either a PI or a non-motion VLF machine. Firstly it shows a series of pulses being transmitted into the ground (indicating a PI), and secondly the detector users are not swinging the coil (so it could also be a non-motion VLF).
However (as Carl also noted) you get the "uh-oh" effect about half-way through when the dowsing rods suddenly appear.
Who knows? There are some good detector designers around who also believe the dowsing nonsense, so they may be onto something.
Did anyone notice just how high above the ground they were holding the detector? Looks about 10" to 12" to me.

[aft_72005]

Hi Aft
they have more than 10 engineers in their team.
I met with one of owners, they do not answer to technical questions.If you ask me thwey do not know anything about electronics.


about a coin from 6m ,do not have any comments.
but rom 4 m yes ,we found a gold coin .
but machine is crap after earthquake 1999.

and in a turkish form ,I read yesterday ,a guy repaired a machine which has a small control box like a cigarette packet. has head like small ball.two coils one with15cm dia and other with 10cm dia.
owner invited him to search in field.he says machine found copper coin form 50m .
a kind of swing detector.
and at that time he had made a bfo .his bfo was affected from it from along distance.when they get closer bot machine effected from each other

Hi Okantex
I had several years experiment with md and this is my opinion:
I built various type md . Finding one coin from deep in the ground
Dependent to search coil and coin size and … .also one of
The most important parameter is Ground and soil condition.
Typically if all condition are good my be we Are be able find
One coin around ~50cm deep in the ground.
Another technology for finding object in deep is GPR system. Building
GPR not easy because in pulse method it need special and precision
Oscilloscope for ns and ps timing measurement.
Another method using transmits and receive sinus shape wave in GHZ
Range. For higher frequency small object visible and for lower frequency
Big Object .also we need build power amp. in GHZ range .
All of those need special equipment for testing and measurement.
For these reasons and another problems building homemade GPR is
Difficult.
Turkish metal detector me be use vlf or pi technology .therefore seem
As it can not detect Medium size iron box from 6 or 8 meter with normal
Size and shape Coil that we saw in the picture.
Therefore we have only one way in the matter and it is Turkish engineers
Or another friends in this forum speaking about“Reinforced tank circuit “
Technology.
I don’t know and it is new term for me.
And my question from all friends: anybody know about “Reinforced tank
Circuit “? What is it?
Best regards.

[Max]

From watching the video I suspect this is either a PI or a non-motion VLF machine. Firstly it shows a series of pulses being transmitted into the ground (indicating a PI), and secondly the detector users are not swinging the coil (so it could also be a non-motion VLF).
However (as Carl also noted) you get the "uh-oh" effect about half-way through when the dowsing rods suddenly appear.
Who knows? There are some good detector designers around who also believe the dowsing nonsense, so they may be onto something.
Did anyone notice just how high above the ground they were holding the detector? Looks about 10" to 12" to me.

Hi,
fact they need to keep it high 10'' or 12'' probably mean that it's a PI... or, in other words, that when they use PI function they need to keep it high cause of problems due to soil effect.

I read it well ? 6meters for a coin... a normal coin e.g. 2cm diameter ?
What a non sense!

I think the LRL-like stuff is meant of receiving something from target but to me the only claim of finding a coin at 6meters is total crap.

It's impossible with physics I know pass the "wall" of noise due to soil and detect so far and small target signal. Do they know another kind of physics ?

Best regards,
Max

[erolunall]

http://www.teknolojiekibi.com/yeni/i...hp?topic=522.0

schema for dedection of 1 coin from 2 meter with antenna

but I dont belive nokta dedektor performance.

best wishes
Erol Ünal

[Max]

http://www.teknolojiekibi.com/yeni/i...hp?topic=522.0

schema for dedection of 1 coin from 2 meter with antenna

but I dont belive nokta dedektor performance.

best wishes
Erol Ünal

Hi Erol,
seems an LRL thing... uA741 simple receiver... like field strenght indicators of very low quality... I dubt this thing can actually detect a coin at 20cm on air. For sure not at 1m or 2m underground: impossible.

Best regards,
Max

[Fred]

Actually this looks like a transmitter tuned to 73khz and strangely modulated , and receiver for an unknow frequency (we dont have coil diameter), but probably around 100Mhz.Im sure it works fine for "detecting" a lot of FM stations.
In the text i see i coin at 1 meter?
Regards,
Fred