dr. Best Ultimate Single Chip Two Antennas LRL

[WM6]

Where do you glue the calculator ?

In inner pocket of jeans by advanced digital cycle version. Here we presented Ultimate analog version of LRL.

If someone interested, here approximate wideband spiral coil data: outer diameter 222mm, inner diameter 22mm, wire diameter 2,2mm, inductance 222uH, number of turns 50, lenght of used wire 19m/coil. One can experiment with very different diameters, wires or tubes, nr. of turns, shieldings etc.

Some samples:

[Fred]

It seems you´re deeply into PI´s coils

[ma330]

hi dear wm6
please guide me abuot built coil 56nh in dr.best in 2 anenna ???
i want dr.best 2 antenna.please guide me.

[Max]

hi dear wm6
please guide me abuot built coil 56nh in dr.best in 2 anenna ???
i want dr.best 2 antenna.please guide me.

glue the calculator on your forehead! Will work better than spiral antenna!

[GOLDENSKULL]

Hi to all friends,

anybody build this LRL ?
Did this device work?!!!

[WM6]

hi dear wm6
please guide me abuot built coil 56nh in dr.best in 2 anenna ???
i want dr.best 2 antenna.please guide me.

Hi, dear ma330

regarding your question, please, read answer to Geo in post #4, this tread.

If you still are not satisfied, then follow this guide:

- Use 330k (or better more) Ohms resistor with body diameter 5 mm,
- Use Enameled Cu wire diameter 1.23 mm (to 1.36 mm),
- solder one end of wire to one end of resistor contacts,
- wound exactly 4 turns of wire on resistor body by spacing between turns same as wire diameter (coil have to be length about 9.5mm),
- solder free second wire end to free second resistor contact,
- lacquer your design to consolidate coil on resistor body (use nail lack of your sister).

Now, inductor of 56nH is yours!

Hurry up, gold is waiting!

[WM6]

Hi to all friends,

anybody build this LRL ?
Did this device work?!!!

As dr. Best say this is not pessimistic device, this is an optimistic LRL.

Sure that they work as any other commercially LRL.

I suggest you to build spiral implementation of this device.

Here an example how to build dual spiral coil sensor:

[Fred]

Ok ,
already built this one from your picture,
Is this close enough ?
I detect many things but not sure of size of treasures.
There is gold everywhere in my house and i suppose it is making interferences.
The closer one coming from the coaxial connectors that connect to the antenna itself
Tried to scrap it but surely some atoms remains.
Please help me i need to find a treasure urgently!

[WM6]

Ok ,
already built this one from your picture,
Is this close enough ?
I detect many things but not sure of size of treasures.
There is gold everywhere in my house and i suppose it is making interferences.
The closer one coming from the coaxial connectors that connect to the antenna itself
Tried to scrap it but surely some atoms remains.
Please help me i need to find a treasure urgently!

Excelent work Fred.
As I see you prefer fixed static sensor and I decided to build mobile.
About gold, dont hurry, maybe you live in prohibited aerea and you ned some cap support.
Placing of both spiral coil isnt critical but it is advisable to leave the possibility of a subsequent regulation of distance. Winding of spiral coil isnt critical too only inductivity have to be over 220 nH. For phase shift tunning leave both (or at least one) coil rotating.

Look at picture one of our testing LRL device in spiral sensor design (equiped with beep instead of VU meter), just like idea for possible design. I detected golden dental prosthesis of my uncle at 1.75 km (more uncle did not want to go).

[J_Player]

Ok ,
already built this one from your picture,
Is this close enough ?
I detect many things but not sure of size of treasures.
There is gold everywhere in my house and i suppose it is making interferences.
The closer one coming from the coaxial connectors that connect to the antenna itself
Tried to scrap it but surely some atoms remains.
Please help me i need to find a treasure urgently!

Hi Fred,
The problem is all the gold artifacts inside your house are causing the antenna to give signals stronger than the signals from buried treasure. If you can't move your antenna, then you should shield your gold items in your house so you can detect new treasures. You can wrap all your gold items in platinum foil or screening (make sure the platinum shields are grounded to earth ground). This will effectively shield the gold signal from the antenna. When finished with shielding the gold inside your house, then replace the gold coax connectors at the antenna with aluminum or stainless steel. And also be careful if you have any gold fillings in your teeth. If you cannot have your gold fillings removed, then shield them with platinum foil too. Any remaining signals you pick up will be from new treasure, not from interferences.

Hope this helps.

Best wishes,
J_P

[Esteban]

Hi Esteban. INA121 is a low noise amplifier with max gain 10.000. So at low frequency it can detect (maybe) a signal smaller than 1uV. But it need some filters.....
One answer: does it see any different between the 2 antennas???
Regards

... and? Is a simple joke!

[Esteban]

Hi to all friends,

anybody build this LRL ?
Did this device work?!!!

Of course, not!

[Fred]

Placing of both spiral coil isnt critical but it is advisable to leave the possibility of a subsequent regulation of distance.

I can see how you resolved the conector problem at the rear spiral : you used the new technology of non-conductive waveguide.

Hi Fred... J_P

Hi JP,
Thanks for the hints, i am working on it.
but i have problems grounding to earth ground my teeth shields.
I have lead fillings too, thinking to use them as ground.

[J_Player]

Thanks for the hints, i am working on it.
but i have problems grounding to earth ground my teeth shields.
I have lead fillings too, thinking to use them as ground.

Hi Fred,
If you have gold fillings and also lead fillings, the problem is much worse. You will have a "mouth battery" problem with DC current to also interfere. I think best solution is to make a platinum helmet to shield all your head when treasure hunting. In order to get a proper ground, you can wear golf shoes with metal cleats, and run a braided ground wire connected from the helmet to the metal cleats on your shoes. This should remove the last traces of interference to your LRL antenna. But be careful you always have one foot touching the soil for proper ground.

Best wishes,
J_P

[GOLDENSKULL]

hi wm6,

I want build this device (LRL) ...

You use chip INA121 for amplify receive signals...
I can use other preamps or other chip for this purpose ?
Did best antenna is spiral ?
How you tune this LRL to detect only gold signals ?