How to build a loop for LRL

[Geo]

Hi. Here is the way that i made a loop for my electrostatic detector.

1. We pass the lid from a box of plastic colour 10 krg (it has 30cm diameter).
2. We cut it in the middle, as it appears in the photograph, in order to it is lighter.
3. We wrap the core with 2m wire 0,15mm diameter.

[Geo]

4. We wrap 1 turn from wire 2,5 mm diameter
5. We pass the core through the wire
6. Fix the coil (turn) in the plastic nutshell with hot glue (Max, calm )
7. We connect the FIS and we stick it above in the nutshell
Now its ready



Regards

[peroon]

Simillar to White's TM808 coils!?

[Max]

4. We wrap 1 turn from wire 2,5 mm diameter
5. We pass the core through the wire
6. Fix the coil (turn) in the plastic nutshell with hot glue (Max, calm )
7. We connect the FIS and we stick it above in the nutshell
Now its ready



Regards

Hi,
seems very easy to do... nice work.

Did you have any result with that design ?

I guess this is the kind of coil employed with tape recorder preamp/amplifier stuff... as Esteban described... or do you use something different ?

Kind regards,
Max

[zenit52]

Hi dear Geo,

very nice work for building loop !!!

Please explain more this loop that how it working and share your LRL schematic here and tell us about it's performance ...
I am waiting for your answer...

with best regards... zenit52

[Geo]

Simillar to White's TM808 coils!?

As loop yes. But i don't know about TM808 tunrs.

[Geo]

Hi,
seems very easy to do... nice work.

Did you have any result with that design ?

I guess this is the kind of coil employed with tape recorder preamp/amplifier stuff... as Esteban described... or do you use something different ?

Kind regards,
Max

Hi Max.
I saw it at a post from Esteban with a Aluminium loop. I had not al bar so i made it with the lid of a plastic box and a thin copper wire. It is not for the tape recorder preamplifier because i dont believe at it. Tape preamplifies are NAB preamplifiers so i dont like to play with them. I like every preampl to have straight line frequency responce.
I will use the loop with my electrostatic detector that i told at other thread. It is the PCB5 modificated.

Regards

[Geo]

Hi dear Geo,

very nice work for building loop !!!

Please explain more this loop that how it working and share your LRL schematic here and tell us about it's performance ...
I am waiting for your answer...

with best regards... zenit52

Hi zenit52.
Advantage of this loop is that it is not so sensitive at erratic signals. I have a electrostatic detector that give me some beeps at some places but i can't understand the exactly point to dig....
If this loop has more gain then maybe the "random" beeps to be continuesly so to have the ability to pin point the coins

Regards

[Esteban]

Yes, is style TM808, closed. As Geo said, is similar to aluminium, except is more ease to make. Yes, with this style no pick many interferences.

Geo, good work!

[Max]

Yes, is style TM808, closed. As Geo said, is similar to aluminium, except is more ease to make. Yes, with this style no pick many interferences.

Geo, good work!

and no tape recorder preamp... so... it's different from your suggested design!

As you can see people don't trust much your tape-recorder-based-LRL...

Have you ever made an LRL that works ???

Just hitting the keyboard , uh ? Like Dr. Hung!

Kind regards,
Max

[Esteban]

and no tape recorder preamp... so... it's different from your suggested design!

As you can see people don't trust much your tape-recorder-based-LRL...

Have you ever made an LRL that works ???

Just hitting the keyboard , uh ? Like Dr. Hung!

Kind regards,
Max

Why not? If you know the know-how... sure you know!

Of course, I made many... and you?

[Esteban]

4. We wrap 1 turn from wire 2,5 mm diameter
5. We pass the core through the wire
6. Fix the coil (turn) in the plastic nutshell with hot glue (Max, calm )
7. We connect the FIS and we stick it above in the nutshell
Now its ready



Regards

For my part, don't worry. Here in hotest lands these glues aren't applicable... Maybe somebody can use in excess without problem!

Regards

[Esteban]

Rigid cable and 1 turn copper foil.

[Esteban]

Hi zenit52.
Advantage of this loop is that it is not so sensitive at erratic signals. I have a electrostatic detector that give me some beeps at some places but i can't understand the exactly point to dig....
If this loop has more gain then maybe the "random" beeps to be continuesly so to have the ability to pin point the coins

Regards

In a place, and only in it place, just beeps 5 times at 4 or 5 meters. I found a 1798 Spanish silver coin. Was with circular loop pistol.

[Esteban]

Here a copper foil and some foils made. One is inside the core.