LongRangeLocators Forums  

Go Back   LongRangeLocators Forums > Main Forums > All-Electronic LRLs

Reply
 
Thread Tools Display Modes
  #1  
Old 11-13-2013, 11:54 AM
FrancoItaly FrancoItaly is offline
Guru
 
Join Date: Feb 2006
Location: Liguria, Italy
Posts: 874
Default Lrl from Italy

Hi All
I post here all the information to build a working (for me) Lrl, the photo is not related to the last Lrl because now I'm not in Italy ( the 3 stylus antenna are not necessary).

Best Regards
Attached Images
 
Attached Images
File Type: pdf display stage.PDF (299.7 KB, 8027 views)
File Type: pdf sensor stage.PDF (294.5 KB, 7190 views)
Attached Files
File Type: txt lrl.txt (2.9 KB, 2831 views)
Reply With Quote
  #2  
Old 11-13-2013, 12:14 PM
FrancoItaly FrancoItaly is offline
Guru
 
Join Date: Feb 2006
Location: Liguria, Italy
Posts: 874
Default

I have forgotten the printed board
Attached Images
File Type: pdf printed board.pdf (81.2 KB, 5099 views)
Reply With Quote
  #3  
Old 11-13-2013, 05:22 PM
Sneshko's Avatar
Sneshko Sneshko is offline
Senior Member
 
Join Date: Nov 2011
Location: Serbia
Posts: 159
Default

Bravo FrankoItaly!!!
Very, very good job.
Congratulations!
...and thank you very much!
Regards!
Sneshko
Reply With Quote
  #4  
Old 11-14-2013, 11:11 AM
FrancoItaly FrancoItaly is offline
Guru
 
Join Date: Feb 2006
Location: Liguria, Italy
Posts: 874
Default

Hi Sneshko
As I said I'm not 100% sure that my Lrl is a "true" Lrl, certainly detects a strong signal around my test targets and in my last search in a mountain field I found 2 pieces of aluminum confirmed by my Spectra V3, but this is not a definitive proof. The Lrl detected also a strong signal at about 15 m but not confirmed by MD but the field was very difficult with many big stones.

Best Regards
Reply With Quote
  #5  
Old 11-18-2013, 01:18 AM
Morgan's Avatar
Morgan Morgan is offline
Guru
 
Join Date: Nov 2007
Posts: 2,426
Default

Quote:
Originally Posted by Sneshko View Post
Bravo FrankoItaly!!!
Very, very good job.
Congratulations!
...and thank you very much!
Regards!
Sneshko
Hello Sneshko

hope all is fine with you

I remember that you get the PDK-2.1 from Goran,well,still not finding nothing ? do you made more field tests?
From a few PDKs that I sold i come to conclusion that your country, Midle East,Italy and Germany need other frequency in the PDK to work fine,and this modification can be done very easy.
Send message for my email and i give you instructions how to adapt a frequency selector in your PDK-2.1
Actualy I build a few PDK-2.3 this with frequency selector,and is much better than the PDK-2.1, it was a PDK-2.1 owner who gave me ideia of frequencies selector , under my instructions he adapt 6 diferent frequencies in his PDK and get good results in field,is from Midle East country.

Others interested after read that ,and want to adapt the Freq. Selector ,also send me email.


regards
Reply With Quote
  #6  
Old 11-19-2013, 11:50 PM
Morgan's Avatar
Morgan Morgan is offline
Guru
 
Join Date: Nov 2007
Posts: 2,426
Default PDK frequencies switch selector

Quote:
Originally Posted by Morgan View Post
Hello Sneshko

hope all is fine with you

I remember that you get the PDK-2.1 from Goran,well,still not finding nothing ? do you made more field tests?
From a few PDKs that I sold i come to conclusion that your country, Midle East,Italy and Germany need other frequency in the PDK to work fine,and this modification can be done very easy.
Send message for my email and i give you instructions how to adapt a frequency selector in your PDK-2.1
Actualy I build a few PDK-2.3 this with frequency selector,and is much better than the PDK-2.1, it was a PDK-2.1 owner who gave me ideia of frequencies selector , under my instructions he adapt 6 diferent frequencies in his PDK and get good results in field,is from Midle East country.

Others interested after read that ,and want to adapt the Freq. Selector ,also send me email.


regards
Here it is how to make the PDK-2.1 with a 3 options switch that can change the 77KHz standard frequency :

1- open the box cover carefuly,and on the right top part of the box you will find the cables who go for the RX coil, this cables as one 6N8 capacitor in paralel ,this cap. is responsable to keep the frequency.

2-cut the RX coil cables near the PCB , and cut the two legs of this 6N8 cap. at midle,and solder in this pins the two cables of the frequencies selector.
Make a hole on top of the box to install the selector.

this simple selector can help ONLY in countries that other frequencies work better than the standard 77KHz.
Reply With Quote
  #7  
Old 11-19-2013, 11:53 PM
Morgan's Avatar
Morgan Morgan is offline
Guru
 
Join Date: Nov 2007
Posts: 2,426
Default SELECTOR

Quote:
Originally Posted by Morgan View Post
Here it is how to make the PDK-2.1 with a 3 options switch that can change the 77KHz standard frequency :

1- open the box cover carefuly,and on the right top part of the box you will find the cables who go for the RX coil, this cables as one 6N8 capacitor in paralel ,this cap. is responsable to keep the frequency.

2-cut the RX coil cables near the PCB , and cut the two legs of this 6N8 cap. at midle,and solder in this pins the two cables of the frequencies selector.
Make a hole on top of the box to install the selector.

this simple selector can help ONLY in countries that other frequencies work better than the standard 77KHz.
Name:  selector%20010.jpg
Views: 17720
Size:  26.5 KB

Name:  selector%20001.jpg
Views: 17799
Size:  24.9 KB

Name:  selector%20003.jpg
Views: 17821
Size:  18.5 KB

Name:  selector%20002.jpg
Views: 17806
Size:  25.7 KB

Name:  selector%20004.jpg
Views: 17730
Size:  20.9 KB
Reply With Quote
  #8  
Old 11-20-2013, 12:18 AM
Morgan's Avatar
Morgan Morgan is offline
Guru
 
Join Date: Nov 2007
Posts: 2,426
Default

Quote:
Originally Posted by Morgan View Post
Here it is how to make the PDK-2.1 with a 3 options switch that can change the 77KHz standard frequency :

1- open the box cover carefuly,and on the right top part of the box you will find the cables who go for the RX coil, this cables as one 6N8 capacitor in paralel ,this cap. is responsable to keep the frequency.

2-cut the RX coil cables near the PCB , and cut the two legs of this 6N8 cap. at midle,and solder in this pins the two cables of the frequencies selector.
Make a hole on top of the box to install the selector.

this simple selector can help ONLY in countries that other frequencies work better than the standard 77KHz.
one little mistake, no need to cut the coil cables,just cut the capacitor 6n8 and connect the selector tho the PINs in the circuit.
Reply With Quote
  #9  
Old 11-19-2013, 11:58 PM
Morgan's Avatar
Morgan Morgan is offline
Guru
 
Join Date: Nov 2007
Posts: 2,426
Default More options selector

Quote:
Originally Posted by Morgan View Post
Hello Sneshko

hope all is fine with you

I remember that you get the PDK-2.1 from Goran,well,still not finding nothing ? do you made more field tests?
From a few PDKs that I sold i come to conclusion that your country, Midle East,Italy and Germany need other frequency in the PDK to work fine,and this modification can be done very easy.
Send message for my email and i give you instructions how to adapt a frequency selector in your PDK-2.1
Actualy I build a few PDK-2.3 this with frequency selector,and is much better than the PDK-2.1, it was a PDK-2.1 owner who gave me ideia of frequencies selector , under my instructions he adapt 6 diferent frequencies in his PDK and get good results in field,is from Midle East country.

Others interested after read that ,and want to adapt the Freq. Selector ,also send me email.


regards
Here is another type of selector with 12 cap. options ,see the values :

Name:  selector.jpg
Views: 18691
Size:  57.2 KB

Name:  IMG_4242.jpg
Views: 17971
Size:  24.0 KB

Name:  IMG_4216.jpg
Views: 18202
Size:  56.6 KB
Reply With Quote
  #10  
Old 11-20-2013, 11:13 AM
michael michael is offline
Guru
 
Join Date: Nov 2005
Posts: 543
Default

Quote:
Originally Posted by Morgan View Post
Here is another type of selector with 12 cap. options ,see the values :

Attachment 18661

Attachment 18662

Attachment 18663
Hi everybody and especially you Morgan.
What a good and neat work!!! It seems very helpful. I again say you my especial thanks and again congratulations for building Such working locator and after-sale services.
Reply With Quote
  #11  
Old 11-14-2013, 07:48 PM
DrTech's Avatar
DrTech DrTech is offline
Member
 
Join Date: Mar 2012
Posts: 47
Default Diode 1n4148

Quote:
Originally Posted by FrancoItaly View Post
Hi All
I post here all the information to build a working (for me) Lrl, the photo is not related to the last Lrl because now I'm not in Italy ( the 3 stylus antenna are not necessary).

Best Regards
Hi FrancoItaly..

The diodes D1 and D2 (1N414 I think it would work better OA91 or 1N34, improve the reception.
Reply With Quote
  #12  
Old 11-15-2013, 10:50 AM
FrancoItaly FrancoItaly is offline
Guru
 
Join Date: Feb 2006
Location: Liguria, Italy
Posts: 874
Default

Hi All
Diodes 1N4148 work well for this purpose, that's about 5Mhz and large voltage, about 3V.

Best Regards
Reply With Quote
  #13  
Old 11-16-2013, 06:27 AM
BENZINAS BENZINAS is offline
Senior Member
 
Join Date: Jun 2012
Location: GREECE
Posts: 106
Default

tell us some details about the lrl , how it works and what is supose to detect , gold , silver , fresh buried , old buried , distances of detection , tell us about the function !
Reply With Quote
  #14  
Old 11-16-2013, 11:10 AM
FrancoItaly FrancoItaly is offline
Guru
 
Join Date: Feb 2006
Location: Liguria, Italy
Posts: 874
Default

Hi BENZINAS
All the Lrl that I know they clams that detect only long time buried metals and my lrl is the same. with 99% certainty I think that in my test field my Lrl detects 5 silver coins at about 2 meters and a small gold bracelet at 1.5 meters. These targets were buried 2 years ago. I have posted here all details for to build my Lrl and I hope someone manages to get my same results. This forum has become just a place where we discuss if the Lrls will work or not. I can definitely say that my Lrl in certain places it emits a strong signal that does not depend on the orientation, or walls or trees. Instead is very sensitive to strong electromagnetic emissions as near transmitter antennas.

Best Regards
Reply With Quote
  #15  
Old 11-16-2013, 02:21 PM
belalhpc belalhpc is offline
Member
 
Join Date: Nov 2013
Posts: 32
Default HI

Dear
I'm glad your experience that you have made and thank your credibility in your view. I hope if you added a video of how the device works. And what price Approximate him if you want to make me a piece.
New note I amateur in this area and look for something cheap, because I do not have a lot of money.
As you know, devices from large companies we can not buy them.
Thank you very much.
Reply With Quote
  #16  
Old 03-16-2015, 12:25 PM
wtrk wtrk is offline
Junior Member
 
Join Date: Mar 2015
Posts: 26
Default

Thnaks...
Reply With Quote
  #17  
Old 03-22-2015, 07:20 PM
darkman's Avatar
darkman darkman is offline
Junior Member
 
Join Date: Mar 2015
Posts: 18
Lightbulb need help plllllllllllllz

Dear FrancoItaly
Thank you for sharing your lrl
I built this one i have silly question how its work ?????
the led is going on and off when i change the value of p3
but p1 and p2 didn't make any change at the led
how to test your lrl ??
how can i know that is working ?

best regard

Reply With Quote
  #18  
Old 03-23-2015, 12:39 PM
FrancoItaly FrancoItaly is offline
Guru
 
Join Date: Feb 2006
Location: Liguria, Italy
Posts: 874
Default

With P1 you change the frequency, the better is about 2.5 - 3Mhz (the max frequency for CD4046). With P2 you change the amplitude of the signal, the better is at point (X) (the TR4 collector) a 2 -4 Volt peak to peak, with the scope you must have a good sine curve, not distorted. If you touch the antenna the output signal must decrease. You must have a test field with buried metals (gold, silver or copper) for at least a few months.
Regards
Reply With Quote
  #19  
Old 03-25-2015, 07:20 PM
darkman's Avatar
darkman darkman is offline
Junior Member
 
Join Date: Mar 2015
Posts: 18
Lightbulb

thx Franco bud for all this info's
i will try my best and will tell u the results very soon

Regards
Reply With Quote
  #20  
Old 04-01-2015, 06:29 PM
du6r du6r is offline
Junior Member
 
Join Date: Mar 2015
Posts: 8
Default how to use lrl

Dear FrancoItaly
you have great work's with lrl
i just built one of your's with (IC)
on manual test with cell phone the led is lighting up
when i touch the antenna the led is get off
when did i know that the lrl is ready to start locating in range field
now is there any video show how to adjustment the p1 > p2 > p3??? or explain how to work with your lrl ? its seem to me its OK with hand test but what about detect metal
underground dose it working with metals in field range
**** From where can i take the signal line for display circuit (I mean the ic lrl)
how do i now that's the lrl is working in field
should the led light when i but golden ring close to antenna ?
too many question in my mind
can i get your e.mail plz i really need to contact with you
Sorry for my bad English
thank you
Reply With Quote
  #21  
Old 11-27-2016, 08:51 AM
mokkethon80 mokkethon80 is offline
Member
 
Join Date: Sep 2016
Posts: 44
Default

hllo sekhar can u show to me the picture your pcb and all component please n thx
Reply With Quote
  #22  
Old 11-28-2016, 12:26 PM
liudengyuand liudengyuand is offline
Member
 
Join Date: Nov 2016
Posts: 94
Default

Everybody is good! I succeeded, about 10 meters from the distance, I found a few pieces of silver, its depth in 1.2 meters
Reply With Quote
  #23  
Old 11-28-2016, 01:30 PM
pigeon pigeon is online now
Member
 
Join Date: Mar 2007
Posts: 71
Default hi

Quote:
Originally Posted by liudengyuand View Post
Everybody is good! I succeeded, about 10 meters from the distance, I found a few pieces of silver, its depth in 1.2 meters
nice job
Reply With Quote
  #24  
Old 11-28-2016, 09:49 PM
ouiarabe ouiarabe is offline
Member
 
Join Date: Oct 2012
Posts: 55
Default

HI
I congratulate you on this good result
liudengyuand
And let me ask you about the PCB that you have realized
thank you
Reply With Quote
  #25  
Old 11-29-2016, 06:21 AM
liudengyuand liudengyuand is offline
Member
 
Join Date: Nov 2016
Posts: 94
Default

My English is not good, I can't upload pictures, if you are interested, we can email communication together
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 07:33 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.