Lrl from Italy

[zakari]

It's correct, the important thing is that there are no auto oscillations and obtaining the maximum amplification.

thank you very much sir franco

[WM6]

I made many boards always 2 pieces to end up in the Franco project with two copper sides of the receiver, but I put the ground at the bottom.
Stis trials I 1 lrl 6 capacitors of C10 from 18p to 47p and a lrl with 12 capacitors
from 18p to 1n to some I caught metals or some of the other nothing.
while at home the signals caught by 8-9 m. the tester to 4-5 meters.

6 capacitors

https://postimg.org/image/ri4l7gox1/
https://postimg.org/image/q37x4seor/



Nice PCB design. I like your idea to apply some sort of Manhattan-style board construction.

[abdou2014]

:lol:

[PanosP]

I experiment with ferrite 20 c.m antenna coil, the signals inside the house the best I caught but nothing out goals, like a piece 5 c.m the tag coil, centering best, but cuts the distance.
I'm still in the experiments.


https://postimg.org/image/n1bfs1fon/

https://postimg.org/image/lqvh3bt17/

[liudengyuand]

Who can tell us, the machine will react on metals? Why use 8 m crystals? If for 20 m crystals, can it work? thank you

[FrancoItaly]

Hi liudengyuand,

Lrls react on long buried non ferrous metals, better on gold and silver but with too much gain react also to "compass effect", ie it has a signal when the LRL is aligned with the north / south. My lrl works in the range 2.5Mhz - 10Mhz and it is not necessary to change.
The oscillator provides a carrier that is somehow modulated by the "phenomenon", perhaps even works with 20MHz changing but some component, but then again it's not important


Best Regards

[liudengyuand]

thank you

[liudengyuand]

Hello, francoltaly,thank you for sharing this project, I made it, as there is no suitable element, all I use bc547 triode, c1 with no 390 pf, I use 470 pf, its capacity is large, whether to have impact on circuit? I have a dc voltage measurement ic1 3 feet, 6.08 v, the voltage is normal? It is not sensitive to electric spark, I use mobile phone call, it can detect 80 cm interference signal, then how can we know its sensitivity is the best? Please reply, thank you very much

[FrancoItaly]

Hi liudengyuand,

with "dc voltage measurement ic1 3 feet, 6.08 v" do you mean the 7412 IC output? In this case there is an error, with 18V (input from the battery), the output (of course) has to be 12V. All transistors of the type BC ... C are suitable. As for C1 the original value in the diagram is 330pF but other higher values are fine if the oscillator is stable, I recommend a lower value and maybe increase it. As I mentioned earlier the only test needed is to touch the antenna and check whether the output voltage decreases (even a few mV). All the other tests do not help much.

Best Regards

[liudengyuand]

Hello! Yes I measured voltage c18 is 6.08 v, I no problem of supply voltage of 11.25 v, for electric spark, it is how far distance should be sensitive? And the use of capacitance, whether to need to use the capacitance with black points? The 6.08 v is normal, please?

[FrancoItaly]

All the values of the components are calculated for a stabilized voltage of 12V, therefore it is preferable to use 2 9V batteries connected in series (for a total of 18V), not recommend other solutions, otherwise it is necessary to recalculate many values. I think that any kind of capacity you can use and as for the tests is as good as I said in the previous post.

[liudengyuand]

Would you please tell me specifically c18 volts dc voltage value should be in? thank you

[FrancoItaly]

It's good in the range 4 -6V

[liudengyuand]

Because I can't watch video files on youtubu, I would like to request you to send a copy of your machine test video to me, mp4 format, my email dds118@foxmail.com, thank you

[FrancoItaly]

I have no video by myself, tomorrow I try to send you a youtube video by other members of the forum.

[liudengyuand]

Hello! Due to network problems, I can't watch youtube video, I can only watch mp4, if who can give me email mp4, I thank you very much?

[FrancoItaly]

Yes tomorrow I will do, now I have no more time.

[folharin]

Tell me the members that mounted on which objects the lrl is sensitive, when touching fingers antenna does not detect, only with metal leaning on the antenna lrl whistle

[liudengyuand]

Why I do circuit antenna with fingerprint, it did not respond? Only when talking on the phone near the l1. It didn't have a reaction, low sensitivity, how to get to the induction of metal that weak signal?

[FrancoItaly]

You have followed the procedures that I mentioned?

[FrancoItaly]

Hi liudengyuand,

I can not send the email, I received this email:
"The remote mail system said: 550 Mail content denied. http://service.mail.qq.com/cgi-bin/help?subtype=1&&id=20022&&no=1000726"

Best Regards

[liudengyuand]

Hello, please send to l2497003283@sina.cn, thank you

[FrancoItaly]

Ok

[FrancoItaly]

Sorry but also this Email address is not working.

[liudengyuand]

l2497003283@sina.cn is correct, I can receive the other email, your email problem?

[FrancoItaly]

I don't think, but I have send a msg with another Email. confirm if you receive.

[liudengyuand]

Ok

[liudengyuand]

I now face a problem, c18 voltage at 6.58 v, I reduce the capacity of c1 to 220 p, the decrease of the output voltage without any, c2.3.4 these three capacitance is I use 9 3 p series, I disconnect c4 and tr2 the base, the decrease of the output voltage or no, excuse me how should I solve this problem?

[FrancoItaly]

Hi liudengyuand,

if with quartz disconnected you have a DC output (more than 6V at C18) means the the stage is auto oscillating, so you have to reduce the gain by reducing C13 and / or C14. if with quartz disconnected you don't have a DC output disconnect C4 and connect quartz and if there is more than 6V DC output (this is your current case, I think) means that there is a parasite coupling and/or too much gain then reduce C13 and / or C14. It's better a double side PCB with the lower side connected to ground.

Best Regards

[liudengyuand]

Thank you for your guidance, I will slowly to solve the problem

[zakari]

Hi dear francoitaly

I made two sensor of your sensor stage similar together and components are equal
I named these A and B
when i touch antenna of A out voltage drops 20miliv and I touch antenna of B voltage drops 150 mili v

what's your opinion about this difference

thank you very much for your guidance

best regards

[liudengyuand]

I disconnect crystal, the output circuit of 0 v, I might be graffed in crystal, circuit output is 6.58 v, I remove the c13, circuit output is 5.1 v, if it's not c13, it to the actual impact on the way to detect metal? Where is my question? Is a question of tr3?

[d4rkh00d]

Hey FrancoItaly

Can I ask an schematic diagram from your 10 LED using LM3914? I'm not really good in electronics but I can Follow instructions from the schematics. Thank you.

[FrancoItaly]

Hi zakari,

The behavior of the two lrls is normal and is part of the component tolerance.

Best regards

[FrancoItaly]

Hi liudengyuand,

the amplification of sensor stage It depends mainly on the "beta" of the transistors (TR2-TR3-TR4) and therefore there will always be differences between two LRL with the same components. Balancing C13 and C14 we can get the right gain. 5.1V is Ok if touching the antenna the output drops down.

Best Regards

[FrancoItaly]

Hi d4rkh00d,

I'm not in Italy and I don't have the LM3914 display schematic, here I post a generic schematic, with reference to display (3leds) stage you must connect IC1A output to pin5 LM3914, for better adjustment can add between P1 and ground a resistance of 68K (or more).


Best Regards

[liudengyuand]

When I touch antenna, why the output voltage is higher, not lower, it is 5.17 v, when I touch antenna, it changes to 5.18 v, is this normal?

[FrancoItaly]

Usually the voltage drops down 10mV or more, perhaps you have little gain. Your PCB is double face?

[liudengyuand]

I was welded with a universal plate, not a double sided, but why is it rising instead of falling? Will you touch the antenna board, the voltage from the number of changes to the number v?

[zakari]

Hi franco

I assembled sensor stage and dis play stage .now my out put voltage is 5.34v and i touch the antenna led turn off

is this voltage is normal or is high?

is it necessary to reduce the out put voltage?

I can't test at test field because i am far from test field

[zakari]

Usually the voltage drops down 10mV or more, perhaps you have little gain. Your PCB is double face?
yes sir my pcb is double side

[FrancoItaly]

Hi liudengyuand,

I think there is little amplification because of the universal plate. In fact it is not possible to increase the gain without the stage becomes to self oscillate. As I said it is best to use a double-sided PCB.


Best Regards

[FrancoItaly]

Hi zakari,

Your lrl is OK.

Best Regards

[liudengyuand]

Please tell me, when the hand touch the antenna, the output voltage should probably change from the number of volts to the number of volts?

[FrancoItaly]

The change is not critic, the important thing is that there is a change, if not the cause may be little gain or self osclillation.

[liudengyuand]

Please tell me, when the hand touch the antenna, the output voltage should probably change from the number of volts to the number of volts?

[liudengyuand]

I will design a double-sided pcb, I would like to ask, pcb on both sides of the need for large area copper and grounding? Or only need a large area of ​​negative copper? Thank you

[d4rkh00d]

Hi d4rkh00d,

I'm not in Italy and I don't have the LM3914 display schematic, here I post a generic schematic, with reference to display (3leds) stage you must connect IC1A output to pin5 LM3914, for better adjustment can add between P1 and ground a resistance of 68K (or more).


Best Regards
Attached Images




Thank you very much FrancoItaly

[FrancoItaly]

about 10mV or more, Ie 5.20 to 5.10V or 5.05V.

[zakari]

Hi zakari,

Your lrl is OK.

Best Regards
thanks alot froncoitaly

[FrancoItaly]

Hi liudengyuand,

On one side of PCB you must solder all the components and the other side must be completely covered by copper and it is connected to Ground.

Best Regards

[liudengyuand]

FrancoItaly，thank you

[payam20]

here my pcb files
its 2bl side ( one side as franco said ground )
i put each component where to have the least effect to other one . becuase of its ground it have to much low noise .:)
what do you think dear franco . need any changes ??
sry for my english :frown:Untitled.jpg (http://www.longrangelocators.com/forums/attachment.php?attachmentid=19870&stc=1&d=1479704300)

[pigeon]

hi

thank you very much.nice job:)

[liudengyuand]

payam20，Hello, your PCB is positive and negative are copper? Or only the reverse side of copper? Please answer, thank you

[zakari]

hi payam20

my friend improve these items

1-out put of reg7812 connected the ground !!!!

2-connecte r=330r series with r=6.8k out put of collector tr2

3-improve out put collector tr5

[payam20]

hi payam20

my friend improve these items

1-out put of reg7812 connected the ground !!!!

2-connecte r=330r series with r=6.8k out put of collector tr2

3-improve out put collector tr5
thank you :)
i will correct it
but i didnt understand what you mean by: improve out put collector tr5
and for number 2 . it make no differences as i have tested too . but i will do it as it is

[payam20]

payam20，Hello, your PCB is positive and negative are copper? Or only the reverse side of copper? Please answer, thank you
one side as franco said completely ground .and other side have ground zone too .

[zakari]

hi payam20

how are you?

if your pcb is according franco' schematic you have to put all components in schematic

if you have changed schematic or pcb you must declare here

[payam20]

hi payam20

how are you?

if your pcb is according franco' schematic you have to put all components in schematic

if you have changed schematic or pcb you must declare here
yes you are right . i put it right now as schematic.
check it again plz:) maybe i have forgotten s.th

[payam20]

problme solved :cheers:
here you are
!Untitled.jpg (http://www.longrangelocators.com/forums/attachment.php?attachmentid=19878&stc=1&d=1479745752)

[payam20]

hi

thank you very much.nice job:)
your wellcome:cheers:

[pigeon]

your wellcome:cheers:

:):D:thumb::cheers:;)

[liudengyuand]

Someone made the experiment effect? Do you have any response on metals？

[mokkethon80]

Hye Guy is this work or not ,,,please show to me schema and how to Made ,thx

[FrancoItaly]

Hi mokkethon80,

Here I repost original schematic e sensor stage PCB.

Best regards

[mokkethon80]

thnk franco..are hav your schema show to me i try made the best when i can.

[sakher]

Hello
i have finish build the device.
it is work with three leds but without sound ( only noise)!! and it is not response to tv or spark .
it is only response to mobile signal .
what is the value of buzzer12v ohm?
when i sure that my lrl is ready to work very good? i mean what is the best experiments
(without buried goal) ?

sorry for alot of questions

[liudengyuand]

Yes, I also made it, the circuit work very well, but did not find it to respond to a long buried metal, I need to confirm whether LRL really useful? Because many people do not have successfully detect the metal

[mokkethon80]

hllo sekhar can u show to me the picture your pcb and all component please n thx

[liudengyuand]

Everybody is good! I succeeded, about 10 meters from the distance, I found a few pieces of silver, its depth in 1.2 meters

[pigeon]

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

[darkman]

Everybody is good! I succeeded, about 10 meters from the distance, I found a few pieces of silver, its depth in 1.2 meters

hi there :)
did u change any thing in the circuit like L1 or C10 , C13 , C14 ?
and what Type of antenna did you Used ?
regards ;

[ouiarabe]

HI
I congratulate you on this good result
liudengyuand
And let me ask you about the PCB that you have realized
thank you

[liudengyuand]

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

[sakher]

Hello my frinds
when i sure that my lrl is ready to work very good? i mean what is the best experiments*(without buried metal) ?

[liudengyuand]

Yes, I am very good, I today again found a pile of COINS in 30 m distance, it is 1.5 metres deep

[ouiarabe]

Yes, I am very good, I today again found a pile of COINS in 30 m distance, it is 1.5 metres deep


I congratulate you, with which PCB you made your GDG with that of Franco italy or that of payam20
thank you in advance

[sakher]

i congratulate you liudengyuand .. good work..
to complet the project you must post some pictures and details
regards for you

[abdou2014]

salad :nono:

[mokkethon80]

not work..😭😭😭

[WM6]

Yes, I am very good, I today again found a pile of COINS in 30 m distance, it is 1.5 metres deep

Probably you are not familiar with valid international measurement units.
You should wrote 30cm distance and 1,5mm deep.

[FrancoItaly]

For once I agree in part with WM6, I feel much more reasonable 3 meters away and 15cm deep.

[liudengyuand]

This is not a simple project, it requires a reasonable PCB, use with everyone there is huge difference between components, you need to carefully check, 1 pf capacitor, enough to affect your output, distance is not wrong, I said detected 30 m away a pile of copper wire, its depth of 1.5 m

[FrancoItaly]

Hi liudengyuand,

You knew where the copper was buried? There was no need to dig?


Best Regards

[sakher]

may be it is cables to suport the area with electricity!!

[liudengyuand]

Different PCB output voltage is not the same, I double pane of the output voltage is 1.86 v, but it has the sensitivity to detect metal, if increase the capacity of c2, the output voltage will rise, detection of metal is the same, so there is no relationship between the output voltage of the circuit

[FrancoItaly]

C2 doesn't influence the gain of the stage, but only the amount of 8Mhz signal that it's amplified. It's necessary to increase C13 and/or C14 for have more gain.

[sakher]

C2 doesn't influence the gain of the stage, but only the amount of 8Mhz signal that it's amplified. It's necessary to increase C13 and/or C14 for have more gain.

I have c13=c14=500pf can i increase it to 600pf ?

[abdou2014]

Yes you can :)

[sakher]

thank you abdou2014

[volverint]

Yes, I am very good, I today again found a pile of COINS in 30 m distance, it is 1.5 metres deep

Do you share the project ?

[liudengyuand]

I am improving it, I think is more convenient to adjust the machine, not to question its depth, it is better than any pulse machine to depth, a silver 20 mm in diameter, if it has a long time, it can reach at least 2 m depth and scanning distance of 20 meters

[mokkethon80]

liudengyuend..where ur proyek picture please show to me.thank

[liudengyuand]

Because my English is not good, don't send pictures in this BBS, I uploaded several times have failed

[volverint]

Because my English is not good, don't send pictures in this BBS, I uploaded several times have failed

thank you liudengyuand but we are waiting :)

[Qiaozhi]

Because my English is not good, don't send pictures in this BBS, I uploaded several times have failed
It is simple to upload images to the forum.
Click on the "Manage Attachments" button, browse to the image on your computer, and select "Upload".

[afshin]

This is not a simple project, it requires a reasonable PCB, use with everyone there is huge difference between components, you need to carefully check, 1 pf capacitor, enough to affect your output, distance is not wrong, I said detected 30 m away a pile of copper wire, its depth of 1.5 m
liudengyuand , your saying is
contradictory! First you said about detection a pile of coin then said a pile of copper wire!!!!!!!! What do you mean?
You forget your saying soon!!!!

[liudengyuand]

Please carefully read my articles, I have no contradiction, I found the coppers, also found the silver COINS, if you believe it, can also not letter, you do not succeed? Very simple, more experiments

[ouiarabe]

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

hi everyone

Hello liudengyuand,
You now have 32 participations in English. You have read and written in English, but to help your friends how they helped you, you say: << My English is not good >>
It's easier to say I do not want

[mokkethon80]

yes u rigth afshin..what she say...soon.😂😂😂

[payam20]

hi everyone

Hello liudengyuand,
You now have 32 participations in English. You have read and written in English, but to help your friends how they helped you, you say: << My English is not good >>
It's easier to say I do not want

or say:i cant help!
is it too hard to take picture or say what you have done!
or maybe you just......as every one think.

[brs]

Hello my friends
here in this planning error

http://www.3rbz.com/uploads/86b7b7908cbc1.jpg

[payam20]

Hello my friends
here in this planning error

http://www.3rbz.com/uploads/86b7b7908cbc1.jpg

where?

[brs]

http://www.3rbz.com/uploads/f0e5e74fabf92.jpg

[mokkethon80]

woww.cool..pictr....is this real ..or not.work or not

[payam20]

http://www.3rbz.com/uploads/f0e5e74fabf92.jpg

:):lol:did you ever seen schematic
and 100n capacitors beter read about theme:D
just for led use wire from +12 and put 1k to every possitive of led pin
as many have made this pcb they said best pcb up to now:cool:

[payam20]

woww.cool..pictr....is this real ..or not.work or not

do it and see :D

[mokkethon80]

😂😂😂doit 3cm..deep..

[taxma1981]

hi everyone

Hello liudengyuand,
You now have 32 participations in English. You have read and written in English, but to help your friends how they helped you, you say: << My English is not good >>
It's easier to say I do not want


:lol::lol::lol:

[zakari]

😂😂😂doit 3cm..deep..

hi every body

payam20'pcb work very well:cool:

[zakari]

hi payam20

please put your new pcb here

that one you put in iranian forums

that is working excelent;)

[du6r]

dear Franco (http://www.longrangelocators.com/forums/member.php?u=691)

When i be close to circuit i notes that voltage is down and when i get away from it the voltage is rise so i cant decide if the voltage is zero at the output ( when i remove the quarts )
the read of voltage to circuit is in mini volt but away off circuit its about 1.2 v
but when i but quarts the voltage when i be near to the circuit is about 5-6 v
also when i get away from it the voltage drop down to 3v ?????????????????? :(

c13 = 3.3n
c14 =4.7 n
on place c2 c3 c4 is 1 single capacitor 1p

one more thing in working place all voltege are same reading up but when i get out the room in the (test field) evrything is change the output is near 0 volte

[FrancoItaly]

I think that the stage is self oscillating, try to decrease C13 and C14 to original value (560pF). If in open air you have 4-6V (DC output) and if you touch the antenna the signal decreases, then the lrl is ok.

[sakher]

Hello All

Is FrancoItaly device can detecting the target if it was within pottery vessel or wooden box?

[FrancoItaly]

I don't know, I have no experience. I suppose that in an airtight container is difficult that the phenomenon has origin.

[du6r]

I think that the stage is self oscillating, try to decrease C13 and C14 to original value (560pF). If in open air you have 4-6V (DC output) and if you touch the antenna the signal decreases, then the lrl is ok.

thank you i will try

regard

[Mike(Mont)]

I had trouble uploading also. Never did get it. I figure too many pixels. Does anyone know the size limit? My camera has a size setting.

[zakari]

hi all
thank you mr franco

i sure frnco's lrl work very well i revealed the copper from 9 meters distance and 60 cm depth

but i have some problems

1-the 3leds display isnt suitable maybe vu meter is better

2- reaction of my device is low when i sense a point and go far the leds not turn off

3- point pointer for me is impossible when i stand above target the led not turn off

i apply digital volt meter panel with 0.01 accuracy and connect to pin 1 of ic1a

sir franco

please put here vu meter schematic with high accuracy

can you explain about point pointer beacase i cant see the you tube videoes

[FrancoItaly]

Hi zakari,

I don't have a Vu meter schematic but you can simply connect at the output of the first operational amplifier (IC1A), instead of the comparators. However I do not consider it necessary to use a Vu meter. As it regards the slowness in the response of the LEDs, perhaps you have put too great a value for C1 (22nF), and decrease the value of C17 and C18 in the sensor Stage, from 100nF to 3300 pF.

Best Regards

[abdou2014]

:)

[liudengyuand]

Have more friends experiment a success?

[mokkethon80]

yes.me to cant work lool succes.nobody cant help this projek complete..in my land evebody need fin the tresure the gold from ww2 japanese take the gold in the mautain seve in the hole but nobody cant fin ths gold. thats way we need this projek..but is not working😭😭

[FrancoItaly]

Hi all,

I have designed new power stage, more simple with 2 transistors instead of 1 IC. New DC amp with 1 led with variable gain and the possibility of later add 3 leds display. The latter stage is formed by transistors and not by operational amplifiers and it's more versatile since it allows to add other LEDs without modifying those already present.
Since I am not in Italy, and so I do not have my lab, I only simulated the circuits but I have not made. However they are very simple and there should be no problems.

Best Regards

[FrancoItaly]

Here di other files

[mokkethon80]

where..the new projek

[zakari]

HI FRANCOITALY

thank you so much for your new power and display stage

best regards

[darkman]

hi franco bro :)

thx's for Additions ;

* what is the point of using c2(100nf) between pin4(the Ground) and pin8(the power) of ic1 in DC Amp. stage ?
so we got now 4 leds instead of 3 leds ?

*why you using D1,D2 and D3 instead of A less value of ZD2 in 3 leds display stage ?


regards **

[FrancoItaly]

C2 avoids self oscillations of IC.
I use D1, D2 and D3 only because I think it's more difficult to find low values for the zener diode.

[darkman]

C2 avoids self oscillations of IC.
I use D1, D2 and D3 only because I think it's more difficult to find low values for the zener diode.
thx bro :):)

[zakari]

hi abdou2014

i couldn't send files to your email i put here

designer of this digital display is mr hadi magnet

he allow me to put here

[zakari]

hi abdou 2014

this video is provided with mr hadi

[zakari]

R22=1.8K
R23=1.5K
R27=2.7K
R24=100

[abdou2014]

Thank you :)

[volverint]

hi abdou2014

i couldn't send files to your email i put here

designer of this digital display is mr hadi magnet

he allow me to put here


Hi Zakari

Can you share PCB ?

[FrancoItaly]

Hi all,

A member of this forum suggests a change to the input resonant circuit L1 / C10 (2.2nF) . It works just as well in his country and can be good for people who can not get my LRL in their country.


Best Regards

[liudengyuand]

When l1 fixed, we should have a formula to calculate the c10 with how much capacity of the capacitor, because there is no way this circuit using the waveform and frequency of the oscilloscope measurement c10

[FrancoItaly]

Hi liudengyuand,

the only way to find the best frequency is to try on the test field, by adjusting the core of L1 and varying the capacitance C10.

Best Regards

[liudengyuand]

But I think we should have a range of frequencies, so easy to choose components and measuring circuits work is good or bad

[FrancoItaly]

The frequency range of the phenomenon is from 60Khz (or less) to infrared. I think that each country has certain frequencies that work better than others. The only way is by trial.

[du6r]

dear FrankoItaly
I changed
c13 = 100n
c14 = 100n
on place c2 c3 c4 is 1 single capacitor 1p

The result is 5v at output :)
when i touch antenna voltage rise in mili volt :D

i put down underground two rings of silver 20 cm depth for 15 days at home

the device detect them at 1 meter away hardly

i get out to test filed with lrl to detect 2 kilograms of copper underground since 1 year depth 25 cm but nothing happen

does your lrl detect copper ?????????

Regard

[FrancoItaly]

I think that your lrl is ok, as regards copper I don't know, in my experience my lrl detects copper as other forum members said. You may try other frequencies for L1/C10.

[du6r]

I think that your lrl is ok, as regards copper I don't know, in my experience my lrl detects copper as other forum members said. You may try other frequencies for L1/C10.


i will try change L1/c10

also i forget mention that also there is some Aluminum underground since two year and lrl didn't detect them

thank you

[FrancoItaly]

I have little experience on a real field, in my test field I detect gold and silver and in a real field a brass bullet. Unfortunately I do not have time to do other tests.

[FrancoItaly]

100 nF for C13/C14 it seems to much, try 4700pF or less.

[du6r]

100 nF for C13/C14 it seems to much, try 4700pF or less.

i tried that but voltage in output 1.5 - 2 v

the best way to get output 5v is 100n ( for this lrl )

[FrancoItaly]

Also 1.5 may works well.

[du6r]

i will try

[liudengyuand]

I found the way to distinguish between the metal

[liudengyuand]

Use different lengths of antenna, can effectively distinguish between gold, silver, copper, iron and other metals

[du6r]

Use different lengths of antenna, can effectively distinguish between gold, silver, copper, iron and other metals

i notes that its true :D

[darkman]

Use different lengths of antenna, can effectively distinguish between gold, silver, copper, iron and other metals

Nice work buddy ..
Just need to know whats the value of c13 , c14 in your lrl ?:)

[liudengyuand]

This circuit at least tens of thousands of people around the world have done, but few of success

[mustefa ubram]

hi to all
i come back.
franco I got about 40 pieces of silver buried 6 months ago.At a depth of 25 cm.Yesterday I did a test.Unfortunately no results found.I tested a different direction & with variable cap Again, unfortunately,i did not result:frown:I am disappointed with this device.
What do you think Franco??????????

[liudengyuand]

Don't despair, there are too many people in the failure, continue to work hard

[darkman]

Nice work buddy ..
Just need to know whats the value of c13 , c14 in your lrl ?:)

again liudengyuand ?

[FrancoItaly]

Hi Mustefa,

may be you have to try different combinations of L1 / C10, you must also check that the LRL has the maximum amplification possible. As I said you have to adjust the gain until you see the effect compass and then reduce it. You've got the compass effect?

Best Regards

[liudengyuand]

I think we have to do a transmission circuit, use this circuit as a receiving circuit, maybe the effect will be better

[mokkethon80]

😂better..

[mustefa ubram]

Hi Mustefa,

may be you have to try different combinations of L1 / C10, you must also check that the LRL has the maximum amplification possible. As I said you have to adjust the gain until you see the effect compass and then reduce it. You've got the compass effect?

Best Regards
franco
What is the purpose of the compass effect?

What should it be?

[FrancoItaly]

The compass effect is a drawback which occurs when there is too much amplification and is not due to a malfunction of LRL. You can avoid only by decreasing the amplification.

[abdou2014]

I noticed when building Franco LRL we have two type of receiver
The first is very sensitive to all that is static or magnetic
The second is not influenced by electromagnetics like television, on the other hand it detects the scalar field as the spark of an electrical contact .
Naturally it is the second that reveals the phenomenon
Mr Franco
How to convert the first LRL to the second LRL ???

[mustefa ubram]

The compass effect is a drawback which occurs when there is too much amplification and is not due to a malfunction of LRL. You can avoid only by decreasing the amplification.
How to test the effect of Compass?

[FrancoItaly]

Hi abdou2014,

My lrl has only a type of receiver, the phenomenon is picked up by the antenna and it is an electromagnetic signal or an electrical signal.

Best Regards

[FrancoItaly]

Hi Mustefa,

The compass effect is due as already mentioned the excessive amplification and manifests as a signal that occurs in the north / south direction always with the same intensity by moving in this direction.

Best Regards

[liudengyuand]

Why nobody speak, disappointed?

[mokkethon80]

dont think tomuch😂

[darkman]

Why nobody speak, disappointed?

Because all who Made, franco lrl (aworking 1) .. just like you , are not Answering our questions about changing component's :frown: ,, just franco did ,, thx

[liudengyuand]

Because of the machine, I got a huge wealth, I detected a lot of gold and silver and bronze, if you haven't succeed in doing, you can ask me why, I will guide you how to adjust

[darkman]

Because of the machine, I got a huge wealth, I detected a lot of gold and silver and bronze, if you haven't succeed in doing, you can ask me why, I will guide you how to adjust

Ok , my lrl detect florescent lamp and mobile signal but didn't detect bored copper and selver , output voltage=5vdc , guide me how to adjust ;)

[taxma1981]

hi,franko this lc circuit it ok for more sensitive?:lol:

https://postimg.cc/image/i8ckyibjl/

[liudengyuand]

Voltage output size is no relationship, if you are using a single sided PCB its output voltage is much higher than the double coated copper PCB, the key question is how to capture the metal signal

[liudengyuand]

Who need help can leave your E-mail, I'm not familiar with this BBS, will not send documents and pictures

[FrancoItaly]

You must try.

[taxma1981]

hi,franko this lc circuit it ok for more sensitive?:lol:

https://postimg.cc/image/i8ckyibjl/

Frankoooooo

[FrancoItaly]

I repeat, you must try. For the moment I cannot make experiments.

[taxma1981]

Thanks franko

[liudengyuand]

fran……You don't do any test, how do you know the LRL is useful? You listen to other people say?

[FrancoItaly]

Hi All,

I do not remember if I said on the forum that is useful to shield the entire lrl (handle included) with aluminum foil attached to the ground of the entire circuit (negative supply). A member of the forum pointed out to me that holding the LRL with both hands the signal increases in intensity and I confirm that I had also noticed this.

Best Regards

[liudengyuand]

So why not use the metal case directly?

[FrancoItaly]

It's another possibility, for me it is more easy to build the box and the handle with plastic material.

[mokkethon80]

i hope succes guy..😊

[liudengyuand]

I don't think 358 adjustment is very convenient, in the circuit needs to be improved

[liudengyuand]

In the first few pages of BBS, useful 4046 production of the machine, it is what principle? Effect is better than with 8 m crystals? Who knows?

[FrancoItaly]

The performances are equal, with the 4046 version are measured the phase differences while with the version 8MHz quartz are measured the variations of amplitude. My initial idea was to compare the phase changes with the amplitude variations in order do get some discrimination but I have not found anything useful.

[liudengyuand]

How to measure the oscillation frequency of L1 and C10? I have no way to measure with the oscilloscope, how can we know that the oscillation frequency? Whether it needs to work in the resonant state. We need to further understand its principles

[FrancoItaly]

There is no need to know the resonance frequency, it can be calculated theoretically.

[liudengyuand]

Only forever if you don't know the resonant frequency, then make the adjustment, there is another important issue, we need to an effective signal, and a similar metal signal device to test the sensitivity of the machine, such as mobile phones, or radiation signal switch power supply, so what kind of signal is best for the test

[FrancoItaly]

The only effective test is to try in a test field with buried metal at least a few months.

[liudengyuand]

Bury the metal is many, many months, there are many life rubbish will be buried in the ground, the key is we want to know what metal is the signal, the BBS from 2013 to now, not a few people make success,

[FrancoItaly]

Sorry but I have nothing new to add to what I said earlier in the forum.

[liudengyuand]

You should go to experiment and test effect rather than listen to a somebody else say, only know his own experiments

[FrancoItaly]

Unfortunately are not in my country and I have no means available to do tests, maybe you begin burying a metal, you'll see that a few months pass quickly.

[liudengyuand]

Any country living garbage, do not need to personally buried metal, garbage there will be a lot of metal buried for a long time,

[takhslambos]

Is this lrl can detect iron rasty one buried 70 years in the ground?some one found any iron metal?from a distanse?

[liudengyuand]

It is not to respond to a metal, it is only to respond to a certain magnetic field

[mustefa ubram]

Hi Mustefa,

The compass effect is due as already mentioned the excessive amplification and manifests as a signal that occurs in the north / south direction always with the same intensity by moving in this direction.

Best Regards
hi franco
What is I did not realize that the effect of Compass.Please explain more and clearer.
How have the effect of Compass?
How do I test for the effect of Compass?

[liudengyuand]

Don't all listen to him, he had no real experiment

[FrancoItaly]

Hi Mustefa,

1- the compass effect is a defect.
2- appears only if the LRL has too much amplification.
3- manifests walking in the north / south or vice versa direction and amplitude of the signal remains constant.
4- do not know the cause, probably it has to do with the Earth's magnetic field.
5- the only utility is used to establish the maximum amplification of the LRL.
If I was not clear enough you have to ask to liudengyuand.

Best Regards

[liudengyuand]

You haven't the actual experiments, you are talking, you doesn't even have a decent PCB

[FrancoItaly]

It is true and then?

[ouiarabe]

It is true and then?



Mr. Franco
I thank you very much for your patience.and for all your time lost for the good of this forum and its members.
This is the smallest thing we can tell you
And that we are not all ungrateful

[FrancoItaly]

Hi ouiarabe,

Thank you for your words, the spirit of this forum is based on the collaboration of all, every experience and every piece of advice is welcome.
In this regard I want to anticipate that a member of the forum soon will announce some improvements.

Best Regards

[liudengyuand]

Is a principle on the radio

[sakher]

Hello Mr. Franco
We are thank you very much, and all respect to you
You taught me a lot of all details of this project
the work is good and i am now prepare the case of the device .

[FrancoItaly]

Hi sakher,

Also to you thank for your words and as I said earlier there will be some news from a member who rarely seen on the forum, but that is very present in his laboratory and in open field. I am very grateful to him because unfortunately I do not have a chance to experience being away from home.

Best Regards

[liudengyuand]

Thank you since 2013, so many fans around the world wasted too much energy and time.

[dream_man]

Thank you since 2013, so many fans around the world wasted too much energy and time.
liudengyuand (http://www.longrangelocators.com/forums/member.php?u=8710) dear respected friend, you are annoying the designer and other members by your disappointing posts. Please be aware what you say.
This man has freely shared what he experienced and there was no force to us for making that. Ample evidences from youtube or other videos consistently show that this device works properly. So please respect. Even there was no result, you should not talk like this. There is no loan on Franco.

[liudengyuand]

If you are more careful, you will find that the BBS of the video, not react to metal, it's just on the surrounding environment in a certain field, if you do the machine, you will find that, when you to the field experiment, it will alarm everywhere, the only change the magnetic field around you, occurring in the course of reaction, when you in the long buried metal, it will not have any reaction, the machine, only react to the alternating magnetic field, said that straight point of view, it is a radio circuit, is unlikely to have handed in the edge of the magnetic field, because the metal so you adjust the l1 and c10 is not have any effect, because the role of l1 and c10 is a frequency selective, only alternating magnetic field can produce induced current on l1, the closer and the resonance frequency, the induction signal, the greater the size but only if the metal is unlikely to occur the alternating magnetic field, so, don't be fooled by the video on the BBS, from 2013 to now, no one really use it can detect metal, said useful, just a lie, the lie can boost the enthusiasm of the people, let more people to study, exchange experience, including author, he didn't do any experiments, he just listened to some lies, easily believed them, blindly advocate it is useful, of course, the authors have no malicious, but for many fans all over the world, is a kind of vicious circle, always assume that somebody else's success, they have no success, in fact, anyone don't succeed, because of, can't be successful, that I personally experience and opinions

[FrancoItaly]

Hi All,

It is true that I have little experience in real research (I have no time for this because of family reasons) but I spent a lot of time in the test field with some silver coins buried about 25cm. The signals were clear and unambiguous, but I admit that there were also many signals in the area. But it was a land cultivated for many years and then abandoned so there were many objects (including non-ferrous), buried. I verified this with the metal detector. I do not deny that my LRL (like all others) is critical to build and develop, it comes to amplify a signal (the one coming from the oscillator) many times until the self oscilation limit. If the PCB is poorly designed the stage will go into oscillation before you could get the amplification needed. In addition, the L1 / C10 value are critical and I can not guarantee that they are valid for each country, so it is necessary that everyone do the tests.

Best Regards

[zakari]

hi all

liudenguid

I am sorry for you .may be you want to get more information from designer(franco) but this is not way

I am from middle east no italy
I declare I revealed copper and silver and bronze with this lrl

only i couldn't to revealed gold

may be your information isnt complete or your lrl has problem:nono::nono::nono:

[liudengyuand]

In principle, it is of no scientific reason,

[liudengyuand]

Problem is everyone not to tell the truth, maybe he would joke said, he is successful, this will cause a lot of people believe that, but in fact he didn't succeed

[liudengyuand]

Below, please make the feel a friend without effect

[PanosP]

Thank you since 2013, so many fans around the world wasted too much energy and time.

i don't know mister franco,he is from italy i'm from greece...

https://www.youtube.com/watch?v=BUzyKuUQExE

https://www.youtube.com/watch?v=eUKaU7awl18

https://s27.postimg.org/4kad80dur/20160701_101240_Medium.jpg[/url]image share (https://postimage.org/)

https://www.youtube.com/watch?v=8hYI7-10ROg

if that is a lie then you are right

[WM6]

You do not need LRL to get such targets everywhere in civilized world.
You need simple to dig hole everywhere and get such crap.
This video does not prove anything.

[taxma1981]

You do not need LRL to get such targets everywhere in civilized world.
You need simple to dig hole everywhere and get such crap.
This video does not prove anything.



https://youtu.be/KYkCVakeJWY

https://youtu.be/nwDZBcncd2I

https://youtu.be/JFzrKP8zh9E

:lol:

[liudengyuand]

Yes, this video can't prove anything you find evidence of metal

[FrancoItaly]

It is true these videos, as well as any other video, prove nothing, since each video can be manipulated, but here we are in a forum dedicated to lrls and I see no compelling reason why a member should lie on the operation of his LRL. There are no economic interests if not perhaps the desire to find something of value ...
I understand the disappointment of those who can not achieve positive results but does not justify the fact of accusing the other of lying. I try in every way to help those who did not succeed and I try to understand, for example, because in Greece some members were able to make running my LRL and Geo, who is very capable in this field, he failed.

[ionios]

Μπράβο Παναγιώτη πολύ καλή δουλεία!!
Exellent job,
What about the second antenna?
In your video there are two telescopic antennas
How you connect them?

[liudengyuand]

Don't let more people wasting energy, you don't have tested, you is a lie

[PanosP]

You do not need LRL to get such targets everywhere in civilized world.
You need simple to dig hole everywhere and get such crap.
This video does not prove anything.

What did you think that I would burry a treasure chest for two years and then find it so you would believe me ????

I’m not interested in convincing any one ……
Whomever it may concern can try for themselves

[PanosP]

Μπράβο Παναγιώτη πολύ καλή δουλεία!!
Exellent job,
What about the second antenna?
In your video there are two telescopic antennas
How you connect them?

Hello friend ionios

Both of the antenas are connected to one but if you use one you find the target better ..

https://s24.postimg.org/slqv96sdx/20160621_211313_Small.jpg[/url]screenshot (https://postimage.org/app.php)

[pigeon]

Hello friend ionios

Both of the antenas are connected to one but if you use one you find the target better ..

https://s24.postimg.org/slqv96sdx/20160621_211313_Small.jpg[/url]screenshot (https://postimage.org/app.php)

NICE JOB;)

[folharin]

Good job!

[abdou2014]

CAN YOU SHOW US THE HAND OF YOUR LRL. NICE GOOB THANK YOU.

[FrancoItaly]

Hi All,
I post here a new power stage and a modular display stage, one transistor for each led, no zener diode, this with the aim to further simplify the display stage and with the possibility afterwards to add other LEDs.

Best Regards

[PanosP]

https://s23.postimg.org/cshy80ufv/20160625_213350_Small.jpg[/url]screen cap (https://postimage.org/app.php)

https://s29.postimg.org/rppev8v5j/20160625_213330_Small.jpg[/url]free jpeg images (https://postimage.org/)

[abdou2014]

THANK YOU :)

[ionios]

Nice job panagioti,
but I have seen you use
Different crystal this one is not 8 mhz,
And the coil you are using is air coil not
Ferrite coil,
You have better result like this?

[abdou2014]

The frequency range of the phenomenon is from 60Khz (or less) to infrared. I think that each country has certain frequencies that work better than others. The only way is by trial.


Please Mr. Franco, how far from the target this frequency can be revealed.
Or what is the maximum range of this frequency from the target ?

[PanosP]

Nice job panagioti,
but I have seen you use
Different crystal this one is not 8 mhz,
And the coil you are using is air coil not
Ferrite coil,
You have better result like this?

8mhz crystal !!!
With ferrite coil did nothing

[FrancoItaly]

Please Mr. Franco, how far from the target this frequency can be revealed.
Or what is the maximum range of this frequency from the target ?

This frequency can not be physically measured, but you can only see the effects on the metal buried varying L1 / C10.

[abdou2014]

I'm not trying to measure, but if I calibrate LC on this frequency, how far from the target I can have results ?

[FrancoItaly]

I'm not trying to measure, but if I calibrate LC on this frequency, how far from the target I can have results ?

the phenomenon has a very wide frequency range, it comes to finding the most suitable, then L1 / c10 must be varied to have the most large signal (DC output). More could not tell you.

[abdou2014]

Thank you Mr Franco !

[liudengyuand]

Don't be silly, it just receive the electromagnetic wave in the air

[abdou2014]

It is you who are silly ,You are not able to build a LRL that works :razz:

[liudengyuand]

That you do, silly force

[mokkethon80]

compaas efek

[sakher]

Hi all

this is my LRL :)

The result which I found I could reduce the effect of the compass only by reducing the threshold or the length of the antenna (not gain!)
There are many signals in the field in the ground behind the house at the village :)

i can centring one of them but I dont dig the ground to discover the goal (Because I wanted to make sure before that)

https://up.harajgulf.com/do.php?img=1431115 (http://GulfsUp.com)

[sakher]

http://store1.up-00.com/2017-01/1484948561631.jpg (http://www.up-00.com/)

[abdou2014]

Congratulations :)

[FrancoItaly]

Hi sakher,

Good work, as I said for better sensibility and stability it is advisable to shield the box and the handle with a sheet of aluminum (one for food use) connected to the ground. You will notice that the sensitivity increases by gripping the handle with both hands.

Best Regards

[liudengyuand]

Don't believe in it to respond to a metal, it is only to respond to a natural electromagnetic field, please the people who had never experiment, don't mislead you

[sakher]

hello my frinds
thank you MR.abdou2014 and MR.francoitaly for replay
This is my notes and settings before search on north-south Axis .
what is your ideas?

19943

[FrancoItaly]

To remove the compass effect you must reduce the overall gain and this can be done by decreasing the gain of sensor stage or by reducing the gain of DC stage or by lowering the level of the threshold. I think the best thing is to lower the gain of DC stage.

[liudengyuand]

You have been in the fart, the somebody else to ask you a compass effect, always can't answer your problems,

[Mike(Mont)]

How long will it take you to understand you are wasting your time trying to convince anyone around here about anything? All you are doing is getting yourself all worked up. My advice: Get over it. I've said these Pistol type locators are not right. No one cares. All you get is a bunch of gawkers, onlookers at a car wreck wanting to see blood and gore but will never lift a hand to help the injured persons.

[Mike(Mont)]

People only hear what they want to hear and disregard the rest. The ego only allows the info it wants to allow in.

You get on one side people who think science and math are God. Some go as far as the capitalize the "s" in the word science. Fact is nothing made by man is anywhere near to God. And it's all based on false assumptions. Just take the basic math idea that the shortest distance between two points is a straight line. Like how could anyone argue with that? Well, to start out, what is a point? Nobody even knows. There is no such thing and there is no way to measure between two points. A blob of ink on a piece of paper is not a point. The very basic stuff is false. Same with all of science. And do you think any of these "science is God" believers would ever admit this? No way in Hell. Guys like Steven Hawkings want to dictate to the rest of the world their B.S.

Of course the other side ain't much better. You get these Ouija Board map dowsers who think they are God. It's all the Great Deceiver at work on both sides.