Lrl from Italy

[Sreekumar]

C6 variable capacitor equalent other motheds

[FrancoItaly]

C6 variable capacitor equalent other motheds

The aim is to decrease the gain of the stage in order to have a stable oscillation but without distortion. The gain depends on several factors, the beta of the transistors, the resistors and the emitter capacitors.
The triggering of oscillations is due to parasitic capacities and is normally an unwanted defect but in our case we try to get it. As it is a bit laborious I thought of an external oscillator and a double-sided pcb with a face connected to ground in order to avoid self-oscillation. Following the help I provided (helps.txt) you get an optimal functioning.

[Sreekumar]

Thank you brother,god bless you.

[tasmen]

Hi to all and happy new year.

Mr Franco i want to build this lrl :

https://www.longrangelocators.com/fo...&postcount=213

Tell me please. The price off capasitor in sensor stage C5, C7, C11, C12, C15, C16, C17, C18
is milifarad or microfarad? this is ceramic capasitor?

Thank you in advance. Happy new year

Tasmen

[FrancoItaly]

Hi to all and happy new year.

Mr Franco i want to build this lrl :

https://www.longrangelocators.com/fo...&postcount=213

Tell me please. The price off capasitor in sensor stage C5, C7, C11, C12, C15, C16, C17, C18
is milifarad or microfarad? this is ceramic capasitor?

Thank you in advance. Happy new year

Tasmen

Happy New Year to all forum members. All the capacitors you mentioned are of the ceramic type and the value is expressed in nano Farad (nF). I post here the warnings for tuning.

[bahrymed]

Help me

Hello
i built the pcb for franco lrl using bc547c but doesn't work.
Where is the problem

[FrancoItaly]

Hello
i built the pcb for franco lrl using bc547c but doesn't work.
Where is the problem

My lrl (like everyone else) only works with metals that have been buried for at least a few weeks or months. It is necessary to have a test field.

[bahrymed]

hello mr franco
I m changed bc547c by bc184c
I finally managed to start the LRL
examines it at home by detecting the MHZ signal
waiting for the examination to the field

[FrancoItaly]

hello mr franco
I m changed bc547c by bc184c
I finally managed to start the LRL
examines it at home by detecting the MHZ signal
waiting for the examination to the field

If at the output of the sensor stage there is a stable signal between about 2 and 5V (DC signal) and touching the antenna the signal decreases even slightly, then the lrl is ready for outdoor tests. It should be borne in mind that there are many sources of false signals inside homes that should not be taken into consideration.

[ali02]

Hi dear Franco I put between Tr1 and Tr3 value of capacitor 1 ..to. 3 pF is good

But on the DC output is between 7 and 9.88V and not 2 to 4V. Yes oscillation is

I put that later because now I have problem with ISIS.

Hi
I am a beginner in electronics, does the PCB that you sent in Franco's answer track the gold buried underground? How many meters deep does it show?(Follow this attachment,lrlfrancobase)
I ask you to forgive me for I am new in this regard.

thank you

[FrancoItaly]

Hi
I am a beginner in electronics, does the PCB that you sent in Franco's answer track the gold buried underground? How many meters deep does it show?(Follow this attachment,lrlfrancobase)
I ask you to forgive me for I am new in this regard.

thank you

I don't understand exactly what you want to know, I advise you to read the older posts. However, I am developing an improved version of my lrl and you will be able to better understand how it works. For those who have already made my lrl I say that it is only a matter of modifying some components.

[ali02]

I don't understand exactly what you want to know, I advise you to read the older posts. However, I am developing an improved version of my lrl and you will be able to better understand how it works. For those who have already made my lrl I say that it is only a matter of modifying some components.

Thank you for your answer, be successful and proud, in fact, I am looking for gold buried underground and I want to know how many meters (depth) your lrl searches for buried gold underground and answers me? What parts of the circuit such as capacitor, resistor, etc. should we change to achieve more depth with high accuracy? thank you

[tasmen]

However, I am developing an improved version of my lrl and you will be able to better understand how it works. For those who have already made my lrl I say that it is only a matter of modifying some components.

We are waiting for these big news !!!
Thank you.

[FrancoItaly]

Thank you for your answer, be successful and proud, in fact, I am looking for gold buried underground and I want to know how many meters (depth) your lrl searches for buried gold underground and answers me? What parts of the circuit such as capacitor, resistor, etc. should we change to achieve more depth with high accuracy? thank you

I don't know how to give you the answers to what you ask me. I have used my lrl very little in actual research. I assume that, as with other types of lrls, the depth can also exceed one meter, but it depends a lot on how long the metal has been buried. These days I am trying some modifications that significantly increase the sensitivity.

[ali02]

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

To build your LRL, do I have to build according to the ''lrlfrancobase.pdf'' file ?
What should I do to strengthen your design?
Is your LRL an ion finder?
Does the LRL become stronger with the placement of the antenna?
Thank you