Lrl from Italy

[mustefa ubram]

Hi mustefa ubram
The signal coming from the VCO of IC1 goes to the TR2 base and then it's amplified by TR3 and TR4, the TR4 collector goes to phase comparator of IC1 with the out of VCO. At pin 2 of IC1 there is a signal corresponding to phase difference, this signal is inverted and amplified by Ic2. Part of signal of VCO goes to ground by C10 - C11 and L1. The "phenomenon" changes the phase and the amplitude of the signal
Best Regards

dear franco
Please complete this more and more clearly explain how to operate the system?
When the signal is produced by the LC circuit?
What makes the phenomenon of changes in signal?
What is the function of capacitor C10?
Whether the VCO signal enters directly into the amplifier?
What is the function of the LC circuit?
Why use two capacitors C8-C9?
If you are is possible to explain fully.
TANK YOU FRANCO

[FrancoItaly]

Hi Mustefa,
I want to start by saying that I do not know much about the true nature of the phenomenon and that what I say is good for my country and I have made known my LRL also because I want to know if it works in other countries.
The LRL is based primarily on a high gain amplifier stage. The signal to be amplified comes from the VCO of IC1 and is applied to the amplifier through C8 and C9. The required value is about 0.5 pF, the value is difficult to find, so I used two capacitors of 1 pF connected in series. C10 has a double function, it carries the signal coming from the antenna to the base of TR2 and it carries part of VCO signal to the ground via L1. LC filter certainly let a signal that has the same resonance frequency or a harmonic or a sub-harmonic. My LRL works only with 2 or 3 turns for L1 and 22 pF, but it's possible that other turns work fine in other country.

Best Regards

[mustefa ubram]

Hi Mustefa,
LC filter certainly let a signal that has the same resonance frequency or a harmonic or a sub-harmonic.
Best Regards

thank you very much dear franco
Please explain this more if it is possible for you.?

[FrancoItaly]

Hi mustefa,
Unfortunately I can not say more, but the important thing for me is that the LRL works well.
Best Regards

[king40]

we need to try and more experience to found information about phenomenon

[mustefa ubram]

hi
i made 4046 complet. I've tested with various rounds coil of 2 -10 rounds.
But it does not workWhen i touch the antenna voltage will decrease
But the real purposenot operating.I do not know nothing

[Nicolas]

Simple Vu Meter for all LRL

Hi friends
I put here this scheme for use with all LRL to see the decrease of DC en ?millivolts
this scheme is for 0 to 5V. if you need other band need change the value of R1 and R2




And I have others Model I put here when I have times

[FrancoItaly]

Hi mustefa,
Sorry but I cannot help, if you touch the antenna and output decreases the lrl is ok, perhaps your test field is not good.
Regards

[brs]

dear franco
In field experiments need minerals underground phenomenon to be

[brs]

And also the need for depth

[FrancoItaly]

Hi brs,
I don't know what you mean, be more clear
Regards

[brs]

Underground metal period of time you need to be a phenomenon or emit ions
Sorry used Translator

[FrancoItaly]

In my test field 5 silver coins emit after about a month 2 meters away but I have not experience for other type of ground, I wait for some notice from who has builded my lrl.

[Salar]

Hi franco
Good day I am Salar from Tehran and new in forums.
I builded two copy of 4046 lrl but both of have one problem.In 3MHZ I don't have (1-6V)AC at point X with Oscilloscope only 0.5 V but when I decreased frequency about 200khz AC voltage appear above 1 V AC and pin 2 have (5.5V)DC . I used BC237 as TR1. where is problem?
Did you tested your quartz lrl in your test field and what was the result?
Regards,
Salar

[FrancoItaly]

HI Salar,
Instead of C8 and C9 put a single capacitor ( 2pF or more) for 1-6 V at point X with about 3 Mhz as vco frquency, BC237 is OK. The quartz lrl works well in my test field and is more easy to build and every quartz in 3 -10 mhz range is OK.

Regards