Lrl from Italy

[Kazem]

Yes, I have made both a single inductor and two inductors. Do you think it is better to use the same coil as the original design because of matching the impedance of the antenna with the circuit?

[FrancoItaly]

Dear Mr. Franco, thank you for your answer, another experience I had was several different types of antennas, including the diameter of one centimeter and less, all of which were up to one meter. Some antennas receive the polarization effect very little, is this good or is it possible that it is weak in receiving the phenomenon The main point is that if the antenna does not absorb the polarizing effect, it will be weak in absorbing the phenomenon, and will it affect the amplification gain of the circuit?

I don't know the answer, I'm not a physicist, we need to experiment. I propose the coil antenna which has approximately the same sensitivity as the stylus antenna, it has the disadvantage that it cannot be modified like the stylus antenna which can be lengthened.

[FrancoItaly]

Yes, I have made both a single inductor and two inductors. Do you think it is better to use the same coil as the original design because of matching the impedance of the antenna with the circuit?

I'm not very familiar with RF, so I can't answer you, the version with the two coils and the one with the amplifier improve the sensitivity slightly, but I don't know if it's worth it. The 20 MHz version is the one that significantly increases the gain, as R1/C10 is tuned to a 20 MHz harmonic, making the TR2 mixer more efficient, but as I said it is very critical to tune. Out of three lrls I've built only one works well, so I'm unable to help with the construction.

[erfan]

Hello dear Franco
I have been using your circuit for years and have had amazing results.
Now I have a question. As we know your circuit works in the FM frequency range. Do you think if we change this range to AM SW MW or etc.. will we still get reactions similar to the reaction of the device to precious metals?
i very much apreciate if you share your comment in detailed explanation (if possible) ofregarding of how the various radio frequencies work in your circuit.
Thank you.

[FrancoItaly]

Hello dear Franco
I have been using your circuit for years and have had amazing results.
Now I have a question. As we know your circuit works in the FM frequency range. Do you think if we change this range to AM SW MW or etc.. will we still get reactions similar to the reaction of the device to precious metals?
i very much apreciate if you share your comment in detailed explanation (if possible) ofregarding of how the various radio frequencies work in your circuit.
Thank you.

The only way to know is to try with different frequencies, several years ago I tried different values for L1/C10, L1 with 2 or 3 turns, C10 with 30 or 22 or 10 pF or nothing (only the parasitic capacitance of the B/ And of TR2), the result was more or less the same for all combinations, we are in the 80/120 MHz range.
Since several members on the forum ask about the performance in the field, could you list some of them?

[erfan]

Yes, dear Franco.
A bronze dagger 40 cm deep in the ground.
A silver bowl at a depth of 240 cm in the ground. Yes, 240 cm.
Two silver coins at a depth of 70 cm in the ground.
A volume of gold coins in a jar at a depth of 90 cm in the ground.

All findings are from 2017 to 2022.
All in the country of Iran. In the north of Iran.
.
.
And many other findings that are surprising in terms of the depth of burial in the ground. But if I say it, no one will believe it.
This profession is prohibited in Iran. The details of the research cannot be mentioned, but if you want, I will tell you in an email and you can transfer it here.
My English is not good. Forgive me

[Kazem]

Thank you for your patience in the answers, dear man

[Kazem]

Hello, dear teacher Irfan, I hope you are well. Are you still working with Asman border? If possible, give me a way to contact

[erfan]

Hi dear friend.
Yes, I always try to get the effect of the sky, but it is not absolutely necessary.
That is, if the effect of the sky is not detected in a certain place, if a valuable metal is buried there that has a long burial life, it will definitely be detected. You just need to reach the maximum sensitivity in the way of settings in that place.
This is an empirical value

[erfan]

Hi dear friend.
Yes, I always try to get the effect of the sky, but it is not absolutely necessary.
That is, if the effect of the sky is not detected in a certain place, if a valuable metal is buried there that has a long burial life, it will definitely be detected. You just need to reach the maximum sensitivity in the way of settings in that place.
This is an empirical value.

[Kazem]

Thank you dear Irfan

[erfan]

Thank you dear Irfan

thank you.
I replied to your private message

[Kazem]

تشکر میکنم

[Canozkaya]

thank you.
I replied to your private message

Do you have meil adress ?

[sweker]

antenna

hello Mr franco, I hope you doing well
I want to make an antenna for very low-frequency range from 20-100 hz
but i do not know, can you help me