Lrl from Italy

[abdou2014]

I don't want to know at what distance i can localizer the target ,I know its depends the underground duration and size of target . but i want to know at what distance i have to change the value of capacitor or have to make another test fields for search the targets around.

[FrancoItaly]

My answer is still the same, basically all my tests I made in a test field that I now no longer available, and also I am abroad.

[abdou2014]

Thank you Mr Franco .

[taxma1981]

This lrl ist from panagiwths

[dream_man]

Hello dear Franco.
Hope you are fine. May I know, how does it act when I remove C10?...May you explain a bit more. Thank you.

[FrancoItaly]

If you take away C2 remains in parallel to L1 base - emitter capacity of TR2 (about 10pF).

[dream_man]

what do you think about lower amounts of c10? ... Is it better to catch the phenomenon?

[FrancoItaly]

with C10 in 10-33pF range or no C10 I have not noticed any difference.

[dream_man]

Same here Franco. I also applied both the varactor idea and other amounts of c10 even removing that. but I have not found considerable changes. But for more turns of the L1, it will be more sensitive to the waves or other sources of energy.

[FrancoItaly]

With more turns for L1 you lower the resonant frequency, the same thing you did by increasing C10.

[dream_man]

That's it. Thanks dear Franco.

[abdou2014]

Mr Franco , What is the best for L1 2 Turns , 2-22p Or 22-44p ?

[FrancoItaly]

After several tests I use 2 turns for L1 and 22pF for C10.

[abdou2014]

I think there is an error , you lrl does not work between 100-150 Mhz .

[FrancoItaly]

I'm sorry, I was wrong, L1 has 3 turns.

[taxma1981]

this is my lrl ,i use variable capasitor 0-22 pf,i have a strong signal but i dont know what is there

https://www.youtube.com/watch?v=10eh5SoVgMs

[FrancoItaly]

You have a signal only in "pinpoint mode"? In this case I think it is a smaller target, and you can check with a metal detector.

[dream_man]

Hello dear Franco.
Regarding your LRL, I'm sure Abdou is right. According the metrics you mentioned earlier, the L1 length is about 10mm, coil diameter 10mm, and wire diameter 1mm. So with these metrics, the L1 must be around 0.027 micro henry and when we add c10=22pF, the resonance frequency is approximately 200 MegaHertz which is quite far from 100 Megahertz. Something is wrong here.

[WM6]

Originally Posted by FrancoItaly

..... you can check with a metal detector.

All end up with metal detector.

Why not with metal detector from start?

All will be faster, without waste of time on such wanna-be LRL creations.

[taxma1981]

today test the detector in another area, I had small marks at one point, I put detector and banged, very soon we will learn what has thear...

[FrancoItaly]

Hi dream man,

my lrl works well with 3 turns for L1 and 22pF for C10, the resonant frequency is not important, I do not understand what you worry.

Best Regards

[abdou2014]

Mr Dream men, you made false calculates , L1 2 turns length 8 cm wire 1.3 uH. resonance with 22p = 29 MHz.
Mr Franco, you told the resonance is not important , its mean we can locate the targets with these parameter in all countries ?!!!

[taxma1981]

i think the most important of this device is the antenna and the LC circuit

this is my first coin for 1 meter distance and 10 cm depth,am very happy

[abdou2014]

congratulation taxma. is it franco lrl in the video ?, i mean the black box. I saw no exterior antenna, can you show us with a picture please.

[taxma1981]

The antenna is funny but work well, is a cable 10 cm with nose of 24 carat gold, with another antenna not functioned