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.