Lrl from Italy

[FrancoItaly]

yes

In my opinion it is impossible with any lrl to find a coin at 100m and perhaps recently buried.

[liudengyuand]

It has been buried for nearly ten years. When the L-stick was popular all over the world in those years, I buried it for experimentation, but the L-stick failed and I didn’t feel its effect.

[FrancoItaly]

It has been buried for nearly ten years. When the L-stick was popular all over the world in those years, I buried it for experimentation, but the L-stick failed and I didn?t feel its effect.

When I had the test field silver objects were buried at about 20 cm and were marked starting from about 4 m if I remember correctly. I think the depth depends on the type of soil, the mass of the metal and how long the metal is buried.

[liudengyuand]

If the depth is only 20cm, it is almost any real effect,

[FrancoItaly]

If the depth is only 20cm, it is almost any real effect,

I did not say that 20 cm is the maximum depth, I have not tried to bury deeper.

[humhum]

For deep of this Rec system , I think that is up to 5 meter (for big metal) or more ...

[Babak51]

Brilliant diamond lrl Franco

https://youtu.be/6hKuX4O2MwM

Mr. Franco ... among all the equipment I have, your LRL looks like a shining diamond. Thank you.

[liudengyuand]

The higher the frequency, the farther the detection distance

[Babak51]

Depth

Yes, the type of soil and the height of the area must also be considered

[Babak51]

The higher the frequency, the farther the detection distance

Yes, higher frequency and voltage identify better targets and harmonics

[brain]

This design and circuit of Mr. Franco, which has been slightly strengthened by our good friends, and of course it is much better to increase the distance of the sensor from the discipline. However, it is very powerful and sensitive.

is it possible for you to send pcb ?

[brain]

is it possible to send pcb drawing

[liudengyuand]

I suggest adding a passive filter after the antenna inductance

[Pahom]

I suggest adding a passive filter after the antenna inductance

Good day ! What cutoff frequency should the filter have?

[liudengyuand]

100M