what's this ?

[AK48]

hello, could someone tell me what this detector is and give me the diagram and the data
thank you

[Op04]

Looks like Polones with VCO

[ZOUjiarui]

It's missing a small PCB.

[bernte_one]

pi polones with disc, can you find better pictures from layout or pcb file?

[ZOUjiarui]

https://youtu.be/Kqm4vVf8FEs

video about it

[ZOUjiarui]

Its video claims to have the voice of a treasure hunter. it has ground balance

[Carl-NC]

it has ground balance

I don't think so.

[Hamid]

Yes, he said, it has ground balance and balanced the soil.

[Carl-NC]

The video showed incredible amounts of ground noise.

[bernte_one]

for modification with ground balance you should look for moroccan version of pi polones

https://simplemetaldetector.com/pulse-induction-metal-detectors/pi-polonese_africa_v4/

[Toros]

for modification with ground balance you should look for moroccan version of pi polones

https://simplemetaldetector.com/puls...ese_africa_v4/

This page is infected with a virus! It also quickly switches to a support message. Better publish the materials here.

[ArchibaldSTM]

When the page opens, press ESC several times

[Toros]

When the page opens, press ESC several times

It does not help. But I still managed to trick this page by saving the link on the desktop and then opening it from there.

Here is the archive I managed to download after that!

Can anyone explain why two single operational amplifiers are replaced by a 4x operational amplifier. I don't understand.

In my opinion, the board is made rough. The ZONE function is not used. Instead, the tracks are thickened by stacking several next to each other or on top of each other.

I allowed myself to make a small edit to the board without changing the links on it. You can also make changes if you don't like something.

[Hamid]

They modified many old PI PCB and they try to improve it.
May they can do.
I only translated what he said.
I wish you the best of luck!