Real clone Alonso-PD

[Faraz]

Mr. Qiaozhi's schematic is correct and has no problems. You should get a long range when you add the ferrite section

Thanks hosin
are you made this a project sayd?

[Hosin@2021/shahroee]

Yes, I made it several times

[Faraz]

Yes, I made it several times

Ok At what distance does this Mr. Chiawozhi design you built detect the spark from a 1.5-volt battery? How stable is it? Does it work well in mountainous areas, far from the city?

[Hosin@2021/shahroee]

First, you have to make the part of the metal detector that can detect a coin from a distance of eighteen centimeters. Then you make the part of the radio that should catch the spark of the battery from a distance of two to two and a half meters. Then you have to reset the metal detector and the radio so that it can catch a coin from forty centimeters. In this case, the spark catches the battery from a distance of one and a half meters. It is very difficult to get these sizes. Also, the system is very unstable. It is difficult to work with any metal detector in the mountains, so you should not go to the mountains with PD.

[Faraz]

First, you have to make the part of the metal detector that can detect a coin from a distance of eighteen centimeters. Then you make the part of the radio that should catch the spark of the battery from a distance of two to two and a half meters. Then you have to reset the metal detector and the radio so that it can catch a coin from forty centimeters. In this case, the spark catches the battery from a distance of one and a half meters. It is very difficult to get these sizes. Also, the system is very unstable. It is difficult to work with any metal detector in the mountains, so you should not go to the mountains with PD.

Thank you very much. Do you have the PCB design for printing, or should I assemble it on a perfboard? If possible, please provide some details regarding the assembly as well. Some members have mentioned that the Heathkit circuit is the best—and also suitable for the Andreas—so I was wondering if you are familiar with how they perform?
regatds

[Faraz]

First, you have to make the part of the metal detector that can detect a coin from a distance of eighteen centimeters. Then you make the part of the radio that should catch the spark of the battery from a distance of two to two and a half meters. Then you have to reset the metal detector and the radio so that it can catch a coin from forty centimeters. In this case, the spark catches the battery from a distance of one and a half meters. It is very difficult to get these sizes. Also, the system is very unstable. It is difficult to work with any metal detector in the mountains, so you should not go to the mountains with PD.

That’s great! Thank you very much. In that case, some users have mentioned that the "Andreas" design offers better stability; I’m not sure if you’ve tried it yourself? So, the PD design isn't recommended for mountainous terrain? How does the "Franco Italy" design perform in the mountains? There is also a "PDK3" design; have you ever seen or built it? Since it utilizes FM waves, I imagine it might be suitable for use in mountainous areas.

[Faraz]

First, you have to make the part of the metal detector that can detect a coin from a distance of eighteen centimeters. Then you make the part of the radio that should catch the spark of the battery from a distance of two to two and a half meters. Then you have to reset the metal detector and the radio so that it can catch a coin from forty centimeters. In this case, the spark catches the battery from a distance of one and a half meters. It is very difficult to get these sizes. Also, the system is very unstable. It is difficult to work with any metal detector in the mountains, so you should not go to the mountains with PD.

could you give me the PCB design?

[Faraz]

Hello. Can the BC550C transistor be used instead of the BC548C? Will there be any issues? And what if I use a BC556C instead of a BC558C?
For PD Mr.chiaozhi

[Hosin@2021/shahroee]

You have to design the PCB yourself. You should try using other transistors in the circuit yourself. Andreas' plan is the same as Qiaozhi's plan and there is no difference.

[Faraz]

You have to design the PCB yourself. You should try using other transistors in the circuit yourself. Andreas' plan is the same as Qiaozhi's plan and there is no difference.

Oh, thank you very much; that’s excellent since everything is ready. I will try to build it, my dear friend; I thank you with the utmost respect.

[Gerson]

Last year i have a mail by seden if is possible drawing a PD only for gold.
This is a point very interest for me and ofcourse i try find solution for this.
For experiments i use my real clone alonsoPD with full modifications (for example change MD section with other circuit stability), build a new sensor via lathe and laser cutter.
After two months study and build many-many prototypes sensors, i think find solution. The big problem again is calibration all together. In this case i use other way for find delicate for all work together.
Joke !!! i know very well what i need for calibration and all steps for fine tune, but in practice after three days without results, i find solution (very difficult)

Please look video https://www.youtube.com/watch?v=1alv...ature=youtu.be
This is not dream, but real. No ground or sky effects. No detections earth lines
The unit is very-very stability and silence for other metals.
Interest is PD work without motion or very-very slow motion
enjoy

O link do v

[Pahom]

O link do v

Yes!