A detector for red soil?

[gurdal]

It's not clear enough. It also has a 4046vco board.

Hi master;
4046 vco board picture or drawing, do you have a link?
thanks

[ZOUjiarui]

Hi, I uploaded the PDF file and I don't think it has a bug that makes the machine not work.https://drive.google.com/folderview?...ZUV1vTQZVIKhje
Unfortunately, I can't find its circuit diagram. If I have time, I will modify one according to the original machine drawing.

[ZOUjiarui]

If I may digress, I'd like to share my hand-restored super-scanned drawings.

[ZOUjiarui]

https://drive.google.com/folderview?...mxCqpIzrjts6Y1

[gurdal]

https://drive.google.com/folderview?...mxCqpIzrjts6Y1

thank you so much

[ZOUjiarui]

[ZOUjiarui]

Can anyone post another PI with GB?

[waltr]

Can anyone post another PI with GB?

https://www.geotech1.com/forums/show...ake-on-the-HH2

[Melbeta]

Red soil, is presumbed to be strong heavy ferrous oxides, which when the inland Oceans retreated from the land, resulted in Oxygen oxidation of the ferrous oxides, thus kind of "rusting" the ferrous oxides, turning them red in color. Most of it happend back in the eras around the Pennsylvania time period. That was what the instructors said back then in Geology classes at the university...
Melbeta

[sbalio1]

Hi carl
Does Lorenz z1 contain excellent Ground Balance?

[Carl-NC]

Hi carl
Does Lorenz z1 contain excellent Ground Balance?

I have no idea.

[Rafael]

Greetings to all.

I built a "Felezjoo" and it has worked very well for me, the Ground Balance is Manual and Automatic. Pressing the button (DOWN) activates the Automatic Balance at any time. I tried it on moderately mineralized soil. A Heinek** beer can is accurately detected at 70 cm underground with a 30 cm monoloop coil. I also tried a 1x1m box and it detects it in the same way and for a 60x35cmts sheet at more than 2 meters.

To detect in Red Earth I think it is better to use a "DD" coil that can be adapted, with some changes to the board, without problem.

[GeoMax]

Hi,

based on the hand drawn schematic from post #21, the circuit diagram is a PI-Polones circuit diagram... The "GB" label on the schematic diagram is not correct. It is only an ordinary threshold poti. The detector PCB shown in post #14 does not has a ground balance circuit. DISC1 seems to be an ordinary poti for pulse delay. This circuit part is from the original Sandbanks PI detector and someone added two control poties for DELAY and SAMPLE WIDTH to it. DISC2 changes the sample width only. The text "Setting Frequency Min 350MHZ to 1,2KHZ" is also nonsense. It should be "350Hz to 1,2kHz". It seems that the “PCB designer” does not know what he/she was copying when added the legends to the PCB board.

[GeoMax]

Hi ZOUjiarui,

the Delta Pulse or Sniffer XR71 has an automatic GB functionallity. But whether it works on read soil I dont know.

[barbaposa]

Well the only machine I've seen you work colors like that is the GPX series for that and they work it in Australia in the red colors..as for the felezjo I don't think it has ground balancing..the so called button you push I get the impression it's ZERO .. It is not possible within the second to do ground balancing.. Of course some vlf will work for you but with tragic depth.