Metal detector Detech EDS Reacher

[esimplex]

Hi are Mauro of Rome - Italy.
I would add the manual ground balance on my metal detector Detech EDS Reacher, who is able to help me?

Sorry for my English, I studied 50 years ago:-)

[WM6]

The simplest way is to replace your EDS Reacher with EDS Plus II.
To get more depth it is not only question of GB but Threshold too.

Another way: check by which of blue trimpot you can tune out GB by slight changing its value
(first precisely remark current trim-pots positions to not complete detune your Reacher).
This trim-pot can be later replaced by manual GB potentiometer. Be careful in what you done.

[esimplex]

Excuse me, but how do I know which trimpot is the right one? Is there a way to avoid mistakes?

[WM6]

Excuse me, but how do I know which trimpot is the right one?

In this case, better to left this project to someone other mission.

Is there a way to avoid mistakes?

Yes it is - to replace your EDS Reacher with EDS Plus II (you wont regret).

[esimplex]

Thank You

[exzakt]

hello
here its a video with eds modification.it work nice.i have manual GB and auto.i will come back with more details soon.
https://www.youtube.com/watch?v=i3H3Dquw_88

[WM6]

Good work exzakt, congratulation.

Probably those "auto" selection is not factual auto, but usual fixed GB.

What about threshold?

[exzakt]

-these auto ground is preset (fixed).in my case (hunting ground)it work nice but i think i won few centimetres using manual ground.i try to upload some pix but i dont know how.

[esimplex]

Could you tell me the changes you made on your Winner?

[WM6]

-these auto ground is preset (fixed).in my case (hunting ground)it work nice but i think i won few centimetres using manual ground.i try to upload some pix but i dont know how.

Agree it is always worth to add Manual GB to VLF/IB design.

To add photo or drawing you can in open Reply window select Go Advanced button and then in expanded window select Manage Attachment to upload your photo in post.

[exzakt]

few pictures with with this mod.


- 2 battery 17650
-hope it was usefull.

[esimplex]

Great job, can explain what is the modify?
thanks

PS -sorry for my English, I think it is terrible

[exzakt]

-best way for you is to go to an electronist.here is a schematics for eds plus from an russian forum.he will know what to do if e see the detector and schematic.
-i dont recomand to nobody to make mods if he dont kow electronics.

WM6

Good work exzakt, congratulation.

Probably those "auto" selection is not factual auto, but usual fixed GB.

What about threshold?

-thanks WM6,abaut threshold its ok,but i need to make a fine setting from internal gain.in rest everything works ok.i can make easy GB on hot rocks because it has some problems with hot rocks with original fixed ground.
-in previous post with those accu. lipo is 17500 not 17650.better authonomy.
-overal it a good machine with good deep and stability.
-sorry for my english,hope you understant.

[esimplex]

Thanks exzakt , I'll try to make the modify


Mauro

[gae66]

prejudice may elencarmi inductor put the power level of the transistor to close on my winner is scorched and everything and I would like to replace it thanks a lot