Jeohunter - Visual Ground Scanner

[Funfinder]

1m coil ready for single person usage!

At the pix below you can see now the finished result.

Because the coil cable originally leads directly through the lower part of
the glass-fiber stem, I had to unsolder and resolder it at the connector.

For pushing or pulling the coil (both methods are possible) I'm using the
formerly original upper part of the usual coil-holder.

For the standard coil I built already a more lightweight alu-version
so I have now two different ones - and the best:

Both of them have an extra reset button included at the handle region!


To attach the wheel-device I'm using short ropes and polyester-belts.

On the pictures you see the "narrow" moving version which uses the
original stem-mounting. It will detect more precisely but it needs
longer distances for moving.

But the moving with the broad side variante also is possible:

Therefore a fitting board (wooden etc.) is needed inbetween coil
and wheel-device. To attach the stem only a little piece of
rope is needed which is wound around the middle of the coil and
leads through the stems plastic-screw hole.
The 1m coils cable is long enough to be used that way, too.


For pinpointing an additional small metal-detector would be good,
because an usual pinpointer may be not working good enough.


I guess that this new single usage version with wheels will be
even faster than the usual 2 person holding and walking around method.

Because of the wheels you even can run and if the ground is flat enough
it's very simple to move the coil all the time at a very good distance over the floor.

If two coil-holding persons would run over a field such task is much more complicated.


Well, the time (snow melts away) now is OK, so let's see when I will be able to report
about my first live-test. I'm very curious by myself because so far I never had tested
how good this coil works under real natural conditions. This coils reaches very good depths,
but I also wanna find out how deep it detects medium sized stuff and other things.

[Marius]

Hi, Funfinder!


Thanks for continuously sharing your insights with us! A question about the pictures above - as I read from the manual, the 1m coil should be 15-20 cm above the ground, however, it looks as it is 5-10 cm max. In this regard a question - how seriously should one take the 15-20 cm limit and what are the consequences of changing it?

[Funfinder]

Hi Marius,

the info sharing with the 1m coil has just begun, now I'm finally ready with the ropes and belts for fixing the wheels.
(see picture below) Weather already is OK for outside tests and I hope I'll have time soon for them.

The coil ground distance (limit) depends on mineralization, sensitivity setting and experience concerning false signals.

15-20cm is a good medium value but its possible to drag the 1m coil even directly over the floor
if the conditions and user skills are high enough (for going extra deep).

The higher such coil is above the ground, the less sensitivity but also fewer wrong signals.
If 2 people are walking with this coil, on very flat sites there will stronger up-down movements
occure compared with driving this coil carefully at the same distance over the floor.
especially if there are old roads, trails or streets and very plain areas.


btw. i'm using a flat foam-gum for inbetween wheel-device and coil for better hold and less vibrations.

This coil now is perfectly balanced at the wheels and can be moved easily with one hand.
Soon you may see here my first outside test pix. Can't wait to walk the dog ehm the 1m coil!

[Funfinder]

1st Jeohunter 1m coil treasure-hunt

Hi,

yesterday finally the time, weather and snow-conditions were OK again and after enough hours spending
to built this wheel-device I was glad to test everything outside - and: it was a full success!

Driving this coil works like a charm. You can walk at usual pace or faster, draging with one hand the coil -
you almost even notice it is there because so lightweight the moving goes on flat sites, holding in the
other hand shovel and small backpack with supplies, drinks, pinpointer and bags for the findings etc.

I was able to search through a field of a size 80 x 80 meters within around ca. 1-2 hours by walking fast.
Without markings I walked just by approximate distance but I think I made around 50 rows within this field
so the total distance I walked over with the coil may have been ca. 4 kilometers!

If you walk this way with a metaldetector you start to wish that also small coils would have wheels!

Of course such huge distances start to get a little bit boring but it was my own fault - I switched to iron-off
so I found not many things there, but the Jeohunter plus 1m coil made a real good job with the discrimination.


Another important topic:
As you can see on the pix below the total coil ground distance is only around 7cm (3 inches).
But it works really well this way! The sensitivity was only at 8 because I wanted to look only for real big things
at this field, ignoring little noble metal objects, but - especially if using the reset-button sometimes -
it is absolutly no problem also to hunt at highest sensitivity setting 10 at such short coil ground distance.

Not only I have tested the coil at the flat grass-meadow (without grass at the moment, at some spots there
even still is snow around), but also in the nearby woods (see pic below). Driving the coil around there
also worked well enough.

As pinpointers I used the special Ace 250 with sniper coil Mini-Detector and the Garrett Pro-Pointer.
Such a small additional detector with 10cm coil or larger is a big help to pinpoint if the find is deeper and is
not reachable by the usual pinpointers.

But because of the relative large findings the 1m coil detects you also can pinpoint with the 1m coil by
moving it back and forth enough or even more excactly by cross-movements.
However, I made extremly small finds down to 4mm in size, too, because the 1m coil leaded me to spots
where the other detectors found this additional stuff nearby.


Because of the very short ground-coil distance and the wheels this hunting method is much more efficent
than two-box systems or 1m PI coils where the coil ground distance is around 30cm (1 feet).
You can't imagine how much stuff, also deeper and larger, you will miss if the coil is that far away from the ground!


If the finds are very close to the surface the Jeohunter 1m coil even can detect larger lead-balls or coins -
if the position of those is in near the coils center.

For not so plain terrain of course the wheels are not working, but the 1m coil also has belts for 2 person usage.


For huge and flat areas this coil is fantastic and you can walk or run around comfortable the whole day with it.


It would be possible with this wheel device to move the coil 15km a day which would be a searched field
of around 100 x 100 meters !!! by a searched trail/track of 60cm.

(15.000m x 0,6m (if you drag the coil with the 1m broad site you will get even more) = 9000 squaremeters = 90 x 100 meters)


You can extremly raise your chance in finding the big and deep treasures with such methods because of the
huge amount of ground you're walking over. My wheel device of course is some kind of prototype now but
perhaps the producers of the JeoHunter and the new DeepHunter (which also works with the 1m coil)
may give China a call and within a half year or so everyone interested can get this very practical add-on.

Today I will go for the second 1m coil hunting trip and perhaps I will bury something so I can give you
closer details about this topic, too.

Good luck!

[Funfinder]

1st depth overview:

Yesterday I was lucky 'cause I found a perfect item to illustrate the depth capability of this 1m coil:

located at a just since a few days snow-free meadow.

settings: 80% sensitivity, iron-off

Find: the somehow "noble" metal bottom of a small can or something 4x5cm in size (around 2'' diameter)

depth: 12 cm

total coil to find distance: 20cm (8 inches)

the soil is somekind loamy as you can see on the pictures (medium strong mineralized near the surface).

The detection signal was good, long and strong, the location is close to extremly strong electro-smog sources
but I got not any failure signals from them. Any usual motion-style-detector wouldn't work there on an usable basis at all!

btw. my shovel is detectable in air test up to 60-70cm at sensitivity 8.


Those used settings (sensitivity 8, ground balance 0, iron-off) of course are just around 65% depth-power
of the maximum which is detectable. Swiching to all-metal already at 80% gives a 20% better depth results,
you can tweak the ground-balance to the maximum and it is no problem to hunt at 90% or even 100% to get
another 10 or 20% more depth.

btw. yesterday I tried to hunt with 90% too and it was working great, just sometimes very short random
cavity or metal beeps (those are different in sound) occured but those are good distinctable compared with the much longer good signals.

I found out that you will get good and much longer signals if the 1m coil is moved on the lenght side (even while running fast!),
but for covering 3 times more ground it is much better to move it with the broad side ahead direction.

First I had to make some other modifications to the coil until I can fix the stem at its "outside-middle region".
Guess I find some plastic clip because this has to be done special so the coil still fits into its protection- and carrying-bag.

However you have now some absolute authentic and real test results and you may be able to calculate already
the real depth for larger finds.

If using 90% sens., perfect groundbalance and iron off such an 5cm diameter metal sheet is detectable while moving
the coil 7.5cm (3'') above ground at a depth of 30cm below the surface!
The steel sheet of medium small shovels perhaps at 75-90cm.

Of course the 1m is used for larger an deeper finds, otherwise you can use the Jeohunter standard coil.

But as you can see the 1m coil also will find even larger coins if those are close enough to the surface.

This test now shows the standard or simple hunting capability.
This is failproof and can be done even by total rookies.

It shows that you don't have to hold the coil 25cm above ground and losing alot stuff that way.

The professional version will be draging the coil the broad side, at 90% and with iron off.
This is also no problem at all while using sometimes the reset button and having a little bit more experience.

It just depends only on the walk-speed, anyway. At 80% and iron off you can run real fast with this "roller" and
you will get no failure-signals at all, 90% needs a bit more caution and at 100% the movement should be carefully.

Hunting with a coil that rolls behind you is completly different - you can't imagine it until you have got your own experience.
Its so easy, no hurting arms anymore, you can walk 10 meter in 2 seconds and you have "discrimination" by size, this also
is a very important factor sometimes, you won't be distracted by finding small stuff and lose alot time if you look for the big treasures!

Don't underestimate "discrimination by size", as example first you can pick out the "precious big perls" out of a site with such a method
and afterwards you still can concentrate on the little stuff. But with small coils close small finds also make alot noise.

Good luck.

[Marius]

Hi, Funfinder!


What wheels are you using? Looks very comfortable - they are quite the right size.


Marius

[Funfinder]

Hi Marius,

yes, rolling the coil over the sites works really very fine and easy.

The wheels having 15cm diameter and somekind of special foamgum-tires, almost 3cm broad.

Those wheels are coming from one of those folding rolling bags made out of metal pipes and including a handle
where (sometimes older) persons put their supermarket stuff into for driving it home or to the parking lot etc.
You can find such shopping trolleys already for 5 bucks, but the usual metal-axis hole is just around 5mm
which is not stable enough for the plastic axis, so it has to be extended by soldering iron or something else.


The 15cm diameter wheels are perfect because they also fits "into" the coil while moving it with the broad side ahead
very close over the ground.

Its really seducing to run with such a coil kilometers or miles over sites, through woods, old ways, gravel-roads etc.
listening to music and waiting until the huge signals will occure for shure - below you can see a 15cm deep hole
digged directly into a concrete-tough forest-road after finding something with the 1m coil there - half at night.

The next thing I wanna do is making tests while moving the 1m coil with its broad side.

Good luck!

[maimoune]

Hello
Please ,somebody can help me to find a solution to this problem ?



Thank's

[Funfinder]

hello maimoune

Is the problem solved already?

Usually this screen message indicates that the cable of the search coil was
not attached correctly and good fitting into the electronic-box jack.

The connector of the search-coil-cable contains inside a little hardwired jumper
so the box knows if it has to deal with the small, medium or 1m coil.

please give me more detailed info if it works correctly meanwhile
and what Model you are using (Jeohunter or Deephunter and which coil).

[maimoune]

Thank you for your response funFinder
I have jeohunter 3d dual system.
it's give the same result with small saml and medium coil ,and 1 m coil, I think the problem with the connector electronic box jack!
jeohunter is just a expensive junk, very heavy to work with.
I tried several times unfortunately the same result search head is not determined,I have to open the electronic box .

[maimoune]

Her is my jeohunter 3D dual system

[Funfinder]

Thank you for your response funFinder
I have jeohunter 3d dual system.
it's give the same result with small saml and medium coil ,and 1 m coil, I think the problem with the connector electronic box jack!
jeohunter is just a expensive junk, very heavy to work with.
I tried several times unfortunately the same result search head is not determined,I have to open the electronic box .

Hi maimoune,

this is very cute picture - will be a big treasure-hunter if starting at such young age!

Sorry to hear about that all coils have the same problem but that doesnt mean that every Jeohunter is "expensive junk".
Depending of the country it may be some 100s of bucks too expensive but this also is specialized ultra-depth detector.
look around for a detector with 1m coil and iron-discrimination - you won't find them, only some wannabe-disc pulse induction.

Open the box is not a good idea because that way you may lose warranty.

There is a short cable inside that leads from the coil-connector to the mainboards "antenna circuit area"
but I don't believe this cable is lose or broken and other things you can't repair there anyway.

Depending from where did you got this detector and if it has warranty or not you may contact the dealer first.

You will be happy if you have enough experience with this detector and if you can use it for professional tasks,
otherwise better buy yourself a cheap 300 bucks detector.

Hope the problems with the coil detection will be solved soon.

Please be very careful if you really want to open the electronic box, we had already a person here who destroyed the Jeohunters mainboard.
Somewhere in the middle of this already 26 pages long thread I guess I have posted some pictures of the mainboard incl. connectors.

Good luck and lets hope that you will soon have a good working Jeohunter!

[maimoune]

Hi funinder
He is my boy a young teasure hunter
Jeohunter is a good devise, I have not good experience with'it, i see that you are professional very nice
we stay in touch

[maimoune]

hi funfinder
I am looking for jeohunter shematic, cane you help me ?

[Funfinder]

Hi maimoune

your boy looks gorgeous - mail this super cute and lovely picture to makrodetector, Istanbul, and I'm shure they will like it very much!
as reward perhaps they can send you a replacement mainboard-platine for a very good price or for free so perhaps you can repair the Jeohunter by your own


Sorry my friend, there is no schematic available and because the mainboard contains many ICs, also programmable and
it is constructed like a little computer with VGA output and firmware (afaik on linux basis), its extremly complex.

But if you are skilled in electronics work I can give you good advice how to replace the mainboard of your electronic-box.

Perhaps this would be the best and fastest way for you to get the Jeohunter working so you can have a great
treasurehunting time this summer!

you can mail to:
[email protected]
or see the complete contact info here:
http://www.makrodetector.com/?t=Cont...ontact&setLg=1


I wish you that you will have soon a perfect working Jeohunter and Good luck!