Jeohunter - Visual Ground Scanner

[Funfinder]

That's a tech forum so finally we should focus on the technical details!

If somebody wanna search real deep, he has 3 choices:

PI with large coils: Doesn't find smaller things.
PI with medium coils: Problems with discrimination and wrong signals on heavy mineralized soil
FLV with large coils (Jeohunter, Jeosonar or Nokta): Expensive and not that easy to handle

- A large coil needs more stability and heavier mounting.

- A medium PI coil is good for deep coins and objects to 10cm in soil, sand or with unproblematical mineralisation

- the bulgarian PIs:

DeepTech Megapulse III (28cm coil) (950 Euro)

http://www.deeptech-bg.com/megapulseIII/MegapulseIII.pdf

- Small objects like bottle caps, pull tabs, pieces of aluminum are rejected
- The device can be operated effectively in highly mineralized soil areas, beaches, fresh and salt waters.
- High quality components are used and all critical parts of the circuit are
designed to align themselves to signal drift due to changing temperatures
- The hot rocks are categorically ignored

!!! Small objects don't show up if you work with the 1m coil and it has no discrimination; Besides it has no cavity and grafical display.

DeepTech SDP 2014A (28cm & 1m coils) (1350Euro)

http://www.deeptech-bg.com/sdp/SDP.pdf

!!! Uses a magnetometer to distinct between ferrous and nonferrous metal - well, better than nothing... But same above with small objects if you search deep with the 1m coil - and you just can work with one coil at the same time. No cavity, no display, no metal specification.

DeepTech GroundPionier 4500 (28cm & 1m coils) (1550 Euro)

http://www.deeptech-bg.com/gp4500/GP4500.pdf

http://www.deeptech-bg.com/gp4500/gp4500_german.pdf

(see for depth test results!)

!!! Well, it has a LCD Display, but same magnetometer stuff and same problem with "too large coil". You can walk around with this 1m thingy and miss alot precious stuff.

Lets take a look to the in air tests:

Ring, diam. 21mm, thick 2mm:
11'' DD Coil: 35cm

1m Coil: nothing

The Jeohunter finds such a ring at ca. 25-30 cm, depending if iron on or off.

The smallest with 1m coil it finds is a 0.33l cola can:
11'' (28cm) coil: 78cm

1m (40'') coil: 145cm

Jeohunter finds such a can at around 85cm but it also finds even 8mm small objects at 8cm - and all inbetween that range.


I really love Bulgaria, I listen to balkanika.tv and Fan.tv via 16° East Sat all the time, and I really respect the electronical engineers there.

You can get really price-worthy detectors in or from Bulgaria like the Deeptech Vista RG 750 (350 Euro) or the Blisstool LTC48X (450 Euro).

There also some good MDs from Hungaria like Cobra or from Poland for cheap money. All these machines are much better than those from China but of course you have to made down-cuts related to service, quality, warranty compared with well known or expensive brands. Makrodedektör as example also works for NASA, police and military (it builts also demining detectors, and those have to be reliable).

btw. 1500 Euro (almost 2000 Dollars) for a bulgarian PI Machine is not really "cheap" or "priceworth". It's very expensive because alot if not the most people there earn only 150-300 Euros /Dollars per month.

PI only goes that deep because it saves alot power with it's short pulses so it can radiate high currents with the coils. I have a better idea: Why not double the radiation power of VLFs and integrate a interruption circuit? A IC-Timer that switches the coil on and off every 1/20 second. This leaves enough time for building up the needed EM-field, gives enough time for recognition if the coil swings not too fast.

But first we need a better coil!

This coil has to have eliptical dimensions 38x28cm and must include 2 pairs of coils. One for larger objects and one for smaller ones. And this coil has ultrabright switchable LED lamps to light the soil at night.

If I should be more motivated I will help to invent this and with creating the schematic. 2 days ago I modified a bicycle-dynamo and attached a selfmade AC/DC current changer plus LED-Lamp but those bike-dynos have really a very bad power-output.

However:

Writing all of this was alot work compared with those cheap: "all this is scum and scam and sh*t stuff"-comments but it should give you a real good and fair overview about those bulgarian detectors. Buy one, if you like and support the lovely bulgarian people - but think twice if you will really use such "deep-detector" or if it's just a new toy which is lying in the corner after 1 or two weeks or months. I'm using the Jeohunter because I want to have the chance finding small and deep targets at the same time. And alot of the time you go out searching you have just one chance because this day you go that special way with your detector and the next day you will go a different way, if you should go this way a second time at all!

Think about it if you really wanna search serious, effective and successful.

[kt315]

scrap of scum is your Nokta. you think you got $$$ money and now can input it in advertising your scrap on Geotech. yeah? although admin did not welcome these people as you and get NOTHING from the advertising billions dollars. we are knowing good Bulgarian PI mashines so these Bulgar people are silent, they do not use the forum for advertising aims of their very good detectors.

[SVEN1]

Get them while you can, on ebay now

http://cgi.ebay.com/JEOSONAR-3D-2D-Ground-Radar-Metal-Detector_W0QQitemZ190387531960QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2c53fb30b8

http://cgi.ebay.com/NEW-NEW-NEW-LORENZ-DEEPMAX-X6-with-DATALOGGER_W0QQitemZ200459349598QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2eac4eee5e

http://cgi.ebay.com/NOKTA-3D-Deep-Penetrating-Ground-Radar-etal-Detector_W0QQitemZ200459328641QQcmdZViewItemQQptZL H_DefaultDomain_0?hash=item2eac4e9c81

[Funfinder]

WM6, you are a poisoned person and I should ignore you, but yet I'm not done with you. Beware what will happen, I warned you...

All you can do is attacking "information" from where you don't know s**t about! You don't have any better way communicating with people, don't you have?

If your style of "false justice" is throwing stupid arguments around just for protecting yourself, in the next time I will answer to each of your "fantastic" postings with meaningless stuff so you will recognise, feel and hopefully get hurt how great such f***in' behaviour is!

Where is the constructive part of your critic? You don't own a Jeohunter so you know nothing. You believed those cheap and short tests of kt315 because for you he's an authority, but also he can fail!

Are you completly nuts comparing the Jeohunter-LCDs with a Nintendo? You have no idea about Nintendo, perhaps you know nothing at all! The Nintendo Black-White LCD handhelds were the first popular Display-Screens and even your Middle-Class-Detector uses it nowadays! Do you need an extra portion of attention or what's your deal? I have no problem with this: Come here and get what you want or better: deserve...

Listen to Tanja Zagar, Sabina Mali, Sexplosion, Attomik Harmonik etc. and have fun is healthier for your psyche, I told you!

But what does a big oak tree cares if a pig rubs his skin at it...

---------------------------------


Next important Jeohunter Tests!


As you can see I found another very interresting rare object with the Jeohunter.

But this now lead to the next special info how to use this machine properly:

The very Pro point is that you can find small to large deep targets with one detector, but you have to know the right handling first, and this takes a few days if you start from scratch like me:

Sensitivity:
The Jeohunter finds the exactly 9.2cm/3.2'' cannonball in air at 100% sensitivity at 80cm/32'' - iron on (all metal).

But in practise, depending how mineralic and trashy ground is, the usual search level is 80% and iron off.
But now the cannonball is just at 60cm/23'' findable.
The 80% are correct, but with iron discrimination it has 75% and all detectors search deeper with all-metal on.

Next: I found that knife-edge/top with iron off - 3cm x4,5cm

Shure, a great fund and usually iron get's discriminated very well, but in that case it was recognised neverthless.
So it distincts somehow between cheap rusty tin-metal and old forged iron! btw. iron is not iron - there are alot different alloys and in medieval years the ore wasn't that "clean" as nowadays.

Another important topic is the search-range. The Jeohunter detects the deep objects almost completly throughout the whole search-head and not just middle-centred. Closer objects it can detect 10-40cm / 4-14'' beyond the coils. This is very important because the swing-motions are limited. The range you can scan with the Jeohunter in 1 half turn a usual detector needs 3 swings.

Pinpointing:
Because of the large coil pinpointing is more complex, but also possible. If it's a near object, just hold the piece of soil against the coil and divide it until you have the object. If it's deeper it's automatically larger and you can search over the earth you dug out or use a small pinpointer for this - nowadays standard anyway.

Another very practical thing I found out is the relative bright LCD-Display:
If it's (getting) dark, you can use it as digging-lamp.
the shine goes ca. 1-2 meters if it's completly dark. Of course it depends how full the accu is and how long you searched before already. While digging switchin off the Jeohunters power can save alot energy if the holes become deeper, and they will! You can find 2cm / 1inch aluminum wine-bottle caps 20cm / 8inch deep but using the Jeohunter is searching for deep objects. If you wanna dig near stuff using a normal detector ist best choice, but the Jeohunter finds also very deep treasures.

But as I told already for very deep searching special conditions have to be observed:

!!! Use minimum 90% sensitivity and iron on.
!!! Analyze the signalized targets very well: The noise it makes first, the depth and metal-analysis.

If it's a very short strong audiosignal mostly it's a small and near metal object. The more expierenced you get, the better you can differentiate objects and their depth.
The more deeper and smaller it goes, the more analysis efford has to be considered. This also includes the terrain where you are searching. Jeohunter beach searching is a waste of time, you need really precious sites or already with usual detectors well searched places.

[WM6]

If you wear shoes with steel-caps or even the shovel in the other hand will cause signals! The same if the coil-cable just moves for 0,3cm it will causes a signal.

.

Great, at the end you find that this "sausage can shooting jumping around" that "request to re-adjust the ground-balance more often by pressing "reset"" is only a very expensive piece of crap. You can find more by your Nintendo.

[Funfinder]

http://www.multiupload.com/DGX9QW8OT2

I found this six pound 9,2cm / 3,x'' diam. french cannonball from the year 1809 at 31. March 2010 because the Jeohunter gave me the attention to this fund!

Usually I search at Disc-Level: "Gold, small Rings, pulltabs". But because the Jeohunter ignores the most small stuff you can concentrate on large deep targets much better - as you can see at the original pix with success.

The depth analysis was very accurate - it was around 50cm and the Screen showed 54cm. Metal recognition also was correct.

But you have to think and work a little bit in other "dimensions" if you work with such a machine.

This is no "coinshooting jumping around" but more a scientific ground analysis. You have to re-adjust the ground-balance more often by pressing "reset" and test the signal a few times.

And I found out an important discovery:

The coils radiation-values affects yourself!

If the coil penetrates 1m vertically down it also signalizes things in the horizontally level of 50cm. If it hears 3m deep into the ground it also hears 1,5m around a circle, and in this circle are you, the searcher.

If you wear shoes with steel-caps or even the shovel in the other hand will cause signals! The same if the coil-cable just moves for 0,3cm it will causes a signal.

Such deep hunting units really find much deeper things, but you have to work alot more professional with them as with "switch on and go"-Detectors. The weight is no problem at all, because the coil & holder is just 1kg more than usual detectors have. You can move faster forward because the coil is much larger, I like this.

In fact the best operation range is an area where you think there could be large deep targets. And the best:
If you only want to have precious funds, just dig out the stuff that is recognised as "GOLD"!

Already I also tried it on a self-buried target in mineralized soil, 43cm / 17inch down, 2 alu sausage-cans with around 5cm / 2inch diameter. While the Fisher 1266-X was on the border to signalize it (with the improved mod it's OK), the Jeohunter found it with ease at just 60% sensitivity.

Shure, if you test the Jeohunter with coins or small objects, other detectors will get better results and the handling is easier, but if you want or have the chance to find deep and precious things, you really should give the Jeohunter a try.

[Funfinder]

@ John
> Hi my name is john i'm new in this, i have Jeohunter and don't know why i have to put the width and length manually and is true the maximum depth is 6-8 m.

Hi John!

Where are you from? Great you have also bought a Jeohunter, if you have enough power and ambition for treasure-hunting this is THE "allround-machine" from little to deep objects including cavity- and mineralized stones-detection for a much fairer price (just 3200 Euro) than the afaik "ripped from makro-group": Nocta Golden King.
Congratulation!

Your questions:
1.
Entering width and lenght has to do with signal-processing and intensity. A near small object can reproduce the same strenght as a deep large object but has different "sizes". The DoubleD-Coils have a relative "sharp edged limit" encountering signal-changing effects by metal or mineralized (also cavity) objects. This has to do with radiation changes/reflection.

There exists different depth-detection possibilities, depending on the used technic.

2.
For maximum depth first you need a full Akku-Pack and 100% sensitivity setting. Second the ground balance has to be correct adjusted (press Reset button in usual search mode if drifting occurs).

Finally the question is: What kinda "object" can cause such a strong change in the electro-magnetical field?!
A buried car or tank? A suddenly appearing large cave?

More realistic is a cache or metal-chest, coins scattered over a larger area over the ground or even gold-bars a deepsearch detector should detect or a hidden cellar or secret-way in a ruin or castle. If the cellar has a size of 3x3meters the Jeohunter will detect it for shure to 4-5 meters if the surrounding ground-conditions are ok. A hidden runway under ground 1m broad perhaps 2-3 Meters down or inbetween very thick solid walls.

The manual described other depths so far are correct - it will find a 20cm ironplate at 110cm easily in air and at 100% sensitivity also in ground. For the moment weather and still sometimes frozen ground is an issue, but in the near future I will make alot sophisticated tests and release them.

plus:
Here's the new german user manual - written all by myself!
http://www.multiupload.com/224DTFCBJ4
It explains all functions of the Jeohunter very well and you can translate it now with google language tools:

http://translate.google.com/?hl=&text=&sl=de&tl=en

[kt315]

Turkish is not free hunting country. there all are forbidden. you can not free go on a beach and hunting with detector. Turkish is undemocratic blackhearted country.

[John Vasquez]

Hi my name is john i'm new in this, i have Jeohunter and don't know why i have to put the width and length manually and is true the maximum depth is 6-8 m.

[Funfinder]

@ WM6
Get lucky (or lost...) with your pseudo-deep "M6 god"! At least I have no company logo in my signature like you.

In this forum promotion is inpossible anyway because each "techie-freak" or homebrew-fan prefers his very own special technic or is completly into it.

What I'm doing is just caring for a fair counterbalance against Jeohunter offenders plus providing correct pro/contra tests which will go on if the weather conditions will allow this in about a month.

Perhaps some here are also p*ssed on because the computer-electronix of the Jeo-Systems is that complex, expensive and powerful, so they can rebuilt it no longer on their own...

[WM6]

You still not stop to promote this JeoCrappy things here and polute tech forum?

[Funfinder]

inter-what???
Do you mean that the device had interruptions???

And please tell us more of your test experiments.

qudamaa.com, here some info about those you call: "scam-sellers":
www.xpedia-detector.com
Sawa, Beirut Lebanon
URL Services: Chicago, Illinois, USA

http://www.xpedia-detector.com/sup/imagsysdetectors.html

Jeohunter & XPEDIA DT-2010

[qudamaa.com]

Does not lend itself to such products, which proved its failure in the Middle East
Interlude is not good

[Funfinder]

Wow, got already my first "Hammer fund" on Saturday, it is an old pick-iron hundred(s) years ago was used in mines and also is used in the armorial (Wappen) of mining. (see pix - iron is 20x35cm)

Next Pro's:

- Jeohunter really finds a 20 diameter metal plate from 110cm (in air) like the technical data describe!

- You can also use the MDs-bag as a back-pack! That was a fantastic idea of them.

- Because of the 45cm wide coil you can proceed much faster forward, and almost the same area of the coil has the same detection depth!

Next Contra's:
- Seem's the Jeohunter has with 35x45cm coil the same depth as Nokta has with "little" 25x35cm coil.

- Accu Plug 1mm too large for accu-holder-cover (could destroy plug if plastic-gum is not cut off a little bit)


But I found out that the tests have to be much more complex, because i found a book about humanitarian demining from European Union you will FIND here (d. the second one if you don't own it. ):

http://www.multiupload.com/IUZK9UZO73

Chapter 3, 4 and 5 are very important for good test-results and those guys from demining know what they're talking about, because there it's goes about life or death!

I'm already very interrested how the "Jeo" fights through drifting, ground-mineralisation and other important stuff.

[Funfinder]

Ehem, kt315

I know already how bizarre and "evil" you're reaction against Nokta was so your new outbreak is no wonder. But please stop speaking "for us all", 'cause everyone here has his own opinion, if he/she's interrested in this kind of MD at all!


What was your personal idea:
Take a White's 808, use other coil(s) and disc. and this then is much cheaper and better than Nokta & Co.?


You may have good ideas - so tell more. Which way do you like to display the results? What kind of housing and power supply? Can you combine all this parts together without any problems? Or was it just an unrealizable nice idea?

You know how to display the spectrum-analyzer results of MD coils correctly on a display or do you hate grafical displays at all?


And keep in mind:
Neither yours not my opinion is really representative for Jeohunter or Nokta.

So far in this forum did write 5 people who like them and 5 who don't (some of them never had one) - and not 100 or more Owners of these MDs, and those exist! It's like 5 love Counter Strike and 5 don't - it's absolutly "nothing"! And why?

Because the most ppl interrested in this forum like to building their own metal-detectors and/or wanna know how the technix works, but don't care much about commercial MDs and/or how good/bad they might be.

But neverthless there are some interrested readers for shure and they'll have the right to get a fair review or pro/contra discussion and no polemic or hatred prejudice.