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#1
03-07-2006, 12:37 AM
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ElectroMagneticFieldAnomalyDetectors and nuts...
 Hi to all, and everybody are welcome here! This is supposed to be a thread about a very interesting effort to detect remote objects in the ground or at the long distance. No "mumble-jumble" involved. I was "hooked" to start this thread by FrancoItaly's and Esteban post's in the other thread: "FrancoItaly: Hi All Look for theese link: http://www.vlf.it/kurt/elf.html http://www.vlf.it/Schumann/schumann.htm http://www.vlf.it/below150/below150.htm http://www.vlf.it/parmigiani-frozen/frlight.htm A Ulf receiver with an E-field antenna it’s very similar to an ion detector, it can receive Schumann frequency, it may be that ground battery troubles Schumann signals?" "Esteban: Here a lot of interesting projects: http://www.vlf.it/" I would add that everybody look at GISCO EMFAD products first, on the .net Look for GISCO EMFAD UG12 for example. It is the fact that there are a "net" of distant VLF radio stations spread all over the world. "Electro Magnetic Field Anomaly Detector or EMFAD measures variations in VLF radio electromagnetic field data caused by anomalies in the subsoil." The system it self is receiving frequency range 44-142 kHz. What can amateur like my self do about it? Since this is a TECH forum, and since i am a TECH "freak", i simply can not stand aside.I am too curious and want to build some device and try mentioned principle. For the first step i'll choose to make a receiver which is about to receive those freqs. That receiver should have a very narrow angle of rx.It just need to include a highly directional "antena". It will be only a first step. ................. It is a start. Waiting for reply... 
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#2
03-07-2006, 12:51 AM
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Hi Ivconic,
I agree, Franco showed us a fascinating study. I can't help much with designing a suitable reciever, but I am interested to see what you find at these frequencies that you are interested. I would hope that maybe you can find a way to demodulate some of these signals and see if they carry man-made information, or maybe only geophysical signals, I will be waiting anxiously to see what you discover when you complete your reciever. Best of luck 
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#4
03-07-2006, 01:33 AM
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If you are highly skilled at building radio equipment then I would sugget that you build a sensitive reciever for the frequency bands that you are interested in, I would think the signal should be shielded and sent to a high-impedance amplifier, similar to the way the ion detector handled the signal. When you have the amplified signal, then you can add any stages you want to demodulate it or process the signal in other ways. It might be good to make provisions that will allow to adjust the bandwidth of the signall recieved as well as the frequency. I really don't have a clue for what kind of signal processing would be interesting to try.
I still think it would be good to attach an oscilloscope to the reciever so see the full spectrum of what you are picking up. If you have access to a small battery powered scope, then it would be good to connect it into the amplifier output and see what changes when you move the reciever to different locations.
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#5
03-07-2006, 09:20 AM
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HI All,
I have already explored VLF range from 500 Hz to 50 Khz with a self made receiver. It was formed by 2 orthogonal ferrite coils, a preamplifier stage, a VCF stage for tuning, a CC amplifier/rectifier stage and a push/retuning circuit similar to metal detectors with a meter/audio stage. I have noticed nothing of interesting as perhaps it was a B-field receiver and I think that only E-field can help us. I intend to use the same VCF and retuning circuit with and high impedance stage in the range 3/30 Hz, with the purpose of avoiding 50 hz power line influence. I think it’s possible to measuring phase difference between 2 adiacent places by using a CD4046 as motion detector, it’s sufficient to use a time constant of many seconds in the low pass filter that drives VCO.
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#6
03-24-2006, 10:04 PM
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Strat....
I was busy last week....but since promised some ideas here is a primer on main part of vlf/ulf receiver.... For the end i sugest a simple 10.7 IF from some radio .....for example u can use some based on CA3089 or even better on MC3357 or similar...3361,3371,3362,3359..... even a simple transistor design would do a job.Further analyze can be obtained,taking a part of signal from later stage....(i am preparing some schematic on that). For antena I would sugest a loopstick or even better special design i am preparing and gonna post it soon. You may experiment by winding 600-100 wind. of Cul 0.5mmm on ferrite core, 30-45cm long and 3-6cm thick. This is just an idea,I am very busy these days and off .net so here is a little something just for a start. regards....
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#7
03-26-2006, 02:54 PM
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VLF detection
Hi All,
In the past I have experimented also the LF detection at 77.5 Khz frequency, it's the frequency of radiocontrolled clock in Europe, but in my test with a home made receiver ( I have utilized a quartz from an old radiocontrolled clock) I had no results with fresh gold samples, perhaps because the signal is very weak and there is no halo...
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#8
04-02-2006, 08:01 AM
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ElectroMagneticFieldAnomalyDetectors and nuts
I found some frequencytables what can be found resonating in low frequencies:
http://curezone.com/forums/m.asp?f=292&i=1812 http://www.chimorg.unifi.it/~chimichi/NMRPerTab.html http://www.altered-states.net/barry/...frequecies.htm Tool for locating sources of frequencies from body and a list Hulda Clark's frequencies: http://www.drloyd.com/syncrometer.pdf
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#9
04-05-2006, 09:05 PM
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Ugh ...Ug 12
I opened UG 12 yesterday and found very simple device in the box, except the PIC 16F873
part...considering that .hex inside is probably protected during programming.Since I am sort of familliar with pic's lately,i also know it is impossible to re-read it once is protected. It was possible to gain some success with the early 16C84 ic's, but that bug was fixed on 16F84 series. On 16F873 series is impossible to do that. The whole design is splited on 3 parts.Simple receiver, some kind of converter/buffer and Pic part with eeprom and rs232 (or simillar)communication part.The pic pcb is very "pro.look-like" and it seems that they used already prepared "general use"pcb and just programmed pic.The other two pcb's look very "hand made" and simple and can be easy copied.As i presumed, you need a ulf receiver and a good software to analyze received data.Also there is a data logger included in the design with 16 000 samples capacity. When u switch it on the pc, software transfer data from logger in to pc and later u can analyze it on many ways."Nice and clean". Despite the price of 8000 e, still i would like to copy it and make another.Is there any chance that somebody have .hex for UG12 pic !!??? I do have software for pc also, which comes with device.It looks very simple and easy which provokes me very much! O.K. ...now ...is there any chance to get that .hex for pic or not? If somebody know how...come here and join the company! This is it. I am gonna continue with my own ulf project and when ready i do intend to post all here....for everybody to see. I am very interested about your opinions people....come and talk.. regards
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#10
04-11-2006, 10:06 PM
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Huh! Low interests here i guess....
I have been tested UG 12/4 last few days.The aparatus seems to be
very usefull! I read manual many times and understood almost everything ,but one thing only.How to determine depth of the object.In the manual that part was very "poor" covered! My friend Strujas scaned a gold coin (10gr) from the surface of the ground. Gained result was more than good.Picture in 2D and 3D is very clear and right.All measures of the presented position of the coin were exact right!!! The only thing we can not distinguish on the sight is depth of a coin.If i use recommended method of how to determine depth,i get nonsence results like 1.07 meters or simillar !!!! As claims:" The approximate depth of an anomaly/object is determined by means of calculating the so-called half value of a signal(geophysical expression)....... And the "drag&click" method is explained further. When i used that method the result was nonsence, like i said. After all i noticed much more reliable method how to distinguish relative depth.Simply an "eye" method.On the displayed 3D image,i can see exact position and measures of a choosen profile respective to the ground surface.Using presented measures i can find very relative depth with 10-20% error, which in some cases is not a problem.But in scanned image of some large area, error could be enormous!!!! Therefore i am asking if someone already has such experience and can explain me more, how to determine exact depth of a small object,scanned with UG12/4. Right now i am not in position to post some pictures here,but if somebody interested i may do that in next few days.(i am using an ancient P-I now without any possibilities to grab images from EMFAD Scan software, my dear P-IV is at home and i am not!) I would like to spread and grow this thread now, since, at last i discovered a very usefull device for long(deep) range locating after so many years of wasting time with trivial projects!!!! waiting for some tips......
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#12
09-28-2006, 06:40 AM
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Hi Ivconic,
what happened to your ULF .did you build it? and I want to ask you something is this emfad a magnometer? it's software results look like okm's ,GEM's and accuratelocators'S imagers. and for software ,you can download accurate locator's software from tehir page free.
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#13
09-28-2006, 06:45 AM
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and here info for dept determination.maybe it would be useful for you.
http://www.accuratelocators.com/pinpointer_card.html
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#14
09-28-2006, 08:01 PM
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Slow....
I am working on it,but it will take much time to be finished,cose there are a lot of problems to solve. I am not satisfied with comercial models,to much questions unanswered yet... We will see.... Thanks for the link. When gain some progress i will post here everything... regards
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#17
10-01-2006, 10:36 AM
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Hi İvconic,
ok emfad is not a magnometer. just ulf or vlf I can not understand that our vlf detectors like garret and whites, they have transmitters which is really close to target than base stations of radios or else.and they can not penetrate deep.but this emfad does.HOW can it do this. frequency used in detectors is lower than emfad recievers. and how can differ cavity and metal? in pics I tried to show dept determination of ulf .this is my idea but logical. there are lots of stations on earth.each have different frequencies this is why we ne broad band reciever . each color in pic represents different station and frequency. according to drawings angle CAO = angle CBO ,say X degree to this angle our selonoid winding(antenna) also has recieveing angle which is equal to 2X degree so we measure the lenght between A and B ,= L then divide 2 = L/2, sin(X) / cos(X)= TAN (X) =dept of target / (L/2)
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#18
10-01-2006, 10:58 AM
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Hi
while you look at this pic,think that the path you are walking on is sank to the level of target and think A,B,O at that level.it will be easy to understand my thoughts thanks for yur interest and can not we increase dept by using transmitters I know it will not be posibble to use transmitters everywhere,but just an offer.
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#19
10-01-2006, 11:28 AM
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"
For the first step i'll choose to make a receiver which is about to receive those freqs. That receiver should have a very narrow angle of rx.It just need to include a highly directional "antena". It will be only a first step. ................. It is a start. Waiting for reply... " I can not understand you want to narrow angle. if we want to increase dept,it is related to power of base stations.and can not help in this manner. but willl effect dept measurement badly. because our user wil be a man and wont have constant walking speed.if he walks for long we can say approximately something.but in short distances it will be problem and this could occur when you decrese angle. because chip will count time between start and end of signal .than uses this to have approximate L . than calculate dept. so we can not decrease angle much. since decreaseing angle does not have adventage on dept penetration.In my opinion no need to do this thanks I talked much ,I hope you will not angry me
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#20
10-01-2006, 11:32 AM
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decreaseing angle has adventage over pinpointing
but if we use a speaker and meter we can pin point .determination of dept is the difficulties one for this project. but the only way of having good dept measurement is keeping away from decreaseing angle much.
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#21
10-01-2006, 07:51 PM
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....
You concluded very good points there....I agree. But with UG 12 i noticed very good theory and bad praxis...??? I am very busy these days, I'll find some spare time and try to think the way you think and than post some of that here...Very pleased that you showed interest for this subject.Sorry cose now i can not talk to much here.Thanks for your posts...See ya in next weeks... regards
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#22
10-05-2006, 08:59 PM
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End of this thread.....
 Michael: "Here in Middle east situation is high stuffy and we scare of our lives. treasure hunting is really forbidden and intelligent service pursues treasure hunters." Neronc: "The situation is the same in Belgium. It is a small country and I would not certainly say in this forum if I had found a treasure. I am certain that since the following day, I would have some problems. All is known here." ************************************************** ************************* The situation is the same in Serbia too. There are a lot of locations here protected by state institutions. Police is doing a great deal of job on protecting those from ilegall "archaeologists" and so called "tomb raiders"..... It is very hard,almost imposiblle to smuggle such a big pile of coins just like that.. I do not beleive in such "sweet" story at all... ************************************************** *************************** Leto: "$2.000,00 or $12.000,00 ?? And the question is how were the 100 gold coins smuggled from Jordan to USA + intelligent service behind..??Hey but yes..detectorists are damage-makers for archaeologists." ************************************************** ****************************** Good point! So many jars in sand and so many smugglers there, i supposed!? ************************************************** ****************************** Leto: "I do not understand Hungs bad attitude towards Carl... finaly Carl helps Hung advertising mineoro with existance of this forum and this thread... who knowns how many naive people bought mineoros and other C.#.#.P. devices with help of such golden found forum threads. Hey Carl maybe mineoro should fund your server bills..." ************************************************** ******************************* No wonder at all...It is almost fact that Carl helps Hung advertising mineoro with leting him to open every day new thread with same subject!? C'MON CARL ! LET'S COUNT THREADS HERE WITH VERY SAME SUBJECT! ALSO LET'S COUNT THREADS HERE STARTED BY HUNG! LET'S COMPARE THOSE THREADS SUBJECTS! ALSO, LET'S FIND EVEN ONE "HUNG'S" THREAD IN WHICH MAN CAN READ AT LEAST ONE TECH TIP,HINT,MOD OR SIMILLAR !? N O N E ! MINEORO SHOULD FUND CARL'S BILLS MUCH. ***************************************** Kev.: "Liars are cheap, some pathological types will even do it solely for the satisfaction and intrigue." **************************************** I agree! One of them,here have patological need to be present everywhere,to be seen, and to be known....so he is everywhere...posting same old nonsences again and again.. I am sure that you know his nick. Mostoften on this forum.... ************************************************** *************** Carl: "According to Mineoro, this forum is hurting their business. Damasio is quite upset." Like hell! I bet he is very satisfied with this forum. Mostly thanks to your patienty and habit to alow everyday anoyance from same man,day by day. You are ready to delete only "dirty" language, no matter of honesty...and at the same time you are ready to alow dirty mind posts with "sweet&polite" language.... ************************************************** ******************************** Hung: "No. The bad attitude was not from me. Carl posted that 'silly' clues postings trying to induce people to believe Mineoro paid Mitchell to 'advertise' their detector. Esteban and I presented the true story which 'debunked' any speculation on the contrary." ************************ Hung or whatever your nick is, YOU are provoking bad attitude here! I guess that was your idea from the begining... You should backup your tales from time to time with some fact and proof... *********************************************** Jim: "Ah yes, young hung…just how are you privy to such information. Either you are involved in the scam, or a victim. Time to come clean..." ********************* Good morning Jim! ************************* Carl, the guilt is all yours! Think twice! Only you can do something here...nobody else! First time i visited this Geotech Forum i was delited. So many technicals....almost like a dream to me. With characters like Hung, this place becamed hell, thanks to your "do nothing" game... What you doing here is not democracy for everybody to have same rights....no.... lately it turnet to a joke.... a big joke...! And mineoro is taking all the credit from it... Sorry for criticism...but i am very straight, i am telling you only what i am thinking for real.... ************************************************** ********************************** I was thinking to post here many of my designs on MD subject. Also i developed a quite new devices with a few quite new techniques involved, for free, to share with other people... To exchange....to make new friends... I also was thinking to post a several schematics of complete designs of brand new machines on market today, which nobody have yet.... But sorry, this is not gonna happen here! Thanks to unfair treatment on RObert, SOny and some other of my friends,while at the same time some "yo-yoes" enjoy kind of immunity to do whatever they want to do without penalties... P.S. A short story.... Once i asked Jackdetect, why he is not present so often here on these forums......And guess what was his answer....??? I am not gonna tell you here...i'll just say: Good bye!
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#23
10-06-2006, 06:53 AM
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Hi Ivconic ,Esteban and Michael,
I was thinking about zahori and emfad you know emfad recieves signals reflected by metals .it has directional antenna that just recieves from underground.while passing over target. it is a wide range reciever and gets different frequencies at the same time . adjustment of EMFAD from http://ammann-direkt.de/assets/s2dma...ac1067105.html " Use the tuning knob ‘B’ to detect a local maximum and adjust as accurate as possible. Adjust gain ‘C’ so that the pointer of the display instrument (meter) is in the centre position. The highest reading will be the local maximum. In case the pointer moves all the way to the limit, you will have to readjust gain ‘C’ again to a centre position and continue with the adjustment for the local maximum. Then hold the equipment vertically and once again use the gain ‘C’ to adjust the pointer to a centre position. • In case no local maximum can be detected turn the unit by 90° on the horizontal level and search the area again. " but zahori looks like a little bit different. it 's frequency is between 10 hrz and 1000hrz but not wide band . you start from 10 hertz and trace down till you find a frequency ( or 1000 hrz to 10 hertz) (any frequency.,one frequency of a transmitter (base station near)that is behind of user.) then you reduce frequency to find (recieve ) any reflection of previous frequency. WHY MINEORE İNSİST ON NORTH TO SOUTH SEARCH? fOR ME İT İS THEİR FAULT OF THİNKİNG AT THE NORTH OF BRAZİL (WHERE MİNEORO SETTLES) THERE ARE LOTS OF USA NAVY BASE s. MAYBE ONE OF THEM ,MAYBE ALl OF THEM PROPAGATEs this low frequency look at this chart Extremely low frequencyELF13–30 Hz 100,000 km – 10,000 kmCommunication with submarinesSuper low frequencySLF230–300 Hz 10,000 km – 1000 kmCommunication with submarinesUltra low frequencyULF3300–3000 Hz 1000 km – 100 kmCommunication within minesVery low frequencyVLF43–30 kHz 100 km – 10 kmSubmarine communication, avalanche beacons, wireless heart rate monitorsLow frequencyLF530–300 kHz 10 km – 1 kmNavigation, time signals, AM longwave broadcasting and ivconic at gisco home page there is a new unit called WADI to find water at 100meters ..work at 10-30khz . IF YOU SAY ZAHORİ 'S FREQUENCY İS TOO LOW YOU WİLL TELL TO US WHAT TO DO FOR ANY FREQUENCY RANGE THAT WE COULD DECİDE. MAYBE 44-142KHZ OR ANY FROM LİST ABOVE. now you know my idea please tell me why this can not be done while emfad can do this.
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#24
04-25-2007, 12:37 PM
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EMF detector
About this, can the circuit on this link helps on your proyect?
http://www.electronics-lab.com/proje...006/index.html I hope this can help Regards Nelson Quote:
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#25
04-25-2007, 07:36 PM
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.....
 Sorry man....i lost myself in quite different designs last couple months... ULF project i started last year is here in my workshop....waiting.... I'll need to finish some things this summer and than when find some spare time to continue with this... This is not simple, it will need much more time,passion and attention to finish it.... I'll be back here than....when have something to say and offer on this subject... Until that....regards!
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Linear Mode
