Real Metal Detectors

[amtech2005]

Real Metal Detectors

Michael , I spent a full day searching for any clue on this MDL-8500 detector again.This time I searched under medical and Food processing. I will keep searching . A good question to ask is, did the detector show signs of a shoulder strap ?? Or did it show signs of bottom mounting screws , so was it fixed or mobile ????? And a very important thing to do , if it is possible , can you get to or see the bottom of the circuit board ?? Sometimes there are manufacturer names, numbers or markings. If all the above fails then you must take a "Clear Digital Photo" of the top-side of the printed circuit board !!!! It is very hard for me to believe that a detector so expensive and powerfull would not have proper identification and markings of the manufacturer. Most manufacturers put labels all over the unit as a way of 1. advertising and 2. a sort of copy-right...... If you do not want to really want to take it fully apart then please take a "Clear Full Photo" of the whole circuit board with all the I.C.'s and everything !!!...You have many people here wondering is this just "Assembled in U.S.A" or "made in U.S.A." with foreign Parts or a foreign circuit board ???.......Take care................Eugene

[putrechigi]

discriminate

hello michael nice too meet you but he discriminates iron or find all metals? because if that discriminates depth is really fantastic.when you have bought on the sheet of instructions written there was nothing? characteristics, make, model, name, industry, etc. ... or is really strange

best reguards manolo

[michael]

Michael , I spent a full day searching for any clue on this MDL-8500 detector again.This time I searched under medical and Food processing. I will keep searching . A good question to ask is, did the detector show signs of a shoulder strap ?? Or did it show signs of bottom mounting screws , so was it fixed or mobile ????? And a very important thing to do , if it is possible , can you get to or see the bottom of the circuit board ?? Sometimes there are manufacturer names, numbers or markings. If all the above fails then you must take a "Clear Digital Photo" of the top-side of the printed circuit board !!!! It is very hard for me to believe that a detector so expensive and powerfull would not have proper identification and markings of the manufacturer. Most manufacturers put labels all over the unit as a way of 1. advertising and 2. a sort of copy-right...... If you do not want to really want to take it fully apart then please take a "Clear Full Photo" of the whole circuit board with all the I.C.'s and everything !!!...You have many people here wondering is this just "Assembled in U.S.A" or "made in U.S.A." with foreign Parts or a foreign circuit board ???.......Take care................Eugene

Hi, your efforts are appreciable, but don’t make yourselftired in internet I’ve searched there for months, no result.
About case all it had is a soft plastic cover exact fit to the box frame as you see in first attached pictures. no strap and no screw, even one screw;
either outside or inside. Not fix type, mobile is better term but not entirely. all looks like a kind of. How describe it; a kind of slide or rail form easily be assembled after taking apart. The main circuit is fixed on a kind of chassis and upper –lower lids mountable on it.
I've mentioned before in reply to other request at previous page, believe me I did my best to see any name or other useful thing, all what seen have put there. maybe inside white chamber be a name, but is entirely inaccessible. I'm much more willing than you to find maker. When you notice see year 2002, maybe making has been stopped?!!!!
but I suspect first owner, it's possible they access to maker to get a better more advanced unit, then bought the old version to me their alibi was discrimination and were bored of digging for junk metal at depth.

Hi Manolo, I have mentioned before, it has no discrimination and we got it without any manual book.

[Fred]

Hi Michael,
please don´t forget to try to hold one or 2 keys while the thing is starting up (booting).
I think untill we see inside the box nothing done...it there a small hole in it where you could insert a small camera,endoscope style? remove a screw?
What comes from this box, wires? or is it directly over the PCB?
sorry i understand you are tired of questions but abny clue could help.
I tried to identify before some stuff brought by the sea and i remember sometimes very small details helped a lot.
Regards,
Fred.

[Qiaozhi]

I suspect that this is a one-off device. i.e. it is the only one in existence.
It would really help if we could peek inside the white box.

[michael]

Hi Michael,
please don´t forget to try to hold one or 2 keys while the thing is starting up (booting).
I think untill we see inside the box nothing done...it there a small hole in it where you could insert a small camera,endoscope style? remove a screw?
What comes from this box, wires? or is it directly over the PCB?
sorry i understand you are tired of questions but abny clue could help.
I tried to identify before some stuff brought by the sea and i remember sometimes very small details helped a lot.
Regards,
Fred.

Hi, about holding 2 button, I will do at first got opportunity , and think it will take long time as the main box is with me and cable is in another place, and for turning it on the search coil should be connected to it.
but about the hole in white chamber? (if I understood right), no, there is no hole, no screw, nothing else, no, at all.
what are you pointing to? it has been manipulated hard and impenetrable.
no wire comes from white box, as you in picture I put also at previous page only some pins comes and connect to rear part I red-cycled it. this pins are exact in opposite side of one edge of white chamber and has its’ twin
at front of PCB that is connected to LCD with some kind of rope-wires and a plenty of components like diodes.
If device was replaceable. i.e. being manufactured, surely I would take risk and try to open it. I'm sorry, can't dare do this.
If we succeed and catch treasure, will try to offer them a price which arouse them to order for us. then I will surely open it.
now the conceivable way is to look for maker with all things you access; family members, friends, or even friends of your friends.
it is worth, believe me. If man decides to do some thing can do even be tearing down mountains.

[Fred]

Hi, about holding 2 button, I will do at first got opportunity

Hi Michael,
All OK,
about buttons, it is not necessarily 2 buttons, but just hold 1 button when you power on the detector.
About the white box, yes i was asking if there is a small hole where you could put a small camera to look inside.No hole, no camera....
Interesting connections for the white box, not so many wires.PC controlled PI !
Regards,
Fred.

[Unregistered]

Dear Michael

if you want to lose ur device do that job , it's dangerous work maybe your system shut down forever and your treasures fly over.if you have such treasure why you want to destroy it

[panzerfaust]

what about coil?

Hi Michael,

Could you take some photos of search coil and give us few measures: size of the coil (1mX1m?), diameter...
Thanks a lot.

Best regards, David

[michael]

Hi David.
Taking picture of coil indicates nothing although is not accessible now.
but significant info are these:
the search coil which we have is 8m we use 2m x 2m frame.
when we got it has some ruptures in interface cable then replaced it.
I prepared all the cable formula, then made a copy of that.
what I saw was 4 wires inside aluminum foil with a shield. the interface cable is stereotype 2 core and a shield.
at main coil(8m) 4 wires connected each other and ends to shield + interface shield. another head of 4 wires connects to interface core . other head of main cable shield is free.
with a 0.8 offset in multimeter (ohm-meter) the whole resistance is 5.5 ohm.
of course I should mention in the menu of device there is different options of coils;
45 inch round coil, 75 Cm x 75 Cm and universal coil( the main cable= 8m) and we only have the universal one(8m).

oh BTW; in menu one option is for frequency it can get from 540 Hz to 586 Hz (if I remember well). it gets 1 Hz by 1 Hz, and at every 5 number you feel somehow a difference in behaviour, we mostly work on default opition; 586 Hz

[Morgan]

SSP

What about these devices? Are their claims true?

http://www.accuratelocators.com/ssp3000.html

Anyone have heard about it or use it?

Michael as we think MDL 8500 has no information and we can't find it what do you think which is in the second position?

I try SSP Pulse,in Germany,its nervous device when used in mineralized ground and not powerful,even with 1mx1m coil.The discrimination not work as in the most PI devices. Anyway its not expensive device...

[Morgan]

MDL8500

Hi, you're right, but as another side we've seen some entire US-military stuffs with only "Made in U.S.A" and a code number on it, nothing more, even without any name, but an excellent object made of excellent materials with best work on of them was a binocular night vision with indefinable quality that advanced Russian ones was hobby in comparison with.

About MDL : We know definitely the origin is America and had been sent from there. why the owner sold it?
A: cos he used to search with 1m x 1m frame whereas with 2m x 2m is the best attitude and the most stable.
as MDL has no discrimination and the owner and his partners were tired of digging for many of junk metals at great depths so set him thinking to buy a "Lorenz deepmax" only for discrimination and sell his MDL.

All the things we know is what you see here in Pics. it seems the main microchip is sealed in white part is entirely packed and inaccessible. in the arrow has written "high voltage". Datas on all ICs has been erased or abraded.
only on this white part you see "Made in U.S.A"
It's obvious isn't a homemade device it's an awesome neat work of a team work.
again I emphasize; It really worthies, it's a treasure by its own. use all of your communication potentialities, friends or anything else
to find the maker and please do a great favor, inform me. it will be so much appreciated.
oh, one thing now sparkled in my mind: as you see there is a label "Intel Inside celeron".
maybe Intel will tell the firm or guy who orders espesific microchip to Intel? or no, it never divulges?

Hi Michael

This time i think i found the cousin brother of your MDL8500. Have a look in the site of Grifon detectors,the PI is very similar to your MDL,and it seams to me very easy turn on and go...And again not expensive PI,8 meters deep,bla,bla,bla...

[Morgan]

MDL

Hi, about holding 2 button, I will do at first got opportunity , and think it will take long time as the main box is with me and cable is in another place, and for turning it on the search coil should be connected to it.
but about the hole in white chamber? (if I understood right), no, there is no hole, no screw, nothing else, no, at all.
what are you pointing to? it has been manipulated hard and impenetrable.
no wire comes from white box, as you in picture I put also at previous page only some pins comes and connect to rear part I red-cycled it. this pins are exact in opposite side of one edge of white chamber and has its’ twin
at front of PCB that is connected to LCD with some kind of rope-wires and a plenty of components like diodes.
If device was replaceable. i.e. being manufactured, surely I would take risk and try to open it. I'm sorry, can't dare do this.
If we succeed and catch treasure, will try to offer them a price which arouse them to order for us. then I will surely open it.
now the conceivable way is to look for maker with all things you access; family members, friends, or even friends of your friends.
it is worth, believe me. If man decides to do some thing can do even be tearing down mountains.

MDL8500 Microelectronics Development Lab (MDL) Intel Celeron ,made in U.S.A.

[Fred]

MDL8500 Microelectronics Development Lab (MDL) Intel Celeron ,made in U.S.A.

Interesting Morgan!
http://www.sandia.gov/LabNews/LN12-1...ark_story.html

"Specifically, MDL was charged not just with the design, but with the fabrication of 57 "interpolating time-interval counters" and 57 "signal timing analyzers and generators."
...
"Design of the rad-hard Pentium (r). "
Could it be that one?
Fred.

[Max]

MDL8500 Microelectronics Development Lab (MDL) Intel Celeron ,made in U.S.A.

Hi,
I think it's pure speculation... not cause M.D.L. cannot manifacture an MD if needed ... but cause they work mainly for NASA/aerospace applications, often custom semiconductor masterpieces not MDs.

Now the MDL8500 isn't anything military or aerospace... and probably has not a pentium celeron inside... (e.g. where's the cooling system... fan etc ? also pentium processors require extended contour chipsets ...all require space, energy and to dissipate heat) but if an Intel inside really... will probably an ARM-derivation like Xscale processors. This is if there isn't a simple PIC inside or the like... things that's really probable instead, and the sticker is just a joke. It's just a powerful PI , probably not hi voltage but HI current, MD.

So, please don't mix things... MDL in MDL8500 could mean "model" or anything else... but sure not Microelectronics Development Lab.

Kind regards,
Max