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I recently visited the hays electronics site that Carl pointed out, that sell coil skins. They have a Mark1 or Mark2 for under a hundred dollars that is suppose to reach depths of 30" to 40". Are these as good as they claim? I am interested in any and all replies concerning this product. THANK YOU
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Did you take a look at the schematic while you were there?n/t
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Re: Did you take a look at the schematic while you were there?n/t
yes but I am new to electronics and noticed it was a different type then what I have been studying. I don't have a clue what that schematic means, that's why I am asking. You all know a heck of alot more about this than I do.Comment
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Re: Mark1 or Mark2
Yes, but depths of 30" to 40" for what? This depth could possibly be obtained from a metal trash can lid but certainly not a coin. Don't take numbers like this at face value without finding out what they really mean.
The state of the art right now is about 16" to 18" (in air) on a nickle, but some would argue and say they have gotten them deeper in the ground or say they have never detected one that deep.
Actual target depth depends on the ground conditions, user skill in using the detector machine and listening for very very weak signals and being able to audibly discriminate those weak signals from noise. Deep detecting also depends on the detector type (VLF or PI), ground type, length of time the target has been in the ground, and luck; meaning targets must actually be there when and where you are looking with the right machine.
There is a good PI tutorial on this web location about a project called the Hammerhead, Pulse Induction (PI) Metal Detector. This article describes how a PI metal detector works, circuit by circuit and provides construction details for making the PI machine from a circuit board available from the man who runs this forum, Carl.
bbsailorComment
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Re: Mark1 or Mark2
Hi Phil,
The Hays Mark 1 and Mark 2 detectors are based upon technology well over 30 years old. They are a good basic TR type detector and are quite sensitive considering the age of the design. Utilities use them because they are so simple to use to find large items.
So, to answer your question, they are not the super detector, but rather an old design that is ground sensitive and detects all metal. Because they to operate at a little higher frequency, they are not as ground sensitive as some of the VLF/TR's.
They would work best for looking for a property marker, or if you should lose your keys in tall grass and can't see them.
RegComment
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Re: Mark1 or Mark2
Hey THANKS YOU GUYS I sure appreciate all replys, and yes my wife got the PI board from Carl. She and I are trying to master a corner of this electronic stuff,(like how to build the PI). What, if everything works like it should, could I expect for depth with the PI. Now we are talking a nickle in plain black dirt or sand.I have read "past forum" questions and answers and you all are way further into this than I could ever hope to be.But, WE LOVE THIS SITE, ONE OF THE BEST I HAVE FOUND FOR TECH STUFF THANKS -Phil&ColleenComment
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Re: is it?
No, that's the Teknetics Mark I, entirely different than the Hays Mark I. The Tek Mark I is still considered one of the best detectors ever made.
- CarlComment
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