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I think that these would do good for a project too! I guess that these were sleepers but they are also non-motion ground balancing detectors. Not sure what kind of depth they would get? Last time that I checked it out, it seems that the Rangar could outdo it in neutral ground! But the Rangar is not a ground balancing detector! Not sure if the Wilson-Neuman detectors are also off-resonance but I heard stories about finds in the past that do not make sense! Such as one finding gold rings in the pulltab reject mode which goes against everything that I have ever read on the subject! Joe
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Joe, one of the holy grails in metal detecting is getting rings in the pulltab range and still having some certainty when a pulltab is encountered. The Sea Hunter claimed with its special disc to be able to cull some alum while still getting gold but I think it limited depth and with pulse not having the ability to disc kills its use on dry land, maybe one of these days pulse can take an important place in being able to accomplish this or maybe an AH-Pro with some modifications. Some of these older lesser known designs do have interest if their strengths can be used for specialty uses, hope we have some that will tinker and tweek and come up with a great design. I do think it is possible to create something that will give use the ability to know the difference between rings and pulltabs but I am sure it won't be easy. I am guessing the alum pulltab signal will decay faster than gold?Comment
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Joe,
I have never seen or heard anything about the GB1 or GB2. Do you have one or know anyone who has a schematic of one? That is needed to figure out what they are doing.
RegComment
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I found a U.S. Patent # 4,345,208 and is for a Daytona Search Coil and was dated 1982. I am searching for a schematic of the detector GB-1 or GB-2 but so far no luck . I am sure one out there. I attached 2 photos of a very old wilson detector. EugeneComment
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GROUND BALANCE DISCRIMINATOR......GBD
Sorry my goof, the detector's name is actually GBD I and GBD II. GBD stands for GROUND BALANCE DISCRIMINATOR. I do not know how to post pictures but this detector was in major ads in most of the treasure magazines in the early 1980's. This was one of the very first VLF detectors to discriminate in a non-motion mode. Besides being very sensitive in depth, I believe that it has a very slow auto-tune built into its circuit! The previous post showed a Relic and Coin IV which was very popular in the late 1980's. The R&C IV used a very slow motion circuit. Of course, the GBD was produced by Wilson -Neuman before they split up. Later Wilson produced the Relic and Coin Series, The NorthStar, and now the Coin Select. Neuman built the shortly-lived Orion series. All these detectors are great, but I always like the non-motion discriminators THE BEST!!..................JoeComment
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The VLF 710 is concentric
The VLF 710 is concentric. Is this model a rarity?
Don't know if other previous models are off-R type. I have one of this for repair cable. Also I dissamble for to clean inside and for others (maybe trace schematic?). This is a very good discriminative det.Comment
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WILSON VLF 710
Esteban, the vlf 710 is a scarse detector! I owned one of the 1st ones back in 1986 or so! I used mine at the local salt water beach and could neutralize the salf effect in the discriminate mode! With mine I could get P.I. depth but also had discrimination so I could knock out the bobby pins, nails and bottle caps! I dug a lot of coins and rings and must have been crazy when I decided to trade it off in about 1990 or so! I have been looking for another one for the last 2 or 3 years but anything by Wilson or Wilson-Neuman rarely shows up on Ebay and then you must have deep pockets to afford one! If you ever decide to sell yours contact me.........................JoeComment
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Hi, Joe
Let you know if I decide to sell...
With this detector we found the small treasure in wall (58 silver coins). In these circumstances we need max disc. for no to break and old wall for nothing!
Some pics:Comment
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look at this
http://www.noktadedektor.com/cihaz.asp?cihaz=3
it looks lke vlf detector but insist on 8 m dept even with single coil.
coil is something like 45cm coil.
it detects cavities,differ two object with ratios and give depts.
it has video s if you want.
if you look other pages of company you will see test stand .where theyy test it before selling.
can not bandido or golden sabre do this penetration with bigger coils.Comment
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