Need VDI Number Info From Teknetics Users

[tabman]

Most of the gold rings that I find are in the 60 - 65 VDI range. I've tested some very small thin gold rings that I confiscated around the house. Most gave around a 53ish VDI number. The lowest one was a 51. A sport's drink foil cap like the one pictured below has a VDI reading of 47/48. A nickel has a VDI ready of 57/58. The numbers change slightly with coil selection and from detector to detector. It's not that critical.

OK, now please tell me about your gold ring finds that had a VDI number of 50 and below. I haven't detected any gold rings with VDI numbers that low. Just how small are they and are they out there in abundance?

Thanks
tabman

 

[G.A.P.metal]

Omega, sub 5" DD Coil
Large penny 89-90------Indin head penny 74-75------silver dime 85-----med sized 14K mans ring 63- 64.
Gary

 

[tabman]

Omega, sub 5" DD Coil
Large penny 89-90------Indin head penny 74-75------silver dime 85-----med sized 14K mans ring 63- 64.
Gary

Thanks. I wish I could find me a large penny. Do you have any small gold rings that have a VDI lower than 50 or a foil cap?

tabman

 

[G.A.P.metal]

Tabman
no i don`t have any gold rings that hit lower than 56-57...but have a friend my hunting partner he has lots of rings...i`ll try them and see.
As for foil caps 55-57.
Silver Dime 85
Clad Dime 84
Sub 5" DDcoil
Gary

 

[Mega]

Most of the time over here in the UK we tend to use Tone I.D more than VDI,that is why +2 is the most popular option and we dig everything over 40 well if its a stable signal that is,i only tend to use the VDI as a backup to confirm if i dig it or not but if the VDI bounces between a high and low figure that is a good indication that its iron so we dont dig it.

 

[G.A.P.metal]

Mega B
Yes i use tones all of the time...it`s 6 Degrees here ground is frozen and snow is 12" can`t go out and hunt so this is what we do to stay sane till we can go out...but actuley some of these #s you will see in the field in the ground.
Gary

 

[G.A.P.metal]

57 on a rose gold 10K ring med.
51 on a 10K stick pin 1 " from the coil will just barely pick it up the G2 could not see this pin.
58 on a very very small 10K gold lady`s ring.
84 on a silver Roy Rodgers Ring
88 on a med.womans silver ring
Sub 5" DDcoil on the Omega

 

[tabman]

Thanks G.P.A.metal. I keep hearing about all these gold rings that fall in the iron/foil range. I would like for someone to post pictures of gold rings that discriminate out below a sports drink foil cap (47/49). I know they'd have to be very thin and baby sized. I'm trying to find out if it's worth my time digging bunches of small foil, tiny pieces of can slaw and sports drink foil caps to find such a small gold ring when I could do less digging and find something larger. I like playing the odds, but I don't know what the odds are.

This is what has got me to thinking: http://www.findmall.com/read.php?21,1720979,page=1

tabman

 

[G.A.P.metal]

Tabman
From what i can see i would notch in iron and notch out up to 50-55 in a trashy park and still hit most all gold rings i have tested so far and dig less trash.
Gary

 

[Furious T]

Tabman, all the gold rings I have found with my Omega have registered about 60....I suspect that the reason I haven't dug gold rings in the low 50s - high 40s range is that they are right in the foil (and Aussie 5c) area. Now having said that , the Omega with a detecting frequency of 7.8 kHz naturally hits a bit harder on smaller silver than it does on smaller gold...so.....I am more likely to notice a hit from small silver...and dig it. It is in my nature (and injured back) to try to avoid digging foil and pulltabs; that being the case, although I dont ignore the lower range stuff, I have a natural tendency to protect my back and not dig too many iffy signals. I know that I'm probably passing over small gold, but I also know I am passing over foil and pulltabs. If I could dig everything, I would...but self preservation takes over and I guess that is why my Omega/med gold ring combination is what it is. I have found small gold rings, but most of them were found back when my back wasn't so bad..I suspect there are a lot of people out there a bit like me. HH

 

[Critterhunter]

Tabman, sorry I ain't scanned in a sports foil cap yet to refresh my memory on those versus the 100+ random non-biased gold rings we used. But I will get to it here sooner or later. I want to scan a small foil top off a particular brand of drink so you can buy that one for comparison/VDI-rescaling to match your machine. But by the sound of what I'm reading here, looks like most small thin gold rings are reading 50 VDI or higher? If that's the case, then killing any "trash" signals above 50 might be the right method, because you'd then be killing off those foil tops. Those foil tops on my machine have a much more "fuzzy" sound to them than say something else with the same VDI #, so I just avoid them by ear and use no discrimination other than iron being blocked out. Only time I use my notch is when I want to silence a ton of tabs at a site, and as a result I often dig a ton of nickels that way, because although nickels have a distinct lower tone and more of a round "boing" sound to them on my GT, by silencing tabs when the site has a billion of them my concentration goes up and I'm more apt to notice any tones near the same pitch as the 20 digit tab range on my machine.

Here's another method to your quest- Go to a jewlery store and ask to see the thinnest, plainest, highest K value gold ring. No crown. Thin. Plain. And a high K value (18k?) would then be the lowest VDI your are likely to see in a gold ring. Ask if you can bring in your detector to scan it for say $5 worth of their time maybe. Don't scan it on the ground. Instead. Low sensitivity so no chatter/EMI issues and stable. Lay machine on counter. Wave ring in front of coil and don't mob it. Keep it a good 4 or 5 inches away so as not to overload the VDI or such. There you go. Should give you a solid # to work with as your base for smallest/thinnest gold rings. And, out of curiousity, as to then see the same type of ring but in white gold. White gold often has nickel in it which will drag down the VDI # a bit more still yet. Where as yellow gold can read higher due to coppper or other higher conductive metals mixed with it. Know what I mean? If you get results with info or more posts, please shoot me a PM, as this forum and the other one you posted in I don't often lurk in and so might miss it. I'm interested in your progress and results. Very interesting stuff. Thanks.

 

[Mike Hillis]

Tabman,
You got me to thinking. So I went back to some of my notes for the F5 and pulled some small gold stuff out. Very interesting. I don't have any rings below the juice tab, but I do have earrings and pendants below the juice tab. You can translate to Omega talk.

Item..........................................TID
earring, large, .5g, 14k................20
pendant, .5g, 10K.......................20
earring, small, .5g, 14K...............19-20
foil juice tab................................22-23
ring, diamond, .8g, 10k................24
ring, .9g, 10K..............................25
ring, elephant, 1.3g, 10k...............25
Ring, 2.5g, 10K ...........................27-28
ring, engage, 1.4g, 10k.................27
ring, wide,2.2 g, 10k.....................28
nickel.........................................30-31

I only have one ring that reads the same as a nickel and that one is a man's 18k White gold wedding band. All my other larger rings hit above the nickel range and up into the tab range.

HH
Mike

 

[G.A.P.metal]

Yes to translate F5 to Omega
Omega Nickle 57-58
F5 Nickle - 30-31
27
Add 27 to other targets above and they come close.

Target from above
Ring 2.5g 10K 27-28
+27=54
In range close enough but low ?? size of coil might have something to do with it .

 

[tabman]

Thanks everyone. I think that I'm beginning to see that the best range to search for gold rings is between a sports drink foil cap and a beaver tail pull tab. I can eliminate digging sports drink foil caps and beaver tail pull tabs and still be in the hot zone to find gold rings.

tabman

 

[Ben78]

I found a 9 gram 9ct chain on the beach with my Whites TDI and tested it with Teknetics T2 to see what it ID's at. 49 rock solid, same as a foil cap. The small links bring the ID down too compared with rings. Changed the way I think about 'trash' ID's a bit. There is a park near here that is heavily populated on weekends, I need to spend some hours digging everything in the 40-54 range to see what I come up with. 54-66 has always produced tabs and canslaw for me (oh except our 5c, 10c and 20c come up in those ranges but I only did the double signals in those numbers and nearly always come up with surface coins)

 

[tabman]

Here's where all those foil caps are coming from that cover the sports fields. I knew it had to have something to do with sports drinks.

tabman

 

[Terry(Mi)]

When I started hunting water in the mid 90's with an excal, my numbers were very similar to the chart posted, ie 50% foil targets. Most gold rings fall into most machines' foil range. when hunting for rings on land I try to play the odds by circling the target and sweeping the foil range targets to see if the ID stays within a certain point range, and then dig or pass. most chains will ID all over the place, and will get passed by unless theyre lying in a ball or have heavier links. bracelets with name tag/badge (or whatever its called) will jump all over the scale w/DD coil, similar to odd shaped slaw.
I found 7 or 8 rings last year that ID'd as square tab, yet very few ID'd as nickel or ring tab. None ID'd as coin range. Several others ID'd as foil and 60% overall were white gold. white gold reads lower than yellow due to alloys. Its about learning the machine and how much digging you can tolerate. theres alot of nice foil laying around out there. The machines with a slightly more expanded mid-range ID are very helpful.

 

[gobum62]

Most of the time over here in the UK we tend to use Tone I.D more than VDI,that is why +2 is the most popular option and we dig everything over 40 well if its a stable signal that is,i only tend to use the VDI as a backup to confirm if i dig it or not but if the VDI bounces between a high and low figure that is a good indication that its iron so we dont dig it.

Just curious why you use 2+, are you relic hunting or coin hunting. I mainly hunt in old parks, scout camps and old schools so I use 3 tones. Would their be any advantage for me to use 2+?
THANKS
Mike

 

[Mega]

@gobum62 you folks across the pond tend to use the VDI method but over in the UK as we have a wider variation of coins we tend to use tone idea more,i hunt fore what ever is in the ground and that is the bottom line and i could find coins one day and artifact another day you have to remember that our coinage etc goes back over 2000 years and coins come in different shapes,gold,silver and various metals in between so this is why we tend to use tones more.

Some of our hammered coins can be various qualities of silver and most come in the range of say silvewr foil this is just a example of why we dont discriminate foil as we could loose out on a nice silver hammered coin of maybe a 1000 years old.

Hope this helps

 

[tabman]

Hmmm.... T2 using 2+ tones. Where is the tone break? 40?

tabman