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Omega Nail Board Test

R

Ronk

Active member
I saw the Omega Nail Board Test for the first time and it looked real impressive except there are so many Metal Detector Test videos and I still can't figure out why they sweep targets across the coil so fast all you see is a blur! What's wrong with testing at NORMAL Speeds?! I saw one video that was not in english but he moved the target so fast across the coil,it made the Speed of Light look Slow! If I tried that,it would throw my shoulder out of kilter! I know this not a Compass forum but the nail test board for the Coin Scanner looked Great but I don't know if the coil was C or DD!

HH!
RonK
 
It depends on what you call normal. Motion detectors require a sweep speed and if I remember right it's about a 3 second sweep speed for a three or four foot sweep. On video it can look like the speed of sound. I had a older Whites I used to whip hard and fast to get good disc and depth. Now as far as that Compass you seen in the video I don't believe there were any DD coils during that time period and none available for the Compass brand. But I may be wrong, can anyone else verify this? HH, Woodstock
 
Forgot to mention that "Not All" videos I saw were that fast,I DID see some videos that were at the Correct Speed either testing OR out in the field.I saw oodles of videos for detector testing and I'm not trying to be negative,but some of them were down right Useless! Some were just a waste to even post!
The Only thing that really counts is being out in the field in the real world.Not having targets planted ahead of time! I saw a video like that once.No one finds a silver coin every single time they get a signal"Except in their own collection".And in their own dream!That video was exposed as fraud.
I'm still looking for a video with comparing 2 different brands with 2 separate people,(One for each detector) the same size and type of coil and similar settings as close as possible and a "Separate Camera operator" showing the settings for each detector in a Real World Situation so that would keep from having 1 person doing the testing that might be Biased towards the other brand.Just want to see a Fair test.When one thinks he's found a good signal maybe down about 6 or so inches, let the camera man show the detectors settings and then have the other brand to check the same signal and show His settings as well just to make it all fair. Compare signals and VDI and or Audio.Have the target dug and then then see what it really is.
I don't think that's really asking too much! Maybe I should ask" Myth Busters!" But that wouldn't work because they are really on the same team either way you slice it.

HH!
RonK
 
If you want to see some good honest Omega field videos, check this guy out on You Tube. He does other detector brands too.

http://www.youtube.com/user/DirtFishing#p/u/45/4gp2NLkBaxc


The only video I think he made a possible mistake on was the AT Pro vs E-Trac. I think the E-Trac frequency was freaking out the AT Pro. In a separate AT Pro video, the machine did quite well. Enjoy.

I have no affiliation with this person. Just think he does good quality, fair videos.
 
I'm not completely positive on this, but it's been my understanding that the DD coils originated at Compass are were designed by John Earle. Any one have more input on this?
 
I want to correct my previous post. The DD coils were indeed invented at Compass but by Don Dykstra and not John Earle. My apologies. John Earle went on to White's where he became their coil designer.
 
downeaster said:
I want to correct my previous post. The DD coils were indeed invented at Compass but by Don Dykstra and not John Earle. My apologies. John Earle went on to White's where he became their coil designer.
Click to expand...
Thanks Steve, that's very interesting info you posted.------I had Compass detectors "way back then" and they were very good machines, maybe even before their time.-----Compass had good people working for them.-----I always wondered who came up with the DD coil.--------Thanks again :thumbup:-----------------Del
 
Hi Del, Great to hear from you.I too used Compass detectors way back when, still have one. Compass made some terrific detectors and I agree that some of their features were ahead of their time. Wonder what they wiould be like today?
 
I've seen the video and there are two things to underline: 1) he sweeps too fast 2) he sweeps too NEAR to the board (sometimes I can hear the overload tone).

I tried dozens of times with gamma and my board and never had same results, until I ... lowered the coil on the board. If you lift the coil, the coin will not sound anymore. It sounds strange to me, because I think that lifting the coil the edge of the cone can hit only the coin, while lowering the coin the magnetic field can embrace both coin and nails...

So this is a question for Monte: what should be a "standard" distance to the board?
 
I also figured raising the coil would do better because of the small tip of the cone BUT now I have been doing some research and a few others say that the pattern of the Concentric coil is not really a cone or an ice cream cone shape like we all thought all these years.Also they say a DD patters is really not exactly like we thought either. I've read that the detected target plays a part as to how the EMF is shaped.It was kind of explained but I am still a little confused.I've always tried raising the Concentric coil higher to reduce the field so I can better close in and pinpoint the good target in the middle of junk targets.Sometimes it works and sometimes it don't depending on some variables. I think one problem is that if you are using a Motion Disc then the coil Has to be moving to detect the target and even raising the coil and sweeping you would have to make extremely small strokes back and forth to detect the the good target.One more thing.. It seems like if you were using an Non Motion mode with a concentric like pattern with a small area at the end of the cone...If it really is a cone..then it would be easier to go in between the nails and pinpoint the coin without hitting on the nails.It was just a thought.I've been trying for years to figure out how metal detectors and coils react but it seems like it's an never ending thing.Something new or unusual or different than I thought always come up.
I wonder if the Nail Board Test was under the surface of the ground if results would be any different!? I don't remember if there was anything said about the Height of the coil from the Nail Board doing the test.Sweep Speed will make a difference as well as Sensitivity and disc settings,coil type and size and maybe other settings depending on which detector being used.I noticed some people doing the test on a wood floor inside but I did the test outside on the ground "After" I made sure there was no metal in the ground under the Board. I used a Small Concentric coil..5.5 inches with different heights and sweep speeds and disc settings and the detector I used did a great job on all sweep angles,variable heights and sweep speeds and disc settings.
I have seen just about every Demo video out there and there and in MY opinion there are way too many people swinging way too fast and a lot of videos are simply a waste of time as far as learning anything Although I have seen a lot of Fair and Honest videos..I have also seen a lot of Unfair videos and not knowing who or what was at the other end where the controls of the detector are that you could not see.
Still the best way to find all the answers is to be out in the field in the Real World where it counts and pay attention to settings and conditions. As far as raising the Concentric Coil higher to the small tip of the So-called Cone,that's still a mystery to me also.Didn't mean to be too long winded!

HH!
RonK
 
Thank you Ronk for sharing your experience, I agree 100% to your post!
 
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