HOW CAN A 9 INCH COIL AIR TEST THIS DEEP??

[calabash digger]

I air test some relics and coins with my 9 inch coil , how can it be this deep? [video]https://youtu.be/_gr7DG9UczM[/video]

 

[John-Edmonton]

Please ...........do your research!

GARRETT AT MAX COIL TO THE SOIL DEPTH TEST (video) I am honored that you are following me around with your Douce. You have some interesting comparisons. The AT MAX was not designed to beat out other metal detectors. Depth alone should never be the number one reason for purchasing a metal detector, just as speed is not the number one reason for purchasing a car. However......for the cost of the MAX vs, the DOUCE, you sure get a lot of bang for your buck, plus it's made in USA and works as good in water as on land. Problems with unit? Repaired quickly in USA. Keep up your fine work.

If you had watched the recent video, you would have seen a test of a Merc. dime in the ground, getting whispers of a signal at 12" in true all metal mode, which still gives you a VDI number, (not accurate at great depths) plus the ability use iron audio to rule out iron.

 

[Tom_in_CA]

thanx for posting the video. I don't imagine you could replicate those depths in actual field hunting. But it was an interesting video to watch none-the-less.

I've had machines which can do air-depth tests like that. Yet the only practical place where I could ever replicate such depths, is in white-dry sand on the beach, or wide open beach sand where I have the liberty to chase insane whispers with no regard to junk vs non-junk. (iron versus conductive, high vs low, etc....)

 

[Southwind]

Depth alone should never be the number one reason for purchasing a metal detector, just as speed is not the number one reason for purchasing a car.

With all due respect John, the answer to both of these can be yes as a valid reason for buying.

 

[calabash digger]

We know depth in ground is less but in ( MY SOIL) it will achieve close to air test depth. I can make it hit a 14 inch large cent here and consitenly will hit 12 inch half, 10 inch merc. To be honest I don't know of a deeper digital machine out there coil size for coil size.. John I thought you would be out finding flour gold with your new AT MAX today ! innochio can anyone say hype? On a serious note the 9 inchs on the air test I said you had in your charts on the dime was correct wasn't it?

 

[slingshot]

Depth alone should never be the number one reason for purchasing a metal detector, just as speed is not the number one reason for purchasing a car.

With all due respect John, the answer to both of these can be yes as a valid reason for buying.

I understand what you're both saying. I was out with my sniper coil at my favorite ball park and a fellow with a more advanced model from my brand came out with his 12" coil and was ready to sell it. I showed him my finds and explained all his obnoxious signals- but I don't think I ever convinced him he just had too much power for where he was. I was kinda hoping he would let it go cheap so I could have that setup for other sites that needed raw depth.

 

[calabash digger]

Just proves you need to know your machine . The great thing about the deus is you can adjust that power with sensitivity as all detectors can be cut back . The deus also has another feature that most detectors don't have a tx power or coil transmit power you can make it as weak or strong as you need . I have cut it back in very thick iron before and works very well with less power one more advantage the deus has over the at series. more is not always better. A really really adjustable machine think about it can be setup for raw depth or the thickest trash that you can hunt...

 

[MI-AuAg]

"how can it be this deep?" Because it's air!

"Air tests" are a lot like playing the "air guitar", it's a momentary feel good thing, be it with music, or the wonders of our detectors.

Point it in the dirt, throw in some Georgia red clay, some conductive salts in an agricultural field, or a smattering of magnetite. Results always change in the real world, sometimes, very dramatically.

I limit my "air testing" to veryfying a coil/machine is functioning properly, or checking tone/VID's of various conductors. Yet, I still feel very confident in the abilities of my machines/coils.

My favorite "air guitar" tune is Freebird by Lynyrd Skynyrd. Don't hold your breath waiting for a video of me playing the "air guitar". Nor, I assume will you see a group of detectorist's in the local park or beach walking around, pointing and swinging their detector coils skyward.

 

[Southwind]

I understand what you're both saying.

Agreed slingshot. I understand what John's point is. I'm just more pointing out there are exceptions. An example is our city park where all the old coins are extremely deep. I have a buddy I have hunted with for 30+ years and we had pretty much cleaned that 130 year old park with the depth our then detectors were capable of. I bought an E-Trac and it was like a whole new site again. After my buddy watching me pull Indian Heads, V-Nickels, barbers and seated's, he bought him an E-Trac based solely on the depth ability and started pulling the goodies himself. And it was all from depth. Before it was 8-9" at most. The E-Tracs had us pulling keepers at 10"+.

My favorite "air guitar" tune is Freebird by Lynyrd Skynyrd. Don't hold your breath waiting for a video of me playing the "air guitar".

Ah come'on AuAg I'd like to see that.

I do put a little more weight behind the air tests. I've done a bunch and you can get a good idea of depth ability from an air test. Of course ground will be the major factor, but I have never had a detector go deeper in the ground than in an air test with the rare exception of the halo effect. In my opinion, I guy can get a good idea of possible depth from an air test.

 

[calabash digger]

if I had that kind of soil I would be swinging a pi . ALL vlfs will suffer there some less than others . You never see me claim its that deep in all soils. I agree with the above statement about the air test as to see the potential of a detector.

 

[MI-AuAg]

I catch enough grief from my daughters when Freebird is playing!

I get where you're coming from Southwind. In terms of a POSSIBLE maximum depth. The true maximum depth is dependent on so many variables, like ambient EMI, ground phase, etc. Those thing vary tremendously from area to area. As Tom in CA pointed out, replicating those depths is rarely possible. In practical terms the "air test" doesn't guarantee anything in real performance in the dirt. Lots of people who see the videos of air test results, can't replicate anywhere near those depths and get pretty growly and negative on their machines, even though that's what ambient conditions allow in THEIR areas.

It's like dangling that carrot out there beyond reach, causes more frustration, than practical expectations.

 

[calabash digger]

this is your chart correct?

 

[Southwind]

My favorite "air guitar" tune is Freebird by Lynyrd Skynyrd. Don't hold your breath waiting for a video of me playing the "air guitar".

My impersonation of Billy Gibbons of ZZ Top. I didn't have a NuDu cap like Billy's or some cheap sunglasses and suit so I made due with a stocking cap and jacket LOL.

[video]https://www.youtube.com/watch?v=EdEyMVhyGu0&list=PLfJZHEpNVSQXeZfxTjC7murPpNwq68pTo&index=10[/video]

 

[MI-AuAg]

My favorite "air guitar" tune is Freebird by Lynyrd Skynyrd. Don't hold your breath waiting for a video of me playing the "air guitar".

My impersonation of Billy Gibbons of ZZ Top. I didn't have a NuDu cap like Billy's or some cheap sunglasses and suit so I made due with a stocking cap and jacket LOL.

[video]https://www.youtube.com/watch?v=EdEyMVhyGu0&list=PLfJZHEpNVSQXeZfxTjC7murPpNwq68pTo&index=10[/video]

 

[Architex]

A test in air, comparing machine to machine, is a fair test of comparative depth expectations in dirt. Depth in dirt will be less of course, but relative strength will be comparable.

 

[Southwind]

^^^^^ Couldn't agree more Architex. At least that has been my conclusion from many many tests.

Now I know I've seen the claims that "some detectors don't air test as well as others" but, when configure right I have found that to be less an issue.

 

[dfmike]

Depth alone should never be the number one reason for purchasing a metal detector, just as speed is not the number one reason for purchasing a car.

Amen to that. Personally I think that understanding a machine's language, strengths and limitations is more important than maximum depth alone.

 

[calabash digger]

You have to understand a machines language, limitations and strengths to get the maximum depth out of it. Kinda a straw man you guys using in this discussion because there is way more to the deus than it just being deep .

 

[sprchng]

Depth is of limited value if I.D. goes down the drain with it.
I.D. is not too important to a relic hunter that digs most everything but everyone does not just dig relics.

 

[hairymonsterman]

Coil for coil, if air tests are to believed, the Rutus would be deeper.

Air test on Deus.
https://youtu.be/5ze1jKoQYb4

Air test on Rutus.
https://youtu.be/IT25ENXGO9A