Metal Detector Depth

[herb n surf]

I've read that the FCC regulations actually limit the depth that metal detectors sold here in the USA are capable of. If that is the case are metal detectors sold in other countries capable of better target depth ? I saw a video of a Russian made metal detector that seemed to air test way better than any detector I'm familiar with . http://www.treasurenet.com/forums/o...ssian-secret-weapon-aka-signum-mft-7272m.html . What gives? Can these detectors be brought into the USA ? Any comments or information would be appreciated .. Have a great day ..

 

Amazon Forum Fav 👍

Treasure of Victoria Peak - Grab it through Amazon!

[Tom_in_CA]

Nah, that's an old myth. A wive's tail about those supposed regulations that dumb down machines, via frequencies or send-signal, or whatever. There's a physical principle of "diminishing returns" that it WON'T matter how much more signal you can send into the ground anyhow. There is just a physical limit on the way detectors work, from the return signal off the target, etc...

There's also USA made detectors that can mimick the results of those often-posted odd-ball company's machines. Like the Fisher 1266, for example can be made, in an air test, to get a quarter at better than 1.5 ft. deep! But the problem for all such machines like that, is they're just too-squirrelly sensitive to be used in average mineralized ground, in junky environs, etc.. In other words, you might get those results in dry white sand, where targets are spread out for individual beeps, but in most other environs, it would just turn into a cavalcade of chaotic noise, the disc. would "hit a brick wall" after 6", and so forth.

Heck, you can get some nugget machines (like some of the Minelab nugget machines) that can probably get a quarter to nearly 2 ft. deep! But what the heck good would that do anyone for most conditions? You'd be be-devilled by any little pinhead, straight-pin, etc...

 

[TCosbyJr]

Tom more than answered the question; however if you want to do some reading here is another post on the forum about it too. A quick Google search will find more than you would ever care to read.

One thing to point out are the 2 box detectors. Those detectors are good for 15 to 20 FEET+. If there were FCC restrictions/regulations they would not exist.

 

[Jason in Enid]

Yep, Tom nailed, as usual!

 

[Muddyhandz]

Tom,
Do me a favour and stop talking about detectors that you know very little about. Like the 1266X.
This is like the 4th or 5th post (that I've seen) where you talk about hitting a brick wall at 6 inches, unstable and squirrelly, and in another post, "the dual disc. is just a gimmick" and one will get fooled into digging nails often.
To someone who is a master with that machine, your "expertise" is just simply annoying!
It's so ridiculous! The places I have excelled in are "Junky environs!" That puppy is killer on plucking non-ferrous out of thick iron beds.
You have a lot of great posts. Just don't talk about that detector anymore unless you've used it full time.
It takes a lot of years to fully understand that machine.
Thanks.

 

[Tom_in_CA]

muddyhandz, your point is "duly noted". I have used the 1266 before, and hunted along-side users of them, who have used it for many years. The observations are from my own observations of it. Albeit not having used it for "years", but did check it out with oodles of settings over flagged targets, in various sites. And from those users I hunted along side of. They relegated it to only certain hunt sites, and soil types. Perhaps you have kinder soil in your area?

I took a 1266 to a certain field where I suspected deeper coins were at, than my other machines could reach. And my observation was, that no matter how I set the disc on flagged targets (signals that I would flag with each machine, and try with multiple machines), was that the ability of the 1266 to tell high verses low conductors, beyond 6" or so, wasn't good at all. And forget using it on the wet salt beach for instance. (esp. when you start to get cinnimon colored minerals there).

But yes, some people have adapted to the chatter, and do well with it for certain area, certain types hunting, etc.. The same can be said for ANY detector I suppose, that if anything detrimental is posted to its ability, someone else can come on a forum saying that they do quite well with the machine, go deep, use it in adverse conditions, etc... In other words, any machine will have its fans. And if someone posts a "supposed" weakness of a machine, someone else will come on saying they are unqualified to say any such thing "unless they have used it for many years".

 

[wingmaster]

Any electronics have to except some interference so it doesn't interfere with other critical electronics, if they didn't you would probably get a little more depth and probably not as much EMI I'm thinking.

 

[Muddyhandz]

Tom,
Put yourself in my position. I've been using that machine for a solid 20 years now. That's why I said "unless they have used it for many years......."
I appreciate your response. All I'm really trying to express is the problems that occur when one speaks about a certain machine several times that they have limited experience with.
Sure, my soil is kind but I mainly hunt in really thick iron beds.
Now, let's try something here to highlight my point.
My buddy was using a minelab for years before I turned him on to relic hunting. He now has been using a few tesoro's and presently is learning the 1266X.
Because he is a very analytical person, just for his own piece of mind, grabbed his minelab, gridded an area that is just choked full of iron, and spent an hour without getting a signal.
His description of the ordeal....."a constant nulling effect."
He then took a simple silver u-max and worked the entire gridded area and found a handful of non-ferrous relics. He said it made him sick to his stomach.
Based on this experience, (and a few other minelab users that I followed behind and found missed goodies)
do I now go on the world wide web and state that those machines can't handle iron, nulling out, missing tons of non-ferrous goodies?
Well, I did now to make a point to you.
Now think of all the minelab users that will get on here and defend their machines.
See where I'm going with this?
I'm willing to admit that I'm not fully qualified to post about minelabs. Which is why you won't find a post with me talking about them.
Except on here.
Cheers,
Dave.

 

[Tom_in_CA]

muddy, there is no doubt as to your minelab friend's results in that iron-riddled spot. The explorer or sov he was using .... while they may be power-house great deep machines, are NOT going to pull targets out from amidst iron that well. I mean, considering the power-house that they are, they're ok (better than the yester-year fast motion machines). But yes, a silver u-max will kick an explorer or sov in the b*tt when it comes to seeing through and around small iron. On the other hand, that silver u-max will not go as deep, nor have dazzling TID's like the minelabs. So there are pro's and con's. And yes, there are "pro's" for the 1266 as well. There's a certain white sand beach near me, that they work great on, and go deeper than anything a person can use in such locations. But those same persons will put the 1266 back in their truck and get another machine, if they're going to hunt the wet sand there, or if they're going to turf hunt (where a little TID is "in order", etc...)

But yes, in the future, if I post my thoughts on the 1266, I will make sure to note that others have adjusted well to it (even in junky environs), and that this is just my opinion.

 

[LuckyLarry]

Well, here are two of the depth monsters compared together: And yes, there are federal limitations on radiated power because it can interfere with radar, police and ambulance communication, x-ray, air traffic, etc. It is not a "rumor", it is true that America has restrictions on radiation fields. And no, it's not heresay or opinion either. This may be why there are no outlets for their sales here, or it may be politics as usual too..

They do search deeper than American and Australian detectors, and they do not behave badly when used as they are designed for, which roughly translates to "go deep".. Here are a couple of the Federal regulations lightly discussed, although little has been established as far as actual research and proof one way, or another.. There are other regs too, but I'll let others find them and post them.. Additionally, this is why heads are not scanned at airports, because they can affect metal plates which can in turn affect our brains, although the jury is still out in that discussion, it another political posture/stalemate junction, at best. It is a myth (that it's a myth) about metal detector radiated power though, plus exceptions are made in the case of the department of defense (where I used to work) concerning metal detector radiation (field) intensity. Those are oftentimes 10x the power allowed for non-defense use, but I wouldn't want that much Department of Defense magnetism around (my) brain... FYI, trained dolphins are sent to put a hook on a grip on any nuclear torpedo that has failed in testing and fallen to the ocean floor, and the failed torpedoes can be as deep as 100 feet, located with a hand-held metal detector. And no they are not magnetometers or magnetic spectrometers either. They are not available for us to buy either, they are designed for defense of our country.

Enjoy: Security Screening







Compared with each other:



Enjoy,

Larry

 

[Dixiegal]

I've read that the FCC regulations actually limit the depth that metal detectors sold here in the USA are capable of. If that is the case are metal detectors sold in other countries capable of better target depth ? I saw a video of a Russian made metal detector that seemed to air test way better than any detector I'm familiar with . http://www.treasurenet.com/forums/o...ssian-secret-weapon-aka-signum-mft-7272m.html . What gives? Can these detectors be brought into the USA ? Any comments or information would be appreciated .. Have a great day ..

I don't think so as our White 808 TM will go 10 ft and then the pulse induction units will detect down to 30-40 ft. Our PI will go 30 ft. Thats deeper than I ever plan to dig.