Whats HOT In Detectors?

[Michigan Badger]

What's HOT In Detectors?

I stopped buying and testing metal detectors about 2 years ago and I'm wondering if any maker has come out since then with anything really (I mean really) improved?

Or are we basically still talking the same old Explorers, Tesoros, Whites, etc., that have been around for a decade or more?

What's hot today?

 

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[Frankn]

Re: What's HOT In Detectors?

OK Digger, I did mention that it was a plate! I like to base my comments on facts and not make unfounded comments so I just went out and got my XLT from my motorhome. The batts. were low at 11V, I have worked 3 beaches on those batts. I didn't have a real full VW so I used my dune buggy which was a '64 VW. I used the coin & jewelry mode. It picked up at 25". Believe it or not the MH also picked up at 25". Now to the actual test. The dime air tested at 11" actual measurement. It actually tested better with a fast swing!OK Digger, lay it on me, what does yours do.

Hunter, have never seen a detector that tested better in the ground than in air.
The only difference is the resistance of the earth which drops the signal.
Of course that is just what I have seen in actual tests. And working in electronics, it seems to follow theory. Frank
PS: A little note before someone calls me on it. The Earth really conducts RF signals fairly well, it's the mineralization that is the resistance and it varies widely. That's why the air test is a valid standard.

 

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[Digger]

Re: What's HOT In Detectors?

I guess I'm missing the point. Since we're talking about finding coins, what does a plate or Volkswagen have to do with this subject? As a general rule <- NOTE you will get roughly the same depth as your coil size on coin sized targets. Yes under the right conditions you might get slightly more or less.

I do agree that the air test is as good as you're going to get on depth. Again, there are always exceptions to the rule, but that is the rule.

 

[Treasure_Hunter]

Re: What's HOT In Detectors?

Hunter, have never seen a detector that tested better in the ground than in air.
The only difference is the resistance of the earth which drops the signal.
Of course that is just what I have seen in actual tests. And working in electronics, it seems to follow theory. Frank
PS: A little note before someone calls me on it. The Earth really conducts RF signals fairly well, it's the mineralization that is the resistance and it varies widely. That's why the air test is a valid standard.

F. Can't tell you why, but ask anyone who has used an Excal or Sov GT how they airtest, they will tell you lousy, but in the ground they get amazing depth....

 

[Keppy]

Re: What's HOT In Detectors?

Hunter, have never seen a detector that tested better in the ground than in air.
The only difference is the resistance of the earth which drops the signal.
Of course that is just what I have seen in actual tests. And working in electronics, it seems to follow theory. Frank
PS: A little note before someone calls me on it. The Earth really conducts RF signals fairly well, it's the mineralization that is the resistance and it varies widely. That's why the air test is a valid standard.

F. Can't tell you why, but ask anyone who has used an Excal or Sov GT how they airtest, they will tell you lousy, but in the ground they get amazing depth....

Come on now....TH... Amazing depth..... I got a Sovereign that will not get any more depth than my 1500.....on a coin......

 

[Frankn]

Re: What's HOT In Detectors?

Digger, I was talking about how to test the sensitivity of a detector, not about how to find coins. I realize you used the VW as a jest so I went along with it.
I think we agree on the air test, but I am still leary of the coil to dept ratio. The detector gives you the depth. The coil is merely two wire loops. The larger coils merely spread out the same power output of the detector. In fact if you get past a certain size, the coil will not even pick up a small object like a coin.
The processing of the detector is the thing that gives you the ability to pick up coins at greater depth. If you put the same size coil on a basic unit and a high end unit, the high end unit will allways go deeper!

The electronic theory works like this: the further you spread the distance between the transmit coil loop and the receive loop, the deeper it will detect objects. The kicker is that once you spread them so far, you have lost the ability to pick up small objects. Think of a 2Box setup.
The concentric has one coil loop inside another loop. the bigger the loop the futher you spread them apart.
The DD style has the coil loops side by side so the bigger the coil the further you separate the edges. slightly different, but the same theory.
Well I guess that is enough theory for a post. Frank

 

[Digger]

Re: What's HOT In Detectors?

Well Frankn I will say that the depth standard I'm quoting is rather old. Technology may have changed things, but that is the way it used to be. If you had a 6" coil you could expect to get 6" with all things being equal.

 

[Treasure_Hunter]

Re: What's HOT In Detectors?

Hunter, have never seen a detector that tested better in the ground than in air.
The only difference is the resistance of the earth which drops the signal.
Of course that is just what I have seen in actual tests. And working in electronics, it seems to follow theory. Frank
PS: A little note before someone calls me on it. The Earth really conducts RF signals fairly well, it's the mineralization that is the resistance and it varies widely. That's why the air test is a valid standard.

F. Can't tell you why, but ask anyone who has used an Excal or Sov GT how they airtest, they will tell you lousy, but in the ground they get amazing depth....

Come on now....TH... Amazing depth..... I got a Sovereign that will not get any more depth than my 1500.....on a coin......

Keppy, I have 2 Sov GTs and they both get great depth.....Maybe your soil is different there.....I have pulled coins and gold targets in the 15"+ range using the WOT coil and even more with the SEF 15"x18" Butterfly coil.......

 

[Frankn]

Re: What's HOT In Detectors?

Treasure_ Hunter: Whites has a detector that it calls the Sierra Madre. They claim 5 feet depth with their 13 coil. Maybe you should check it out. Frank

 

[willie d]

Re: What's HOT In Detectors?

Hunter, have never seen a detector that tested better in the ground than in air.
The only difference is the resistance of the earth which drops the signal.
Of course that is just what I have seen in actual tests. And working in electronics, it seems to follow theory. Frank
PS: A little note before someone calls me on it. The Earth really conducts RF signals fairly well, it's the mineralization that is the resistance and it varies widely. That's why the air test is a valid standard.

F. Can't tell you why, but ask anyone who has used an Excal or Sov GT how they airtest, they will tell you lousy, but in the ground they get amazing depth....

My Sov GT w/WOT coil gets about 6-7" in air test. I have pulled quarters at 14"+ in wet sand.

 

[stasys]

Re: What's HOT In Detectors?

I stopped buying and testing metal detectors about 2 years ago and I'm wondering if any maker has come out since then with anything really (I mean really) improved?

Or are we basically still talking the same old Explorers, Tesoros, Whites, etc., that have been around for a decade or more?

What's hot today?

 

[Digger]

Re: What's HOT In Detectors?

I would think the answer to this is pretty obvious. You can go to a few specialty boards and see a lot of posts about old dried up sites being rejuvenated thru the use of newer detectors. I personally have experienced this myself. I've been hitting our city park for more than 20 years with every type of detector I could get my hands on, and only in the last few years has detectors improved to the point that this park is worth hunting everyday again. I see the same thing happening all around the globe and mainly with a few detector models. Seems obvious.

 

[gleaner1]

Re: What's HOT In Detectors?

Thanks to the FCC, I own the hottest detector allowed by law, along with everyone else.

 

[Frankn]

Re: What's HOT In Detectors?

Gleaner 1 has a point. They are all probably running max power. The FCC allowes you to transmit on certain frequencies at a set power output with no license. Once you exceed that output you need a license to operate the unit and the unit has much higher standards to meet. The main reason for this is to eliminate interference with other electronic equippment. Frank

 

[Digger]

Re: What's HOT In Detectors?

I thought along the same lines Frankn but when I asked a detector tech if it was the case I was told No. He said that it was a "balancing act" between power and over saturation. The FCC had nothing to do with the power the choose to use, but more a stability issue.

 

[gleaner1]

Re: What's HOT In Detectors?

I thought along the same lines Frankn but when I asked a detector tech if it was the case I was told No. He said that it was a "balancing act" between power and over saturation. The FCC had nothing to do with the power the choose to use, but more a stability issue.

Digger good point. But the fcc does in fact regulate output power of rf devices. They must to ensure proper function of upper level stuff like communications, police radios, avionics, on and on. Theoretically, you can go deeper if you can transmit more power.

 

[LukeTHr]

Re: What's HOT In Detectors?

Not intending to raise a stir, but from my Ham radio and CB radio experiences, the FCC is probably not watching metal detector manufacturers too closely. I base this on the fact that there are guys out there running into the thousands of watts in transmission power all the time on CB and rarely if ever is anything done to stop it. Ham radio has it's share of a$$hats that are pretty much ignored also. Couple that with the fact that all kinds of electronic equipment today emits interference because of cheap construction it isn't even funny. I would have to believe that most detector power is most likely based on the need for a stable signal so the operator doesn't get frustrated by erattic (sp) signals and quit the hobby. I think that the metal detector industry here in the U.S. is still taking pride in the product they produce and aren't out to crank out just to just turn a fast profit. At least, that is my take on it.

 

[gleaner1]

Re: What's HOT In Detectors?

Where's woof!?

 

[lookindown]

Re: What's HOT In Detectors?

If you guys say some detectors will detect a coin deeper in the ground than it will in an air test, I believe you. But does anyone know why?

 

[extractor]

Re: What's HOT In Detectors?

If you guys say some detectors will detect a coin deeper in the ground than it will in an air test, I believe you. But does anyone know why?

moisture conducts signals ,,, That's why the doctors use a lubricant when doing a ultrasound .

 

[Treasure_Hunter]

Re: What's HOT In Detectors?

If you guys say some detectors will detect a coin deeper in the ground than it will in an air test, I believe you. But does anyone know why?

moisture conducts signals ,,, That's why the doctors use a lubricant when doing a ultrasound .

That is why you get louder and deeper signals in the rain or after a rain when the ground is good and wet.