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Are all 28 Frequencys used?

wvrick

wvrick

Active member
Hello Everyone,

I owned a Explorer XS @ 2001 and knew of the 28 Freqs the detector was suppose to use..... But does the detector Transmit and Receive, Analyze all 28 or is it using less Frequency's than 28? I guess what I'm asking is: Does it REALLY have 28 Frequency's ?

Thanks, Rick
 
It uses the best ones and I think it uses some to analize the ground but no, it isn't using all the frequencies to ID the target. I don't know enough to explain it any more than that and I may be a bitt off. Andy could tell you more about it.

J
 
Minelab's multiple frequency Full Band Spectrum (FBS) technology is the only technology in the world that provides the serious treasure hunter with both deep detection and deep precision discrimination, regardless of ground conditions and target type.

Minelab
 
Years ago some minelab posted how many frequencies are actually processed on each noise channel. There is also information in either the patent application for the FBS technology or in a white paper by Bruce Candy. I think in general they don't use frequencies that end up being close to power line harmonics. This varies from noise channel to channel when they shift the period of one of the base square waves transmitted. But in general they do use several frequencies from 1.5 khz up to 100khz or so if I remember correctly. Bottom line is doesn't make a huge difference for day to day detecting.

Chris
 
n/t
 
I hope that someone will get on here that really knows how it works. My understanding is that all modern detectors work by measuring the inductive value of the target, that is it's resistance to change in AC. Most measure where the induced signal in the target returns on the sine wave compared to the original signal, delay. Minelab works in time. I understand that there are two primary frequencies. The two make up the harmonics for the balance of the 28 frequencies. The trouble is that the power tails off as the harmonics are extended to the higher frequencies. Thus the lower frequencies are more powerful than the higher frequencies. Now with this and $7.00 you can almost buy a cup of coffee.

Ohio Bud
 
An old question that has NEVER been definitively answered.
 
I used to think that the 28 frequencies were used during the 28 second ground balance. Then it picked the cleanest frequency/ies for your ground. And I also thought the 9 channels had something to do with the frequencies. But I was wrong. I guess we will never really know...
 
It is something myself and co-workers talk about all the time, in the demo or instructional video that Whites uses for their V3i it shows real time use on the 3 frequency's while it is in use. I was wondering if ALL detectors use 1, 2, 3, 17 or 28 freq. or really just 1 or 2. :confused:
 
The problem with getting a straight answer is that Minelab doesn't want to give away anything to thier competitors. The more guessing, the better for Minelab. I guess as long as "it" works, that's all we need to know.
 
n/t
 
I was under the impression that all of the frequencies are transmitted, but that the detector only selected a portion of them to be analyzed.


Rich -
 
That is what I think too. There was a White's video that makes a bit of a swipe at FBS and it not being what it is portrayed to be. I don't remember if it is the DVD that comes with the V3 or some other... i'm sure it is on YTube though. I'm not going to look for it because I really don't much care... all I really need to know is that it works... but I think that most of the frequencies are harmonics is correct, but not for sure.

J
 
Thanks for your reply, Its something that bugs me about claims.... I'm wanting a new detector soon, but its hard to see the forest for the tree's...lol I'm looking at both the E-Trac and V3i... I'm impressed with both and its hard to choice.

Thanks Rick
 
It really makes no difference what they claim... the E-TRAC works, and it works really well. It is easy to use (as long as you don't try to make it hard or try to make it be an Explorer III) and will make extraordinary finds at places that are "hunted out". You never have to ground balance it, just just let it choose the quietest channel, put it in auto+3 (sometimes +2 or +1) set a little disc (never hunt withno disc if you want to find masked targets)... and HUNT.

It almost does everything except the digging for you... it will not swing itself but you can hire someone to dig for you if you want it really easy, laff.

Detecting should not be so easy...

J
 
The whites is a great machine too, I dont think you could go wrong with either. Jbow is right, ignore the claims and hype. Talk to the owners and see what they think.
 
I checked in Andy's book 28 frequency's that are set in to 11 channels when you ground cancel it picks one set of the 11 frequency's but it does more than that it analyzes the signal the ground is sending back and eliminates that frequency thus if everything works good it will act like there is no ground interference so does it pick from 10 if it eliminated one?I just took a quick look you need to buy the book there is a lot in there.I sold my Etrac and kept Safari and would not let go of Andy's book waiting for Safari version that is coming out soon.
 
I don't know if Minelab thinks that users would be disappointed if they knew what was really going on or what. That the technology works it the most important thing to most users.

On a side note: I think it is great that we can mention and discuss any brand as a comparison here in the Etrac forum and nobody gets bent out of shape, yet over in the V3 forum their is a sticky forbidding comparisons for some reason.
 
Kinda like the White's official forum. Posters are forbidden from even talking about any other brand. I like whites detectors, but that policy is stupid, so I'm not even a member there.
 
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