Any advantages of Spectra V3 (over a Garrett 2500 w TreasureHound)?

[Eu_citzen]

What about the DFX supposedly transmitting 16 freqencies and analyzing the strongest 2 of the 16 to give you the best information. At least that is the perception that I have been given regarding it.

As I know it sends/transmits 2 freq's. Nothing more, nothing less. That is excluding the harmonics.
Depending on settings it can read 2 or 1 frequency(s).
I have no clue as to where you'd get the 16 freq idea? Never heard, seen nor read it!

As to the SF having more more because of the power being split among the multiple frequencies, that can be adjusted by making more power available so that the same amount of power is available to the MF detector transmisions as is the SF detector.

It would be easier to do as they have done with the V3, to be able to take a pick as to what freq you'd like to use.
The comparision should be done with detectors of the same caliber (e.g. total power available), increasing the power of one MD would not make a fair comparison.
However with more power comes problems like stability. (set to high sens and you'll see)
But also more power means more battery drainage, I believe.

Hope this helps,
Eu

 

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[old_goldchaser]

Check out this link. http://www.kellycodetectors.com/whites/dfx-kinfo.htm There is more information in a report put out by White's engineers.

What about the DFX supposedly transmitting 16 freqencies and analyzing the strongest 2 of the 16 to give you the best information. At least that is the perception that I have been given regarding it.

As I know it sends/transmits 2 freq's. Nothing more, nothing less. That is excluding the harmonics.
Depending on settings it can read 2 or 1 frequency(s).
I have no clue as to where you'd get the 16 freq idea? Never heard, seen nor read it!

As to the SF having more more because of the power being split among the multiple frequencies, that can be adjusted by making more power available so that the same amount of power is available to the MF detector transmisions as is the SF detector.

It would be easier to do as they have done with the V3, to be able to take a pick as to what freq you'd like to use.
The comparision should be done with detectors of the same caliber (e.g. total power available), increasing the power of one MD would not make a fair comparison.
However with more power comes problems like stability. (set to high sens and you'll see)
But also more power means more battery drainage, I believe.

Hope this helps,
Eu

 

[Carl-NC]

What about the DFX supposedly transmitting 16 freqencies and analyzing the strongest 2 of the 16 to give you the best information.

No, the DFX transmits 2 frequencies only. Everything else is harmonics.

As to the SF having more more because of the power being split among the multiple frequencies, that can be adjusted by making more power available so that the same amount of power is available to the MF detector transmisions as is the SF detector.

Sure, that's possible. V3 includes a TX Boost that does that, at the expense of fast battery drain.

- Carl@White's

 

[old_goldchaser]

Ah, but that isnt what Whites says. Though they do state that there are alot of harmonics involved, too many to analyze. However, they specifically stated that the DFX transmits 16 frequencies, not just the harmonics.

quote author=Carl-NC link=topic=305049.msg2229531#msg2229531 date=1269219215]

What about the DFX supposedly transmitting 16 freqencies and analyzing the strongest 2 of the 16 to give you the best information.

No, the DFX transmits 2 frequencies only. Everything else is harmonics.

[/quote]

Ah, but that isnt what Whites says. Though they do state that there are alot of harmonics involved, too many to analyze. However, they specifically stated that the DFX transmits 16 frequencies, not just harmonics. However, I will admit that their description of the method makes things, once I sat and thought about it, unclear as to means and method and why they would state that and then turn around and specify just the 2 frequencies being used. Are they simply trying to confuse the issue? I dont know. But if they are, why would it be necessary? Even with the 2 frequencies, its enough to make the DFX a very effective detector so why confuse the issue, which they have?

As to the SF having more more because of the power being split among the multiple frequencies, that can be adjusted by making more power available so that the same amount of power is available to the MF detector transmisions as is the SF detector.

Sure, that's possible. V3 includes a TX Boost that does that, at the expense of fast battery drain.
- Carl@White's

[/quote]

But isnt it true that most of those that do transmit MF do seem to have increased power supply requirements? I havent speciifically examined or analyzed the power supplies to see what the circuit requirements would be for each to last the specified amount of time but it does seem like the MF detectors power requirements are higher as well as them lasting shorter amount of times compared to SF detectors. The exceptions, of course would be the PI detectors, which are by their nature, another ball game entirely. Look at my detectorpro PI. Uses a 9volt. And lasts 30 or 40 hours. Then look at my Infinium LS and the power supply for it. Same type detector, though with differences. Main one is that the LS has additional circuits in order to provide the minimal target ID and discrimination. Hard to believe that those additions have such higher power requirements but that and the ground lock, I think, are the main differences between the two. Oh, let me not forget the single LED on the LS.

Maybe I am just missing something or just wandering in a circle. And maybe I am just being dumb as brick. Heck.

Thanks for responding Carl. I am really enjoying the mind fest. Its making me think and recover some of my old background. Stuff I havent thought about for years. Its clearing the cobwebs for sure. And If I am wrong, I dont mind one bit. I just enjoy the discussion. Hope its the same for you.

 

[Carl-NC]

However, they specifically stated that the DFX transmits 16 frequencies, not just harmonics.

I pulled out the catalog and you're right, we do say "Only DFX transmits 16 powerful frequencies and processes 2 concentrated voltage-packed frequencies." No, sorry, DFX transmits 2 concentrated frequencies. I'm sure this was a response to a certain competitor's bogus frequency claims, but we should have taken the high road on this. I'll talk to advertising and make sure it doesn't happen again.

But isnt it true that most of those that do transmit MF do seem to have increased power supply requirements?

In general, SF detectors are more efficient because you can resonate the TX coil which dramatically reduces power consumption. Can't do that with wideband detectors.

- Carl@White's

 

[old_goldchaser]

However, they specifically stated that the DFX transmits 16 frequencies, not just harmonics.

I pulled out the catalog and you're right, we do say "Only DFX transmits 16 powerful frequencies and processes 2 concentrated voltage-packed frequencies." No, sorry, DFX transmits 2 concentrated frequencies. I'm sure this was a response to a certain competitor's bogus frequency claims, but we should have taken the high road on this. I'll talk to advertising and make sure it doesn't happen again.

Hi Carl...wasnt aware you worked for Whites. Whoooo boy, does that make me feel dumb argueing that point with you. <laugh> But I am glad that the point is settled. Even though I was wrong...well...at least to the point of the number of frequencies transmitted. I love my DFX and will eventually get me another MXT down the road. I was looking at the V3 early this year but the price break was just a bit too high for me. Maybe next year. The MXT I used to have was a great machine for out here in Colorado. It did very well in the minerals. The DFX has done well as well... I am still learning it as I just got it last year but its done great. Learning how to do the setup isnt easy...pretty long learning curve compared to the MXT. I sold my MXT a few years back after I recovered it and my other detectors after they were stolen. They ended up in a pawn shop. But I didnt feel right using them after that. Kind of felt like violated, ya know. <laugh> Didnt feel like they were mine any more. Plus didnt get back all my extra coils and other gear. So didnt have any detectors for almost 2 years, I think it was. Well, what I considered good ones. I did buy me a cheaper one so I could at least do something, but I wasnt happy with it at all..so got rid of it soon as I could afford to finally get a better one. Still ahving to get the extra coils for everything like I used to have.

Thanks for the great discussion though. Am glad that I now know that it IS only 2 frequencies.

Makes a difference.

But isnt it true that most of those that do transmit MF do seem to have increased power supply requirements?

In general, SF detectors are more efficient because you can resonate the TX coil which dramatically reduces power consumption. Can't do that with wideband detectors.

Okay, yea...I hadnt thought about that. One frequency you can do that but with multiples its impossible. Once you get the the coil resonating it takes very little power, comparatively to keep it going. For those following this who might not know this stuff, its like a tuning fork being struck with one hammer, one strike to get it vibrating and then fewer spaced lighter strikes to keep it vibrating.... But only at one frequency or tone. You cant get do multiple tones. I hope thats a good comparison. Multiple tuning forks would require multiple hammers (ie: more power)

I don't often get to pick the brains of a detector engineer so don't be surprised if I pose some more questions to you. I am looking to try to wind my own coil this summer so I might just have a few questions for you on that. The winding is simple, but tuning it and getting it to do what I want, is another ball game especially with the shape I am considering. Might not even be possible. I have dismantled more than a few older/outmoded coils to get an idea of what I am facing. All have been for single frequency type coils. I can see how the SF resonance is built up and continued by the tuning circuit built into the coil. Its quite interesting in that its easily seen and why it does what it does.

 

[Eu_citzen]

Thanks for clearing that up Carl.

 

[Carl-NC]

I don't often get to pick the brains of a detector engineer so don't be surprised if I pose some more questions to you. I am looking to try to wind my own coil this summer so I might just have a few questions for you on that. The winding is simple, but tuning it and getting it to do what I want, is another ball game especially with the shape I am considering. Might not even be possible. I have dismantled more than a few older/outmoded coils to get an idea of what I am facing. All have been for single frequency type coils. I can see how the SF resonance is built up and continued by the tuning circuit built into the coil. Its quite interesting in that its easily seen and why it does what it does.

I also run the Geotech web site for DIY tech-heads. Lots of info in the forums.

- Carl

 

[old_goldchaser]

I don't often get to pick the brains of a detector engineer so don't be surprised if I pose some more questions to you.

I also run the Geotech web site for DIY tech-heads. Lots of info in the forums.

- Carl

Thanks Carl, I will head over there and check it out.

 

[old_goldchaser]

Went to that site you recommended and all I can say is "wow". Its great. I found more information there in 15 minutes than I had found in months since I decided to try building my own coil. Thanks so much. I have alot of reading to do. And patent section with the various patents and the info provided there is great for background. Also the various coil articles. Just reading the few items I have found so far has helped greatly. And I havent even gone into the forums yet. For the techie its GREAT.

Thanks again.

I don't often get to pick the brains of a detector engineer so don't be surprised if I pose some more questions to you. I am looking to try to wind my own coil this summer so I might just have a few questions for you on that. The winding is simple, but tuning it and getting it to do what I want, is another ball game especially with the shape I am considering. Might not even be possible. I have dismantled more than a few older/outmoded coils to get an idea of what I am facing. All have been for single frequency type coils. I can see how the SF resonance is built up and continued by the tuning circuit built into the coil. Its quite interesting in that its easily seen and why it does what it does.

I also run the Geotech web site for DIY tech-heads. Lots of info in the forums.

- Carl

 

[D-minus]

As an owner of a V3 for the last two months I really don't understand why people keep saying it's difficult to use. I've been digging all kinds of things since the day I received it and haven't had any trouble using it. I just turn it on pick which mode I want to use and go. I've already found two rings (one large gold, one old silver) TONS of clad and some really old coins among other things. I've only had my V3 out 5 times since I got it and I have to say it's not really any harder to use than my ACE 250. I did watch the DVD before I used it and familiarized myself with the controls before going out but it really is turn-on-and-go and can be much, much more if you decide to get into the nitty gritty of it. I really don't know a lot about the machine yet but I can tell you that it's way more accurate at telling me what's in the ground and how deep than the ACE 250 was (as it should be for the price).

I guess my point is that the V3 is an easy turn-on-and-go machine to use and has never ending capabilities that you'll never outgrow. I just don't understand what it is that people have trouble with on this machine.

I'm still kind of a newbie at detecting and I don't find the V3 intimidating or difficult at all. I can't speak to the GTI 2500 since I don't own one but it was on my list when choosing a detector and in my opinion the V3 outshined it.