Critterhunter
New member
I've read several people make reference to the fact that these FBS2 coils are special in that they have electronics in them to see and track two separate targets at once under the coil. I've searched for this information but can't seem to find anything in relation to that. From what I can find thus far in the technical material I don't see any reference to this, but maybe I missed it?
I see the information on the machine's ability to display two target points on the screen at once, but that doesn't really answer my question. It is possible for a machine to plot two target points on a screen as the coil passes over one target, reports it's VDI on the screen, and then moves on (coil detection field leaves that target and then moves on to the next one) to the other and report it's VDI response as well, but unless I'm missing something that's not really any leap in unmasking ability? It's just noting the first target and then the second one as you swing over one and then the other. It still requires the detection field to move on so that it is not "lighting up" the first target and then can see the next one.
Obviously on any machine where two targets are suspected to be present people just wiggle over the one and then over the other to see the ID of both separately. That would also be a much more accurate way to positively ID your targets, because when two targets are both washed in the coil's detection field at the same time (and have to be laying at the same depth and side by side for this to even be able to happen), the limits of what you can gleam from what a VLF detection field can tell you...results in an averaged number of the combined total conductivity of both items...And I would think FBS2 would still have to obey the laws of physics in that respect.
Because from what I have always read about VLF technology and physics in terms of the coil's field dynamics, two targets in the coil's field at the same time are simply averaged together on the conductivity scale...And the only way a coil's field can see both at once is if they are both laying at the same depth and so close to each other that they would probably have to be touching. IE: The field can not hit a shallower trash item and still continue further down in depth to see a deeper coin. Once the field hits the first metal target it sees it in effect "bursts" or warps around that object and has no ability to go deeper.
I'd be very interested in reading how these apparently static physical laws of nature could be broken in some way. Assuming and expecting that they can't, what wins in unmasking ability is the machine using the sharpest detection field it can (as thin as it can be in the left/right perspective), such as the excellent ability the 12x10 has in this respect, so that it can "light up" the good item and not the trash, as by all rights that is going to give you the truest ID on a target...While, when two targets are soaking in the field at the same time (being that they are at the same depth and close to each other) there simply isn't any way I'm aware of to break apart that signal into two distinct items....But rather the signal is averaged somewhere halfway between the differing conductive nature of the two. If that's still the case then the best way of unmasking is still to try via a sharp field to light up the one target and not the other next to it.
Correct me if I'm wrong, because I'll I'm seeing is the ability to mark one VDI number on the screen and then the next the coil passes over as it sees them SEPARATELY, and not some unique way to break apart the averaged signal of two targets seen both at once, and thus reveal their true nature in ID. If that's the case then a sharper stick still wins over a blunter one in terms of being able to "poke" one object and not another laying right next to it. Sure, being able to visual note two target IDs on the screen at once can have it's perks in terms of easily referencing just what two things you just passed over (which would still have to be seen separately by the coil's detection field and not both at once), but if that's the case then it isn't any special unique ability any more so than what VLF has always been able to do. To get the true ID of a target the other target can not be in the field at the same time, and as far as I'm aware no amount of technology can break apart a combined signal and report the true conductivity of both targets in the field. There just isn't enough "vocabulary" in terms of what a VLF field can tell you about it's interaction with metal objects in it's detection field to be able to relate those kinds of details.
Correct me if I'm missing something here, as I may very well have missed some technical content that's been released which covers such a major break through in technology. If I'm wrong please point me to that technical data as I very much look forward to reading exactly how these seemingly static laws of physics have been broken.
This is one of the questions I want clearified before I decide to sell off some "non-essential" items around the house to raise money to buy this detector.
I see the information on the machine's ability to display two target points on the screen at once, but that doesn't really answer my question. It is possible for a machine to plot two target points on a screen as the coil passes over one target, reports it's VDI on the screen, and then moves on (coil detection field leaves that target and then moves on to the next one) to the other and report it's VDI response as well, but unless I'm missing something that's not really any leap in unmasking ability? It's just noting the first target and then the second one as you swing over one and then the other. It still requires the detection field to move on so that it is not "lighting up" the first target and then can see the next one.
Obviously on any machine where two targets are suspected to be present people just wiggle over the one and then over the other to see the ID of both separately. That would also be a much more accurate way to positively ID your targets, because when two targets are both washed in the coil's detection field at the same time (and have to be laying at the same depth and side by side for this to even be able to happen), the limits of what you can gleam from what a VLF detection field can tell you...results in an averaged number of the combined total conductivity of both items...And I would think FBS2 would still have to obey the laws of physics in that respect.
Because from what I have always read about VLF technology and physics in terms of the coil's field dynamics, two targets in the coil's field at the same time are simply averaged together on the conductivity scale...And the only way a coil's field can see both at once is if they are both laying at the same depth and so close to each other that they would probably have to be touching. IE: The field can not hit a shallower trash item and still continue further down in depth to see a deeper coin. Once the field hits the first metal target it sees it in effect "bursts" or warps around that object and has no ability to go deeper.
I'd be very interested in reading how these apparently static physical laws of nature could be broken in some way. Assuming and expecting that they can't, what wins in unmasking ability is the machine using the sharpest detection field it can (as thin as it can be in the left/right perspective), such as the excellent ability the 12x10 has in this respect, so that it can "light up" the good item and not the trash, as by all rights that is going to give you the truest ID on a target...While, when two targets are soaking in the field at the same time (being that they are at the same depth and close to each other) there simply isn't any way I'm aware of to break apart that signal into two distinct items....But rather the signal is averaged somewhere halfway between the differing conductive nature of the two. If that's still the case then the best way of unmasking is still to try via a sharp field to light up the one target and not the other next to it.
Correct me if I'm wrong, because I'll I'm seeing is the ability to mark one VDI number on the screen and then the next the coil passes over as it sees them SEPARATELY, and not some unique way to break apart the averaged signal of two targets seen both at once, and thus reveal their true nature in ID. If that's the case then a sharper stick still wins over a blunter one in terms of being able to "poke" one object and not another laying right next to it. Sure, being able to visual note two target IDs on the screen at once can have it's perks in terms of easily referencing just what two things you just passed over (which would still have to be seen separately by the coil's detection field and not both at once), but if that's the case then it isn't any special unique ability any more so than what VLF has always been able to do. To get the true ID of a target the other target can not be in the field at the same time, and as far as I'm aware no amount of technology can break apart a combined signal and report the true conductivity of both targets in the field. There just isn't enough "vocabulary" in terms of what a VLF field can tell you about it's interaction with metal objects in it's detection field to be able to relate those kinds of details.
Correct me if I'm missing something here, as I may very well have missed some technical content that's been released which covers such a major break through in technology. If I'm wrong please point me to that technical data as I very much look forward to reading exactly how these seemingly static laws of physics have been broken.
This is one of the questions I want clearified before I decide to sell off some "non-essential" items around the house to raise money to buy this detector.