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Re: "UNDER THE IRON CARPET"
Posted: Mon May 18, 2026 7:48 am
by EL NINO
NASA-Tom wrote: ↑Sun May 17, 2026 11:56 pm
Ok......... sounds good.
Those nails are so thick that........ I question........ if any detector can/could detect anything (coin-sized) under THAT THICK of a carpet-of-nails!
That's another very good question... I personally think that small coins 15.5 mm nickel coins low conductor and small 10 cent US Dime high conductor .. will be detectable somewhere at the level of the depth of the iron carpet,, maybe a few centimeters lower.. under the iron carpet.. - but it will definitely be a good challenge for every detector tested... and coil..
This iron carpet definitely has zones of slightly higher but also slightly lower iron density... and there I will make 12 entries... for test stakes.. , so testing the entries for the stakes with coins .. I will have to place and mark them before filling the iron carpet with soil...
Re: "UNDER THE IRON CARPET"
Posted: Mon May 18, 2026 12:42 pm
by NASA-Tom
Although we are continuously working on it........ I do not think that any current-technology detector .... is technologically advanced enough to see through that dense carpet of nails.
I'm also concerned about how many high-tone falses that Monte Magnum test-bed (carpet of nails)..... will produce!
Re: "UNDER THE IRON CARPET"
Posted: Mon May 18, 2026 8:43 pm
by EL NINO
That is also one of the main purposes of this testing... in the test the detector must have the iron discrimination set so... that a possible false response from iron in the carpet is eliminated or strongly suppressed,,,
Very few detectorists realize that 2-3 or more nails under the detector coil can combine into a very positive detector response -similarly- as a possible good signal of a non-ferrous target...
That is the essence of detection on some of my very old terrains...which also serve as reference terrains for testing the quality of discrimination and also for unmasking the detectors that I use in detection...
At the same time, I do a very precise analysis of dug non-ferrous targets vs. unintentionally dug iron targets..which gave a very good response as a non-ferrous target..
Ps. Mr. Dankowski....The name of the test "Monte Magnum" seems very fitting to me...always I have always respected Mr. Monte Berry.. for his advice and opinions and experiences from his detections..as well as regarding the detectors he used in detections in Ghost Towns...
and I have always considered and still consider his 2D separation testing to be a very important component in separation tests...and it has brought me very nice findings...
Re: "UNDER THE IRON CARPET"
Posted: Mon May 18, 2026 11:48 pm
by NASA-Tom
It sounds like you are absolutely in the right direction...... with your Monte Magnum Masking Membrane ........ especially if you are armed with the knowledge that: 2 (or more) nails under the coil......at any given time.....present a substantially greater propensity to: high-tone falsing. More specifically: the DIFFERING angle/orientation of the nails (unto each other)..... of which: generate a much greater broadband conductivity error.....for falsing to generate.
In your provided photo...... it is difficult to tell if there are areas where the nails are far enough apart...... to possibly allow the enveloped donut EM footprint (from a smaller coil)...... to possibly circumnavigate around the faraday-cage (carpet of nails).
Yes..... indeed.....,,,,,,......this is in a 2D plane ....(((yet, the non-ferrous targets will be inserted/injected in a 3D (greater depth) foray))).
Re: "UNDER THE IRON CARPET"
Posted: Tue May 19, 2026 3:31 am
by JCR
A very innovative set up El Nino. Please let us know about your various test results,
Re: "UNDER THE IRON CARPET"
Posted: Tue May 19, 2026 6:26 pm
by Keith Southern
El Nino
I for one appreciate your Tenacity in your quest for unmasking.
Experimenting even to advanced levels of the (really Nice) nail blanket you have constructed is indeed a true passion quest.
I await your finding's!
One thing I may add to ANYONE experimenting is SWEEP SPEED for settings used on any particular machine changes outcomes dramatically.That may be higher freq REQUIRES a different sweep VS a lower or Multi freq setting or vice versa.Find the sweet SWEEP for unmasking .I see it alot with people doing depth comparison too one machine VS another style .They say see this machine isn't as deep as this machine here.when in reality one may be accepting the sweep speed one may be hindered by the same sweep speed.These newer machine with single freq select can also require different sweep speeds from one freq jump to another to keep playing field level when just trying to do a target check from one freq to another one real world hunt.Also newer units with speed settings, fast setting doesn't necessarily mean sweep fast.
Coils also change outcome dramatically and is one reason a lot of machine's get dismissed early on as subpar depth and or unmasking.When a simple coil swap can move a machine from subpar to par to even above par!
Keep the info flowing!!
Keith
Re: "UNDER THE IRON CARPET"
Posted: Wed May 20, 2026 9:14 pm
by EL NINO
JCR wrote: ↑Tue May 19, 2026 3:31 am
A very innovative set up El Nino. Please let us know about your various test results,
JCR I'll finish the test by the end of the week and start testing...I'll definitely upload some videos from the testing.
Re: "UNDER THE IRON CARPET"
Posted: Wed May 20, 2026 9:29 pm
by EL NINO
Keith Southern wrote: ↑Tue May 19, 2026 6:26 pm
El Nino
I for one appreciate your Tenacity in your quest for unmasking.
Experimenting even to advanced levels of the (really Nice) nail blanket you have constructed is indeed a true passion quest.
I await your finding's!
One thing I may add to ANYONE experimenting is SWEEP SPEED for settings used on any particular machine changes outcomes dramatically.That may be higher freq REQUIRES a different sweep VS a lower or Multi freq setting or vice versa.Find the sweet SWEEP for unmasking .I see it alot with people doing depth comparison too one machine VS another style .They say see this machine isn't as deep as this machine here.when in reality one may be accepting the sweep speed one may be hindered by the same sweep speed.These newer machine with single freq select can also require different sweep speeds from one freq jump to another to keep playing field level when just trying to do a target check from one freq to another one real world hunt.Also newer units with speed settings, fast setting doesn't necessarily mean sweep fast.
Coils also change outcome dramatically and is one reason a lot of machine's get dismissed early on as subpar depth and or unmasking.When a simple coil swap can move a machine from subpar to par to even above par!
Keep the info flowing!!
Keith
Keith... yes... and by testing detectors in separation .. we can find the right coil sweep speed for the best separation for a given detector under test...
Regarding coils... just changing the coil size on a given detector... allows you to achieve better depth detection properties ...or possibly greatly improve the separation properties of the detector for a given type of separation,,, there is no doubt about that...
My 3D separation field... with 35 targets between the iron is an example of how many targets can only be captured with extra slow coil sweeps.... but some targets are detected in normal coil sweeps... or perhaps .. with faster coil sweeps..
Furthermore.. I like to combine multi-frequency detection with single frequency detection / mostly high frequency / to be able to unmask other targets.. and it brings positive results..