ALEXANDRE TARTAR

11 minutes ago, vive equinox said:

in the end what is the interest of the mute and tone modes? they seem almost anecdotal or even secondary since one might think that it is not really beginners who will use this detector.

It's true, but in some very polluted areas it makes it easier to sort and detect gold under the iron.

I did an experiment several years ago in TONE mode in an extremely polluted place on 600 holes I detected 30% of non-ferrous target below ferrous target.

Impossible to make that in ALL METAL mode

I confirm that MUTE mode is less interesting for the expert. (Only if you want to cut a light magnetic ground without using the VOLCANIC SAND MODE)

7 minutes ago, Steve Herschbach said:

So if I adjust a TDI so the ground balance is mid-range, we have a hole. But if I adjust it to either extreme, I’m just rejecting the top end or the low end. It no longer a hole, but a cut off! 

Semantics, my friends, semantics.

I’m amazed you guys put up with me. I drive my wife crazy at times, now you know why! 

With a TDI no matter how you adjust your ground balance you will have a hole in the conductivity scale, and therefore some gold targets will be invisible. Or you will lose 50% of sensitivity on heavy gold ring

With AQ It's not the case !

3 minutes ago, mn90403 said:

I will have to look at it more closely but I find some gold rings in my coin 'ranges' so those will be unseen/unheard by default?  Would there be an 'option' to hear or see those targets?

If I were to compare this to my 800 is the detect range from about 3 to 17 and everything else rejected?

The range of VDI with your 800 is not the same moreover it is too tight to be valid.

If you take an ingot of one kilo it will be in the upper part so it will be rejected in MUTE, detected in TONE MODE with a low tone.

These detection modes are really made for beginners, because the expert detects in ALL METAL mode and 99% of ferrous metals are easily identified with a double beep.

3 minutes ago, vive equinox said:

So this means that we lose all 3-4 gram rings in 18k?!? it's annoying 🤔

No it is an error in the table, you can not have 3grs of 18k gold at 63! It's 33...

To reach a VDI of 63 you need more than 35 grams of 18k gold

4 minutes ago, vive equinox said:

I don't know if I understood correctly, according to the table we lose the item number 16 with the AQ, it’s a common gold ring that we dont want loose it, did i misunderstand or can you explain ? 

It's a mistake the VDI cannot be at 63 for 3grs 18k, it's maybe 33 ... I verify...

I wrote this on paper and then I copied it into excel, I could make typing errors

14 minutes ago, mn90403 said:

If this is the case then this is not a 'hole' per se as much as it is a total elimination of a range of upper targets.  It would be just a reject of the top end.

Yes that's what Carl explained ! 😉

And since all gold jewelry is not located in the upper part, there is no hole in the conductivity of gold jewelry.

If you take an ingot of one kilo it will be in the upper part so it will be rejected in MUTE, detected in TONE MODE with a low tone.

These detection modes are really made for beginners, because the expert detects in ALL METAL mode and 99% of ferrous metals are easily identified with a double beep.

I repeat :
Let us take an example, on the conductivity scale of a White's Spectrum XLT, the non-ferrous going from 0 to +94 and the ferrous 0 to -95.
The IMPULSE AQ detects all targets with a VDI ranging from 0 to 58 as being valid targets.
And the IMPULSE AQ will minimize the loss of depth on the highest VDIs. (almost 55)

It will therefore detect between 59 and  94 the targets as invalid

If your coin is at 75 it will not detect it.

An 18K gold signet ring of 20grs is only 45 therefore detected !

Can be that a signet ring of 45 grs 18k will have a VDI of 70 (I don't know I have never seen one) then it will not be detected in MUTE mode and it will make a low tone in TONE mode. (But there will not be the double beep which shows more than 95% the presence of a ferrous)

Hello,

Regarding a metal detector model for finding gold nuggets, I would not comment today.

Regarding the IMPULSE AQ, there is no problem in the conductivity scale of the low conductors.

Let us take an example, on the conductivity scale of a White XLT Spectrum, the non-ferrous going from 0 to +94 and the ferrous 0 to -95.
The AQ pulse detects all targets with a VDI ranging from 0 to 58 as being valid targets.
And the IMPULSE AQ will minimize the loss of depth on the highest VDIs. (almost 55)

VIDEO HERE (Sorry for the rude English)

Battery and cables will fully disappear...

Yes that's correct, I have several production models and I allow certain Youtubers to meet us and make videos ...
I don't have much time but I try to do it more and more.

It makes me happy to chat with prospectors.

I gain knowledge about what they like and how they see their material and the passion in general.

I think the next videos are coming next week on several Youtube channel

The sealing depth will be greater on the series worldwide version...

42 minutes ago, dewcon4414 said:

Maybe I missed it... I miss a lot.   But Will a battery mode void the 2 year warranty?  Maybe Fisher Rep can/should answer this.  They took a good deal of time writing the “disclosure” we agreed to.   Or are we talking hypothetical here lol?

You plug what you want on your detector, here you take the risk. But with this method you do not damage the mechanics, you do not transform anything.

3 hours ago, danielbecerra said:

Alexandre, but only up to 1 meter ??? Will it be possible as Steve mentioned to do it up to 3 meters?

1 meter is the cable length...

You are fast, I only unlocked it for 1 hour !! 

Yes it is because it is I who created it. 
I just put the mode "coming soon"
It is under construction...

OTHER DEVELOPPEMENT AROUND 100 USD, 7000 mAh true cells Samsung INR18650-35E :

Audio cable inline with headphone cable.

Tube thickness 5mm

I think I found even better and cheaper with charger! 5200mAh 14.4V nominal

https://www.batteryspace.com/waterbottleli-ion18650battery148v4800mah71wh42aratesmartfast15achargerforhalogenbikelighttrail-techfemaleplug.aspx

16 minutes ago, Steve Herschbach said:

This equates to around a 3.0 grain gold nugget, which for me is plenty small. There are many places in Nevada in particular where there are gold nuggets larger than this and where the ground is not very mineralized with magnetic minerals. There are however large areas where alkali salt really troubles some detectors, like the GPZ 7000 in particular. A detector tuned specifically to work on alkali/salt while still having sufficient sensitivity to small gold may work very well in some gold nugget locations, salt flats in particular. There may be areas where hot rocks prove problematic, but there will be areas I am sure where the Impulse AQ can find gold nuggets. I plan to be one of the first to find out. 

The photo below has 24 grams of Nevada gold I found with the GPZ 7000, with none of it exceptionally large or small, but all more than the 0.2 grams we are talking about as a cut off point for the Impulse AQ.

 

It's very interesting, I didn't know at all.
They keep repeating that for the USA and Africa, we have to find more small, 1 grain, 1/2 grain and 1/4 grain if possible.

While in the field I have a lot of prospecting friends who tell me the opposite, they want to look for big nuggets larger than 2 grs.

I will make a video soon, I detect in the wet sand, a gold ring 18k of 2grs at 25 cm below a bag of 10Kgrs of volcanic sand 325,000 x 10 ^ -6 SI + 1 Kgrs of 100% iron powder in bottle + a few iron nails.

https://www.amazon.fr/gp/product/B0755FW41R/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1

19 minutes ago, EL NINO77 said:

Excellent work ALEXANDRE ... I think ... that little pack of "Black Sand" from Fuerte Ventura has at least 70%-80% magnetite.

 

You are probably right because on the sand  -23.9 x 10-3 SI  we have 51% of magnétite

In the table above I don't see anything comparable to 325,000 x 10 ^ -6 SI...

And yet the impulse AQ easily detects through when we speak of jewelry greater than 0.3 grs

Nature does extraordinary things.....

This is an interesting subject that few people know how to deal with even at the metal detector companies.

Impulse AQ must pass over all types of magnetic soil, fe2o3 and fe3o4.

On the other hand it will not take small gold nuggets, it is not planned for that.

The impulse gold model will be provided for this research ...

Impulse AQ does not detect below 0.1 gr / 0.2 gr, however it cuts very very hard this type of ground.

Especially in volcanic mode.

http://www.zhinstruments.com/sm_30.htm

I have enough stones from all over the world to open a stone quarry.

I was able to volcanic sand 10 times more intense than the most difficult of my volcanic stones.

HERE 325 x 10^-3 SI No problem with AQ :

On 1/17/2020 at 10:38 PM, Steve Herschbach said:

That half sine patent has been discussed here as far back as six years ago and still no product in sight. Various prototypes have been developed at White’s over the ensuing years, but so far getting something to work well enough to bring to market has obviously not happened. I keep hoping for a surprise out of left field from White’s based on this patent that somehow turns the market upside down. White’s certainly needs a real winner at this point if they want to remain relevant. The truth is however many patents and great ideas just don’t work out in the real world. The Fisher CZX/Mosca was just one of many, and the Pulse Devil an even better example of a great idea that never happened. An ironic name in retrospect. The devil is, as they say, in the details. 

Bipolar technology does not look like this at all. Mine is much more effective.

Yes with three different mineralization levels and the fourth hole I want to inject seawater in a closed circuit.

I placed different layers of geotextile to avoid rising damp, but allow water infiltration and evacuation