Equinox 600 MultiIQ frequencies?

[Motor7]

Thanks guys and, OP....sorry for the sidetrack. Off to read the eBook!

 

[CoinHunter2]

Verbatim from the Manuel: 20 kHz and 40 kHz are not available as single operating frequencies in EQUINOX 600. The Multi-IQ frequency range shown applies to both EQUINOX 600 and 800. Meaning that all 5 freq. are used in Multi-IQ

 

[Willee - Texas]

Interesting, I did not know that silver was a better conductor than gold.....good stuff...thanks. So, based on this info, how high and how low will the frequency's end up in our future MD's? Is there a limit?

It sure sounds to me that having the ability to "single mode" a multiple range of frequencies is a good thing, but at the same time more work for the user?

Don't confuse the ability of a metal to transmit electrons (the traditional conductivity we we think about) with a metals inductance (which is what we refer to as a high or low conductor). Gold is a better conductor, but it can't hold an electrical charge as long as silver, so we call it a low conductor.

Everything in this game is a trade off. Higher freqs work better with lower "conductors", but high freqs can't move through a soil matrix very well. On the other hand the low freqs can get much deeper reach, but we are currently at about the max depths possible and we've been there for a few decades.

The real futures looks to be with discriminating pulse induction, but its not perfected yet.

We call gold a low conductor because of the RESISTANCE to flow. Gold is NOT a better conductor than silver as it has more resistance to flow than silver.
So much misinformation on the internet.

 

[ohiochris]

The 600 uses all the frequencies in multi , but not the same way in each mode. Minelab describes them being " weighted " differently for each one. I didnt fully understand what that meant until somewhat recently and to some extent it is a little bit of a mystery as to what exactly is going on with each. Apparently , the different modes rely more heavily on certain frequencies being used depending on what mode you are in. Which in my mind , that means one or more of those frequencies isnt doing what you think its doing , they are probably just helping cancel out the ground. So while its using all of them in multi , you may not get the full benefit of all of them since its primarily using certain ones. Thats one of the reasons each mode works like a separate unique detector.

Now if they could only combine the best features of all modes and combine them into one and rely equally on all frequencies , or would that be impossible ? But the technical stuff is a little over my head. Maybe this is how they have overcome the problems they had with multi frequency in the past.

 

[ohiochris]

Interesting, I did not know that silver was a better conductor than gold.....good stuff...thanks. So, based on this info, how high and how low will the frequency's end up in our future MD's? Is there a limit?

It sure sounds to me that having the ability to "single mode" a multiple range of frequencies is a good thing, but at the same time more work for the user?

Don't confuse the ability of a metal to transmit electrons (the traditional conductivity we we think about) with a metals inductance (which is what we refer to as a high or low conductor). Gold is a better conductor, but it can't hold an electrical charge as long as silver, so we call it a low conductor.

Everything in this game is a trade off. Higher freqs work better with lower "conductors", but high freqs can't move through a soil matrix very well. On the other hand the low freqs can get much deeper reach, but we are currently at about the max depths possible and we've been there for a few decades.

The real futures looks to be with discriminating pulse induction, but its not perfected yet.

Silver is not only a better conductor than gold but its probably the best conductor there is. No matter how you explain it , gold has much more resistence to the flow of electricity than silver. But silver is more rigid and does tarnish , making it not the best in some electronics applications. Gold is a good conductor , but its use ....as a conductor....usually has more to do with its resistence to corrosion than its conductive properties. How long the metal can " hold an electrical charge " really has nothing to do with it for purposes related to metal detecting. Gold is a better conductor than lead , but not as good as copper and silver,....so its on the low end of the chart.

 

[Jason in Enid]

. How long the metal can " hold an electrical charge " really has nothing to do with it for purposes related to metal detecting. .

WOW

You need to spend some time reading on how metal detectors operate.

 

[ohiochris]

. How long the metal can " hold an electrical charge " really has nothing to do with it for purposes related to metal detecting. .

WOW

You need to spend some time reading on how metal detectors operate.

You mean like this ???

When the current flows in a given direction, a magnetic field is produced whose polarity points into the ground; when the current flow is reversed, the field's polarity points out of the ground. Any metallic object which happens to be nearby will have a flow of current induced inside of it by the influence of the changing magnetic field, in much the same way that an electric generator produces electricity by moving a coil of wire inside a fixed magnetic field. This current flow inside a metal object in turn produces its own magnetic field, with a polarity that tends to be pointed opposite to the transmit field..........

A second coil of wire inside the loop, the receive coil, is arranged so that nearly all of the current that would ordinarily flow in it due to the influence of the transmitted field is cancelled out. Therefore, the field produced by the currents flowing in the nearby metal object will cause currents to flow in the receive coil which may be amplified and processed by the metal detector's electronics without being swamped by currents resulting from the much stronger transmitted field........

.....................its about current flow and resistance. The electro magnetic field.....

 

[Jason in Enid]

Nope! study harder!

Here's a hint... decay rate

 

[ohiochris]

Nope! study harder!

Here's a hint... decay rate

We are definitely talking apples and oranges here my friend.

As it applies to the generation of an electrical field and the detection of that field , the flow or resistance of electric current plays the major role.

But I will let you have this one since my point is pretty much common knowledge and there is no need for me to be seen as right. Just discussing our thoughts on the subject.

Decay rates then...who knew a detector could measure those ? Interesting...

 

[Jason in Enid]

Nope, same language. The difference is that you have a 1960s understanding of metal detector function. Minelab FBS and now M-IQ uses digital signal transmissions with square wave pulses of varying frequencies and durations along with varying sample rates to take advantage of the varying rates of signal decay from the varying targets. Combining that with multi-channel signal correlation is how we get what we get.

The days of static signal shift for target detection is ancient technology.

 

[ohiochris]

Nope, same language. The difference is that you have a 1960s understanding of metal detector function. Minelab FBS and now M-IQ uses digital signal transmissions with square wave pulses of varying frequencies and durations along with varying sample rates to take advantage of the varying rates of signal decay from the varying targets. Combining that with multi-channel signal correlation is how we get what we get.

The days of static signal shift for target detection is ancient technology.

So it does all that and still registers as a lower conductor by the detector and silver still rules ? The technology is so advanced that it actually reads gold as the highest conductor , only to process it and interpret it as one of the lowest ?

Glad they invented the technology to step over a dollar to pick up a dime. Long story short.....regardless of whats going on under the hood , the detector winds up putting gold in the same place on the scale it would be if we were talking electrical conductivity anyway. Just apparently it took a longer route to get there.

That's because you are talking signal decay which has an effect on every metal detector to some extent. Signal decay affects target ID. The new technology measures and processes signal decay differently....rather , what parts of that signal is returned. Signal decay is caused by absorbtion and in ground scattering , which the newer technology handles better due to processing , which is where the multi-channel signal correlation comes in. In a nutshell , ...signal transmissions less prone to be absorbed or scattered , and a smarter processor to interpret the returns. I'm not " detecting " a higher conductivity in gold here.....pun intended.

All said and done , gold still sits in the detector scale right where electrical conductivity would put it , so rub me down with bacon grease and call me smokey ... LOL

 

[CoinHunter2]

The equinox 600 uses 5 frequency's. It just can't use 20 kHz and 40 kHz individually. On page 29 of the manual under the picture of 5 frequency, it says this, in multi-IQ the equinox 600 uses all 5 Frequency's, but can use 20 and 40 desperately..

 

[metalpopper]

Forgive me(new guy), trying to understand all the capabilities. What would you be targeting if you were running 20 and 40khz in single mode....gold? If so, when running in single mode it basically cuts down the "hits" from other metals? And in multi it hits strong on everything?


From a "general" metal detector perspective.....any frequency will respond to any metal

I think Digger meant to say, "Any metal will respond to any frequency".....

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To add to Diggers correct generalisation; THE TARGET's THICKNESS is just as significant as its CONDUCTIVITY....very important.


THICK coins...lower frequencies.....i.e. 1.8 mm>>> 3 mm....copper/silver.


THIN coins....higher frequencies.....I.e. 0.5 mm >>> 1.0 mm.....copper/silver.



So, to generalise; The appropriate frequency-for-target, is a [size=x-large]complex formulation of dimensions AND conductivity[/size].....Matt

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(continuing Digger's quote)

Some just do it better than others! Higher frequencies provide a more solid response to lower conductive targets. And lower frequencies provide a more solid response to higher conductive targets. From a coin/jewelry/gold hunter's perspective, silver would be considered a high conductor and would respond best to a lower frequency. Whereas gold would be a lower conductive target and responds better to a higher frequency. Multiple frequency implements all of them at once and should maximize your ability to "hear the hit" on all accepted targets. JMHO HH Randy