northwest QED tips
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australian electronic gold prospecting forum.com  |  QED users  |  QED users (Moderator: bugwhiskers)  |  Topic: QED tips kiwigeo7 and 1 Guest are viewing this topic. « previous next »
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Author Topic: QED tips  (Read 2614 times)
Goldman
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« on: Thursday February 7 2019 16:13:41 AEDT PM »

I’ve started this thread to uncover everyone’s hard won tips.

I will start with a few:

1) AGB: have THS-B at null to use the AGB, IF biased either below or above null, the AGB will not be anywhere near as effective

2) in very mild to mild ground, for falling pitch (large) targets use the lowest GB number where the QED is still in GB. This will enhance detection distance for falling pitch targets.

3) for headphone use only, to avoid having a noisy threshold noise in your ear all day, use low THS-A, THS-B at NULL, Gain as high as possible, appropriate Mode. When the QED  detects a target, internally the pitch change happens (well) before the volume change, so carefully listen for pitch change (rising or falling) not just volume change.


Cheers Goldman
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Goldman
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« Reply #1 on: Friday February 8 2019 08:41:14 AEDT AM »

THS-A and THS-B relationship

With THS-A set to near max or at max (90), then the useable THS-B band has decreased to perhaps 1 (no more than 2, and it would be noisy) either side of null.  Conversely, with low THS-A, then the useable THS-B is around 5-6/7 either side of null.
This is how the QED can be set up right on the edge of max performance, either looking for small stuff (biased very low) or looking for bigger stuff (high bias), or at neutral using THS-A (high) looking for any targets. The A in THS-A means ‘all targets’. Once the above is understood (with the appropriate Mode, and Gain), then you are well on your way to utilising the full potential of the QED.

BTW, near max (or max) THS-A, is another way of finding the THS-B null point, as the least noisy THS-B point is null.
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Goldman
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« Reply #2 on: Wednesday February 13 2019 18:41:31 AEDT PM »

Ground Balance:
in very mild to mild ground, for rising pitch (small) targets use the highest GB number where the QED is still in GB.
This will enhance detection distance for rising pitch targets.
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GARY
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« Reply #3 on: Thursday February 14 2019 11:06:16 AEDT AM »

Thanks Goldman for your Tips.

I have attached a pic below of some Ground Balance readings I observed over mineralised ground with a Commander 8" mono on the QED.

Gary.
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Goldman
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« Reply #4 on: Thursday February 14 2019 12:35:41 AEDT PM »

  
Thanks Goldman for your Tips.

I have attached a pic below of some Ground Balance readings I observed over mineralised ground with a Commander 8" mono on the QED.

Gary.

Hi Gary,
Did you find that you had any leeway with the GB (ie. GB ok 1 or 2 either side of the numbers quoted). In WA last year I had to be absolutely spot on with no leeway at all.
In some ground here in the GT, you can achieve proper GB between say 96 - 130 and anywhere in that range is OK, whereas other areas (ie. Maryborough), the GB needs to be spot on. The ‘on the fly’ GB method is good in those circumstances as it does not slow you down too much
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GARY
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« Reply #5 on: Thursday February 14 2019 15:48:27 AEDT PM »

  
Hi Gary,
Did you find that you had any leeway with the GB (ie. GB ok 1 or 2 either side of the numbers quoted).


Actually Goldman the leeway in GB that you mention is something that I have not taken note of.

Interesting if that SOME or NO leeway provides additional info on how mineralised the ground is, as well as the GB figures.

Therefore from your GB figures for some ground in the GT being between 96 - 130 then I assume the ground at Maryborough that needs the GB to be spot with NO leeway mean a even higher GB figure is the result?  

Gary.

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Goldman
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« Reply #6 on: Thursday February 14 2019 16:37:55 AEDT PM »

  
  
Hi Gary,
Did you find that you had any leeway with the GB (ie. GB ok 1 or 2 either side of the numbers quoted).


Actually Goldman the leeway in GB that you mention is something that I have not taken note of.

Interesting if that SOME or NO leeway provides additional info on how mineralised the ground is, as well as the GB figures.



Therefore from your GB figures for some ground in the GT being between 96 - 130 then I assume the ground at Maryborough that needs the GB to be spot with NO leeway mean a even higher GB figure is the result?  

Gary.




Hi Gary,
Interestingly the GB around Maryborough (with my QED) is around 120 - 126, but with little or no leeway, and the ground is very mineralised. The area where there is significant leeway, south of Ballarat is nowhere near as mineralised. So yes, the leeway does indicate the level of mineralisation. Gold is still found in these lesser mineralised areas though. For example the quartz at Maryborough is very fractured and stained with iron and the ground is typically red but in the ‘south’ areas the quartz is more shiney/bright and the ground is nowhere as red.
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Goldman
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« Reply #7 on: Thursday February 14 2019 16:43:36 AEDT PM »

  
  
  
Hi Gary,
Did you find that you had any leeway with the GB (ie. GB ok 1 or 2 either side of the numbers quoted).


Actually Goldman the leeway in GB that you mention is something that I have not taken note of.

Interesting if that SOME or NO leeway provides additional info on how mineralised the ground is, as well as the GB figures.



Therefore from your GB figures for some ground in the GT being between 96 - 130 then I assume the ground at Maryborough that needs the GB to be spot with NO leeway mean a even higher GB figure is the result?  

Gary.




Hi Gary,
Interestingly the GB around Maryborough (with my QED) is around 120 - 126, but with little or no leeway, and the ground is very mineralised. The area where there is significant leeway, south of Ballarat is nowhere near as mineralised. So yes, the leeway does indicate the level of mineralisation. Gold is still found in these lesser mineralised areas though. For example the quartz at Maryborough is very fractured and stained with iron and the ground is typically red but in the ‘south’ areas the quartz is more shiney/bright and the ground is nowhere as red.


I should add that when in WA last year as soon as the QED got noisy I found that adjusting MGB up or down just 1 click fixed the problem, so it was telling me to MGB.
Cheers Goldman
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GARY
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« Reply #8 on: Thursday February 14 2019 21:36:28 AEDT PM »

Again in regards to the GB leeway would a higher MODE setting have an effect on the amount of GB leeway or a lower MODE more so.

Maybe have to test for GB leeway when out in the field next.

Gary.
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« Reply #9 on: Friday February 15 2019 09:08:05 AEDT AM »

  
Again in regards to the GB leeway would a higher MODE setting have an effect on the amount of GB leeway or a lower MODE more so.

Maybe have to test for GB leeway when out in the field next.

Gary.

Gary, that’s something I haven’t tested. When last in mild ground I was using mode 3, but didn’t change modes. I’ll try it when next in that general area.
Cheers Goldman
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pedro
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« Reply #10 on: Friday February 15 2019 12:15:17 AEDT PM »

Thanks Goldman & Gary for sharing your tips.
Much appreciated.
Cheers
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Goldman
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« Reply #11 on: Monday February 18 2019 14:51:11 AEDT PM »

  
Thanks Goldman for your Tips.

I have attached a pic below of some Ground Balance readings I observed over mineralised ground with a Commander 8" mono on the QED.

Gary.


After changing the Mode always perform a GB.
The table that Gary attached shows quite clearly how much the GB changed from mode 1 through to mode 5.

BTW, the GB number is just a number for your reference, there is no mineralised ground scale like the Richter scale for earth quakes
Cheers Goldman
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GARY
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« Reply #12 on: Monday February 18 2019 17:34:51 AEDT PM »

I have attached two further Ground Balance table readings I recorded over more mineralised ground this time with a Commander 11" mono and 12” NF Evo mono on the QED.

I was surprised that the 11” Commander required a higher GB’d reading than the NF 12” Evo to achieve a Ground Balance over this particular mineralised ground.

I also performed some GB leeway tests by manually adjusting the GB either side of the GB’d Reading displayed in my results to see how far the GB can be shifted for the QED to remain Ground Balanced.  


QED with 12” Evo:

In MODE 1 unable to adjust above or below the GB’d Reading and remain in Ground Balance.
(Btw the 12” Evo was difficult to GB in MODE 1 on this particular ground and was unstable in this mode.)

In MODE 3 able to adjust 1 figure above or below the GB’d Reading and remain in Ground Balance.  

In MODE 15 also able to adjust 1 figures above or below the GB’d Reading and remain in Ground Balance.



QED with 11” Commander:

In MODE 1 unable to adjust above or below the GB’d Reading and remain in Ground Balance.

In MODE 3 able to adjust 1 figure above or below the GB’d Reading and remain in Ground Balance.

In MODE 15 able to adjust 2 figures above or below the GB’d Reading and remain in Ground Balance.


Gary.
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Goldman
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« Reply #13 on: Monday February 18 2019 20:39:12 AEDT PM »

I have found that I can use mode 1 with a 8” commander, both here in the GT and in some areas just north of Kalgoorlie. The 8” commander remains very stable in the GT in mode 1, however the lowest mode my 11” elite can sustain is mode 3.

In the lesser mineralised area south of Ballarat using mode 3 with the 11” elite, I found significant GB leeway, hence my tip regarding where to set the GB for the size targets you are after.
Cheers Goldman
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GARY
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« Reply #14 on: Monday February 18 2019 21:37:23 AEDT PM »

I am not sure other than what Goldman alerted too in regards to my GB tables in that they display how much the GB changes from one MODE to another.

Anyway just to add a further GB table this one of the QED with 8” Commander over the same (laterite) ground that I tested the 11” Commander and 12” Evo monos on including leeway results below as well..

QED with 8” Commander:

In MODE 1 able to adjust 2 figures above or below the GB’d Reading and remain in Ground Balance.

In MODE 3 able to adjust 3 figures above or below the GB’d Reading and remain in Ground Balance.

In MODE 15 able to adjust 3 figures above or below the GB’d Reading and remain in Ground Balance.


Hopefully some other QED users can add some tips as Goldman has as my contribution is not offering tips so to speak.

Gary.
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Golddiggerdave
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« Reply #15 on: Friday February 22 2019 16:21:38 AEDT PM »

Training Day For QED Users?
Now that would be something Not to miss!
I'd come along.
Not doing so well on my own.
                                                       

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bugwhiskers
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« Reply #16 on: Friday February 22 2019 17:54:24 AEDT PM »

  
Training Day For QED Users?
Now that would be something Not to miss!
I'd come along.
Not doing so well on my own.
                                                       



The problem with organised outings is the Public Liability. Invite people to some place in the bush and if something goes wrong the Lawyers start salivating. If you can come up with a way around this problem I am happy to conduct a field day.
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WM6
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« Reply #17 on: Friday February 22 2019 18:25:11 AEDT PM »

  

The problem with organised outings is the Public Liability. Invite people to some place in the bush and if something goes wrong the Lawyers start salivating. If you can come up with a way around this problem I am happy to conduct a field day.


Everyone should first sign their own responsibility, to whatever happen throug joining "QED Days".
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bugwhiskers
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« Reply #18 on: Friday February 22 2019 18:46:09 AEDT PM »



The
  
  

The problem with organised outings is the Public Liability. Invite people to some place in the bush and if something goes wrong the Lawyers start salivating. If you can come up with a way around this problem I am happy to conduct a field day.


Everyone should first sign their own responsibility, to whatever happen through joining "QED Days".

A basic tenet of law is "you cannot sign your rights away".
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WM6
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« Reply #19 on: Friday February 22 2019 20:16:48 AEDT PM »

  


The
  
  

The problem with organised outings is the Public Liability. Invite people to some place in the bush and if something goes wrong the Lawyers start salivating. If you can come up with a way around this problem I am happy to conduct a field day.


Everyone should first sign their own responsibility, to whatever happen through joining "QED Days".



A basic tenet of law is "you cannot sign your rights away".

Exactly, but it is about fundamental human rigts.

Rigts, like right to compensation, is multiple conditioned right, not something unconditionally guaranted.
Par example: With buying every tecnical device, you sign (silent) agreement by accepting tecnical manual.
By accepting instruction in manual you (silent) agree, that consequences of listed specific wrong use or
abuse of device is your resposibility. By buying such device you "silent" sign your right to compensation
away in advance.

There are ways to transfer resposibility to those that willingly attend some rally, by sign
that they are familiar by all explicite cited dangers (dangers should be specified, par example:
snake bite, heat stroke, pacemaker malfunction due MD signals, unknown illness implications,
inadvertent injuries and damages during the digging and transporting, allergic reaction to
served food, wrong individual  social encounter, get lost, any sort of unfulfilled expectations
and alike) and that they take all responsibilites from their attend.

For more peace of mind and security, we can always set some sort of insurance (costs can be
later distributed to participants if decided):

  
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