northwest What do think?
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australian electronic gold prospecting forum.com  |  Pi metal detector by Bugwhiskers  |  QED Detector ,latest updates  |  Topic: What do think? 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: What do think?  (Read 3129 times)
Doug
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« Reply #20 on: Thursday May 10 2018 10:54:27 AEST AM »

  
  
  
I reckon Rick should come to my place (20 mins drive) and we will do the test again with me driving his QED. I will buy a GOPRO camera for the event. How about it Rick, are you in?

Perhaps you could also offer to repeat the test with the same nuggets, at the same location with you driving the QED with the appropriate coil?
doug smile

That would work also. Meanwhile.... we wait for his response.

You would not want to  repeat the test over your beggary hill patch because the  SAD7000 would only Gb over it in severe and the depth loss on Ricks nuggets would be horrendous with the SAD 7000. The QED will Gb just fine over your  test patch and it would not surprise me if the QED could match or beat it for depth in this scenario!
doug smile
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dasenator777
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« Reply #21 on: Thursday May 10 2018 11:03:03 AEST AM »

  
  
  
I reckon Rick should come to my place (20 mins drive) and we will do the test again with me driving his QED. I will buy a GOPRO camera for the event. How about it Rick, are you in?

Perhaps you could also offer to repeat the test with the same nuggets, at the same location with you driving the QED with the appropriate coil?
doug smile
hes been quiet so far today

That would work also. Meanwhile.... we wait for his response.
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dasenator777
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« Reply #22 on: Thursday May 10 2018 11:39:40 AEST AM »

hopefuly nenad will take up my offer to go out mt crawford to film and test, i wont be using no 17x11 thats for sure lol, we wait n see  excited
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GARY
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« Reply #23 on: Thursday May 10 2018 12:39:23 AEST PM »

Years ago I used to test different coils on nuggets in the ground using a hole drilled at 45 degrees into ground on the goldfield as shown in a photo I took back then.

Therefore you can raise or lower nuggets to different depths using the Rod attached to the nugget.

Also my diagram shows an easy way to measure the depth of the Nugget below the undisturbed ground.


* In ground Testing.jpg (64.34 KB, 789x474 - viewed 207 times.)

* DD coils at Test site 079 (Medium).JPG (425.07 KB, 1024x768 - viewed 213 times.)
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mylab
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« Reply #24 on: Thursday May 10 2018 18:16:40 AEST PM »

  
  
I reckon Rick should come to my place (20 mins drive) and we will do the test again with me driving his QED. I will buy a GOPRO camera for the event. How about it Rick, are you in?

Perhaps you could also offer to repeat the test with the same nuggets, at the same location with you driving the QED with the appropriate coil?
doug smile

Well from what Rick has now said on the 1.5gram forum he has taken up the offer to meet BW at the same test site and test over the same nuggets and if BW can do significantly better with the 17x11 coil then he will publicly apologise to BW.
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Doug
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« Reply #25 on: Thursday May 10 2018 19:13:59 AEST PM »

  
  
  
I reckon Rick should come to my place (20 mins drive) and we will do the test again with me driving his QED. I will buy a GOPRO camera for the event. How about it Rick, are you in?

Perhaps you could also offer to repeat the test with the same nuggets, at the same location with you driving the QED with the appropriate coil?
doug smile

Well from what Rick has now said on the 1.5gram forum he has taken up the offer to meet BW at the same test site and test over the same nuggets and if BW can do significantly better with the 17x11 coil then he will publicly apologise to BW.

If this proceeds a comparison should be done with a coil  on the QED that has a similar sized TX to the TX on the zed DOD,an 8 or 11 inch mono on the QED would be pretty close.I am surprised that a gun detector operator can't understand why his gold ball test target respond so well with the QED but his  buried nuggets much  less so.
doug smile
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GARY
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« Reply #26 on: Thursday May 10 2018 19:30:02 AEST PM »

  

I am surprised that a gun detector operator can't understand why his gold ball test target respond so well with the QED but his  buried nuggets much  less so.

doug smile

Let me hazard a guess me being a non-gun detector operator as the 0.3g test ball was an air test and not buried in the ground as the others were?

Gary.
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dasenator777
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« Reply #27 on: Thursday May 10 2018 20:13:30 AEST PM »

  
Years ago I used to test different coils on nuggets in the ground using a hole drilled at 45 degrees into ground on the goldfield as shown in a photo I took back then.

Therefore you can raise or lower nuggets to different depths using the Rod attached to the nugget.

Also my diagram shows an easy way to measure the depth of the Nugget below the undisturbed ground.
not a bad system, that should be fool proof  happy face
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dasenator777
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« Reply #28 on: Thursday May 10 2018 20:15:39 AEST PM »

  
  
  
  
I reckon Rick should come to my place (20 mins drive) and we will do the test again with me driving his QED. I will buy a GOPRO camera for the event. How about it Rick, are you in?

Perhaps you could also offer to repeat the test with the same nuggets, at the same location with you driving the QED with the appropriate coil?
doug smile
amazing what a bit of pressure on all the forums this morning, snapped him out of it, i realy hope he sticks to his word and does test with bugs.... excited

Well from what Rick has now said on the 1.5gram forum he has taken up the offer to meet BW at the same test site and test over the same nuggets and if BW can do significantly better with the 17x11 coil then he will publicly apologise to BW.

If this proceeds a comparison should be done with a coil  on the QED that has a similar sized TX to the TX on the zed DOD,an 8 or 11 inch mono on the QED would be pretty close.I am surprised that a gun detector operator can't understand why his gold ball test target respond so well with the QED but his  buried nuggets much  less so.
doug smile
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Prospector B
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« Reply #29 on: Thursday May 10 2018 20:16:41 AEST PM »

Yeah I'm not a gun with a detector either, my guess is different metal. I can't remember if the vid said it was gold...
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dasenator777
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« Reply #30 on: Thursday May 10 2018 20:22:37 AEST PM »

  
Yeah I'm not a gun with a detector either, my guess is different metal. I can't remember if the vid said it was gold...
i think he said it was from memory, if we were gun operators we would all be rich i guess lol  happy face
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« Reply #31 on: Thursday May 10 2018 20:26:37 AEST PM »

Ain't that the truth!  happy face
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gef12
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« Reply #32 on: Thursday May 10 2018 20:34:25 AEST PM »

Anyone else think the coil comparisons were not true .. 
For that test I would have used a smaller coil on the QED to equal that of the ZED ... IMHO
Remember the Zed is using 2 D configurations which would equal in x sectional area of a smaller say 14 x 9 .. so is not a similar size coil .. maybe physicaly it is but not electonicaly .. IMHO
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Maybe 2013 is the Year of the Nugget ... EFFEN hope so :-)
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« Reply #33 on: Thursday May 10 2018 20:38:50 AEST PM »

Thanking about why the smallest target on the ground was picked up better than the larger targets must have something to do with where the bias and maybe volume is set. Could Rick have biases it down enough to ignore the two smaller buried targets and was picking up the largest one because it just large? Could a few targets be in the null zone?
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mylab
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« Reply #34 on: Thursday May 10 2018 20:45:08 AEST PM »

  
Anyone else think the coil comparisons were not true ..  
For that test I would have used a smaller coil on the QED to equal that of the ZED ... IMHO
Remember the Zed is using 2 D configurations which would equal in x sectional area of a smaller say 14 x 9 .. so is not a similar size coil .. maybe physicaly it is but not electonicaly .. IMHO

I see Reg W says in his reply to Rick after he agreed to BW 's offer for another test that the QED should be fitted with the Detech 11" round flat wound mono that is sold with the QED as is the 14" DOD with the GPZ.
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dasenator777
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« Reply #35 on: Thursday May 10 2018 22:57:10 AEST PM »

  
Anyone else think the coil comparisons were not true .. 
For that test I would have used a smaller coil on the QED to equal that of the ZED ... IMHO
Remember the Zed is using 2 D configurations which would equal in x sectional area of a smaller say 14 x 9 .. so is not a similar size coil .. maybe physicaly it is but not electonicaly .. IMHO
im with ya 110%
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WM6
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« Reply #36 on: Friday May 11 2018 04:40:25 AEST AM »

  
  
Years ago I used to test different coils on nuggets in the ground using a hole drilled at 45 degrees into ground on the goldfield as shown in a photo I took back then.

Therefore you can raise or lower nuggets to different depths using the Rod attached to the nugget.

Also my diagram shows an easy way to measure the depth of the Nugget below the undisturbed ground.

not a bad system, that should be fool proof  happy face

It could be problem especially with small targets in such tests.

Namely very important influential factor, contact between soil and nuggets is missing.

Soil mimic ferrite material (depend on % of Fe3O4) and magnetic field lines tend to go
through soil around drilled hole and not trough air in hole and this way reduce sensitivity.

Or by drawing:



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bugwhiskers
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« Reply #37 on: Friday May 11 2018 06:31:03 AEST AM »

I am very happy for the opportunity to put the record straight. It will have to wait a few days as the weather is shocking ATM. I will use the Detech 11" spiral wound as supplied in the standard package. Now to go and buy a GOPRO camera to capture it all. Both Rick and J Porter have avoided using large targets in any test videos or written reports. Methinx it's time to find out why.
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GARY
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« Reply #38 on: Friday May 11 2018 09:18:17 AEST AM »

  

It could be problem especially with small targets in such tests.

Namely very important influential factor, contact between soil and nuggets is missing.

Soil mimic ferrite material (depend on % of Fe3O4) and magnetic field lines tend to go through soil around drilled hole and not trough air in hole and this way reduce sensitivity.



WM6 I do understand that placing nuggets inside holes in the ground for in-ground test purposes is not how we detect nuggets in the real world.

However if we are to perform this type of testing then to understand what you are saying in your last sentence, and if I am correct, I have placed nuggets inside the holes in your diagram?

Apart from the problem that you have highlighted then whatever Detectors or Coils being tested under such circumstances the situation is the same for the items being tested and for a comparison, well that is the way I see it.


* Testing Nuggets in Holes.jpg (108.29 KB, 917x603 - viewed 102 times.)
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gef12
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« Reply #39 on: Friday May 11 2018 13:35:31 AEST PM »

I can understand where WM6 is coming from .. it brings to mind the so called hallow effect .. nuggets within soil which contains iron and other minerals sulfides and salts in contact with nugget would IMHO generate a type of hallow effect around said nugget especially if in damp ground. I would even suggest you could even measure it with an ohm meter
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australian electronic gold prospecting forum.com  |  Pi metal detector by Bugwhiskers  |  QED Detector ,latest updates  |  Topic: What do think? « previous next »
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