northwest QED - Best small coil for $
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Interfacion Pty Ltd is pleased to announce that the QED PI Detector has been modified to allow the use of DD (double D) coils. This change involves a simple change to the electronics within the control box.
The firmware has also been upgraded to include a further improved Ground Balance.
All detectors being delivered to new customers from Monday 5th August 2019 will already have the above upgrades included.
As a show of commitment to all QED owners, the hardware modification to allow use of the DD and CC coils will be provided at no cost.
Of course and as per the QED warranty, the firmware update is provided free of charge, except for P&H.
Any QED owner who plans to attend the Laanecoorie Bash is encouraged to bring their detector along and have it upgraded at no cost.
Standard postage and handling arrangements apply to other owners. Send via Australia Post the box (minus batteries) along with a pre-paid, pre-addressed bag/box to:
Interfacion Pty Ltd
PO Box 106R
Redan VIC 3350
Howard Rockey
Director Interfacion Pty Ltd.

australian electronic gold prospecting forum.com  |  QED users  |  QED users (Moderator: bugwhiskers)  |  Topic: QED - Best small coil for $ 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: QED - Best small coil for $  (Read 1346 times)
Reg Wilson
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« Reply #20 on: Wednesday February 6 2019 19:39:40 AEDT PM »

  
  
sd, have only used it once, and can't recall what settings I was using. Will give it a spin in the next day or so and let you know.
hey there reg been a while mate hope all is good your end, no more finders fights with inhere and coity lol. excited
Hi das, there were some good people on Finders , but some shocking rednecks and racists as well. At least here the posters are interested in detector development.
I actually have a bit of fun on Halfarse's forum, and although he is an uneducated and annoying little tool, and his forum is inundated with "fruitloops' there are some posters who are quite smart, and even Halfarse himself occasionally comes up with something interesting, although most of the time I just get the feeling that I would like to bash him.
PS Halfarse will no doubt monitor this post and probably post it on his forum.
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GARY
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« Reply #21 on: Wednesday February 6 2019 20:41:11 AEDT PM »

  
'
.........the 12" * 4" capsule shaped coil made by IBGold. It's quite outstanding when it comes to its light weight and performance. How about -------33" on a beer can without changing any settings.


As usual my addiction to testing and curiosity kicked in so set up the QED in the bedroom with it resting on the bed with the Commander 8" coil in the vertical position and my 3/4" diameter 36" long poly pipe measuring stick resting on the bed up against the bottom of the coil. With the QED set in FP settings I grabbed an empty 375ml XXXX GOLD aluminium beer can and waved it back and forth above my poly pipe measuring stick for a clear response out from the bottom of the coil at 20". I  ONLY then increased THS-A from its FP setting at 30 up to its maximum at 90 and received at clear response at 27". Goes to show how increasing THS-A does produce extra depth.

Gary.
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dasenator777
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« Reply #22 on: Wednesday February 6 2019 22:44:59 AEDT PM »

  
  

 mines too noisy over here in mode 1, but there are a few places ive been able too just use it in mode 1 though, mode 3 to 6 sometimes even 8, all depends how bad ground is. the hotter the ground the higher the mode is the way ive been using the qed. just sold my 4000 and purchased a second qed .... have the pl2 now and modded sd2000, and still change left over.  thumbs up!


Yep D777, what I have found where I detect.

Interesting you've got yourself a modified SD2000 which was my first PI.
I ended up getting it fully modified by Issy Jones in WA including his variable adjustable voltage regular enabling the detector to be fed with extra voltages....As well a VCO to adjust for additional frequencies..... Also additional GAIN adjustment for BALANCE 1 & BALANCE 11....And additional Ground Balance adjustment.

Mechanic who use to post here is the man who also knows the ins and outs of the SD2000.

Gary.

hey gazz this ones  a barry johnson modded 2000, i had one 20 yrs ago , all runs on 7.4 volts, need a deep ass unit for a specific job over autum  happy face
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dasenator777
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« Reply #23 on: Wednesday February 6 2019 22:51:44 AEDT PM »

  
  
  
sd, have only used it once, and can't recall what settings I was using. Will give it a spin in the next day or so and let you know.
hey there reg been a while mate hope all is good your end, no more finders fights with inhere and coity lol. excited
Hi das, there were some good people on Finders , but some shocking rednecks and racists as well. At least here the posters are interested in detector development.
I actually have a bit of fun on Halfarse's forum, and although he is an uneducated and annoying little tool, and his forum is inundated with "fruitloops' there are some posters who are quite smart, and even Halfarse himself occasionally comes up with something interesting, although most of the time I just get the feeling that I would like to bash him.
PS Halfarse will no doubt monitor this post and probably post it on his forum.
yep i hear ya reg re finders, old halfie loves posting about me as well, i reckon he even annoys himself half the time lol (post that halfwit i bet lol ). anyway buddy take care chat to ya soon  thumbs up!
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dasenator777
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« Reply #24 on: Wednesday February 6 2019 22:54:34 AEDT PM »

  
  
'
.........the 12" * 4" capsule shaped coil made by IBGold. It's quite outstanding when it comes to its light weight and performance. How about -------33" on a beer can without changing any settings.


As usual my addiction to testing and curiosity kicked in so set up the QED in the bedroom with it resting on the bed with the Commander 8" coil in the vertical position and my 3/4" diameter 36" long poly pipe measuring stick resting on the bed up against the bottom of the coil. With the QED set in FP settings I grabbed an empty 375ml XXXX GOLD aluminium beer can and waved it back and forth above my poly pipe measuring stick for a clear response out from the bottom of the coil at 20". I  ONLY then increased THS-A from its FP setting at 30 up to its maximum at 90 and received at clear response at 27". Goes to show how increasing THS-A does produce extra depth.

Gary.
totaly agree with your findings gazz i run mine 85 to 90 all the time too mate  smile
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GARY
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« Reply #25 on: Wednesday February 6 2019 23:22:29 AEDT PM »

Okay D777 as my 2000 had BJs 4 position frequency switch added first before I sent it to Issy for further mods.

Actually ran some tests comparing different frequencies from the lowest settings on the VCO down at 0.890 Mhz up to a high at 3.158 Mhz.

From those tests the strangest thing to me was when comparing the results on my three large test targets the Alum. Block, 15oz Lead and 1150 gram copper piece and that was the deepest result on all three of the targets was using the 3.1 Mhz frequency setting rather than a lower frequency such at 1.2 Mhz that is supposed to produce the best depth on larger targets and higher frequencies more so a smaller targets.

Sorry Goldman as I have diverted away from the topic of your thread.

Gary.

 
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GARY
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« Reply #26 on: Wednesday February 6 2019 23:25:01 AEDT PM »

  
totaly agree with your findings gazz i run mine 85 to 90 all the time too mate  smile


Yep me too.

Gary.
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Goldman
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« Reply #27 on: Thursday February 7 2019 08:19:47 AEDT AM »

With running THS-A up near maximum, and it’s noisy, do a MGB, but if still noisy, then check that you are running THS-B at NULL (or close to it) as the THS-B useable band at or near max THS-A is very small.

My dads (RIP) 2000 is for sale, as it’s just sitting in my brothers shed not being used. Dad got it when they first came out and did get a lot of gold with it around dunolly and surrounds in the day.

Cheers Goldman
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Goldman
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« Reply #28 on: Thursday February 7 2019 08:35:54 AEDT AM »

I have used my brothers 8” commander in WA and around dunolly/Maryborough and in most cases was able to use mode 1. Some areas in WA were just to hot and variable for mode 1, so just increased mode to achieve stability - can’t remember now which mode was best.

Compared it with a SDC at dunolly, by cross checking each other targets, and the QED easily ‘found’ all of the SDC targets and vice versa, sadly all the targets were lead.

So that’s why I am asking for your collective experience as I had heard that the 9” elite was pretty good. Reg, will be very interested in your post re your settings testing of the 9” in the near future.



Cheers Goldman
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dasenator777
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« Reply #29 on: Thursday February 7 2019 10:08:03 AEDT AM »

  
Okay D777 as my 2000 had BJs 4 position frequency switch added first before I sent it to Issy for further mods.

Actually ran some tests comparing different frequencies from the lowest settings on the VCO down at 0.890 Mhz up to a high at 3.158 Mhz.

From those tests the strangest thing to me was when comparing the results on my three large test targets the Alum. Block, 15oz Lead and 1150 gram copper piece and that was the deepest result on all three of the targets was using the 3.1 Mhz frequency setting rather than a lower frequency such at 1.2 Mhz that is supposed to produce the best depth on larger targets and higher frequencies more so a smaller targets.

Sorry Goldman as I have diverted away from the topic of your thread.

Gary.

 

looks like il have to do some testing now mate  happy face. the one i had years ago the rite frequency was perfect for smaller nuggs, it had the 4 potion switch.. found my first ever bit with it, this one has only got a 3 position switch, did you say yours had 4 positions.  happy face
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dasenator777
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« Reply #30 on: Thursday February 7 2019 10:10:00 AEDT AM »

  
With running THS-A up near maximum, and it’s noisy, do a MGB, but if still noisy, then check that you are running THS-B at NULL (or close to it) as the THS-B useable band at or near max THS-A is very small.

My dads (RIP) 2000 is for sale, as it’s just sitting in my brothers shed not being used. Dad got it when they first came out and did get a lot of gold with it around dunolly and surrounds in the day.

Cheers Goldman
GM i run mine smack in the middle null too  thumbs up! has the 2000 been modded at all would be good to get an early clean one, how much ya chasin  happy face p.s condolences on your fathers passing too GM drinking red wine
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egixe4
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« Reply #31 on: Thursday February 7 2019 10:13:53 AEDT AM »

  
  
8" Commander gets my vote  thumbs up!

Mal


Can you detect with your 8" commander in mode 1 most of the time?

Yes, most of the time I use mode 1

Mal
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dasenator777
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« Reply #32 on: Thursday February 7 2019 10:16:21 AEDT AM »

  
  
  
8" Commander gets my vote  thumbs up!

Mal


Can you detect with your 8" commander in mode 1 most of the time?

Yes, most of the time I use mode 1

Mal

probably only 3 spots i can use mode 1 over here mal, usualy mode 6 or 8. whats your ground like over there harsh or mild cheers  happy face
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egixe4
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« Reply #33 on: Thursday February 7 2019 11:22:39 AEDT AM »

Lots of different areas mate
From Dunolly in VIC to Western NSW and places in between.
I've not gone above mode 3 using the 8"
But mostly it's mode 1



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Doug
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« Reply #34 on: Thursday February 7 2019 13:18:27 AEDT PM »

  
With running THS-A up near maximum, and it’s noisy, do a MGB, but if still noisy, then check that you are running THS-B at NULL (or close to it) as the THS-B useable band at or near max THS-A is very small.

Cheers Goldman

So does this mean that if you are running THS-A near maximum then THS-B can only be run at the true null?
doug smile
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dasenator777
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« Reply #35 on: Thursday February 7 2019 14:16:09 AEDT PM »

  
  
With running THS-A up near maximum, and it’s noisy, do a MGB, but if still noisy, then check that you are running THS-B at NULL (or close to it) as the THS-B useable band at or near max THS-A is very small.

Cheers Goldman

So does this mean that if you are running THS-A near maximum then THS-B can only be run at the true null?
doug smile

ive always just run mine on null point , have had ths A from 45 to 90, more feedback the higher you go. hey doug when can i become a super hero member lol  thumbs up!
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dasenator777
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« Reply #36 on: Thursday February 7 2019 14:19:39 AEDT PM »

  
Lots of different areas mate
From Dunolly in VIC to Western NSW and places in between.
I've not gone above mode 3 using the 8"
But mostly it's mode 1




very interesting,,,, do you run the null point on the smaller side then  smile
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sd220d Digger
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« Reply #37 on: Thursday February 7 2019 15:03:20 AEDT PM »

  
  
  
8" Commander gets my vote  thumbs up!

Mal


Can you detect with your 8" commander in mode 1 most of the time?

Yes, most of the time I use mode 1

Mal


Thanks Mal.
Have you dug any deep targets using mode 1 with the 8" coil?
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egixe4
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« Reply #38 on: Thursday February 7 2019 15:34:19 AEDT PM »

  
  
Lots of different areas mate
From Dunolly in VIC to Western NSW and places in between.
I've not gone above mode 3 using the 8"
But mostly it's mode 1




very interesting,,,, do you run the null point on the smaller side then  smile

No not really, null point mostly.
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Goldman
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« Reply #39 on: Thursday February 7 2019 15:36:01 AEDT PM »

  
  
With running THS-A up near maximum, and it’s noisy, do a MGB, but if still noisy, then check that you are running THS-B at NULL (or close to it) as the THS-B useable band at or near max THS-A is very small.

Cheers Goldman

So does this mean that if you are running THS-A near maximum then THS-B can only be run at the true null?
doug smile

Doug,
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 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.

Cheers Goldman


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