northwest QED vs 4500
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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.
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australian electronic gold prospecting forum.com  |  QED users  |  QED users (Moderator: bugwhiskers)  |  Topic: QED vs 4500 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: QED vs 4500  (Read 968 times)
dasenator777
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« Reply #20 on: Sunday September 22 2019 11:36:37 AEST AM »

im gonna do my own tests on the qed this arvo on a 50c, i reckon i can get better than those results produced so far, i run my vol no where near 30..... 70 to 90 is my norm, will be testing 11" commander mono and dd, 8 " commander mono, 12"nf mono, 17x11 coiltek mono, and nf 20 mono. will post my results after dinner tonight


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GARY
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« Reply #21 on: Sunday September 22 2019 12:40:10 AEST PM »

Good stuff D777 the more the better.

Also to see if you can reach the 60 cm mark using what settings and coil to achieve that on a uniform target such as the 50c coin.
 
Gary.
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Eski
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« Reply #22 on: Sunday September 22 2019 13:00:22 AEST PM »

FYI Gary , it is indeed Mick doing the testing on the detectronics videos.
good guy , knows his stuff , i have no doubt he would have smoothed out the sdc threshold to some degree...

now back to tests......
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Blip
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« Reply #23 on: Sunday September 22 2019 13:02:41 AEST PM »

Yeah good one 777. Comparing our 11” Commander monos will be interesting as long as our GB’s are the similar. I have a copper coin and some lead to throw in there as well.

Al.
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GARY
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« Reply #24 on: Sunday September 22 2019 13:27:34 AEST PM »

  

FYI Gary , it is indeed Mick doing the testing on the detectronics videos.
good guy , knows his stuff , i have no doubt he would have smoothed out the sdc threshold to some degree...


Okay thanks Eski as it was the beard that confused me as well.

Gary.

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GARY
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« Reply #25 on: Sunday September 22 2019 14:04:15 AEST PM »

D777 I recall you posting a link in another discussion to this headphone amplifier in the pic below which I purchased.

I have it attached to the front of my GPX battery harness where I can either plug in my headphone or GME external speaker when using my GPX. Also can then use it with a cable from the QED to the amplifier and my preferred headphone. The price of the Amp is nothing like the cost of the other amps and setups, wireless and alike however I feel it has enough amplification for my GPX and QED.

I did not use the Amp and headphone for my tests on the 50c coin only using the earlier Nokia external speaker that came with the QED.

Gary.

P.S. I sure have given my keyboard a workout in the last few days with my postings here.
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bugwhiskers
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« Reply #26 on: Sunday September 22 2019 14:16:38 AEST PM »

It has been mentioned before but just in case.
By using headphones it is easier to hear a faint signal. Couple this with the pitch change being heard long before the signal volume goes up it's possible to hear a faint target 25%-30% further out.

PS. Logitech have discontinued production of the X50 speaker. I have purchased the remainder from the local Officeworks and hoping to get some more from down Melbourne way.

PPS. Using earbuds provides the same benefits but without cooked ears during summer and inability to hear overhead branches breaking off trees.
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phrunt
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« Reply #27 on: Sunday September 22 2019 14:34:10 AEST PM »

It might be wise to contact the wholesalers and see what they've got let if stock bugwhiskers, because you are a manufacturer of a product they'd have no trouble signing you up to be able to buy from them.  I've dealt with many of them  before on the list below, the ones that may make it a bit more difficult are Synnex and Ingram but they may take you on, you could just buy whatever they have left.  I'd imagine quite a bit.  Just explain to them what you do and what you use them for.

These are the main ones in OZ

  

Compuworld are another one and they appear to still have them in stock

  

There is no point you paying retail when you would be able to get them wholesale  happy face
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GARY
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« Reply #28 on: Sunday September 22 2019 14:59:08 AEST PM »

  

PPS. Using earbuds provides the same benefits but without cooked ears during summer and inability to hear overhead branches breaking off trees.


Good point Bugwhiskers and the headphone I use do just that with their ability to hear external noises and the foam earpads produce no problem for my ears allowing them to breath during summer instead of being completely enclosed as with other types of headphones.

Gary.
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bugwhiskers
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« Reply #29 on: Sunday September 22 2019 15:18:31 AEST PM »

  
It might be wise to contact the wholesalers and see what they've got let if stock bugwhiskers, because you are a manufacturer of a product they'd have no trouble signing you up to be able to buy from them.  I've dealt with many of them  before on the list below, the ones that may make it a bit more difficult are Synnex and Ingram but they may take you on, you could just buy whatever they have left.  I'd imagine quite a bit.  Just explain to them what you do and what you use them for.

These are the main ones in OZ

  

Compuworld are another one and they appear to still have them in stock

  

There is no point you paying retail when you would be able to get them wholesale  happy face


Thanks for the links.
Officeworks are calling it a clearance sale and the price has been reduced from $29 to $20
A staffer did a lookup and said they are being discontinued.
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Blip
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« Reply #30 on: Sunday September 22 2019 16:03:23 AEST PM »

Gary, my amp is similar to yours which only cost me $20 but have noticed they have gone up to $25. Must have been popular!

Earbuds are good being able to hear the faints and external noise. Its the leads getting snagged all the time that gives me the shits!

Earbuds, $20 amp and the Quest wirefree mate or whatever they are make a good combo.

My ipad wont allow me to upload pics unfortunately!
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Blip
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« Reply #31 on: Sunday September 22 2019 18:29:13 AEST PM »

Ok, i got out for a little bit very late this arvo. Why i chose this spot to test ill never know as it turns out its an old house site! Still, i was able to do a little testing. Later in the week ill do better tests over some clean ground.

I air tested with the coil laying directly on the ground. I made a measuring stick out of a piece of conduit with measurements marked with a texta.

The Nugget Finder 20” Advantage is a surprising coil. With air testing, the response is greater above the outside edge than the centre!

50c piece

GB 225
B 51 = 42cm
B 52 = 48cm
A 80
Mode 6
Gain 5

Penny (copper)

B 52 = 60cm

2 bucks

B 52 = 53cm

Now, the Minelab 11” Commander mono at this stage i tend to think i may be having some troubles with. I have to run a high GB. Hopefully i can get a chance to make a final decision on this coil later this week. If it works out to be kaput ill consider a 14”/15” mono as a replacement.

GB 272 ( almost 50 above the NF 20”)
Mode 1
Gain 3

50c

38cm

Penny

45cm

2 bucks

38cm

At this stage treat these with a grain of salt mostly because i would prefer to test in a more suitable environment.

Al.

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GARY
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« Reply #32 on: Sunday September 22 2019 19:57:12 AEST PM »

  

Gary, my amp is similar to yours which only cost me $20 but have noticed they have gone up to $25. Must have been popular!

Earbuds are good being able to hear the faints and external noise. Its the leads getting snagged all the time that gives me the shits!

Earbuds, $20 amp and the Quest wirefree mate or whatever they are make a good combo.


Al I think I paid around the $36 mark for the Amp and yes not being connected by a cable to the QED is good however I am used to it with the GPX and its power lead. Actually I have cables running all over the place on the GPX battery harness and I am always last to head off for a detect with my mates with my swing arm set-up, connecting up my army belt with everything I have hanging off it, connecting up my hipstick & bungee cord set-up, placing the headphone over my hat and not tangling up its cable before plugging it into the amp, just to mention a few before I am content.

Gary.
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GARY
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« Reply #33 on: Sunday September 22 2019 19:59:58 AEST PM »

Now that is still a good test report Al as was Goldman’s earlier on including gold and now you including the copper penny and $2 coin.

Have taken screen shots of both Goldman and your results for my test result records.

I wonder how D777 QED results will differ using his settings with the coils he proposes to test with.

Gary.
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Goldman
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« Reply #34 on: Sunday September 22 2019 20:56:14 AEST PM »

Hi all,

Been out of action today so haven’t caught up with the forum posts until now.

So two things:
• tests done with target on the ground,
• I will post a picture of the 1oz nugget I used in the tests tomorrow as I need to change the image type so the forum will accept it

All interesting stuff.

Cheers Goldman
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Blip
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« Reply #35 on: Sunday September 22 2019 21:40:34 AEST PM »

  
  

Gary, my amp is similar to yours which only cost me $20 but have noticed they have gone up to $25. Must have been popular!

Earbuds are good being able to hear the faints and external noise. Its the leads getting snagged all the time that gives me the shits!

Earbuds, $20 amp and the Quest wirefree mate or whatever they are make a good combo.


Al I think I paid around the $36 mark for the Amp and yes not being connected by a cable to the QED is good however I am used to it with the GPX and its power lead. Actually I have cables running all over the place on the GPX battery harness and I am always last to head off for a detect with my mates with my swing arm set-up, connecting up my army belt with everything I have hanging off it, connecting up my hipstick & bungee cord set-up, placing the headphone over my hat and not tangling up its cable before plugging it into the amp, just to mention a few before I am content.

Gary.

It would be nice to have all this tangle free, noise free, latency free.....did i forget anything? Oh yeah great volume! Maybe im asking too much!
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Blip
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« Reply #36 on: Sunday September 22 2019 21:44:23 AEST PM »

  
Hi all,

Been out of action today so haven’t caught up with the forum posts until now.

So two things:
• tests done with target on the ground,
• I will post a picture of the 1oz nugget I used in the tests tomorrow as I need to change the image type so the forum will accept it

All interesting stuff.

Cheers Goldman


Be buggered if i can upload pics from the ipad. I can elsewhere without issues.

My pics are jpeg so i convert to jpg yet for some reason it still wont work. I then convert to pdf and still no luck.

Im reducing the size and converting to an excepted format but no go!
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GARY
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« Reply #37 on: Sunday September 22 2019 21:45:17 AEST PM »

  

Now, the Minelab 11” Commander mono at this stage i tend to think i may be having some troubles with. I have to run a high GB. Hopefully i can get a chance to make a final decision on this coil later this week. If it works out to be kaput ill consider a 14”/15” mono as a replacement.

GB 272 ( almost 50 above the NF 20”)
Mode 1
Gain 3


Al if you look at my GB table below which I posted a while back in another discussion you can see the difference in GB numbers between three different Mode settings. Therefore your Mode 1 GB reading with the 11" Commander being almost 50 above the NF 20 " Mode 6 GB reading does appear normal to me as in my table Mode 1 was 18 above Mode 3 and 28 above Mode 15 although your GB 272 is rather high. I expect extra Gain may raise the GB readings also.

Gary.

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Blip
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« Reply #38 on: Sunday September 22 2019 23:01:25 AEST PM »

  
  

Now, the Minelab 11” Commander mono at this stage i tend to think i may be having some troubles with. I have to run a high GB. Hopefully i can get a chance to make a final decision on this coil later this week. If it works out to be kaput ill consider a 14”/15” mono as a replacement.

GB 272 ( almost 50 above the NF 20”)
Mode 1
Gain 3



Al if you look at my GB table below which I posted a while back in another discussion you can see the difference in GB numbers between three different Mode settings. Therefore your Mode 1 GB reading with the 11" Commander being almost 50 above the NF 20 " Mode 6 GB reading does appear normal to me as in my table Mode 1 was 18 above Mode 3 and 28 above Mode 15 although your GB 272 is rather high. I expect extra Gain may raise the GB readings also.

Gary.



Thanks Gary,

As i do remember that conv re your chart i had forgotten the GB change with a change in mode.

I have been as high as 292 in GB with that 11” mono. Later in the week ill get more serious with some testing.

Yes the penny shows the QED to be a good coin hunter!
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Goldman
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« Reply #39 on: Monday September 23 2019 07:48:12 AEST AM »

  
  
Hi all,

Been out of action today so haven’t caught up with the forum posts until now.

So two things:
• tests done with target on the ground,
• I will post a picture of the 1oz nugget I used in the tests tomorrow as I need to change the image type so the forum will accept it

All interesting stuff.

Cheers Goldman


Be buggered if i can upload pics from the ipad. I can elsewhere without issues.

My pics are jpeg so i convert to jpg yet for some reason it still wont work. I then convert to pdf and still no luck.

Im reducing the size and converting to an excepted format but no go!

Best to convert to the pics to a .png file from the jpeg/jpg. Then they can be uploaded.

Cheers Goldman
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