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Qed Major Upgrade Announced

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1 hour ago, Reg Wilson said:

Just to clarify a few points.

Firstly QED was never sold by Coiltek, but was sold by Detech, who still provide components for one of the QED options.

Maldon Gold Centre had problems with the premises they were renting in the town of Maldon, which has eventually led to the business winding up once stock is cleared.


Thanks Reg... I always appreciate your contributions,

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madtuna, I shall ask Howard who the WA tester was. The tester may or may not wish to be identified, but I will message you if I can.

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Thanks Reg, much appreciated.

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Would something like this be eligible for the upgrades?


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That's a PL1, it's had the PL2 software upgrades on it with the AGB button too which is why its being advertised as a PL2, all QED's at the moment are eligible as the QED has it's warranty extended to 5 years, all existing QED's that had the lesser warranty were also upgraded to the 5 year warranty. 

Interesting method of mounting with the Gold Bug shaft.  The battery system was greatly improved between the earlier PL1 and the PL2 in my opinion.  I assume the batteries are what hes got hanging off the back of the arm cuff there? The PL2 just uses 2 x 18650's

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It could very well of been purchased like it is as a PL2. The PL2 was originally sold like that & later as an option in the current configuration until that became standard.

That's one of the positives of the QED - regardless what model you buy PL1 or PL2 they are all upgradable to the latest configuration & software if you prefer.

I know when the 2 seperate PL2 configurations were offered/available there were some that preferred the older PL1 style set up. IMO the current set up is better but as I've said before could still do with a few improvements re: battery holder/cover, replace or conceal ribbon cable, 3D printed stand but they are minor & can be easily fixed yourself if inclined.

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I was thinking about this QED and I do recall Reg Wilson talking about for the QED to be sold in the USA it would need modifications to have resistance to the EMI from the power network there, seeing AU/NZ are 230v and 50hz which the QED is tuned for and USA 110v with 60hz.   Unless this one has had that mod, it will likely be noisy in the USA near power sources, It's probably best to get the serial number and ask the QED manufacturer if it's good to use this in the US.

One of the great things about the QED is it's resistance to EMI and being able to run right near power lines.

It could even be why it's for sale.


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Good point Simon. That QED probably needs to go back to Howard for the latest updates and to be adjusted for American power source. The good news is that these mods are free and that unit is now under a 5 year warranty from original date of purchase.

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Well my QED is on it’s way back across the pond to get it’s updates, it was sad waving goodbye to it at the post office, I’ll likely be without it for two or three weeks due to postage times but I can't complain about the price, only $14 NZD so about $10 USD I guess to send from here to OZ.... 😞  Everything I’ve read so far on the updates mean it was most certainly worth parting with it although I left the post office without it in my hands and it felt kinda lonely 🙂

A brief rundown of what I know so far about the updates from posts by Goldman and bugwhiskers (Howard the QED creator) over on Australian Electronic Gold Prospecting Forum

A lot of this is just copy and pastes of what they've said which I've consolidated into a single post to make it easier, I asked them permission to post this here and was given the go-ahead.  That forum is where Howard the creator of the QED hangs out so It always has the latest QED information but I thought I'd put it here as I know quite a few people are interested in how the QED is coming along.

Information provided by Goldman

The new ground balance is just that, a completely new method of performing the GB. All with the same physical circuitry, with a more advanced method of GB being performed via the software/firmware.

The changes you will see are the range of MGB is now 1 - 300, with the factory preset at 150.  (The old QED software had a range of 200 for the GB)

The GB is still performed in the same way as before, as is the AGB method.

The values of a few QED electronics components have changed, which has enabled the QED to accept DD and CC coils. This has greatly expanded the use of the QED and it is now able to use all of the latest coil designs (i.e. concentric coils).

It should be noted that the QED accepts these coils without having to ‘select’ via a switch selection the type of coil your using (DD or CC or Mono) as is the case with other detectors.

One other change incorporated with the updates is that the number of modes has changed.

There are now only 10 modes, with mode 11 being Beach mode. Default is still mode 3. (phrunt: Beach mode is a mode with no GB similar to Coin and Relic on the GPX)

What you will find is that you may be able to use a slightly lower mode with your favourite coils. Where I needed to use mode 3 with my 11 elite before, I can now use mode 2.

Information provided by bugwhiskers (Howard)

The new GB (DSM) starts at 8uS with 0.5uS per MODE increment to Mode 10, Mode 11 is now beach mode with no Ground balance.  

And the technical stuff I don't understand that bugwhiskers has mentioned 🙂

The decay of different grounds doesn't just affect the earliest possible sample time, the whole decay curve changes shape, albeit very slightly.

This is why DSM works so well, a repeating cycle of 36 TX's with different lengths are averaged.

And some results from the WA tester of the new ground balance system

To those wanting a review of the QED with the latest ground balance in WA, I offer the following excerpt from “the tester in WA”:

It seems to handle hot rocks much better with new ground balance
The big trick is to get null and Gb properly before you start plus sort out mode and  gain to suit
Using the 8 inch Minelab coil

Gb 204  (and didn't change up or down ) very stable even when a little bit off the ground.
Ground balance  seems to behave better right on null

A : 70
B : 51 ( null )
M : 4
G : 6

So the important parts of this review are:

1) better hot rock performance
2) ground balance is very stable and didn’t need to change it up or down whilst detecting

All of this information thanks to bugwhiskers and Goldman.

Goldman actually has a really good QED tips section which supplements the manual over at that forum which has helped me immensely in using and understanding my QED, worth checking out if you own a QED and haven't seen it yet.

Thanks also to Steve for allowing external forum links to be posted on his site for the benefit of it's users.

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Excellent report Simon. I think Howard should make you the Pacific agent for QED as you seem to really have a grip on this new detector. The latest updates are a real positive, especially the DSM, giving the QED great stability and basically doing away with the need for ground tracking. 

James Beatty and I have already enjoyed the benefits of DSM and will soon be able to report on the performance of the concentric coils as we have ordered the Detech 18" model, and await delivery.

It is my intention to do some work with the DD on some highly mineralized ground to see just how well the QED DD combination really works, and will report here on results and impressions.

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