QED

[kt315]

http://www.goldsearchaustralia.com/o...detectors.html

THATS QED???
if i put chinese voltmeter http://www.ebay.com/itm/New-Fashion-...MAAOSwA4dWGKUS
in delta pulse i will sure get the QED. LOL!

[eclipse]

The shaft looks like from White's, Hammond enclosure.
Anyways despite the "voltmeter display" there's some great tech under the hood!
Congrats to the builder team & I wish you lot's of happy customers with pictures of big yellow rocks on the coil!

[ivconic]

Obscure UI...
It need to be really good indeed!
"Available soon" sounds like "not available yet" to me.
Pffheeewww!

[WM6]

THATS QED???
if i put chinese voltmeter http://www.ebay.com/itm/New-Fashion-...MAAOSwA4dWGKUS
in delta pulse i will sure get the QED. LOL!

Delta pulse is adequate for underground howitzer and other military searching at "chernozjom" only, not for gold prospecting on hot terrains like Australian soil.
QED is created for gold prospecting on heavy (even more than 50% Ferro) Australian soil, where detectors like Delta pulse are not able to survive.
Do you know one serious Australian prospector using Delta pulse, even with Chinese Volt meter on it? I am sure not.
Problems, how to cope (GB) with extremely hot soil, with target specific "detecting holes", with very different gold targets TD etc. are with QED solved in microprogrammed way - this is why this detector is on outside somewhat spartan and without bells&whistles, which is benefit on easy to use side for prospectors.
QED is one man knowledge and work developed and "in garage" manufactured, with abundant contra-help from specific outside big-factor, so some delay at single steps are expectable.
It is time for more affordable high performance detector in field of prospecting - it is time for QED.

[ivconic]

WM6 you are right, it is not important the look and bells&whistles as far as it do the job.
Yet for $1800 it should be looking better. Or price should be lower.
We partially do know here on Geotech it's history. It's been a while.
For one short moment some of us expected it to be offered as open project, free for diy.
That was never happened here. So...
One would expect at least more modern design and better UI.
Especially today when market is pretty fed up with similar designs.
Not to mention availability of second hand Minelabs which will do the same job for less money and probably better.
Without entering deeper in analyze; only one thing here is not settled right: price.
Also that story delayed too much. It came too late.
But i am sure it will find it's own niche market even the way it is, so no harm done here by criticizing it a bit.
Detailed and fair video demonstration on the field will probably add more pros against contras.
Looking forward.
I saw this, it is somewhat better:

[Geo]

I believe that price is 1800 AU$ not usa$, so is similar to 1200 Euro.
It isn't expensive....

[kt315]

Delta pulse is adequate for underground howitzer and other military searching at "chernozjom" only, not for gold prospecting on hot terrains like Australian soil.
QED is created for gold prospecting on heavy (even more than 50% Ferro) Australian soil, where detectors like Delta pulse are not able to survive.
Do you know one serious Australian prospector using Delta pulse, even with Chinese Volt meter on it? I am sure not.
Problems, how to cope (GB) with extremely hot soil, with target specific "detecting holes", with very different gold targets TD etc. are with QED solved in microprogrammed way - this is why this detector is on outside somewhat spartan and without bells&whistles, which is benefit on easy to use side for prospectors.
QED is one man knowledge and work developed and "in garage" manufactured, with abundant contra-help from specific outside big-factor, so some delay at single steps are expectable.
It is time for more affordable high performance detector in field of prospecting - it is time for QED.

for what you so need QED if do not live in Australia?

[6666]

You can also just buy the control box by itself AUS $1200
http://www.goldsearchaustralia.com/o...s/qed-812.html

[eclipse]

I think it's a good offer. Why is that?
I live in a lower section of the list of rich countries (means poor).
There are few models made in the country and being sold for 1000-1500$ depending on model & bundles.
If those are successfully sold at this price here I can surely say the price for the device is more than fair.

Perhaps this is the reason for the "military style" outfit of the QED. If it was to look fancier that it is right now
it would probably make the device more expensive than now.

Don't forget it's a lot more expensive to produce 10 units than 1000.
Big companies (you know who) have their own machinery for making the parts
which brings down the cost for producing probably down to 100$ for model that costs in the range of 1000$+.

[kt315]

You can also just buy the control box by itself AUS $1200
http://www.goldsearchaustralia.com/o...s/qed-812.html

qed was released as fully free project, with free code and free layout. i do not see there something free, i see some
proclamations and adwertizing based on ged fame. this thread will dead like dead billions similar threads about nothing.
we say - лучше синица в руке чем журавель в небе. its better small bird in the hand than goose in the sky.
DP was done in Bulgaria, with too hard bulgarian soil heavier than australian soil.
i can give video where bulgarian testing DP on bulgarian soil with huge depth.

[eclipse]

KT315 those are completely different machines (DP vs QED).
Delta Pulse with small coil (<40cm) has ridiculous low depth on almost all targets. Not to mention sub coin sized objects (think nuggets).

It's normal that Delta Pulse is stable, I mean it can sample 20us - 25us (or so) earliest, and normally you would want to sample at 50-100us to avoid small sized objects with the frame coil.
That's simple enough. Try to sample at 10us on hard soil with small coil for small coin sized targets and below. You'll see it's not that easy.

[kt315]

NOT. DP has 40us STROBE DELAY min but its not mean you can not retune it on 10-15us delay.
retuning is simple and discribed 1000th times, but you do not want read about that.
i also plan to do two stage front end preamp for both - P-cnannel and N-channel MOSFET pi designs -
that will give you 5us of the delay. it will like kinda some converter you can fit in any PI.

[kt315]

KT315 those are completely different machines (DP vs QED).

different in what? is qed based on another/different principle that the PULSE INDUCTION?

[Qiaozhi]

its better small bird in the hand than goose in the sky.

That's like the English saying: "A bird in the hand is worth two in the bush".

[ivconic]

That's like the English saying: "A bird in the hand is worth two in the bush".

Or in Serbian "is better to have parrot in a hand than pigeon on the tree branch".
It is international saying, seems.
...
I had on the disk photo of earlier version of QED, here it is: