Here I found a video of the qed back in 2011.
Great to see gold being found way back then.

  

There's your answer Herman.

Stick with minelab or a QED.

Talk to Reg Wilson about the QED.

In regards to this 20" dd coil you talk about Herman, instead
Why don't you get a 25"  Nugget Finder DD X coil (coming out very soon) instead of paying a fortune from this guy who has no track record of any gold found in Australia? Or any gold whatsoever.
His website is not even his advertising, they are stories and pictures of others and taken without permission.

Who is your tester of this 30" coil of yours Alie?

So you are saying your 30" coil is not any good for gold detecting? ( huge gold nuggets @ 1.5 - 2  metres)
And does that mean your price tag of $4800 for this coil is not worth the huge amount of money that only rich people can afford?

I am going to build a 20"DD from Carbon Fiber and compare the discrimination to the CC.

GPX exhibits excellent discrimination, but it has a slow recovery speed. It will never find anything under Iron no matter the coil configuration or coil attached. This kind of discrimination is a treat that only Nexus MP can offer with its Silver Scout coil, but not at depth of 50 cm for a coin.

Thanks for interesting test.

What about stacked buried different targets?

Par example: gold nugget/coin buried at 50cm of depth under (in vertical line) iron wedge buried at 20cm?

I wonder since NF is to release a 25"DD then to what depths it may discriminate too on a GPX. 

Also how the 25"DD would stack up against the 30"CC to cope with Oz ground in the deepest Soil / Timing and for an outright in-ground depth test comparison.

Gary.

Actually i mean "in vain" or all day futile dig of about 10 holes at 1m of depth..

Dontbstme:  Watching this thread with considerable interest.

  with your Aussie tests.


Very droll, Howard. 

The concern regarding deep Iron involves the old timer sites in Oz, which at the most part are a mess of trash.

I did not have the time to go out and dig real targets to check how deep the Iron can be rejected with the GPX, but for sure the level 10 of IR and pure untouched non-ferrous deep signals in the ground is a hell impressive result to see as no IB detector is able to show such discrimination on my test site. My detectors will beat for sure any other IB on deep discrimination, but the GPX definitely caught me off guard with my own coil.
The coin I use on the video is 20.5 mm, but the one in the ground is 18mm, not 20.5. I just did not have the same small coin to use in the video. So in full IR the GPX with the 30"CC blasted an 18mm coins at over 20", 12" of which are under ground. I have not seen anything to come close to this display.

I am going to construct 11'5" CC (by the end of next week) for the GPX with the special purpose to explore how well the discrimination of this detector will go with the CC's in depth. I will also build a 20"DD again to see how the discrimination will work and if there will be any difference between DD and CC discrimination with the GPX.