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This is the report received from AuQuest. Click the read more to see the  whole report. Thanks to Gerald from AuQuest who gave me permission to reproduce the information here....

Demonstration of the auQuest GD1000


Australian company AuQuest Pty Ltd demonstrated their new AuQuest GD-1000 gold detector in Kalgoorlie on Sunday the 11th of December 2005, just off Anzac Road. Several prospectors from the area attended the demonstration, conducted on a medium mineralised patched located just off Anzac drive.

Gerald Wright, chief engineer of AuQuest Pty Ltd, first presented and discussed the new auQuest GD1000 gold detector machine. Gerald highlighted the key features of the machine, these being superior depth, sensitivity and quietness.


Tests A to F Equipment Comparison

The AuQuest GD1000, using a 17x11 (11 inches wide) elliptical coil, with the detector set in pulse mode, low minerals, high gain, was tested against the Minelab GP3500, using a 14" DD CoilTek Pro coil, and set to DD, deep, sensitive, and fixed, with ground balancing always performed near the target using the handle button. The same amplifier and speaker was used with each machine so all present could hear the detector audio.

The following tests were conducted:

Test A

A 1.2g nugget was buried at approximately 100mm via a small hole punched into the ground.

The AuQuest GD1000 was able to convincingly detect this target as agreed by all present. This was heard as a sharp, pulse-like sound, whereas scanning the ground adjacent presented zero sound. The signal from the GP3500 was very weak, with the prospectors present indicating that they would not dig this target


Test B

A similar test was conducted with a sliding stick at a 45 degree angle with a 35g gold nugget target on an old digging mound, at a depth of approximately 300 mm (12”). The auQuest GD1000 was able to detect this target at sufficiently greater depth as agreed by all present. The increase in depth was between 25 to 50 mm (1 to 2 inches).

Test C

One of the audience members at this point asked Gerald whether or not the AuQuest GD1000 would be able to detect his gold chain. The chain was very thin and made up of small gold links. This audience member said that his chain could not be located by any detector he had ever tried. The chain was laid down on the ground in a line (not heaped).

The AuQuest GD1000 was able to easily detect this chain with a very strong signal. The test was repeated with the GP3500, which presented only a very weak signal on the target. The auquest GD1000 clearly demonstrated superior sensitivity in this test.

Test D

A test was then conducted with a 250 mm long rusty iron sheet located near a 0.2g nugget separated by a distance of approximately 150 mm. This test was designed to show the gold optimisation of the auQuest GD1000.

The auQuest GD1000 was able to detect the 0.2g nugget with a sharp bip like sound, without any interference from the iron bar. Using the Minelab GP3500, the audience was unable to distinguish between the gold nugget and the iron sheet at the same range.

The auQuest GD1000 was a clear winner in this comparison.

Test E

The final test involved operation near power lines. The group relocated 150 metres up the track to some very low power lines. A 5c coin was punched 100mm down into the ground and buried.

The AuQuest GD1000 was able to easily detect the 5c target with no ground noise at all.

The GP3500 was unable to operate without extreme interference in cancel mode within about 50m of the power lines. At 150 metres from the power lines the typical noise of power lines could be heard in the GP3500 audio in normal mode.

Test F

One of the audience members indicated they had a patch a few kilometres away with several lead targets buried at increasing depths. These targets had been buried for 3 years. The group relocated to this patch to compare the machines on these targets. The ground had very low mineralisation.

Several members of the group used their own detectors on this patch, with the following results:

AuQuest GD1000 -5 targets
GP-3500 DD 14" coil -2 targets
GP-Extreme -DD 14" coil coiltek pro coil -2 targets heard, 1 target just heard
GP-Extreme -DD 18" coil -2 targets heard, 1 target just heard
GP-Extreme -mono 24" coil -3 targets heard, 1 target just heard
SD-2100 -several coils tried -2 targets heard, 1 target just heard

The auQuest GD1000 was the clear winner in this test by all accounts, obtaining 5 targets in total.

Pre-Demo Test G

On the Friday the auQuest GD1000 was tried on very heavily mineralised ground located at Ballagundi in front of witnesses. At this location a 1.2g nugget was punched down at varying depths.

The auQuest GD1000 with a 14”DD coil, was able to detect this target with a strong signal at 100mm. The GP-3500 with 14”DD coiltek pro coil, was able to detect this target with a strong signal at 75mm, but with no signal at 100mm.

Pre-Demo Test H

At the same location four lead targets had been buried at increasing depths.

The GP3500 with a DD 14” pro coiltek coil was able to detect 2 targets. The auQuest GD1000 with a 14” DD coil was able to detect all 4 of these targets The auQuest GD1000 was extremely quiet on this ground given the highly changing mineralised conditions, whereas the GP3500 was somewhat noisy even when operated in the tracking mode.


In all tests performed in Kalgoorlie it was clear that the auQuest GD1000 gold detector was a winner, with superior performance in depth, sensitivity and ground quietness. Adjustments of ground balance on the demonstration site were minimal, being a maximum of ½ turn of the fine 10-turn ground balance control.

AuQuest is looking forward to further demonstration of the performance of the auQuest GD1000. Please contact This email address is being protected from spambots. You need JavaScript enabled to view it. for a demonstration date near you.

AuQuest Pty Ltd
Tel: (08) 9375 2533
Fax: (08) 9375 2599
International: +61 410 449 100
email: This email address is being protected from spambots. You need JavaScript enabled to view it.
website: http://www.auquest.com


When looking at the information in this test it is clear that the GD1000 is definitively a very good detector. I spoke to Gerald this morning and hopefully we will arrange something in the New Year to go out and test the detector for a few days. As you know I am a SD2000 user and lover but if this detector works as good as shown then I for one will recommend purchasing. Of course as with everything there are pro's & cons and some issues such as spare batteries to be sorted out. Gerald mentioned that extra depth can be achieved at the expense of battery time so this is why I mentioned that. Either way right now the detector is superior on the tests performed than any GP/SD  Minelab Detector. 

My special thanks go out to Gerald and the Team of AuQuest for allowing me to publish this report but I felt that this detector warrants fair publicity and although I never attended the Kalgoorlie Demo I believe that the test is genuine and the report true. It is good to have a detector that although probably won't be a ground breaker like the SD2000 was it will still open up ground that presently is out of the range of the PI detectors we are using now. I might add that I am in no way connected to AuQuest and have nothing to gain from promoting or publicising information on the GD1000 and all reports from me and written by me will therefore be totally unbiased. I don't get a new detector free.. hint hint like some I could (but won't!) name.

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