DetectorMods

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General Discussion / Re: new generation coils on gp series detectors
« Last post by debongos on September 21, 2021, 09:48:22 pm »
Great to hear Wes. I have been interested in the Detech models so might look into getting a coil from them.

I unfortunately haven't been out for quite some time. We have been impacted by Covid in the Territory and my load work has significantly increased over the last two years.

Peter
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General Discussion / Re: new generation coils on gp series detectors
« Last post by WesHawkins on September 19, 2021, 11:39:05 am »
Hi Wes, been a long time since I've been on here so hopefully your still out there. How did you go with the DD Coil on your modded 5000 in regard to the front end gain?

Peter
 
  Hi Peter,  ya I’m still here, just so busy working on cars in my shop that when I come in for the night I find myself just to tired to get in online. I have actually been getting out a little more in the past few months.  I use the Detech 15 DD and the stock Minelab 11 DD in trashy areas.  I do turn up the front gain a bit.  I turn it  up until the detector starts to get a little unstable then down just enough to smooth it out.  The factory gain I keep around a 4 or 5.
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General Discussion / Re: new generation coils on gp series detectors
« Last post by debongos on August 10, 2021, 09:25:07 pm »
Hi Wes, been a long time since I've been on here so hopefully your still out there. How did you go with the DD Coil on your modded 5000 in regard to the front end gain?

Peter
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New Detector design / your dedector
« Last post by sokaloblaka on July 22, 2021, 11:56:27 am »
Hello, I am very curious about the new detector. When will it be completed?
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New Detector design / New detector design
« Last post by skuchin on February 04, 2021, 05:40:39 am »
Wait for the New detector design or MOD my GPX5000 ?
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General Discussion / Re: Detector mods Facebook group
« Last post by shepcal@sti.net on August 11, 2020, 12:55:18 pm »
I've had Woody's mods on my 4500 for 8+years.Wish I could have gotten out more, but it was what it was. just retired; body is junk but going to try to get out more often. That being said, I have found abit of gold with my modded 4500. Could it all have been found with an unmodded 4500? Maybe. We have done some pretty clear tests that prove the modded detectors 3500,4500 and 5000 will pick up a .5 gram nugget at 16", whereas a stock won't in the same circumstances. Wish I would have had this detector 20 years ago.
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New Detector design / Re: Any news?
« Last post by Rockwall on June 01, 2020, 01:03:24 pm »
I have sold the 7000 and now just using the modded 3000. Ready for your new one!😉
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I have around 3 or 4 designs on the go, sometimes they take 6 months to design and test, always a little bit different. There is also the new detector in the pipeline as well.
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I can't keep up. So these boards are an improvement on the upgrades I had done in December?
10
We are starting to run some new boards out that have a far greater performance on tiny gold and big deep gold using large coils. The new boards have a set of very fast low noise intermediate drivers added, inclusive of new components to give a different attack and decay phase shift that helps greatly with the ignoring of hot rocks.

This allows far more gain to be used while at the same time reducing the response to hot rocks and ground noises. The new settings allow the use of a large mono coil even in normal timings as to be adjustable to the point where it is far less sensitive to ground fluctuations and the dreaded hot rocks.

Now just because we put a turbo charger on the V8 it does not mean that you can wind everything full and go hoon around in the rain, you just end up doing wheel spins and getting nowhere fast.

The type of ground is the main thing that you have to deal with, red hot iron stone ground means to reduce the gain so that the input circuit of the detector is not overloaded by a huge ground signal, reducing the gain and the variable frequency control helps control the noise, 

In mild ground such as pipe clay and some river banks it is possible to run the gain nearly full on, this has not been possible before as the earth field creates too much of a weee wooo sound when moving the coil up and down a river bank.

As the biggest deepest gold is more likely to be found in normal timings the upgraded sub board allows the use of normal timings in most circumstances, even with a 24 inch coil. Tiny gold such as spurry reef or 0.005 gram bits are easily detected in Enhance mode with a small coil, running the variable frequency around 200 or more with the gain set as to allow perfect ground balance is outstanding. My own testing with a mono 10 x 5 coil on a 0.005 gram gold can actually cause an overload signal on the detector. This tiny gold was detected out to 8 cm.

The real testing should always be carried out on the ground that you intend to detect, bury a target such as a gold nugget or melted aluminium and try to get it so deep that you can just detect it, experiment with settings and coil sizes as to get the best depth without making the detector unstable and noisey.

After playing with the detector and if you get confused with the changes, its very simple to reset the detector by turning the detector off, holding the power switch down until it goes dee dee dah and turning the control to reset all, then turn the other control to do the reset. It is as basic as it sounds.

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