16"DD nugget finder xp switch

Gday all I just purchaced a second hand 16'' xp nugget finder and it the older type which way does the switch work the switch is on the rhs of coil any help would be great as Im testing it out on Saturday .Ive finally sorted out my 3000 I set it up as in JPs DVD series and are wrapped with how much better it ran so I dont want to stuff it up with wrong coil setting.Cheers Dave

Dave,
Anticlockwise on the switch and the coil should be in normal DD mode, and clockwise puts it into XP mode (the signals are inverted). This is especially helpful in areas that might have higher EMI (interference) levels as used in XP mode in conjunction with Mono mode on the detector's RX switch, it does an excellent job of quietening the detector down. Cheers.

Hi all,
I also have a 16" NF DD coil I bought with the 3500 but never really know how to use it .
Can some 11 with knowledge on these coils please explain to me how, why and where these should be used in normal and xp mode

Really appreciate any help.

Thanks

madmax800

I have this coil and I love its overall sensitivity. (Only difference is my switch is up the cable)
To give an example of the inverted signal: I had a deep broad signal and thought it may be a good time to try out the switch. I switched the machine off, then changed the phase/flicked the switch. After firing things up again, I found that the signal was coming in like a shallow target and much easier to pin point. After digging down through a mullock heap and a little way into original ground. Yes you guessed it, it was a large bit of old steel. None the less the audio signal was helpful.
Brett.

I have a 3000 and NF 20" SL XP DD fiberglass coil so I am interested in this thread. I wonder if our NF DD's are better than CoilTek and Commander DD's in performance?

russcoit(Dave) wrote, "Ive finally sorted out my 3000 I set it up as in JPs DVD series and are wrapped with how much better it ran so I dont want to stuff it up with wrong coil setting." Dave, did you install a Gold Button on your 3000 yet, as I can give you instructions on how to do it if you want, I could PM you? Can you please very,very briefly tell me your settings for your 3000 to help me tune up my machine is appreciated??

Sandy, JP also recommends this setting, XP mode with Mono.
"...there have also been a few gains in performance by going with the XP option, namely an obvious increased ability to handle really hot ground but also increased depth performance when operating in XP mode and Mono mode on a GP3500 (Enhance on an extreme)."

If someones head is spinning and is totally confused on what settings to use for what ground type or what sized nuggets or for what outside interference on a XP DD coil. Just to be safe use Normal mode with DD and you cannot go wrong. I sure wish NuggetFinder would have given a short but complete, all inclusive, owners instruction manual with the purchase each XP DD coil to make things totally clear. As it is not totally clear now and I think most XP DD owners are still not 100% knowledgeable on what to do in every situation, like me.

I would be glad to buy a GPX 5000 with the built in phase-switch with a non-XP DD coil and Monos at the end of this year but until then a person will happily make due with what we have and a 3000 with a XP DD is nothing to sneeze at and has top performance and super duper depth in bad ground with full swath coverage and I am thankful and do appreciate what I have because I could have nothing and be totally broke and not be able to afford anything. If I was about broke I would be looking for a used green box 2100 or 2200 so I am one up on that now with my 3000 and I like the Dual-Voltage advantage to find the smaller nuggets a bit better. Maybe its time to sell my 3000 and sell some gold to buy a 4500 but I will hang on as I am very happy and satisfied with what I've got now. The 3000 is one a fine machine. The 3500's Medium tracking speed is nice but I can live with the 3000's fixed Fast tracking speed with a Gold Button to switched from Fixed. I have no complaints with the 3000. If I start complaining to myself then it its time to change!

Nugget Finder XP Coil Report
http://www.nqminersden.com/nugget_finder_xp_coil_report.htm

Gday all thanks for the help on this ,Beer beeper my 3000 is set up to the following(rear panel) boost in deep,threshold 1 o'clock,signal at 3 o'clock,tone at 2.30, volume at 4 o'clock,(front panel) level adjust at 1 o'clock,all metal mode,soil in sensitive,coil depends on what your doing but runs exellent in psudo mono,and balance in fixed making sure to balance very regular.This works for me see how yours goes but remember you previous settings if it doesnt.Hope this helps I still have to fine tune to different grounds this is my starting point.good luck with it.cheers Dave

Thanks alot Dave, I recorded your settings for future use. Only the Sensitive setting is optional for small gold in shallow ground I think.

Yes Normal mode--DD mode acting like any other DD coil is best for smaller nuggets and to be used about 70% of the time like JP said. I think Normal mode--MONO mode is a Pseudo mono just like any other DD, 1/2 of the coil works acting like a mono coil. BUT I wonder if there is ever any application to use XP mode--DD mode???? Since XP mode--MONO mode seems to be always recommended to both get more depth and to handle interference better.

ALSO CoilTek makes a 3rd line of coils called Anti-Interference(some people call them Salt) Coils(they are only 5% less depth as compared to a DD coil). I wonder what works better, XP mode--MONO mode "OR" a CoilTek Anti-Interference coil??

When switched to XP mode the purpose is to find bigger nuggets deeper in bad ground, if I understand right, but not as senstive to smaller nuggets is a sacrifice.

I hope JP does not mind reposting this here, he should'nt as it is here to help people is the intended purpose. Thanks to him for his great help he has helped us with in sharing over the years, by JP about DD XP coils:>>


"G'day Gary, the name labelling on your Nugget Finder XP coil are just what they say they are, N equals NORMAL and XP means XtraPerformance, in the real world (I can see your cunfusion BTW) the N mode just means as per a normal DD would behave depending on the switch positions you choose on your detector (if it was an SD machine for example then there is no other option for you to choose but to detect in NORMAL mode).

The XP mode on the other hand will invert the signal response of targets generated by your machine, eg: a small target would traditionally create a high/low wheee/whooo response and a large target the opposite, through phase changing Nugget Finder can manipulate the response so the sound is reversed. This phase changing characteristic has been used to great effect on large targets at depth, due to the more recognisable signal response created by a HIGH/LOW signal.

However there is also a spin off on some Nugget Finder coils (the Fibreglass versions with the switch in the coil housing), if you are using your Nugget Finder XP-DD coil in XP mode and at the same time select the MONO mode on your GP series machine, you then can take advantage of a phenonena where the signal response remains as per normal operation (small targets go high/low) but at the same time generate a similar behavioural characterisitic of CANCEL mode. CANCEL mode can be confusing at the best of times due to the way the detector behaves, I tend to find Cancel mode is twitchy in noisy ground and has less depth than MONO mode, with the use of XP mode on a Nugget Finder XP coil and MONO mode on a GP series machine you have a nice blend of both worlds.

I have been informed by the factory in Bendigo that they will be returning to the switch in the coil housing in the near future, the reason they moved it was due to the orignal switch being problematic (mainly due to misconceived concerns by coil buyers) but since then have been able to source new technology which will once again allow things to revert back to the original design.

Hope this helps

JP

Post note: I probably should have explained this better above, by using XP mode on a Nugget Finder XP-DD coil in conjunction with MONO mode on your GP detector, you can just about eliminate all interference whilst still maintaining a familiar detector response."

Gday beer beeper on JPs DVD's he confirms with Mr Candy (PI machine inventer) that it is ok to run in Deep and sensitive but I found out on the weekend at Amherst near Talbot (hot spots everywhere) that it ran better in hotter ground in deep and normal.I havnt as of yet done the goldbutton mod yet I have the instructions and I will do in the next 2 weeks or so.I wonder if JP has time can he please comment on this thread.Cheer Dave

G'day all. There are two things an XP coil can do in XP mode, because the XP mode changes the phase of the coil the first thing is the response is inverted which was the original reason behind the design (large nuggets at depth can be more easily recognized in extreme mineralisation if the response is high/low rather than the other way round). The second thing is a byproduct but happily accepted anyway, because the phase of the coil is changed when you select Mono mode on a GP series machine you can achieve a Cancel mode like behavior out of the machine (ignores interference from power lines etc).

Cancel mode also changes the phase of the coil to help ignore interference and acts like Monomode with a DD XP coil (Enhance on the GP extreme) behaving like a pseudo monoloop as well, however due to the phase change the response is inverted which makes it hard to adjust when listening for little bits (on the GP extreme, GP 3000 and GP3500). When using an XP coil in Mono mode the response reverts back to normal again (high/low on small targets and low/high on large).

This method still has merit with the GPX series if interference is an issue, but Cancel mode with the response inverted does nearly as well. I personally feel an XP coil in Mono mode goes slightly deeper than a traditional DD coil in Cancel mode does, so the XP coils still have their place. Because the coil is being used in Mono mode GPX users can also use the Smooth or Enhance timings in fixed GB to deal with mineralisation.

Hope this helps a little.

JP

I have read this a 100 times, and running a GP detecter with an XP dd coil in momo acts in ways like a Anti Interference coil or running in cancel mode.

What if I run the same xp dd coil in xp mode (coil switch) and dd (on the gp)
hope my question makes sense..

If I take a Nugget Finder XP DD coil to Dunolly what settings would I use on

1 ) the GP3500

and

2) the NF XP dd coil.

Thanks
madmax800

I have read this a 100 times, and running a GP detecter with an XP dd coil in momo acts in ways like a Anti Interference coil or running in cancel mode.

What if I run the same xp dd coil in xp mode (coil switch) and dd (on the gp)
hope my question makes sense..

If I take a Nugget Finder XP DD coil to Dunolly what settings would I use on

1 ) the GP3500

and

2) the NF XP dd coil.

Thanks
madmax800

From what I am learning about the XP coils, there is no need to switch to XP unless I get a broad signal that sounds very deep and I want to clarify the centre point of the signal.
The ability to use these coils as an anti interference coil is something that I haven't tested yet. After reading this thread I must say that there is the odd spot out there that warrants testing of the theory. If all above is true and I have interpreted correctly then there is spots I know of that will give up gold that I haven't been able to hear signals from, with standard set ups.
Is it fair to say that electrical interference from an electric fence could be overcome with an XP coil? If this is the case then I have another trip to plan. I'm excited.
Brett.

madmax800 wrote:I have read this a 100 times, and running a GP detecter with an XP dd coil in momo acts in ways like a Anti Interference coil or running in cancel mode.

What if I run the same xp dd coil in xp mode (coil switch) and dd (on the gp)
hope my question makes sense..

If I take a Nugget Finder XP DD coil to Dunolly what settings would I use on

1 ) the GP3500

and

2) the NF XP dd coil.

Thanks
madmax800

For the maximum depth on large targets use DD mode, XP mode on the coil, Deep audio, Medium Tracking Speed. Use a slow sweep speed, pay attention to faint raising pitch responses as these are the larger bits at depth, also keep an ear out for confused signals (targets that trigger both channels of the machine). The above settings should be used with the largest DD coil possible.

There is quite a performance gain available using a raising pitch response on large targets (especially with larger coils (18" and up)), GPX users should keep this in mind when using Enhance as the Response can be inverted on the 4000/4500 to good effect.

JP

Hi all ... I just found this thread

I am looking to purchase a Nugget Finder XP Phase Control Coil

If anyone would like to sell that coil, and it is in good-ish condition, please let me know.

I do have an advert listed in "wanted to buy/sell" https://golddetecting.forumotion.net/t10157-wanted-prepared-to-pay-good

Cheers,
Kate