Jump to content
DolanDave

GPZ 7000 Auto, Semi Auto, Manual ???

Recommended Posts

Thanks Steve and Jonathan...nothing I do has been earned. Rather it is the wonderful work of Steve and Jonathan and of course many others that get me running somewhat correctly. If only I had days, weeks and years of continuous experience; rather than the odd week or day... 

fred

  • Like 4

Share this post


Link to post
Share on other sites

1 hour ago, fredmason said:

Thanks Steve and Jonathan...nothing I do has been earned. Rather it is the wonderful work of Steve and Jonathan and of course many others that get me running somewhat correctly. If only I had days, weeks and years of continuous experience; rather than the odd week or day... 

fred

I hear you Fred you about the odd week or day, on my side, work sure does get in the way :)....

  • Like 3

Share this post


Link to post
Share on other sites

Hi guys, I just had a thought. Our gold is mostly pretty small, my last multi gram piece is but a distant memory:rolleyes:, I detect in Auto GB, High Yield, Normal, sensitivity up at 18-20. I have had a few, but not overly many, tiny bits that were a signal for me in the first place, hence pulling me up to investigate.Sometimes I swear I just imagine some signals but they turn into something. You know the ones?? While the target was still in the ground undisturbed by my retrieval the signal was always there, did not fade or balance out. Still very faint due to the size, but on moving the target have lost the signal completely. Nothing, nada....having to use the either the GB2 or the GM 1000, depending which one I grab, to find the target & finally retrieve it. The signal has always been a tiny bit of gold that the Zed picked up on initially but once moved was lost. I put this down to the "halo" effect & not balancing the signal out by being in Auto GB. Like I said, while the target was undisturbed in the ground the signal was always there no matter how many times I swept over it. Not until it moved was it gone. Anybody have their own thoughts on this? Thanks.

Good luck out there

JW :smile:    

  • Like 2

Share this post


Link to post
Share on other sites
31 minutes ago, kiwijw said:

Hi guys, I just had a thought. Our gold is mostly pretty small, my last multi gram piece is but a distant memory:rolleyes:, I detect in Auto GB, High Yield, Normal, sensitivity up at 18-20. I have had a few, but not overly many, tiny bits that were a signal for me in the first place, hence pulling me up to investigate.Sometimes I swear I just imagine some signals but they turn into something. You know the ones?? While the target was still in the ground undisturbed by my retrieval the signal was always there, did not fade or balance out. Still very faint due to the size, but on moving the target have lost the signal completely. Nothing, nada....having to use the either the GB2 or the GM 1000, depending which one I grab, to find the target & finally retrieve it. The signal has always been a tiny bit of gold that the Zed picked up on initially but once moved was lost. I put this down to the "halo" effect & not balancing the signal out by being in Auto GB. Like I said, while the target was undisturbed in the ground the signal was always there no matter how many times I swept over it. Not until it moved was it gone. Anybody have their own thoughts on this? Thanks.

Good luck out there

JW :smile:    

Combination of orientation and balancing it out. Fix the GB to Manual mode before committing to dig. Use the Semi Auto mode during detecting to keep the GB simple. Make sure the Audio Smoothing is OFF!! Lower the Sensitivity and Volume to suitable levels when using Audio Smoothing OFF, threshold needs to be 27 at this level.

Hope this helps
JP

  • Like 5
  • Thanks 3

Share this post


Link to post
Share on other sites

Jonathan, is too quick! 

I keep manual set on my user button to make moving from semi-auto to manual easy. I have found that small targets will "disappear after being dug...especially flat bits.  never give up!

fred

  • Like 4
  • Thanks 2

Share this post


Link to post
Share on other sites
11 hours ago, kiwijw said:

Hi guys, I just had a thought. Our gold is mostly pretty small, my last multi gram piece is but a distant memory:rolleyes:, I detect in Auto GB, High Yield, Normal, sensitivity up at 18-20. I have had a few, but not overly many, tiny bits that were a signal for me in the first place, hence pulling me up to investigate.Sometimes I swear I just imagine some signals but they turn into something. You know the ones?? While the target was still in the ground undisturbed by my retrieval the signal was always there, did not fade or balance out. Still very faint due to the size, but on moving the target have lost the signal completely. Nothing, nada....having to use the either the GB2 or the GM 1000, depending which one I grab, to find the target & finally retrieve it. The signal has always been a tiny bit of gold that the Zed picked up on initially but once moved was lost. I put this down to the "halo" effect & not balancing the signal out by being in Auto GB. Like I said, while the target was undisturbed in the ground the signal was always there no matter how many times I swept over it. Not until it moved was it gone. Anybody have their own thoughts on this? Thanks.

Good luck out there

JW :smile:    

Dunno whether it is the "halo" or just the Z liking undisturbed ground, which in a round about way is the same difference.? But I do know in quiet flogged ground where you can use normal over difficult, manual GB can be the go especially with the 19. But for me semi-autos the go for new ground so far, never can one be totally sure but. Tis a powerful machine no doubt.

  • Thanks 1

Share this post


Link to post
Share on other sites

Thanks guys for all your comments & feedback. I must admit that due to our pretty insanely mild ground I do get a bit lazy in my settings. Once set & I am "happy" with them they just pretty much get left alone no matter where I detect. Our ground just does not change. Unless EMI kicks in or I do come across a bit of really soaked ground that has livened up the ground to unacceptable & unworkable levels. But that is not very often. Every time I crank up the detector I do an auto tune & ground balance over the ferrite ring. During the course of a days detecting as the sun gets higher & atmospheric conditions change & the ground may get a bit more lively due to warming up or the effects of all these combinations. I will re auto tune & ground balance over the ferrite whenever necessary. Sometimes it may be fairly often or maybe only on the initial start up for the day. Here are the settings my Zed is on most of the time & is right now. High Yield/Normal, Volume 8 using JP's B&Z Booster,  Sensitivity 18, Threshold 27, Threshold pitch 53, Volume limit 12, Ground smoothing off, Ground balance Auto mode, Audio smoothing low. I did think the Audio smoothing was off...but it hasn't been.

Thanks JP for your advice. I will play around with Manual & Semi Auto GB over my Auto GB & Audio smoothing off to see how it pans out. As I said...I get lazy. If it ain't broke & things seem to be working for me I tend not to try & "fix" it. I know our mentally mild ground plays a big part. I just don't appreciate the hard time you guys can have in your hot mineralized soils. Guess that is a blessing for me & how lucky I am. Cheers guys, thanks again.

Best of luck out there

JW :smile: 

  • Like 1

Share this post


Link to post
Share on other sites

JW,

  If I'm understanding this, running in Auto, automatically adjusts ferrite for you, no use for ferrite ring. Only in semi, or manual.

Share this post


Link to post
Share on other sites

I don't think that is correct, Dave....

the ferrite is needed with all modes...IF, I have understood Jonathan Porter correctly.

  • Like 1

Share this post


Link to post
Share on other sites
On 5/15/2018 at 5:24 AM, kiwijw said:

While the target was still in the ground undisturbed by my retrieval the signal was always there, did not fade or balance out. Still very faint due to the size, but on moving the target have lost the signal completely. Nothing, nada....having to use the either the GB2 or the GM 1000, depending which one I grab, to find the target & finally retrieve it. The signal has always been a tiny bit of gold that the Zed picked up on initially but once moved was lost. I put this down to the "halo" effect & not balancing the signal out by being in Auto GB. Like I said, while the target was undisturbed in the ground the signal was always there no matter how many times I swept over it. Not until it moved was it gone. Anybody have their own thoughts on this? Thanks.

Hey JW. I`ve always put this down to when you move the target you change what the detector sees.  Maybe when it was undisturbed the detector could see a bigger or smaller cross sectional area.  Most of the time when this happens, I find if I move the dirt around that came out of the hole I can re locate it.   I`ve also found when chasing those sub sub grammers that I can no longer hear, turning Target Volume up to max helps re locate them. I generally run a pretty low Target Volume.  Dave

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By klunker
      I just couldn't figure it out. The old Jeep mysteriously started running much smoother and quieter and became much more stable. I would also say that it's performance somehow increased by 30% or perhaps even 40%. In fact i was so impressed i decided I would invest some time into cleaning it up a bit. As I was mucking out the interior ( forgotten rock samples, sticks and leaves, old sandwich wrappers with sandwiches, dropped nuggets and such) I found Sourdough Scott's missing ferrite ring. I took it out and put it where Scott could pick it up and now the Jeep is back to it's usual squeaky, whinny, worbally self.
       Mystery solved.
       

    • By phrunt
      I always wondered if there was even gold around where the X-coil manufacturer lives, I didn't know much about Russian gold or if Russia even had much gold.
      Here is a video broken into parts of the Russian manufacturer showing the different capabilities of the 17x12" X-Coil between the Standard GPZ14” Minelab coil being used near high voltage power lines in Russia.
      It's good to see he is a prospector.
      Sorry about the quality of some of the parts. 
      It's a deep hole he has to dig to get it, nice soft soil though... that'd make life easier than using a jackhammer 🙂
       
    • By Emmanuel
      Hello fellow prospectors,
      I recently acquired a Minelab GPZ 7000 and I am looking for a fellow prospector wanting to search for gold with me in Southern California. As a former FBI agent, I have learned it is better to have two people when exploring unknown places... I have been using a Minelab CTX 3030 and I am ready for something new i.e. gold prospecting. I live in Long Beach but  I also have a home in the Lake Arrowhead area (San Bernardino County). I believe some areas are worth prospecting in San Bernardino County. Having said that, I am willing to travel. Reach out if you are interested. ads4350@gmail.com
    • By jasong
      I was going to post this in one of the X Coil threads, but it might be of interest to everyone.
      I bought a replacement ferrite ring since I left my ML ferrite in Arizona. It's one of the Doc's ferrites with the white backside (off Ebay), I did not realize they were not ML ferrites when I bought it. The OEM Minelab ferrites have a black backside.
      It would not balance on the X Coils at all and actually sounded like a screaming target (I didn't try the Z14) so I reported that to the coil manufacturer. He responded that the white backed aftermarket rings are not the same as the ML rings. So, as I normally do, I checked for myself, bought an authentic ML ring, and he was right.
      They are the same size, but the Doc's ring is 10 grams heavier (something I noticed immediately but did not have a ML ring to compare to until recently). It is also more magnetic. The Doc's ring is also conductive whereas the ML ring is non-conductive - the Doc's ring was reading about 38 ohms from side to side whereas the ML ring read infinity. And after I sanded the backs to get a fresh surface to check resistances on I noticed the ML ring looks dull and black as a ferrite should, but the Doc's ring looks shiny and metallic, like iron.
      So, clearly there are differences between the two rings. Thought people might like to know even if you are just using the stock coil, as I'm not sure how this affects the ground balance, but someone could be running suboptimally using this ring.

    • By Jin
      I often see others using a high sensitivity setting of 16 - 20 on the 7000. Is there really much of an advantage doing this? I used to think maxing out my 4500 gave me some kind of advantage over the poor suckers who ran factory presets or slightly higher, now im not so convinced. 
      Today i tested out my new 10" and 20" X-coils and tried many different combinations of settings to see what would suite me best. I did most of my testing with the 20" coil on a 2 gram bit of gold. I dug a skinny trench 200mm (nearly 8 inches) in some reasonably hot ground and placed my 2 gram bit in the bottom. High yield/Difficult were the better settings. (Ferrite and ground balanced, Semi auto ground balance,  Ground/audio smoothing off,  volume 8 (using a booster),  threshold 27,  threshold pitch 63,  volume limit 7)
      First i tried a high sensitivity and the target signal popped out nice and loud. Then I started detecting the surrounding area and felt there was so much other ground noises going on that the quieter signals may be masked. Eventually I found my sweet spot where the detector was quiet as a mouse and i had no problems hearing a slight change in the threshold no matter how small it was. This was at a sensitivity of only 3.
      I then went back over the 2 gram bit and it still gave a great response using sensitivity of 3 (although slightly less than when the sensitivity was a lot higher).
      When i started detecting and raising the sensitivity up around 6 -8 a lot more ground noise came in. Now im used to ground noise as i used to use my gpx in Normal timings most of the time. But after reading how the zed is a different beast and not to drive it to hard i decided to try less aggressive settings to see if less is infact more. Obviously im new to the zed and have much to learn so will continue trying different things until i get my head around things. 
        
    • By phrunt
      Here is a recent video of a couple of dudes testing out their massive range of Nugget Finder coils against the GPZ 7000 on targets they've dug into the ground in Western Australia's red dirt.  I found it quite an interesting video and shows how close a lot of coils are in performance.
      I notice he doesn't appear to scrub the GPZ on the ground as much as the others, not sure the reason for that, maybe he doesn't want to damage such an expensive coil ?
      By the time he's got to the GPZ all the ground scrubbing has probably made it a shallower target.
×
×
  • Create New...