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jrbeatty

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  1. Yep. Easy one. Once the big gold ran low in the 90's, John sold his gold and specialised equipment, took the money and ran - :) Acting upon advice from friend Jim Stewart, he wisely invested it in tourist parks along Victoria's "Shipwreck coast" I haven't seen him for a couple of years but looking forward to catching up with him eventually -
  2. And that demonstrates why air tests are useless. Goldfield soils block signals.
  3. Pardon my spelling, Shouldn't type when tired, but that's when I have the time! My most recent understanding is that my friend Ilya and Alex (who I don't know) now control X Coils and market separately through their respective websites: Ilya's website: https://www.x-coils.net/ Alex's website: https://www.x-coils.com/ Of course this may have changed recently-
  4. I guess I spend most of my detecting time chasing gold on granite. Sometimes this gold is miles from the nearest reef or other existing source. As you no doubt know, this gold is left over from the granite pluton emplacement process. For others who may be interested, as the vast granite plutons once pushed their way upwards through the overlying metasediments, they mobilised gold formation in this rapidly thinning and eroding capping. Eventually this sediment capping is almost totally removed by erosion (except for occasional isolated metamorphic "roof pediments" as they are called, still sitting on the granite) What remains are occasional scattered remnants of "palaeochannels" which still carry the gold. Longbush and "Berlin" goldfield are good examples in Victoria.
  5. Jin: I'll be looking for different targets with the 26" The big loops were excellent at locating very large pieces (10 oz plus) at good depth (3/4 foot or more) I doubt they missed many, certainly not on the ground I've followed up on ever since. They were less sensitive to smaller pieces (ounce or less) at similar depth, and it's mainly these I will be targeting. The big CC's also punch deep but, due to the narrow field at depth, you need to be almost exactly over the target to hear it. The DOD (and monoloops) are far more forgiving in this respect. Out of interest, the last "Big Loop" I had experience with was used by John Hider Smith just before he retired from prospecting in the late 90's. It was 36" in diameter and spiral wound (way ahead of its time) Reg Wilson now owns this coil and it has been used successfully as a sled coil behind a quad. From memory, this was coupled to an SD 2200 box modified by Bruce Candy to target deep gold. This it did very successfully. At one point during a trip to WA, John called me over to listen to a "rumour" he had heard (a "pre" signal. Jim Stewart used to call these "gravity anomalies" and it's the one thing you must learn to hear if you don't want to walk over very deep gold. often it's just a faint repeatable instability in the signal) At the time I was having great success on deep gold in difficult ground with an SD 2200 detector coupled to a custom built 18" Coiltek DD. These coils were later released commercially. I heard nothing until about 4/6" had been removed, and it turned out to be a 2 oz piece down very close to 3 feet. Here's John at work in WA, filmed by me:
  6. - and an SDC as well Trent. One coil type does it all? Hopefully, I'm going to trial a 26" Z DOD spiral soon on deep, unpushed big gold ground,, just to compare results with the 22" Z CC.
  7. Thanks Gerry. Back home now. I ended up with a couple of ounces more than I left with, so covered costs at least: Largest piece was this stained 22 grammer in noisy tertiary ironstone conglomerate, a clear target signal: Find of the trip award goes to Reg Wilson for this 6 grammer, located at depth with a 4000 running "Normal" with "Bogene" settings: This 6 grammer from "Ravens Patch" Longbush near Moliagul was a personal favourite, especially as many consider the area well and truly "skun" Following the rains, mobilised soil salts rendered GPZ "Normal" timings all but unworkable, so my supply of sub grammers at depth dried up somewhat. At least digging deeper holes became a breeze, so not all bad :) Before that happened, I'm still blown away by actually hearing a half grammer at seven inches with a 22" coil, as well as a .1 grammer at 4"! Other people are now reporting similar extraordinary results using X CC's, with their favourite flogged patches also coming to life again: https://www.facebook.com/groups/3553656301344280
  8. Good to see you're now an x coil supporter JP. Since over 70% of my deeper finds so far made in "normal" timings could not even be heard in "difficult" I'll just continue as I am, since detecting a large area twice has little appeal. Of course I am sometimes forced to use "difficult" by ground conditions but do so reluctantly in the full knowledge that I'm leaving gold behind. On Tertiary gravels (which are usually very quiet) "normal" timings give maximum depth on all targets and are my favourite and most productive haunts. I stand by my test results which indicate CC coils leave little behind on these quiet soils on "normal" at depth. It's apparent we differ on this topic so it's pointless discussing it further. Go the CC coils!
  9. Jonathan: I'm not doubting that hole exists on "normal" setting with conventional GPZ DOD coils, but, as stated, our exhaustive tests with the big 22" GPZ X Coil concentric failed to reveal it. I understand you have access to the 17" X Coil concentric. Have you also tested it for holes? You may be in for a surprise :)
  10. Geoff: It's my understanding that the Z concentrics have twin active central windings (as do the DOD standard coils but a different layout) The coil internals are a trade secret. But an x ray would be revealing -
  11. Mitch: Reg is swinging a Detech 18" concentric on his GPX As the illustrations posted show, you have to be over the target to hear it (big surface junk excepted) Therefore it follows that only the two central windings receive, so my 22" coil is in reality only an 11" one (approx)
  12. No NE, I'm happy my settings got all that was available on the ground I have covered. I have done exhaustive tests on the Maryborough and Laanecoorie test sites with Tony Honey (who has had long experience with GPX concentrics) as well as undug gold targets in situ, I'm satisfied there are no "holes" in the settings I am using.
  13. JP: Sennheiser RS 160 cordless is a low latency high fidelity digital wifi system based on the "Kleer" chipset. Google for details. Now discontinued, but new units still appear on Gummie and Fleabay. Brilliant sound with volume control on both transmitter and headphones. I have several sets and can pair separate headphones when instructing people on detecting.
  14. No offence meant Jonathan, I have used "Jonno" as a term of endearment, not an insult. Not a "peep" from the detector using the Sennheiser (nor the GPX 5000 or the QED) They never distort (or drop out) and have a range of 20 meters or more, for those with extra long arms :) My reply was also a polite attempt to inform you and others about the in field operational characteristics of a coil few people are yet familiar with.
  15. Jonno: I can only call it as I observed it to be in the field. Naturally I spent a lot of time switching settings and swapping coils over undug gold targets in the ground, and at the Maryborough Coiltek test patch. Frequently, smaller deep pieces simply disappeared when switching from "normal" to "difficult", with the inevitable conclusion that "normal" coupled with "High Yield" was the best setting for that particular coil under most conditions - and that is the point here: Tune your detector to the particular coil used, rather than generalise about settings, soil conditions, saturation levels, conductivity etc. Norvic: The device mounted on the side of the detector is a Sennheiser cordless headphone transmitter. This is far superior to the obsolescent WM12 built in wireless system on the Z, and saves some battery time by switching both it and the GPS off.
  16. Not sure where to post this but Steve can move it if necessary: I've been wandering central Victoria for the last two weeks with this proto 22" Z X Coil concentric and results are impressive, to say the least. I've picked up deep bits missed by all the current detectors including GPX's, GPZ's (with standard coils) SDC's and QED's. I have personally walked over some of these bits: Some of the above were under 3KV power lines, which were worked two years ago for 1.5 ounces with QED's by Reg and myself. The Z concentric handled this well using full audio smoothing and picked up more pieces. This morning I tackled another well flogged patch and picked up an additional 5 grams: The day was hot and I ventured out once more and hit on this 11.8 grammer at depth. Took me half an hour to crowbar it out at only 14" The ground here is like concrete atm. In brief, this coil is a killer and has found gold (or missed deep targets) on all the well flogged areas I have worked so far. Settings: HY Normal, Max gain and no threshold (Bogenes) Same as what I always use on the 5000. "Difficult" is a small target killer on the Z. Many times I have changed to Difficult from Normal only to lose the target signal completely. I have detected below .1 of a gram at 4" using my settings. Not bad for a 22" coil. Audio smoothing only under power lines. Salt could be a problem so not looking forward to the heavy rain forecast here next week. On the other hand, digging will be much easier!
  17. I guess it's easier with a mobile campervan. Can drive off at a minute's notice. I find it cheaper to run the engine for 10 minutes (not hours?) This uses sod all fuel and recharges a partially discharged 100ah aux battery in no time, at least enough to get to the next day's sun. My hot water is also from the engine via a Glind heat exchanger, so I usually have a hot shower while recharging!
  18. I don't see the point in carrying a generator in a camper setup when your vehicle already has a 3-4 KVA one built in? I use a Redarc auto dual battery charging setup. If the flexible rooftop solar panels can't keep up (rare for me) then I fire up the diesel for a few minutes. Sounds like some of you are glamping, not camping. Next you'll tell me you're running ovens, TV's and microwaves! :)
  19. Jasong: To clarify, I'm referring to the number of TX windings in a DOD (1 only) so both heavy TX wires are marked correctly and connect at each end of said winding. The shielded black RX wire must service both receive windings which are possibly connected in series (according to my ohmmeter) I recently made an adaptor for my Z and closely followed the X Coils wiring diagram (which, incidentally, Simon drew up for them) The colour band on one of the 6000 black wires could merely be an identification code for assembly purposes. Perhaps all three are shielded and therefore RX wires for multiple windings. That's my pet theory for now!
  20. Jasong: DOD has two RX, not TX. To speculate further - and based on the GPZ super D coil colour wiring : Blue is the shield wire, clear (red) and grey are the transmit, then could there be three separate (switchable) receive windings? (black)
  21. Good for DP Forum to be held in high regard! Thanks to X Coils Ilya for that link. The things myself and others found interesting: There appears to be only the standard 5 wires coming out of that multi terminal coil input plug, and that extraordinary long row of Multiplexers/Demultiplexers. Perhaps several timings operating simultaneously? It has also been mentioned that the lack of white "goo" is because that's how the FCC require them to be presented. Stop chuckling Jonno! We're allowed to speculate! :)
  22. Not me Rick, I "borrowed" it from Gold Catcher. 👍
  23. I guess I'm too old to be still impressed by Minelab marketing hype such as the above. If all the accumulated "20% depth increase" claims for successive Minelab model releases over the years were accurate, I'd be using an excavator instead of a pick by now :) Clearly, the above chart also fails to take into account aftermarket coil usage. I'm with Rick. Wake me up when some real "boots on the ground" results from experienced, impartial testers are posted.
  24. The story of the gold rush to the Pilbara is best outlined in Professor Geoffery Blainey's brilliant book "The Rush That Never Ended" I would urge anyone interested in the entire history of gold exploration and discovery in Australia to buy a copy. I found it impossible to put down and read the entire book overnight - a bit seedy the next day but worth it!
  25. What a Puzzle! Only theory I would suggest is that close proximity to the quad's high voltage spark plug discharge could be initiating the detector start sequence by inductance. As Gerry suggests - pull the power plug.
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