Jump to content

GB_Amateur

Full Member
  • Posts

    5,842
  • Joined

  • Last visited

 Content Type 

Forums

Detector Prospector Home

Detector Database

Downloads

Everything posted by GB_Amateur

  1. Excellent start! Have you used HistoricAerials.com? That can help a lot with old parks. Even the USGS topos there (which typically go back much further in time than the photos) might show you some buildings that are no longer present -- e.g. maybe a concession stand, swimming pool change-rooms,... ?
  2. Or better yet, no mintmark and no stars around the obverse. (Ok, none of those are known to have been minted. But that's why you would want to find one. If authenticated, instant retirement!) Nice finds for both of you. That British button looks to be in decent shape. Your arid Western climate comes through again. I'm curious to know what that copper baseplate(?) is, Tom.
  3. I think you've hit the nail on the head. N/M has seemed a bit defensive with this release. They likely don't want units going into users' hands, having to trust those users to install updates before operating them (and failing to do that, making videos, complaining like spoiled children,... you know, the modus operandi in the social media and instant gratification age). If it weren't for XP's concurrent (more/less) release, I don't think their re-issuing of release dates, etc. would be quite as big of a deal. XP has really raised the bar in regards to releases, IMO, and that means for *all* manufacturers no matter how modest or lofty that m'fer is. (Pun intended. )
  4. In the database entry, the denomination is listed as 'penny'. Is this some kind of size specification, a typo, or ??
  5. The full article (which Steve linked) says it goes up for auction this week. It states 'Sunday' so I assume that means 23 January. BTW, I think that contraption shown in your post is patented so if you're going to modify it with soup and energy drink you might need to get permission.
  6. The *real* indication of its size is to see it in Gerry's mouth. Have you thought about measuring its specific gravity and then doing a calculation based upon a couple assumptions (host rock density and gold purity ==> gold alloy density)?
  7. Does the following maxim apply here? Necessity is the mother of invention. XP has proven they have some really smart innovators and engineers. I have a feeling they can solve this battery issue. For the sake of many, both here (on this forum) and elsewhere, I hope they will.
  8. My recollection is that the purpose of that section of the class, at least at the time I took it 3 years ago, was to show that every detector has native gold targets that it misses. There isn't (or wasn't at the time) a single detector sensitive to every native gold target.
  9. Well, the illustration in that snippet show the Beach 1 icon. I think that answers the question/concern! Thanks for the completeness -- I wasn't aware of this override as I never hunt saltwater beaches (and only seldom freshwater beaches). I recall Andy Sabisch's book (in which you are featured ?) where one of the several 'canned' user setups involved using Beach 1 on dry land. I have always been a bit suspicious that this would limit some things that the alternate modes (Parks and Fields) wouldn't. And when comparison videos are made where the comparer puts the Equinox in Beach mode in a dry land site to draw conclusions.... But from the manual I now think my suspicions may be unfounded.
  10. I've attached below the pertinent(?) part of the Equinox Instruction Manual ('user manual') that covers the two beach modes. I can't find there that Beach 1 has its transmit power reduced. (Beach 2, yes.) Chase, is this something you've uncovered or learned from a different source?
  11. In the middle of Day 2 of Gerry McMullen's and assitants' 3 day class, he brings over a dozen gold specimens of many shapes, sizes, and compositions. Then he takes the state-of-the-art detectors (including GPX, GPZ, and top IB/VLF's) to see which detectors sound off on which nuggets. Best part of the lecture section of the class (but obviously not close to the one-on-one in-field instruction that follows). Anyone who was paying attention during that demonstration won't be surprised at your experience with the GPX5k, nor the haul that Gerry and his expert assitants have made with that detector over the years.
  12. Are you referring to this Bounty Hunter detector that was released two years ago? That's an F19 with a change of color, stock coil, and brand -- nothing more. Coils are waterproof (as are all First Texas coils that fit the Gold Bug family) but not the control unit. A good detector, yes, IMO. But still a 'seasoned' 10 year old model inside.
  13. Nice haul and accompanying story and photos, as usual in your case, Simon. (And kudos to your wife and daughter.) Regarding the vegetation, how do you deal with it? Do you just let your coil glide along (think 'hovercraft') or do you force it down (which I think could be strenuous to your wrist in particular)? "Nobody gets it all." Nature always wins in that poker game.
  14. Despite some claims that the composition doesn't matter, it does to some of us. I appreciate the effort in measuring the CTX3030 responses but the Lincoln Cents never had equal amounts of tin and zinc. I have 6 of the 75 editions of Yeoman's Red Book, including the latest (2022) version and none of those six says the amount of tin and zinc were equal. Later this week I will measure the dTID response of 95% coppter Indian Heads and Lincolns with the ML Equinox and will report here. It will be ineresting to see if the response to the Lincolns (where there is known variation of tin and zinc content as I pointed out in the thread I linked earlier) will correlate to those contents. Needless to say you are welcome to use the numbers from that post -- they aren't mine but rather those of Q. David Bowers who coincidentally is currently the Research Editor of the Red Book and has been a contributing editor to more than 3/4 of all the editions of that excellent handbook.
  15. And I bet the excitement didn't end there. I'm curious to read how this compares to @Lunk's GB meteorite finds in terms of size. I was thinking most meteorites found there are pretty small pieces, not 6/7 of a lb. I assume a Radio Shack detector would have found this one, even if operated by a raw beginner. Does that mean you were in an unsearched (for gold) area or is this another case of people ignoring really large signals, thinking it must be trash?
  16. I've seen this argued previously but it is inconsistent with what I've read about the US Mint. The only 'out' is that they may have allowed the tin/zinc ratio to vary when purchasing bronze sheets, but the 95% is locked in. In the case the Lincolns the tin & zinc components were sprecified but I have been unable to find evidence for either side (consistent or variable composition) for the IHP's. A good read on how well compositions were able to be measured can be found with the early California Gold Rush assaying, such as Kagin's book shows (kind of expensive if you have to buy it -- check the library). Very early on (first 15 years or so, up to around 1810) the mintage of coins was less precise although I don't know if that imprecission spilled over to composition. After that it was quite consistent in general. Good idea to measure both dug coins and undug, and I'll do that as best I can based upon the dates I have access to.
  17. Wow, that ain't no dink! Fantastic find. Do you know when the meteoroid expired there over Gold Basin (spreading its offspring)? Four inches deep in the desert -- is the overburden primarily wind deposited or did you find this in a wash or ?? Regardless, that's quite a prize find.
  18. I'm on it next week! (With the ML Equinox since I have no CTX3030 -- more meaningful to the masses = po-folk, anyway. ?) Glad to hear someone reliable report on dTID changes from bronze coins that have been in the ground (compared to those never suffering that treatment). It's something I've suspected for copper alloy coins in general (so including Cu-Ni coins) but have yet to confirm.
  19. I didn't want to watch the full 15 minutes, not understanding the language (Russian)? Were there any Fast Fourier Transform (FFT) plots/traces/images shown (as ELNINO77 does)? Sometimes superposition of waves (aka 'interference) will show misleading/confusing info on an oscilloscope trace. (That may only be for simultaneously transmitted waves, though, and I don't know if multifrequency detectors do that or alternate.) Where is @EL NINO77when we need him??
  20. I assume when you say '0.25' in the tin and zinc columns you mean 0.025. I'm curious where you got these numbers. The tin&zinc numbers you show are inconsistent with what I've found for the Lincoln series. I'm also curious as to what coins you used to determine the CTX3030 dTID's -- were they dug coins or undug? I've been unable to find the tin&zinc breakdown for the bronze Indian Heads. See post I made a week or so ago for the Lincoln Cent compositions by year with referecnes, some of those detailed in earlier posts in that same thread:
  21. Good to know. I sometimes do similar when driving home from Colorado using Google maps (and HistoricAerials). So far it seems I've ended up in places that have been detected, but one in particular was producing a Wheat or two. Just wish I had more than a couple hours to hunt them.... It'll cost me an extra night in a hotel to accomodate that. Whatever you're doing, it's obviously the right thing for your area. I look forward to seeing what you find in 2022. And you've inspired me to find some old parks in out-of-the-way towns within a couple hours of me for some weekend jaunts! I think I'm lucky compared to many that my area and the entire state hasn't seen much detecting (relatively speaking) in the last several years. I know there are some unhunted public places here. But I'm also going to ask for some private permissions. Back to my younger days getting rejected by the lasses. At least the land owners won't laugh when they turn me down while thinking "and you thought you had a chance?!"
  22. Spectacular results for this late into the 50+ years that affordable, lightweight instruments for making such finds have existed. No doubt you have significant skills in the swinging, recognition, and recovery part of MD'ing but I suspect you are among the best at researching to uncover ununted or lightly hunted sites that contain old coins. Six silver halves and 25 silver quarters -- those don't come out of sites that have seen much (if any) detecting, at least not when you're using an IB/VLF. "Well done" doesn't do this justice. You mentioned a tone break (presumably dig / no dig break) at 18. I see a few silver content USA 5 centers (aka 'Warnicks'). Did those come in above 18 or were those incidental finds (e.g. from a multi-coin hole with higher conductive sidekicks)? Also, did you log the number of hours swinging, and if not will you give an estimate?
  23. That's an impressive collection of recovered IHP's! Looks like you need a lot of 186x and 187x, most of which are the scarcer in the series, but they are out there. I have a feeling you are going to fill in some more spots in that folder. Diverging a bit, is that a Whitman folder?
  24. And so has the following, but worth repeating: any action taken to avoid digging a signal will result in some good targets being left in the ground. Coins are the most consistent target because their size, shape, weight, and composition are carefully controlled during manufacture. Yet, even the dTID's of those can be affected by factors such as orientation, depth, ground mineralization, nearby metallic targets, and time spent 'stewing' for decades in the chemically reactive soil. Objects that are less uniform (gold rings being an excellent example) will have dTID's even more disparate. Native gold detecting is probably the opposite extreme to coin detecting when it comes to uniformity of desired target, and successful detectorists in that subfield are the most averse to using any target recovery avoidance. Sometimes even they are forced to, but they have to be dragged kicking and screaming into that abyss. ? Still, some (successful) jewelry detectorists give them a run for their money in their dislike of discrimination.
  25. Welcome, Billy! Enjoy your new detector and especially going detecting with your grandson.
×
×
  • Create New...