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About Dubious

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  1. Sounds like your 4500 should do the trick. But, if those locomotives prove to be deeper than it can go, you can download an app and tape your iPhone to a broomstick, and use the phone's magnetometer chip to find them. https://www.komando.com/apps/3159/metal-detector-app
  2. Dubious

    Dumb Question

    I was analogizing VLF detectors to RF transmitters, where I learned as a kid to never key the transmitter unless the antenna or a dummy load was connected, or you would probably blow out the final stage of the transmitter. I just googled the issue and it still seems to be accepted as prudent practice today even with modern designs (with RF transmitters). https://www.eham.net/ehamforum/smf/index.php?topic=79031.0 It would depend on the design, but unless I knew for certain that it was safe to run a detector without a load, I just would not do it.
  3. Most certainly. In fact, that impact with the ground may not even have caused the largest shock wave. Often, meteorites explode in the atmosphere before impact. The 2013 Chelyabinsk meteorite was originally about 20 meters diameter; but it exploded miles up, leaving only relatively small pieces to impact the ground. Even with the atmosphere absorbing most of the energy (500 kilo tons TNT), the shock wave broke thousands of windows in nearby towns and threw people off their feet. On youtube, there are a bunch of interesting videos from dashcams and security cams. http://www.tulane.edu/~sanelson/Natural_Disasters/impacts.htm
  4. Dubious

    Feel Like Selling My Machine....

    That's exactly why I just acquired an SDC 2300. (BTW, highly recommend Gerry of Idaho as a great guy to contact for a deal on an almost-new gold machine--he has them all: SDC, GPX, GPZ, Nox, etc. http://gerrysdetectors.com/) I'm branching out from chasing silver coins to include some nugget hunting. If between my Equinox and SDC (VLF for where the ground is mild enough, PI for where it is mineralized), I can find a few small bits of gold, I'll be happy for now, and later can think about a GPX or GPZ. I figured that if I started out with a GPX, I'd probably get discouraged and quit before I found anything :)
  5. White's deserves credit for the new Goldmaster 24k, which by all accounts performs nicely against similar VLF gold machines from others. It just needs to evolve key models in other areas of its product line to keep up with a certain foreign competitor 🙂 I would suggest: 1) Move beyond the TDI to a deeper punching PI machine that can compete with the GPX. 2) From the V3i, develop a mid-priced, sleek modern multifrequency detector, like Minelab did with the ET/CTX-to-Equinox move.
  6. Dubious

    Alaska Just Had A 6.7 Quake

    I was a kid in Seattle at the time of the 1965 Pugent Sound Earthquake. I remember it seemed like a big wind was suddenly shaking everything. Because of the Alaska earthquake the year before, everyone was very anxious about earthquakes and ready to assume the worst. Although there wasn't much damage, several people died of heart attacks, I believe.
  7. How does the 600 compare on small gold in the Park 2 and Field 2 modes? Some have reported that the Equinox is quite sensitive to small gold in those modes (do wide open as otherwise Field 2 discriminates out some gold).
  8. I actually prefer AA or some other replaceable battery. It's easy to carry spares in case they run down in the field. And you can also use rechargeable types, so no real downside. With built-in lithium ion batteries, you risk trouble with airlines, and you can't carry spares (yes, I know, there are power packs you can carry, to recharge in the field, but a hassle). Note that Minelab's state-of-the-art SDC2300 uses ordinary C cells. I suppose everything is moving to sealed li-ion batteries because of size/weight factors, but there are definitely cons...
  9. Dubious

    Digging Multi Ounce Gold Nuggets With Garrett ATX

    I suspect it's a lot harder to find "patches" that productive today; but, Australia is a big place, so who knows?
  10. With the Goldmaster 24k, I believe the box under the arm cuff just houses the AA batteries. That's a reasonable way to do it, IMHO, for a machine that is not waterproof. The alternative would be to have the S-shaft hollow and thick enough at that point to incorporate a battery holder inside, with separate legs underneath for stability (like the Minelab Etrac and others). For a much more unsightly hanging box, look at the Minelab GPX 5000. It seems to sell all right in spite of it 🙂
  11. Dubious

    Dumb Question

    Not advisable to run a detector without a coil attached. Depending on the design, it could cause damage to the transmitter circuitry.
  12. Dubious

    SDC 2300 Scores 31 Ounce Gold Nugget

    The random element does intrigue me. I wonder if the nugget was found in an obscure location, or, in a place that's been pounded by PI machines endlessly, with everyone somehow missing it until now?
  13. Dubious

    Makro Gold Racer

    If you bought it as new, and it is used, you deserve a new unit. I've never used it, but I've heard good things about the Gold Racer, and it seems to represent very good value in a gold detector (VLF).
  14. Dubious

    Monster Head Phones

    Is that also true of the Equinox (stereo to mono adapter)? Wanting to be able to use the 1/4" headphones I use with the Etrac in a pinch (if my wireless earbuds die), I picked up an adapter someplace, but it doesn't seem to work.
  15. I'm glad Fisher has found a way to be successful with at least a good part of the operation still in the U.S. I also have nothing against Mexico, and am sure it is possible to find plenty of competent people there (but probably, just as here, not necessarily at the lowest possible price). But, I have to say I do think ordinary Americans (i.e., those who have to work for a living) have been sold out by a generation of successive administrations, all in the name of "globalization."