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Recent content by wyndham

  1. W

    Gold bug at the beach?

    Been years since I've been to the Carolina beaches and this fall I'll get a few days of detecting in. I have a Gold Bug with a stock coil waiting in the closet to get out and work a bit. Any advice on setting for the wet beach at low tide? I've thought about getting another detector for beach...
  2. W

    Surf dual field coil Q.

    Does anyone know if this coil can also be used by the new TDI PI that will be out soon? I'd heard of a coil like that for the TDI and wondered if it is the same, interchangeable or 2 diff critters. Later Wyndham
  3. W

    afterburner

    I have seen a mention of something Eric is working on for the GS5 series called an afterburner. Is it a tx boost for the GS5's and or could it be used on the Whites TDI. I realize this may be far to premature to even mention but you know gold fever does some strange things to people :crazy: BTW...
  4. W

    white surf pi pro coil weight???

    I may get a white's surf pi pro and am told it has a weighted coil. Is this a back breaker if you use it for beach and shallow water. Are there any lightweight 3rd part coils for this beeper??? Thanks for any help Wyndham
  5. W

    PI induction current direction question

    I understand that the TX pulse is an alternating current pulse and that this change induces the eddy current in the target that in turn produces the return magnetic field that the RX gets the target current from. This is my loose understanding. While following up several threads, I found a link...
  6. W

    colloidal iron, Eric???

    Well I have come upon an interesting experiment that I thought I would share and see if it sparks some interest. Taking a 29% solution of iron chloride and using 4ml add to 250 ml of boiling water makes a solution of colloidal iron. If one passes a magnetic field by a test tube with this...
  7. W

    Fire charred ground and the gs5 ??

    While browsing in another forum, someone mentioned that his ML 4000 got real goosey when he tried to ground balance over recent ground burned by forest fires. The charcoal was the problem because of the signal it gave off. I am wondering about the GS5 in a similar area. Does the GS5 do better or...
  8. W

    method to measure PI signal strength in ground

    I remember Wirechief asking once about the signal from a PI into the ground and how much the ground dampens the signal and how far the signal reaches, at least this is what I believe was being discussed some time ago on several forums. Hat if we were to make small coils of different # of wire...
  9. W

    gold Vs meteorite w/GS5b

    I hesitate asking this question, but I believe it is valid. Where would the GS5b place as a meteorite detector? If any of you were to look at Franconia meteorite field would you bring another detector? If you could afford one detector, would the GS5b fill the bill for both? I have a Gold Bug 1...
  10. W

    Diamagnetic property of gold

    A Question for Eric et al, I have read that gold is classified as a diamagnetic metal. I was wondering is this a factor in inducing the eddy current into a gold target and more so the resulting mag flux from the eddy current back to the RX coil? Could this play any part in either some nuggets...
  11. W

    Carbon fiber threads for coils

    It's spring, feels good not to have cold dark days greeting me for awhile. Anyway, I have been searching some of the properties of carbon fibers. I have found they can be conductive and a current can be induced into them. Could there be any benefit to making a coil from carbon fiber threads...
  12. W

    PI output & rx power?

    Tried a search for this but must not have worded it properly. When the PI transmits a pulse, what is the power that is going to the coil? and conversely what signal strength that comes back on the rx. I'm still trying to visualize the power going in & back. I realize the rx is weak. I would...
  13. W

    Eddy current strength?

    I am trying to learn a bit more about the way an eddy current works. I believe that I read here or somewhere that if a tx coil is passed over a target faster(as oposed to very slow) that it can induce a greater eddy current in the target. I may have this all wrong but the idea made me wonder...
  14. W

    A question on iron andground balance

    To the Folks out here that know more than I I have found a site that uses a sensor to measure GMR http://www.wsrcc.com/alison/uxopaper/demo.html Giant magnetoresistance. It would seem that this sensor would have a place in the design of a PI machine(fools rush in) There seem to be evidence...
  15. W

    signal noise and filters

    I read Eric's question on the amt of filtering that has to be done to get a clean signal on the PI. This is a bit off the wall but I'll stick my neck out and venture an idea. The white noise that we see when our televisions are on a non transmitting channel has been partially atributed to the...
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