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Results 1681 - 1710 of 1917
I know the answer, I hope I can explain it...
The open loop of copper wire is not detected simply because there isn't anywhere near enough of it (less than 0.1 gram / 1 grain) and it is in wire form which is harder to detect than a solid pellet would.
Pinpointers like the Propointer detect metals' presence because the metal absorbs energy from the oscillator in the probe. Specifically
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Pimento
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Thomas Dankowski Metal Detecting Forum
Quote:"I don't understand why checks and credit payments will be rounded to the nearest dime too" - for the same reason they are rounded to the nearest whole cent today. If you wrote a check for 7 dollars and 8 1/2 cents, what would the recipient do? Presumably when the half-cent coin was withdrawn, all other transactions had to match.
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Pimento
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Thomas Dankowski Metal Detecting Forum
I'm amazed you US folk still have 1c coins, and the nickel should have been made of something cheaper a decade or two ago. And here in the U.K, our nearest equivalents to the 'dollar bill' (the ten shilling note and the pound note) were replaced by coins in 1968 and 1983. People soon get used to the change.
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Pimento
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Thomas Dankowski Metal Detecting Forum
This UK detectorist likes it on the Tek T2. The coins described are: 1806 penny = 30mm bronze; 1930 sixpence = 50%-silver dime-equivalent; Lizzy half-groat = small thin silver hammered coin (Elizabeth 1st two-pence).
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Pimento
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Thomas Dankowski Metal Detecting Forum
Coinseeker: Are you considering the standard T2 or the SE (higher spec) version?
Possum. I'm sure this has come up before - the Detech tests are done with the machines in Factory default settings, which are rather tame (for both machines) and presumably more-so for the F75. I suspect disc setting is the main reason for the differences.
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Pimento
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Thomas Dankowski Metal Detecting Forum
Go-rebels: thanks for the info, I think I'm going to stick with my standard F75 for now, but in the future I may change.
Badger: I did wonder if the ProPointer woud come up on this thread. Now it has, I may as well link to a couple of threads that discuss it in more detail:
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Pimento
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Thomas Dankowski Metal Detecting Forum
I agree that if manufacturers use an ID chip in their coils, they should make it public domain knowledge what the parameters are. Also, if no chip is fitted, the machine will still work, using default parameters, eg. using the stock coil response.
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Pimento
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Thomas Dankowski Metal Detecting Forum
Quote:" 'Tame Mode' is the F75 LTD run in CL mode at sensitivity=10"
I've just downloaded the manual for the LTD, and it seems the CL mode is a slow-sweep mode? So it's not what I was after, I would want normal F75 behaviour, just less chattery. If this mode was selected at power-on, then Tame DE, Tame JE (and the other 2 ) would be available. Tame JE might be rathe
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Pimento
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Thomas Dankowski Metal Detecting Forum
I think the damage to Kevin's thimble is more significant than the light patina. The problem is - correcting that damage without the risk of cracking and more damage really calls for annealing. And heating to 600 Centigrade will cause all sorts of patina changes, which will then need sorting out with acid pickles etc.
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Pimento
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Thomas Dankowski Metal Detecting Forum
In Europe, nearly all our old silver coins come up dark, and careful spit & foil cleaning can bring out the silver on the high-points, whilst leaving the background dark, giving the coin more visual appeal. Here's a typical example of an uncleaned medieval coin:
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Pimento
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Thomas Dankowski Metal Detecting Forum
"isn't there some home test one can do to verify if an article is real silver??"
Yes, do the 'spit & foil' on a small patch inside the thimble. If the reaction stinks of sulfur, you have your answer.
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Pimento
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Thomas Dankowski Metal Detecting Forum
Glad you like 'EZ', I thought it up just for the US guys. We don't use that expression in the U.K - it would be prononced ee-zedd here. Trouble is, the F75's '88' display would turn EZ into E2, ruining it. True about the AT-pro, I imagine the lower reactivity modes on the XP Deus would also be similar.
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Pimento
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Thomas Dankowski Metal Detecting Forum
Kevin, do you know the 'spit & foil' silver cleaning method? We use it often here in the U.K for improving older silver coins that have the gray patina. Take a small piece of aluminum kitchen foil, spit on it, and apply it to the silver item. Some VERY light rubbing may be used, too. You should get a chemical reaction - bubbling, heat, sulphur/sulfur/rotten-egg smell, and the grey p
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Pimento
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Thomas Dankowski Metal Detecting Forum
Another thing I often wish the F75 had was a 'tame' mode. Less fidgety and easier to use, sacrificing some sensitivity/speed etc in the interests of a more relaxing detecting session. This should be achievable, as all this aspect of the machine is determined by 'software'. Either activate this mode at power-on (eg. hold in the pinpoint trigger at turn-on) or possibly replace t
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Pimento
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Thomas Dankowski Metal Detecting Forum
"heated hand-grips" - I guess you would indeed need more than one hand-grip given the weight of it.
If it was made outside the USA, it wouldn't feature any reference to nickels, dimes, Sacagawea quarters etc etc, and it's depth gauge/gage would be in centimetres so that users worldwide would understand it. It wouldn't include a firearm on the accessory list either....
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Pimento
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Thomas Dankowski Metal Detecting Forum
*Tonebreak audio modes (with user-controllable audio pitch in 2-tone mode) on the Fisher F75
*Cordless headphones on just about any detector
*More water-resistance/proofing on all high-end machines
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Pimento
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Thomas Dankowski Metal Detecting Forum
It appears the video's have been removed, reasons unknown. But it may be related to comments from this archaeologist, who isn't a fan of detectorists:
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Pimento
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Thomas Dankowski Metal Detecting Forum
Re. drying, remove the battery cover and the battery.
While I would not recommend taking the thing to bits, for those who do, press the on/off switch so it is in the ON (plunger depressed) position before sliding out the circuit-board. Ditto for re-fitting.
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Pimento
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Thomas Dankowski Metal Detecting Forum
Another forum I use has a hilarious 'filter' in it's search function that ignores common words. Example :search for 'gold silver' produces the message: '"The following common words have been ignored in your search - gold silver". Fantastic.
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Pimento
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Thomas Dankowski Metal Detecting Forum
The nearest 'standard size' gold bar to a bar of soap is a 1kg (1000 gram) one, which are pretty small for a soap bar. If your typical ring contains 2 - 3 grams of gold, that's 400 rings. Here's a UK bullion dealers current 1kg bar stock, roughly 25000 US dollars.
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Pimento
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Thomas Dankowski Metal Detecting Forum
Unless you can find evidence that someone HAS got a different coil to work on the Troy, I suspect your search will fruitless.
However, if you are skillful with a soldering iron, I think there is a possibility to change the gain of the front-end amplifier circuit, and squeeze a bit more out of the largest coil you have..
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Pimento
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Thomas Dankowski Metal Detecting Forum
The F75 coil isn't suitable, that is about 0.7mH for the TX, plus it's nulled for 13KHz operation.
Here's a Geotech1 thread which discusses the Troy, it may enlighten you...
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Pimento
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Thomas Dankowski Metal Detecting Forum