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Offline GoldDigger1950
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« Reply #80 on: December 01, 2009, 11:42:56 pm »
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Quote:Posted by xavier
PS I don?t have any intention of smacking any one in the face.


I'll accept that slap in the face as long as you do it with a nice cut of filet minion.

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It's all about that moment when metal that hasn't seen the light of day for generations frees itself from the soil and presents itself to me.
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Offline xavier
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« Reply #81 on: December 02, 2009, 12:24:44 am »
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 Grin Hi GD

Not a cheap skate are you  Grin


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Offline GoldDigger1950
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« Reply #82 on: December 02, 2009, 12:40:58 am »
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Quote:Posted by xavier
Grin Hi GD

Not a cheap skate are you  Grin



Not if you're buying the steak, mate!

Why so long unemployed? Is that because of your chosen field of skills?

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It's all about that moment when metal that hasn't seen the light of day for generations frees itself from the soil and presents itself to me.
Let's Talk Treasure!
Offline xavier
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« Reply #83 on: December 03, 2009, 09:24:41 am »
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Hi GD

I?m in the printing industry I do the installation of the big printing press like the one that you would see printing your local news paper the 30 and more ton jobs I do the moving and installation the thing is that I use to do most of my work in west Africa so I specialized in working with very little equipment and in very poor conditions and high heat I got most of my work from printers that bought second hand machines from France things were going OK till the economy went for a loop it?s been going for a loop since about 2002 ? 2003 but the economists wont admit it and that?s why today soooo many people are in %%@%^%

Best regards
Xavier PS got my frequency counter working


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Offline GoldDigger1950
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« Reply #84 on: December 03, 2009, 04:45:56 pm »
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Xavier, since you are unemployed and can use all the help you can get, here are a couple of pieces of information on coils, which seem to be your current focus.

There is a two dimensional plotting device known as the Smith Chart which will help you in many ways. It can determine the overall impedance of a coil, the inductance and the coil radiation pattern which translates into a field pattern for detector coils. It's not an easy thing to learn from documentation but couple these two documents which I will add now to the Downloads area with a Google tutorial search and you'll be an expert in no time at all.

Neither of these is a substitute for the ARRL handbook I mentioned earlier which is a teaching handbook but they will introduce you to the real meat of coil design and use. Both are intended for RF use but the same exact formulas and pattern generation apply. You may have to use a scale factor in the math to get the audio frequencies to fit on the chart. Charts can be downloaded then printed from a number of free sources and a full pad of them can be purchased from ham radio shops.

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It's all about that moment when metal that hasn't seen the light of day for generations frees itself from the soil and presents itself to me.
Let's Talk Treasure!
Offline xavier
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« Reply #85 on: December 03, 2009, 05:30:59 pm »
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Thanks GD

I'M ON IT RIGHT NOW

Regards Xavier will keep you posted

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Offline SvenS
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« Reply #86 on: January 30, 2010, 07:39:25 pm »
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I picked up my copy of the ARRL 2005 Handbook at my local library a number of years ago. It had a CD in the back of the book that contained the entire book as well as other goodies. I inserted the CD into my computer and saved the entire contents of the CD to my hard drive.

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FREE Classic & Vintage Detector Catalog Downloads
Plus a whole lot more. Build my own PI's.

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Offline macmacaval
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« Reply #87 on: October 21, 2010, 06:22:34 am »
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ok   see flc100

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