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Offline carlrodTopic starter
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« on: March 10, 2011, 07:33:54 am »
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 [hello]these, links, are, correct? for one-coil DD,PULSE-INDUCTION, so how are connected, the terminals of the 2 +2, the 2-coils?
 Detecting

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Offline GoldDigger1950
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« Reply #1 on: March 11, 2011, 04:17:49 pm »
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There is no way a single coil wrapped as a DD can function. Sorry.

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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 solmer
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« Reply #2 on: May 05, 2011, 06:46:40 am »
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sure, you need to build 2 coils (looking for the correct values) then you have to put in D shape.

good luck

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Good Luck and happy Finds !!!
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« Reply #3 on: May 05, 2011, 09:43:24 am »
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I've never seen them used but would like to see how the Omega coil would perform on a PI!

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Offline GoldDigger1950
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« Reply #4 on: June 09, 2011, 12:20:03 pm »
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Homefire, that's the configuration of all Garrett Deepseekers including the Groundhogs. I had mine X-Rayed once upon a time.

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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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« Reply #5 on: June 09, 2011, 12:28:10 pm »
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Yea, Minus the center coils is worth a try, Eaaa?

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Offline kabier2
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« Reply #6 on: June 21, 2011, 03:07:31 pm »
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the DD or the two D coil is mainly used for PI and the VLF type of detectors but manufactures of Md mix
the tow types of MD the PI and the two others in one MD for the purpose of getting good results of penetration and pin pointing, that is a guess , technically they can not be combined.
thanks to all

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Offline carlrodTopic starter
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« Reply #7 on: February 22, 2013, 06:20:06 am »
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HELP,THE MANUFACTURE,COIL DD!
HELLO, FRIENDS,. NEED OF A GOOD TECHNICIAN TO TEACH ME, THE MANUFACTURE, one ,coil DD,METAL DETECTOR (P.I).................. 30 inch S,, DIAMETER
1200 uH -16 R.(16R is the value of ONE COIL, or the total of two? 16 OHM?? OR 1,6 OHM??
HOW MANY ROUNDS OF YARN IN EACH COIL? THICKNESS OF THE SAME?
16 R 1R6 OR, IS THE SAME AMOUNT? OR NOT?
Very grateful!

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Offline GoldDigger1950
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« Reply #8 on: February 22, 2013, 08:14:19 am »
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Quote:Posted by carlrod
NEED OF A GOOD TECHNICIAN TO TEACH ME, THE MANUFACTURE, one ,coil DD,METAL DETECTOR (P.I)

There is no practical way to make a PI coil in a DD configuration. Because almost all PI detectors use a single coil, the two coils will conflict with each other and make a null area right in the center of the coil.

Why are you so focused on making a DD for a PI machine?

Posted on: February 22, 2013, 04:13:42 PM
Quote:Posted by carlrod
HOW MANY ROUNDS OF YARN IN EACH COIL?

As much as you want. Do you need to keep the coil warm?

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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 kabier2
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« Reply #9 on: February 22, 2013, 05:57:02 pm »
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hi for my early quote i mean the BI and the VLF for PI dear Carlord they only and only use single coil

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