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Offline ABO AIHMTopic starter
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« on: March 22, 2009, 08:27:07 am »
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Hello all i hope to give mor information about a pi detector. what are the main difference between BFO and PI Metal Detector

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« Last Edit: March 22, 2009, 09:26:55 am by Christian »
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Offline slingshot
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« Reply #1 on: March 22, 2009, 11:11:41 am »
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The PI sends pulses into the ground and measures the rate of return to detect a target. A BFO sends an electromagnetic field into the ground and is more affected by ground minerals. The BFO, because of it's frequency, has more ferrous-nonferrous discrimination ability. You won't have to worry about hairpins, paper clips, and very small nails. So with one you have more depth, the other, more sanity. Grin

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« Reply #2 on: March 24, 2009, 04:08:29 am »
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why did they do away with the BFO  or are they still made ? if so who makes them ?

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Offline Paul A
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« Reply #3 on: March 24, 2009, 05:26:20 am »
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Quote:Posted by aussie
why did they do away with the BFO  or are they still made ? if so who makes them ?


Mostly because they drift like crazy and need constant retuning.
They don't go very deep either - probably 3-5 inches is the best you'll ever get on a coin.
And they LOVE foil,pulltabs,nails,tacks etc etc.....
As far as I'm aware,no one makes one anymore and probably not for at least 15 years...
 



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« Reply #4 on: March 24, 2009, 05:48:20 am »
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Good one Paul
                       I have enough trouble with pull tabs with the detector ive got dont wont to invite more trouble in the camp lol

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