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Is there a sweet spot on the GM 1000 large coil that sounds off when over a target? Is it the tip, heel, left side or right side? With the coil being roughly 100 sq. inches where is the target in those sq. inches? Is it the same for the smaller coil? I seem to be getting hits all over the place. It's kinda a pain to have to search through 100 sq inches 3-4 inches deep.

Thanks ---------------------------------------

Jim

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Take a small piece of metal and find some ground with no other targets.

Put the metal on the ground where you can see it.

Swing coil over target and the 'sweet spot' should be in the center of the coil.

If it's a DD coil, which I believe it is,  the coil should have almost the same sensitivity from front to back in the middle of the coil.

If you are having problems, there might be more than one target.

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I dont use the 10" coil but I can say the 5" seems to have a sweet spot just back from center of the coil right in front of the shaft end. Sorry that probably doesnt help you much... :idunno:

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3 hours ago, North Pines Gold said:

Is there a sweet spot on the GM 1000 large coil that sounds off when over a target? Is it the tip, heel, left side or right side? With the coil being roughly 100 sq. inches where is the target in those sq. inches? Is it the same for the smaller coil? I seem to be getting hits all over the place. It's kinda a pain to have to search through 100 sq inches 3-4 inches deep.

Thanks ---------------------------------------

Jim

Every target I have located and dug with my GM 1000 when I pin pointed the target has been almost dead center of both coils just ahead of where the shaft attaches to the coil that is where I seem to get the loudest sound from the GM every time on both coils I do not use the small coil as much as the larger because I like more ground coverage 

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1 hour ago, Alwaysdirty said:

I dont use the 10" coil but I can say the 5" seems to have a sweet spot just back from center of the coil right in front of the shaft end. Sorry that probably doesnt help you much... :idunno:

Yup....same here.

Tom H.

 

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23 hours ago, azdigger said:

Bill told me that is was right in the middle of the coil.

Not middle of cool it is in the center of the sticker at front for me.... 5 inch pretty much the same. It is a DD coil thus the hotter area is front to back in coil center.

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  • 2 weeks later...

Efficient access to the sweet spot is just as important as knowing where it is.  Fortunately, the design of the small coil allows it to be "bent backwards" without stressing the wires or connections.  Thus, to access the sweet spot most effectively (and comfortably for me) I first lay my GM down in the "upright position" at my right side (I'm right handed) while kneeling on my right knee (this enables my body to provide stability to the "top heavy" GM).  Then I tilt the forward edge of the coil backwards until the bottom of the coil is facing upwards at about a 45 degree angle.  Then I take a scoop of material and settle the material against the left side of the scoop.  Passing the left part of the scoop back and forth across the dead center of the upward facing bottom of the coil is ergonomically comfortable for me and yields excellent signal  feedback.  I'm generally able to recover the target within no more than six or seven passes.

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