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Ground balancing and depth issue
Posted by: shelton7522
Date: July 29, 2017 03:20PM
I was work with my IIB unit yesterday. And get weird situation with Ground Calibration at 70 unit see coin shalower than with 65... If I change to 70 I will lost coin signal and depth in my ground conditions. This is normal?

Re: Ground balancing and depth issue
Posted by: filternozzle
Date: July 30, 2017 05:18PM
Yes. Once GB is up in the 70s it will start to knock out high conducting targets but will still get low conductors.



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Minelab GPX-5000 - Backup GPX-4500 with a very large selection of coils.

Re: Ground balancing and depth issue
Posted by: bigchuckinva
Date: July 30, 2017 05:41PM
The Best Depth on GB is 6.2/ 6.5 this where I set my GB with DMC2B over the years. One you go over 7.0 the soil may getting hot and loss depth and may turn down transmit power to lower to help stable/

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Re: Ground balancing and depth issue
Posted by: HanoverDigger
Date: July 30, 2017 07:26PM
I have mine set at 65. That setting works good in my soil.



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Re: Ground balancing and depth issue
Posted by: shelton7522
Date: July 31, 2017 01:18AM
Ok this look like the same. Above 70 I was lost coin depth dramatically. At 65 dynamic channel is not stable anymore in my conditions with disc. set on 15. Thank you.

Re: Ground balancing and depth issue
Posted by: filternozzle
Date: July 31, 2017 05:50PM
Quote
shelton7522
Ok this look like the same. Above 70 I was lost coin depth dramatically. At 65 dynamic channel is not stable anymore in my conditions with disc. set on 15. Thank you.

As mentioned by Bigchuckinva, try turning the Transmit Power down.



Happy Hunting
Minelab GPX-5000 - Backup GPX-4500 with a very large selection of coils.

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Re: Ground balancing and depth issue
Posted by: Harold,ILL.
Date: August 03, 2017 09:45AM
My soil is Mild,But it would be 68 slightly positive worked best in My Ground.



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