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Coil height is always something I stay aware of.

September 10, 2020 04:26PM avatar
I can grab one of my old TR's, TR-Disc. or a VLF/TR-Disc. and scrub the coil lightly on the ground and, in most situations, they will work OK. Maybe nto the best, but OK. When we progresses to all of these newer detectors starting about 25-30 years ago with higher gain, more sensitivity, and especially o larger-size coils, 'scrubbing technique' or even working the coil within a inch or so, can have a negative effect on detector performance. Especially in higher mineralized ground.

Most Operator / User manuals suggesting working a search coils about 1" off the ground to ±2" off the ground. That eliminates most of the issues of the mineralized ground warping the intense EMF near the coil, and also eliminates the double or multiple beeps when sweeping over and very close to a shallow target.

Again, we have for a smaller-size search coil to help reduce the amount of negative effect on the EMF, plus let us better handle working in and around trash, building rubble, brush, etc. We should be able to use a somewhat lower-level coil position than with the 'mid-big' 6X11 DD 'Viper' coil. It's working okay for average urban Coin Hunting, and could work for 'scouting' around for a potential location of prior activity. Then it's smaller-coil time.

Monte

"Your EYES ... the only 100% accurate form of Discrimination!"

Stinkwater Wells Trading Post
Metal Detector Evaluations and Product Reviews
monte@ahrps.org ... or ... monte@stinkwaterwells.com
503-481-8147
Detector Outfit: A selection of my favorite makes and models, with the best coils mounted, for the tasks I'll take on.
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Subject Author Views Posted

A Garrett Apex Video: 'Unerstanding Iron Masking and Target ID.'

Monte 144 September 10, 2020 09:32AM

Re: A Garrett Apex Video: 'Unerstanding Iron Masking and Target ID.'

Kickindirt 97 September 10, 2020 02:35PM

I just did another re-test of the Apex w/Viper on the Nai Board ... measured.

Monte 124 September 10, 2020 06:49PM

Re: I just did another re-test of the Apex w/Viper on the Nai Board ... measured.

Druid 108 September 10, 2020 08:32PM

Re: A Garrett Apex Video: 'Unerstanding Iron Masking and Target ID.'

diggindeep 102 September 10, 2020 04:59PM

Re: A Garrett Apex Video: 'Unerstanding Iron Masking and Target ID.'

diggindeep 103 September 10, 2020 12:42PM

Coil height is always something I stay aware of.

Monte 116 September 10, 2020 04:26PM

Re: Coil height is always something I stay aware of.

diggindeep 99 September 10, 2020 05:04PM

Re: Coil height is always something I stay aware of.

WM6 82 September 16, 2020 02:54PM

Re: Coil height is always something I stay aware of.

Druid 74 September 16, 2020 08:46PM



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