Long Range Detector Maker
Tenderfoot
- Joined
- Jan 25, 2014
- Messages
- 2
- Reaction score
- 1
- Golden Thread
- 0
- Location
- Houston, Texas
- Detector(s) used
- Differential GMR Gradiometer with two sensors for long range directional detection.
- Primary Interest:
- All Treasure Hunting
What Your Metal Detector Lacks
The problem with most metal detectors is that you are only looking at a small area, the surface area of your coil. You have to be right on top of your target to get a reflected signal to detect it. The problem is that the area that you are searching is large and your coil is relatively very small. You could spend all day searching an area the size of a football field and still miss stuff!
The answer is to have a device which doesn't relay on a reflected signal but detects subtle changes in the earth's magnetic field made by any metal nearby. By having two super sensitive GMR sensors separated by 8-10 feet you could view the different readings and know that there is metal in any given direction. Following that line eventually you would have identical readings on both sensors as you approach the target. Turning 90 degrees you would then balance the two readings by moving left or right. When balanced, you would be standing directly on top of your target! You may have walked 50-100 feet to stand directly on top of it in a matter of minutes.
Each sensor has its own meter measuring the magnetic field intensity. You could then spin in a circle looking for the greatest differences in readings to find you next target. Stop and follow that line to your next target. Efficient and quick, the answer to long range detection.
michael_chapala@yahoo.com
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