For the modern detectorist, revisiting these PDFs is not just historical curiosity; it is a masterclass in signal processing, analog design, and the physics of eddy currents. The next time you swing a coil over a buried treasure, remember that the fundamental principles inside your machine were likely discussed, diagrammed, and perfected in a Geotech forum post by Overton or Moreland.
George Overton provided the raw, brilliant analog architecture. Carl Moreland provided the clarity, the debugging, and the documentation. Together, their work lives inside thousands of home-built detectors, converted PVC tubes, and custom sand scoops.
Introduction: Decoding the Search For the electronics hobbyist or the serious prospector, the phrase "inside the metal detector" conjures images of oscillator coils, phase shifters, and discriminator circuits. When you append the names George Overton and Carl Moreland to that phrase, you enter a niche but fascinating world of reverse engineering, open-source detector design, and technical documentation—much of which has been archived in PDF files circulating on forums like Geotech.
For the modern detectorist, revisiting these PDFs is not just historical curiosity; it is a masterclass in signal processing, analog design, and the physics of eddy currents. The next time you swing a coil over a buried treasure, remember that the fundamental principles inside your machine were likely discussed, diagrammed, and perfected in a Geotech forum post by Overton or Moreland.
George Overton provided the raw, brilliant analog architecture. Carl Moreland provided the clarity, the debugging, and the documentation. Together, their work lives inside thousands of home-built detectors, converted PVC tubes, and custom sand scoops. For the modern detectorist, revisiting these PDFs is
Introduction: Decoding the Search For the electronics hobbyist or the serious prospector, the phrase "inside the metal detector" conjures images of oscillator coils, phase shifters, and discriminator circuits. When you append the names George Overton and Carl Moreland to that phrase, you enter a niche but fascinating world of reverse engineering, open-source detector design, and technical documentation—much of which has been archived in PDF files circulating on forums like Geotech. Carl Moreland provided the clarity, the debugging, and
| Voltage/Frequency： | 1230V~50Hz/120V~60Hz |
| Input Power: | 1500W/9.5A |
| Blade Dia: | 210mm |
| No-load Speed: | 110-120V:5000rpm,220-240V:4500rpm |
| G.W./N.W.: | 12.5/11kgs |
| Packing Size: | 740x490x340mm/pc |
| 20'FCL: | 204pcs |
| 40'GP: | 432pcs |
| 40'HQ: | 504pcs |
| Cutting Capacity | |
| Miter x Bevel | Width x Height（mm） |
| 0° x 0° | 305 x 70 |
| 45°x 0° | 215 x 70 |
| 0° x 45° | 305 x 35 |
| 45°x 45° | 215x 35 |
