Having said that, Lubbert advises that smaller coils have their uses, particularly in wooded areas, because it’s much easier to get involving twigs, grass, and weeds with a more compact head. Larger coils can theoretically detect objects which might be deeper underground, However they’re also extra prone to electromagnetic interference https://lifestylelens.de/why-every-treasure-hunter-needs-a-high-tech-metal-detector/