Having said that, Lubbert advises that scaled-down coils have their employs, especially in wooded locations, since it’s easier to get involving twigs, grass, and weeds with a far more compact head. Larger coils can theoretically detect objects which might be deeper underground, However they’re also more susceptible to electromagnetic interference https://german-portal.de/finding-coins-relics-and-gold-with-precision-metal-detectors/