Multi-frequency is not one standardized detector technology. Some machines let you choose one operating frequency at a time, while others process more than one frequency within the same search mode, and those two designs solve different problems. The practical value depends on the ground, the target mix, the search mode, and the quality of the … Read more
A single-frequency VLF detector remains a practical choice because it can combine useful target information, discrimination, manageable weight, and efficient battery use without forcing every beginner into a more complex system. It works by transmitting a continuous electromagnetic field, measuring the target’s returned response, and estimating what that response is likely to represent. The strength … Read more
The main hobby detector technologies are single-frequency VLF, pulse induction, and simultaneous multi-frequency, but none is automatically best. The useful choice depends on the target, soil, conductive salt, trash density, discrimination needs, physical fit, and budget. I treat the technology label as the beginning of the decision, not the answer. By the end, you should … Read more