Gold detectors are based on different kinds of technology.However they need to be chosen as per the depth of the target as well as keeping the coil size in mind.
The long range gold detectors are supposed to be gold search machines that can detect gold from deep into the soil where normal detectors cannot reach. Apparently these work on higher frequencies than other metal detectors.
These detectors are claimed to be based on resonance technology and it is also claimed that the electromagnetic signals emitted from these gold search machines receive a response signal if there is a “gold spot” deep below. However there are no evidences to support the claim.Read More
We have not had success with long range gold detectors in India. However we will be happy to sell you on only if you insist but will not be responsible for any results.