Multi frequency machines by the nature of how they work also handle tough ground conditions with ease including wet beaches that can cause single frequency detectors to go mad! Since saltwater can amplify the signal from minerals found in sand, and throw off false signals as well, you will need to have some means of ignoring them. In this regard, pulse induction technology, like that used in the Minelab GPZ 7000 and GPX 5000, is the very best for beach and underwater gold detection. Fresh Water Mineralization is also important when it comes to ground balance. Like we discussed above, most gold detectors come equipped with automatic adjustment, but not all feature a manual option as well. Design the circuit: Design the circuit that will be used in the detector. It’s important to choose high-quality components that will provide accurate and reliable performance. In addition to the features already mentioned, some precision gold metal detectors may come with additional features such as:

If you are serious about metal detection, then you should invest in a detector with both of these ground balancing options. Don't worry; it's not as complicated as it sounds. Discrimination Well, for starters, most buried gold is quite small and generally weighs under one gram. It is also usually found in highly mineralized soil, which can cause heavy interference. I have another article that explains this further here on metal detector coil types and how they work. The answers to these questions will dictate what you should buy. In other words, no product is universally the best. Don't think that you have to spend a ton of money to find a good machine. There are actually plenty of great low-cost options.Finalize the design: Once all the features and settings are working correctly and the detector is proven to be reliable, finalize the design and prepare for production. Search coils: Different search coils have different characteristics and are better suited for different types of gold prospecting. Consider the size and shape of the coil that best suit your needs. Until then, gold hunters always went for the higher frequency machines as they were more sensitive to gold and in particular, small gold.

Pinpointing: Pinpointing is a feature that allows the user to more accurately locate the position of a target. This can be helpful for locating small gold nuggets or particles that are difficult to see. Ground Balance: Ground balance is the ability of a detector to cancel out the mineralization in the ground. A detector that can adjust to different ground mineralization is more versatile.As I eluded to earlier, all metal detectors can detect gold but some do it better than others. Gold is what is known as a “low conductor”. Conversely, silver and copper are known as “high conductors”. Overall, precision gold metal detector has many features and uses beyond gold prospecting. It can be a versatile tool for finding various types of metal objects in different environments. How to design a precision gold metal detector While PI detectors are best at ignoring trace metals in areas of high mineralization, they tend to either have terrible ability to discriminate between metals or no ability at all to separate the gold from everything else. If you're hunting for treasure, then yes, you need ground balance. Since gold is usually found in areas with high mineralization, this is needed to filter out iron and other metals. Without it, you'll spend less time detecting and more time digging in the ground only to find junk. Will a gold metal detector discriminate against junk metals?