Best Metal Detector Frequency
What is the best metal detector frequency? To know this, you need to know what frequency is and the pros and cons of higher and lower frequencies. The operating frequency of metal detectors can vary widely. They usually fall in the range of 3 kHz to 100 kHz, but some can even be higher or lower than these.
But what does the frequency mean? What is the best frequency for a metal detector? Higher and lower frequencies each have their own advantages. Knowing what the advantages and disadvantages are and what you want to use your metal detector for will help you to decide what is best for you.
First, what does the frequency mean? Metal detector frequency is measured in kilohertz (kHz). A frequency of 8 kHz means that it transmits and receives 8,000 times per second. 16.3 kHz would be 16,300 per second. Lower frequencies also have wave lengths that are longer, and higher frequencies have wave lengths that are shorter.
Low frequency detectors are better at detecting highly conductive metals like silver. The longer waves are also better at penetrating the ground so they can lead to getting greater depth. But it is not as good at finding objects that are small or have low conductivity. This kind of metal detector will typically be in the range of about 5 kHz and below.
High frequency detectors are better at detecting objects with low conductivity like gold and iron. They are also better at detecting small objects making it easier to find things like small gold nuggets or small pieces of jewelry. But the higher the frequency, the less depth it can get and the more sensitive the metal detector is the mineralization in the ground. This could make the detector useless in some soil conditions if the frequency is too high. This kind of metal detector will typically be above about 15 kHz.
Most metal detectors fall somewhere in the middle of these extremes. This allows these general purpose metal detectors to be better all-around by getting most of the benefits of each extreme while minimizing the disadvantages of each. This type of metal detector will typically range from about 5 kHz to 15 kHz.
So what is the best metal detector frequency? Companies that make metal detectors have been trying different frequencies for years in order to find the best metal detector frequency. But the problem is that there is no “best” frequency. There are only ranges of frequencies that are better for different purposes. Knowing this will help you to choose a detector that works best for your needs.