Uncovering Treasures: A Comprehensive Guide to VLF Metal Detectors
VLF Metal Detectors: A Comprehensive Guide
If you’re interested in metal detecting, it’s important to understand the different types of machines available on the market. One popular option is a VLF (very low frequency) metal detector. In this post, we’ll explore what VLF detectors are and how they work.
What is a VLF Detector?
A VLF detector uses electromagnetic fields to detect metal objects underground. It sends out a magnetic field into the ground, then measures the response of that field when it encounters metal. The detector can determine both the type of metal and its depth based on these readings.
How do VLF Detectors Work?
As mentioned above, a VLF detector emits an electromagnetic field at a very low frequency (usually between 3kHz and 30kHz). When this field comes across any conductive material (such as metal), it creates another magnetic field around that object. This secondary magnetic field interacts with the original one emitted by the detector and produces an audible signal in the headphones or speaker.
The strength of this signal depends on several factors such as:
1) The type of metal
2) The size of the object
3) The depth at which it’s buried
4) Soil conditions
Most modern VLF detectors come with adjustable settings to account for these variables so you can fine-tune your machine for optimal performance under various circumstances.
Advantages of Using a VLF Detector
One advantage of using a VLF detector is that they’re lightweight and easy to use. They typically run off batteries so you don’t need to worry about finding an outlet or power source while out hunting.
Another benefit is their sensitivity towards smaller objects like coins and jewelry. Since most users want to find valuable items rather than just random junk, having good sensitivity can help increase your chances of success.
Finally, because they emit low frequencies, they tend to be more effective in highly mineralized soils compared to other types of detectors like pulse induction machines.
Disadvantages of Using a VLF Detector
One downside to using a VLF detector is that they can struggle with deep targets. If you’re looking for something buried deeper than 8-10 inches, you might want to consider a different type of machine.
Additionally, because they’re sensitive to small objects, VLF detectors can also pick up a lot of trash and iron signals. This means you’ll need to spend more time discriminating between good and bad signals.
Conclusion
Overall, VLF metal detectors are an excellent option for hunters who want a lightweight and easy-to-use machine that’s great at picking up smaller objects in mineralized soil conditions. While they may struggle with deeper targets and require some extra discrimination work, their sensitivity towards coins and jewelry make them an excellent choice for many hobbyists.