Importance of Coil in Gold Detectors

Importance of Coil in Gold Detectors

Coils play a very important role in determining the effectivity and performance range of the gold detectors. It is very important that he buyers must choose the coil which is most suitable to their specific purpose or at least possesses the options to alter because if a specific coil is not able to perform in their circumstance, the gold detector would completely go to waste as the required gold items will not be detected or will be ignored. Here are some factors determining the importance of coil in gold detectors:

Coil manufacturing

There are many brands of manufacturers who are only operating in the area if producing coils of various sizes, designs, and technologies for different models of gold detectors. Some examples of coil only manufacturers include Coil Tech, Nugget Finder, Kamra, Nel. etc. Most of the quality coils are manufactured in the United States of America and Australia.

Coil Weight

The if the coil size is less, it will weigh less and if the buyer chooses a bigger coil size, it will weigh the machine down. And that will cause trouble to handle the swinging motions of the gold detector in the field. If the coil technology is varied, it will have no significant impact on the weight of the coil as it is mostly just manipulated by the amount of material in hardware. 


Waterproofing options are available for coils only, which makes it cost-effective for the gold detectors which are only required to work in the slightly watery ground at the surface level only. But if the buyer requires a fully weatherproof instrument, then it will be available as well.

Options for Upgrade

If the treasure hunter wants to explore a new situation which could not be tested with one particular type of coil, an option is available to change the coil to the required size, called upgrading or downgrading the coil. For that purpose, a new gold detector will not be required but only changing the coil will significantly affect the operations of a gold detector. 

Purpose determines Type of Coil

Your mission and vision about the purpose of gold prospecting must be clear in terms of knowing the type of soil to be explored, the depths required to be covered underground and what would be the size of gold objects to be found, etc. Because this will determine what type and size of the coil are required for the buyer. 

Know Your Coil

  • Swing Speed

As detectors are based on motion-induced technology i is required to continuously swing the coil like a pendulum’s motion. But this speed of swinging can also vary depending upon the model of the gold detector. 

  • Ground Distance

One more important factor to determine the effectivity of the coil is its distance from the ground. In most of the cases, the appropriate distance to be maintained from a coil to the ground is usually about 1 inch. 

  • Discipline

The integrity of the coil is to be maintained on the surface of by ground by making sure sufficient distance is kept such that it does not damage the coil by hitting any obstacles in the way during the swinging etc. 

Sizes in Coils

  1. Small Coils

They start from 5 inches and have a maximum size of 8 inches. In addition they are preferred for high mineralized soil areas. Where possible trashy metallic objects buried underground. The area coverage is negative because of the smaller size. It takes extra time and more swings to cover a limited amount of space.

  1. Medium Coils

These coils lie in the range 8-11 inches in diameter and are the highly recommended type of detector. Coils being in the mid-range affordability and coverage wise. These are work at their best in highly mineralized soils. 

  1. Large Coils

These coils are relatively large including 11 inches, 15 inches, 16 inches, 18 inches, 32 inches, 22 inches, 25 inches, or above. They have relatively low sensitivity and ignore very small objects. Very poor performance in terms of pinpointing, but depth is very good as well as coverage time is fast. Pulse Induction technology, size increases then the effectivity of the coil increases as compared to the ones with VLF technology.   

Angle of Coil

Importance of Coil in Gold Detectors the coil must be parallel to the ground at the angle of 180 degrees . Do not operate the coil’s swinging motions imitating a pendulum, i.e. to and for motions around an axis. If the gold detectors are very close to the ground, then their depth becomes compromised as the ground balance weakens which results in a noisier detector. 


[The Ultimate Guide] 6 Categories of Gold Detectors

For the ease of setting up a huge array of gold detector based products, besides categorizing them based on the levels at which they perform e.g. beginner, intermediate, advanced, deep seeking and professional etc. there is one more way. This list is according to the usage requirements of the buyer whether they would prefer to have one for gold nuggets only, one for coins and relics upto the most latest type showing data in 3D outputs. Take a look at the list to determine what are the six categories of gold detectors based on their mode of utility.   

  1.  Gold Detectors For Gold Nuggets

The gold nuggets are small metallic objects which can widely vary in shape and form as well as weight but can be considered the smallest detectable objects by gold detectors. The detectors which are equipped for gold nuggets are usually smaller in size and lighter in weight, with a small coil which is able to detect minute objects underground. The depth is very low and price point is also very basic. 

  1.  Gold Detectors For Coins and Relics

The gold detectors specializing in coins and relics are comparitively more heavier and have intermediate sized coils so they can detect bigger objects easily. That is the reason why some of them ignore very small objects. The depth is not very low because the coil size is increased and they are relatively more pricier than gold detectors for nuggets. 

  1.  Gold Detectors For Deep Seeking Purposes

When the buyers require something which can only be looked into with more advanced equipment having high depth possibilities, then deep seeking purposes are conveyed and such detectors are recommended. They are very heavy and a single person cannot carry it themselves. The depth is increased and many vital functions like ground balance, digital display etc. is present. 

  1.  Multipurpose Gold Detectors 

The gold detectors which are equipped to find small to large objects under varying depths all at the same time are called multipurpose detectors. They have several options to switch to and from in different cases as well as various interchangeable hardware attachment options are also present. 

  1.  Waterproof or Underwater Gold Detectors

The detectors which are specially designed to work in extreme weather conditions like when it is raining outside or when the users would like to check the presence of gold items under the surface of water. These type of detectors come in three variation, one the most basic form is when only the coil is waterproofed. The second one is where the hole detector including the coil, shaft and control unit is made waterproof or also known as weather proof. Last is the one which can be completely immersed below the water and it will not damage the machine or its detection functionality, these are underwater gold detectors.

  1.  3D Professional Gold Detectors

The Gold detectors which are well equipped with the most precise and best quality data output generation are 3D professional gold detectors. They have either a built in backlit digital display or can be connected to external devices through third party software which then helps generate various types of data in form of very intuitive and engaging 3D graphs. 

Matel and Gold Detector

Difference between Gold and Metal Detectors


Purpose Gold detectors have the sole purpose of detecting gold objects buried underground, distinguishing them from the other metallic compounds, or completely ignoring them, because they are not precious.  Metal detectors have the purpose of detecting the presence of metallic objects buried in a medium whether it is ground, water, or otherwise to ensure it can be extracted or taken out of the system successfully.
Frequency Range Gold detectors are specifically designed to work with higher frequencies so that they will only respond to dense and precious metals with precision, and not ignore very close to surface gold nuggets.  Metal detectors are very versatile and depending upon the user requirement and size, they can work on several frequencies and the users have the flexibility to choose a suitable one.
Uses Gold detectors are a very specific type of metal detection instrument that is used for the purpose of finding treasures in form of gold coins, gold nuggets or relics statues, and antiques below ground, underwater, or for other multiple purposes.  Metal detectors are used for all purposes where the metal is required to be separated from nonmetal items for example for security purposes in walk-through gates, in the construction industry, in the retail sector, for physical research, in production of sensitive equipment, etc.
Depth Because of the nature of gold detectors working on a higher frequency, it is very difficult for them to work on very great depths in the ground and mostly work very close to the surface of Earth starting from one inch to a few meters. Because of the versatile nature of metal detectors, they are designed to focus on all or some of the specific class of metal objects, so they can have varying depth options from very less to very high as the frequency of them varies. 
Discrimination In gold detectors, the feature of discrimination is very important because only one metal is the center of attention which is Gold, so it must be separated from other metals during the detection process to avoid wastage of any time.  Metal detectors can be equipped with discrimination or not depending upon how the buyer intends to use them. If they want to use it for the purpose of identifying metals from nonmetals then discrimination is not necessary. But if the user requires to classify the detected metal as a certain type e.g. iron copper, aluminum, or gold, then discrimination in metal detection becomes helpful.
Coil Size Coil size has a variety of options to choose from depending upon the user’s preference, as smaller coil sizes will be more helpful in detecting gold nuggets, but bigger coils will be more helpful to look for bigger gold items.  Coil technology is pretty much the same in both, and size has a variety of options to choose from as well. It also depends on the user’s preference, as smaller coil sizes will be more helpful in detecting smaller items like insecurity, but bigger coils will be more helpful to look for metallic items for example in construction or research. 
Major Difference Gold detectors are a type of metal detector where the emphasis of the detection technology is to classify whether the metal is gold or other nonprecious metals, to target and mine gold from below the surface of ground or water.  Metal Detectors are a major type of detection instrument that uses a specified set of technologies to classify different types of metals or metals in general in a specific location underground or underwater which is not visible otherwise. 


It can be safely concluded that every gold detector is a metal detector but every metal detector is not a gold detector.