6 Best Metal Detector Coils

6 Best Metal Detector Coils

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Best Metal Detector Coils

Metal detecting can be hugely rewarding, particularly when you finally stumble across something valuable like gold, coins, ancient artifacts, or priceless relics. So how can you make finding these treasures even easier?

Search coils are vital components of metal detectors and can improve the possibility of finding something worthwhile. Every detector comes with a standard coil, but you can adapt or use additional coils for different purposes, one example being the depth of terrain you’re working on.

Smaller coils have a compact scanning area and better detection of smaller objects, due to the higher concentration of the magnetic field. Larger coils have a larger scanning area and deeper detection but can struggle with finding small items such as coins. When searching in areas with less litter, a larger coil is good for deeper treasures and covers a wider area.

Coils come in various shapes and sizes and are typically flat in construction. They usually consist of a:

  • Transmit coil
  • Receiver coil
  • A mono-coil that works as both the transmitter and receiver coil. 

There are also laws surrounding the use of metal detectors, of which you should be aware. These laws vary significantly between countries, states, counties, and public places. Make sure you check the rules in your area to avoid any trespassing.

We’ve explored customer reports and pulled recommendations from experienced detectorists. We also went the extra mile and used ‘Fakespot’ to weed out phony reviews so that we could come up with an accurate list of the six best metal detector coils. 

1. Teknetics 8in. Search Coil (Greek Series)

 

 

Teknetics 822

The Teknetics Greek Series Search Coil features the latest technology so that it can perform at its best. It is a standard, all-purpose search coil so it is suited to operate in a variety of conditions. This coil works to help you find smaller objects such as coins with ease, thanks to its high sensitivity.

For protection, this coil features an electro-statically charged shield. Additionally, there is even waterproof protection. With this protection in place, you can venture to beaches and muddy areas without worrying about damaging the equipment. More so if you have a metal detector unit with good waterproof protection as well. This can open a greater variety of search locations up to you so you have a higher chance of finding treasure.

Features:

  • 8in. coil size
  • Concentric search coil
  • Push-in connector
  • Round coil shape
  • Waterproof coil
  • Open coil build

What we love:

  • It doesn’t add much weight to the metal detector
  • Works with different brand detectors

We don’t like this as much:

  • It could handle trashy areas better


Teknetics 8″ Search Coil (Greek Series) – $99.00

Retail Price: $119.00
You Save: $20.00
from: Kellyco Metal Detectors

2. Nokta Makro IM28 DD Search Coil (Impact)

Nokta Makro 11 x 722

The Nokta Makro IM28 is a robust search coil meant for general metal detecting use. It has a distinctly elliptical shape and provides waterproof protection so you’re free to explore wet and dry areas in your treasure hunt adventure. Designed with Nokta Impact metal detectors in mind, this product works to detect individual targets from coins to jewelry and relics.

With this versatility, many people may find that this DD search coil can benefit them, no matter their skill level in metal detecting. It also comes with a coil cover and all the hardware you need for the job, so you don’t have to buy any additional parts.

Features:

  • 11in. x 7in. search coil
  • Double D type
  • Open coil build
  • Semi elliptical shape
  • Waterproof protection
  • Coil cover

What we love:

  • Features a high-quality, robust design
  • Offers ideal depth detection

We don’t like this as much:

  • As an all-purpose coil, it could use more work separating smaller targets


Nokta Makro 11 x 7″ IM28 Black Waterproof DD Search Coil (Impact) – $135.15

Retail Price: $159.00
You Save: $23.85
from: Kellyco Metal Detectors

3. Minelab DD Commander Search Coil (GPX / GP / SD)

Minelab 1122

The Minelab DD Commander Search Coil is a versatile coil that can fit Minelab GPX, GP, and SD metal detectors. It is designed to be ultra-sensitive. Besides that, this search coil works to blend depth and stability with this high sensitivity. Using this coil, you will have a very versatile detector, which you can put to use to find those hidden treasures.

Furthermore, this balanced blend gives the DD search coil a good deal of stability in all types of dry terrain. Feel free to take it to the backyard, through sandy beaches, or in a park! Another fun thing about this unit is that you can use it with Rx cancel features and Iron Reject features. By doing so, you can transform this search coil into a powerful relic coil to find even more treasure.

Features:

  • 11in. search coil
  • Round coil shape
  • Double D type
  • Non-waterproof
  • Solid coil build
  • Coil cover

What we love:

  • Great detection in littered/trashy areas
  • Compatible with multiple Minelab series metal detectors

We don’t like this as much:

  • Lacks any waterproof protection


Minelab 11″ DD Commander Search Coil (GPX / GP / SD) – $248.00

Retail Price: $325.00
You Save: $77.00
from: Kellyco Metal Detectors

4. JW Fishers Search Coil with Connector (Pulse 6x/8x)

JW Fishers 1622

The JW Fishers Search Coil for their Pulse 6X and 8X metal detectors features ideal waterproof protection. Combined with your waterproof unit, you can readily use this coil for all your underwater and diving adventures. It is a large-sized coil too, 16 inches in diameter. Because of its greater size, it can provide powerful detection for larger objects. These types of objects can include anchors, pipelines, and much more.

In fact, the JW Coil is a popular search coil that is used by law enforcement in the search for weapons thrown in the water. It also has strong sensitivity for quick detection of the items that you seek. Since this coil is for underwater use, it comes with the appropriate connector so you can quickly link it up with your metal detector and get to work.

Features:

  • 16in. search coil
  • Open coil build
  • Round shape
  • Waterproof protection
  • Underwater connector
  • Compatible with pulse detectors

What we love:

  • Can easily enhance the effectiveness of the Pulse 8x and 6x detectors
  • Offers a wide detection area

We don’t like this as much:

  • Not the best on land


JW Fishers 16″ Search Coil with Connector (Pulse 6X / 8X) – $395.00

from: Kellyco Metal Detectors

5. Garrett Mono Search Coil (ATX)

Garrett 822

The Garrett Mono Search Coil is a compact unit that boasts plenty of power for its size, allowing you to find exactly what you need. With an 8in. diameter, you can use this search coil in a variety of environments. It’s also easier to swing and capable of detecting smaller objects with ease. Thanks to its waterproof protection, you can take it to the beach, or around lakes to find more buried treasure.

Alongside its waterproof construction, the search coil is also designed to handle highly mineralized areas. This means that you can take the coil to saltwater beaches without damaging the unit. With the Mono coil winding, the coil can operate smoothly, even if you’re traversing the roughest of ground conditions. By using this coil, you can achieve pinpoint accuracy and target detection at all times.

Features:

  • 8in. search coil
  • Round coil shape
  • Mono
  • Waterproof protection
  • Open coil build
  • Compatible with pulse induction ATX detector

What we love:

  • Compact design makes it work well in tight spaces
  • Useful for detecting smaller objects in highly littered areas

We don’t like this as much:

  • Doesn’t cover a lot of ground so it might take longer to use


Garrett 8″ Mono Search Coil (ATX) – $450.46

Retail Price: $529.95
You Save: $79.49
from: Kellyco Metal Detectors

6. Coiltek Elite Camo Mono Search Coil (SD / GP / GPX)

Coiltek 1122

The Coiltek Elite Camo Mono Search Coil features an innovative winding system that helps to optimize the transmitter and receiver signals. Using this system, you can see an increase in depth and sensitivity, more so if you compare it to a similar coil that’s 11in. in diameter. The searching range of the unit is great too, as it features minimal touch sensitivity. This leads to smoother operation, making it very user-friendly.

With this coil, you also get consistent, high-quality performance as the coils are wound using high-grade LITZ. You shouldn’t experience any abnormal external interference as a consequence of this feature. With its strong stability, you may even notice an increase in Rx Gain. When in use, this coil can have good depth reading on smaller targets, while sending out wonderfully bright and sharp target signals, so you won’t miss a thing.

Features:

  • 11in. search coil
  • Solid coil build
  • Non-waterproof
  • Round shape
  • Mono type
  • Pinpoint capabilities

What we love:

  • Nice camouflage color that lets it stand out
  • The unit is simple to maneuver around different ground conditions

We don’t like this as much:

  • Might be too bulky for smaller spaces


Coiltek 11″ Elite Camo Mono Search Coil (SD / GP / GPX) – $368.00

Retail Price: $392.00
You Save: $24.00
from: Kellyco Metal Detectors

FAQs About Metal Detector Coils

How does an additional search coil aid your hunt?

You won’t get far in your treasure hunt without a high-quality search coil. Yes, most metal detectors come equipped with them, but purchasing an additional one can improve your productivity in the long run. Increasing performance is the primary reason why many people buy an extra search coil.

Extra search coils can also help you search in a variety of different environments, which could previously have been inaccessible. Besides that, an extra search coil can aid you in scanning a larger area of ground at one time, or allow you to hunt for longer periods. Either way, an extra coil is synonymous with better efficiency in the field, since you waste less time.

An additional search coil further comes in handy when you need to look for a specific type of item. For instance, large DD search coils work well at covering a lot more ground in a single swing and are better at detecting larger items. If your metal detector lacks this potential, you can upgrade it with a larger coil to compensate.

On the other hand, you can look into using a concentric search coil if you seek more sensitivity, along with having greater target depth. These features are particularly useful if you find yourself searching for small objects in particularly littered areas. 

What are the differences between Pulse Induction and VLF technology?

Metal detecting is not as simple as choosing a metal detector unit, adding a search coil, and then starting your adventure. There’s some interesting technology at work here, so it’s important to understand that which is utilized by your unit!

Pulse induction (PI) technology uses a single coil to act as both a transmitter and a receiver. Alternatively, they may also use multiple coils that work together as one unit. Hinted at by its name, PI sends short, powerful bursts of currents, known as pulses, straight through a coil of wire. These pulses generate a brief magnetic field, which then reverses polarity and collapses the moment the pulse ends. The result will be a sharp electrical spike.

As for VLF, this technology uses two coils to operate. One coil acts as the transmitter, while the other coil receives, therefore allowing the user to pick up on the targets in the ground. The coil that transmits creates a magnetic field to react to any metal objects around. Once it finds its target, a current forms. The receiver coil then takes that signal and amplifies it so that you can hear it through a speaker or your headphones if attached. Some metal detectors with VLF technology can also translate the received signal into a number if the current is strong enough for it.

What is ground mineralization?

When we’re talking about ground mineralization, we are talking about how magnetic the ground is. This isn’t to say that mineralized ground is radiating a magnetic field. However, it does indicate that the grains or the particles inside the ground soil will produce a magnetic response. It can also mean that they will be attracted to a magnet.

More specifically, highly mineralized soil will have similar characteristics to metal. There are various levels of ground mineralization too. For example, new soil is typically low in mineralization. You’ll usually find this type of soil around parks. Meanwhile, older soil that’s exposed longer to various surface conditions will have much higher mineralization.

This is something to always keep in mind while metal detecting because the minerals in the soil can lead to false signals. This is because the metal detector will focus on picking up the metal characteristics in the soil rather than any actual treasure.

As long as you’re hunting around the usual park-like areas, you shouldn’t encounter any problems. Going to the beach, however, can cause a mixture of mineral and salt issues that can create issues with false signals. So, it’s best to have a search coil and metal detector that can overcome this interference. Pulse Induction, in particular, does well at coping with mineralization.

Wrap Up

When you’re trying to determine the best metal detector search coil for you, the best one will ultimately depend on your specific situation more than anything else. What type of ground are you typically searching on? Are you searching in underwater areas? Is the area filled with high or low ground mineralization? Also, what is the depth or size of the target you’re hunting? Some search coils will work better in certain situations than others.

If you get a larger search coil, you will have a better chance of getting larger ground coverage and at greater depths. This will help you to discover those larger targets. At the same time, you must remember that you may be sacrificing high levels of sensitivity for this increase in the scanning area. This will likely prevent you from locating smaller targets.

When you look at it the other way, smaller search coils are excellent at target separation. They may be the best choice to handle those trashy areas so you can look through all the litter and find the treasure beneath. These smaller search coils can also work in tighter spaces so that you can explore different types of environments with ease. However, these coils might not have the greatest ground coverage, so your search time may be increased.

Knowing the ground conditions and what you’re looking for will help you determine the best metal detector coil for the job at hand. Some search coils do offer waterproof protection so that they can handle searching around beaches and lakes. Others are meant entirely for underwater use so they are excellent for those interested in diving.

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