Welcome to the Metal Detector Judge, the best metal detector reviews in 2017.
There are so many options and a wide range of features to choose from that the average buyer needs a bit of guidance when it comes to choosing the perfect metal detector.
That is why I have created Metal Detector Judge; a complete resource for those looking to buy metal detector’s for whatever purpose that might be. Here below you will find a list with the most popular and best rated metal detectors you can get where we have handpicked the top 10 metal detectors available in 2017. Every single one of those detectors have been getting some great reviews and ratings online in recent months and years so you can be assured of their quality.
On This Page!
- Best Metal Detector In 2017 Review
- 1. Bounty hunter Land Ranger Pro Metal Detector
- 2. Ace 350 Garrett Metal detector
- 3. Ace 250 Metal Detector
- 4. Garrett AT Pro Metal Detector All-Terrain 100
- 5. Bounty Hunter Time Ranger
- 6. White’s Coinmaster 800-0325
- 7. Bounty Hunter gold DIGGER
- 8. American Hawks Explorer 2 metal detector LCD
- 9. Ground EFX Swarm Series Digital GPS
- 10. Fisher F2 metal detector with pin-pointer
- 11. Ground EFX MC1 Youth Metal detector
- 12. Winbest sharp edition
- What to Look out For When Buying a Metal Detector?
- 2. The depth and the areas that the metal detector will cover
- 3. What is the correct metal detector for me?
- 4. The top Brands of metal detector
- Metal Detector User Guide
- 1. Definition
- 2. The Components of a Metal Detector
- 3. How Do Metal Detectors Work?
- 4. The Different types of Metal Detectors
- 4.1 The Very Low Frequency Metal Detectors
- 4.2 The Pulse Induction Metal Detectors
- 4.3 Beat Frequency Oscillation Metal Detectors
Best Metal Detector In 2017 Review
- Bounty Hunter Land Ranger
- Brand: Bounty Hunter
- Product Dimensions: 45 x 8 x 14 inches
- Item model number: PROLR
- Weight: 3 pounds
- Garrett Ace 350
- Brand: Garrett
- Product Dimensions: 21.5 x 14.6 x 5.7 inches
- Item model number: Ace 350
- Weight: 5.4 pounds
- Garrett Ace 250
- Brand: Garrett
- Product Dimensions: 6.5" x 9"
- Item model number: ACE 250
- Weight: 7 pounds shipping weight
- Garrett AT Pro
- Brand: Garrett
- Product Dimensions: 21.5 x 14.8 x 6.2 inches
- Item model number: AT Pro
- Weight: 5 pounds
1. Bounty hunter Land Ranger Pro Metal Detector
This is Bounty Hunter’s Pro in the Land Rover series for professionals that mostly use these detectors from day to day; especially at work. The Land Rover series are well known for their design and performance. The BH sports a V-break or a variable tone breakpoint that is adjustable such that a low tone goes off for low range targets. It also has a sensitivity level indicator that can be increased or decreased just like the audio volume on a scale of 1 to 10.
It includes the FeTone™ for iron and an adjustable iron audio which is undeniably cool. Besides that, also having 4 different tones for different objects can guide rather well. The display has a menu system with variable notching which allows the user to calibrate the search for treasure versus junk at the touch of a button. The ground grab and computerized ground balancing are other features that work to reduce ‘false alarms’ caused by minerals in the ground that tick off the signals. This technology works by calibrating its sensors to the soil in a particular locale so that it can tell apart the intrinsic minerals and metals in the soil from the ones that are being hunted for. It has an S shaped rod contains the control housing and the arm rest. The handle offers comfort and flexibility which will have you not putting it down.
It also has a pinpoint mode with an indicator of how deep the metal lies. Users really love the good display especially when it comes the 5 segment indicator of depth that ranges up to 10’’ deep. The LCD screen measures about 4 inches and identifies coins such as nickels, dimes and pennies. It also shows the battery level, which is a plus. The device runs on a 9 volt alkaline battery which when full, reflects three strength bars on the display. It comes in two variants of waterproof coils: the 8 and 11’. The latter is superior in comparison to the former in terms of strength and functionality as evidenced by better results in areas of higher levels of soil mineralization.
It is mainly made of Plastic which makes it lightweight at about 5 pounds. This makes the user comfortable working with it for long hours without feeling the weight. It also known to have a 5 year warranty on parts and labor which makes it every bit worth the money spent on it.
2. Ace 350 Garrett Metal detector
Garrett Ace, another giant in the business of providing high tech security devices sell this device at a high-level Price range of $200-$350. The 5 pound detector features better control of iron discrimination via an enhanced iron resolution technology in comparison to the 250 and 150 variants. This serves to improve separation of junk from targets. The machine sports a DD search coil for better detection and greater depths of searching at higher frequencies. At these frequencies, it can scan both small and large targets. The included headphones have the ability for volume control. In addition to all these, there are 5 search modes with discrimination patterns which can either be used as default or customized. This particular device comes with a 2 year warranty which is good news for any buyer.
They now have electronic pinpointing for precision and accuracy and indicators that show battery level and target depth which come in handy when it gets down to the real work. The finish is user-friendly with additions such as a padded and adjustable arm rest for comfort and a padded foam grip too. It comes with comprehensive user manual, an instructional DVD, an arm rest strap and a detector stand. This is a very low frequency (VLF) type of detector or induction balance. It detects depth based on magnetic strength and is limited by the field created by the object.
The device is good for recreational uses such as coin hunting, jewelry hunting or searching for relics and competitions.it is useful for beginners who do not want to operate complicated controls and can work well out in the lawn or beach or at your patio.
3. Ace 250 Metal Detector
Ace 250 from Garrett and manufactured by Petra industries Inc. It is an entry to mid-level device for virtually everyone. It is the most used MD in the US. It can suit beginners and enthusiasts as well. Coin hunters would find it suitable especially when learning the ropes on metal detection. It is mainly advertised for beginners and home utility. The price ranges from $200 to $250 which is not to cheap and not too expensive. This could be why it is so popular.
It has a 10” display for easy functionality and accuracy of sweeping and bears an electronic pinpoint feature and advanced sensitivity functions. A coin depth gauge allows easy retrieval of targets. It sports a graphic target identification with 12 element notch discrimination for making the search tailored to what exactly you want. It enlists the touch and go technology which implies easy setup and minimal start up time. This feature is recommended for fun and that is, relic hunting, beach hunting and coin shooting. It also has a headphone jack for folks who prefer hunting privately. There is no volume knob for adjusting audio volume though.
The ergonomics were not spared as the grip and rest are padded for comfort and durability. The search coil is waterproof for wading in shallow waters and is useful if the sensitivity settings are increased further. This device compares with similar devices such as: Ace Garrett 350, Teknetics Euro Tek Pro, Delta 4000 and Alpha 2000 as well as the Whites Coinmaster Pro and Fisher F2.
4. Garrett AT Pro Metal Detector All-Terrain 100
The Garrett-AT-Pro-Metal-Detector-All-Terrain-100-Water-Submersible-Land & water is a high quality metal detector geared towards professional and hobby treasure hunting and any form of metal detection. This device has been highly recommended for different treasure hunting activities such as jewelry hunting, cache hunting, competition events, ghost town hunting, fresh/beach water hunting, coin hunting, relic hunting, prospecting and many more. The reason why this device covers multiple activities is because it enjoys the latest Garrett technology which will give you the ability to hunt for relics, coins, caches, jewelry, and gold nuggets. You have the option of selecting between the two search modes – professional and standard, with improved audio features.
The Garrett AT Pro comes with a pro mode audio – tone roll audio and proportional audio features which will give the user a chance to hear audio of targets as it is in true all-metal mode. You will also get high –res iron discrimination technology. You can use the touch pad which gives you access to 40 levels which will help you in differentiating between targets and trash. This will come in hand when you are interested in precision hunting and prevent wastage of time when the device detects trash.
- Bounty Hunter TIMERANGER
- Brand: Bounty Hunter
- Product Dimensions: 28.5 x 10 x 6.2 inches
- Item model number: TIME
- Weight: 5 pounds
- White's Coinmaster
- Brand: White's Electronics
- Product Dimensions: 44 x 9.5 x 12 inches
- Item model number: 800-0325
- Weight: 12 inches
- Bounty Hunter Gold Digger
- Brand: Bounty Hunter
- Product Dimensions: 6 x 9 x 20.5 inches
- Item model number: GOLD-PL
- Weight: 0.2 ounces
- American Hawks Explorer II
- Brand: Gold Century
- Product Dimensions: 34 x 6 x 10 inches
- Item model number: AH3Y6Y20
- Weight: 6.4 pounds shipping
5. Bounty Hunter Time Ranger
This is the kind of machine that professional treasure hunters and enthusiasts would go out for. It is a reliable device from the renowned company BH and does not disappoint on the features. The coil it has is a D-tech which is fully submersible, and interchangeable. This implies possible sweeping in waters such as at a beach. There is an 8 inch search-coil and 4-inch Gold nugget one. The wider one is more sensitive as expected. It has a Ground trac feature that provides automatic balance to soil conditions.
It also has ground balance monitor and iron level discrimination. There is also a manual ground balance option for one to customize the detector to the specific sol in the locale. It has a large LCD with readout ability and touchpad control that displays the details of the target such as the depth, sensitivity and identifies it in audio and visual. The pad is programmable and very intuitive even for a novice. The audio tones can be discriminated thrice for audio and four times specifically for iron. It also has a sniff mode which eliminates unnecessary items/ ‘trash’ while detecting other metals. It also has built-in speakers and still comes with headphones. The latter come in handy for private searches.
6. White’s Coinmaster 800-0325
It is also known as the Coinmaster GT and is sold in the range of $160-$200. It is a mid-level device that is affordable and which is suitable for persons wishing to upgrade from entry-level MDs. It can also be used by new hobbyists. It is easy to set up and use thus. It has target identification to allow you to hear and see the targets you are sweeping over. The screen displays how deep you ought to dig in order to find the material you are searching for. It has a pin-point mode which can be alternated to all metal mode which defines the kind of search you want to conduct. It has a waterproof 9’’ spider coil that is suitable for beach exploration.
It does well in low to mid-level trash areas as the heavy trash areas make signal differentiation a bit difficult. The device rocks a 5-range discrimination for customized sweeps and easy target identification. It also has automatic ground tracking for calibrating searches to a particular locale bearing in mind the mineral content of the soil there. The device uses a pair of 9V alkaline batteries which are included in the purchase.
The MD weighs 2.5 pound therefore one does not have to fear his hands getting tired of detecting. It comes in a rugged water-resistant box which implies that the fun can be taken in to the waters. White’s is an American company that has been in operation since 1950. They also make accessories for the MDs that are quite a hit. Examples include their pin-pointers and headphones. A pin-pointer would be an ideal purchase for a novice as it would reduce the time it takes while out hunting. It makes it easier. It is reported to be good for coin detection especially as users report it to be quite a catch in finding nickel pieces and jewelry.
7. Bounty Hunter gold DIGGER
It is a bounty Hunter which is arguably the best at making MDs therefore implying that it is a good product. It is suitable for beginners and teenagers who do not mind the missing display screen. It can also be useful for locating missing wedding bands. This one is useful in the backyard, park or beach for searching up to gold coins.
It costs about $50-$140 which makes it a pocket-friendly device. Weighing about 3.5lbs, this submersible product is easy to set up and use. You’ll need to buy two 9-volt batteries in order to try them out though. It does not come with them. They come with a set of headphones which is a good thing because you have the option of privacy when searching for your coins. The discriminator dial will have to be set manually for persons who are a bit experienced and mind the noises. Others will just get along with it as it is. A major drawback as described, is the lacking display screen which many users agree that helps to avoid unnecessary digging up of trash. It has a one year warranty which is a plus.
8. American Hawks Explorer 2 metal detector LCD
This is a mid-range level device that is suitable for beginners and kids. It is not costly and therefore within the reach of most in terms of affordability. It also comes with a one year warranty, a carry bag and headphones which are pretty neat for the price. The quoted price range is between $120 and $250. It has three modes of operation: All metal which gives varying tones for ferrous and non-ferrous compounds, motion discrimination for the emission of differing tones even as the coil is moved about and auto-notch filter to assist in hunting for metals and telling you exactly what they are. It sports an LED screen for avoiding unnecessary digging and hunting.
It shows the depth of the object and the type. It is controlled by a micro-processor which displays the type of object found (LED). It has a waterproof coil for submersion in water and arm support which makes it without a doubt very comfortable and one can work for a couple hours using it with no qualms. It also has an automatic ground balance for determining the nature of soil in a place. This is particularly useful in defining ‘trash’ from ‘treasure’. It comes also with a free battery to kick-start your use of the machine. Its stem is made up of an aluminum form that is adjustable. This is the kind of device that is made with the user in mind.
- Ground EFX MX200E
- Brand: Wild Game Innovations
- Product Dimensions: 23.9 x 12.8 x 6.1 inches
- Item model number: Swarm Series MX 200E
- Weight: 5.8 pounds
- Fisher F2
- Brand: Fisher Scientific
- Product Dimensions: Not specified
- Item model number: F2
- Weight: 4 pounds
- Ground EFX MC1
- Brand: Ground EFX by WGI Innovations
- Product Dimensions: 26 x 5 x 8.8 inches
- Item model number: MC1
- Weight: 3.2 pounds
- Winbest Metal Detector
- Brand: Barska
- Product Dimensions: Not specified
- Item model number: BE11638-Parent
- Weight: N/A
9. Ground EFX Swarm Series Digital GPS
The Swarm goes for about $140 to $230. It uses an easy backlit digital interface that is large and boasts of ease of use. Who would not want that? It can tell apart 8 categories of metal and has adjustable discrimination. This is a plus especially since you don’t want to shovel up cans instead of coins. It offers 4 HD tones and 4 elimination modes for clarity, is GPS-enabled and allows saving and locating 10 different places, how cool is that? A 10’ waterproof coil for both dexterities are available implying that both left-handed and right-handed users are sorted. Its users however find it better-suited for land and not in water despite the fact that it is advertised as suitable for the water.
It uses 6AA batteries which are unfortunately not part of the shipment or purchase. It is made up of durable light weight polycarbonate intermixed with durable fiberglass and so it will be around with you for quite some time. This product is from Wild Game innovations, which make lots of pretty cool devices for kids and teenagers. It is an entry-level device for who novices and enthusiasts willing to explore metal detection as a hobby or for home use such as finding misplaced keys and bands. Its ease of use makes it an option for kids too. Similar MDs from our metal detector reviews include : Ace Garrett 150/250
10. Fisher F2 metal detector with pin-pointer
First of all, this MD has a pinpoint button included. It also has an 8 segment visual target identification and a jumbo-sized LCD which can increase sensitivity and discrimination. It also has the notching feature which can be turned on by the touch of a button. A 2 digit, numeric target value is displayed at the center of the LCD. The fast, sensitive target response dictates rejection of materials outside the chosen range. This is good for persons detecting at say a park. It also has an indicator for the battery level. A 4 tone-audio identification system is in place and it is clear and precise. It is also sharp. External audio jack for headphones are visible too. You should buy headphones with volume control as the device cannot do so. As for the depth, the stem and coil can detect anything on the 6-7’’ range although 9’’ is indicated as maximum in US quarters. Its ergonomic s-shaped handle added to the fact that it is very light make you want to stay hunting all day without tiring. The search coil is waterproof coil with three variants: 4 inch, 8 and 10 inches with increasing sensitivity as the radii increase too.
The body is well-built offering it a professional finish and solid outlook. Fisher made this F2 detector from a fresh line of new F series MDs. It is the first model. It is renowned for lightweight MDS with attractive designs. This particular MD costs between $200 and $320. The device is an entry level model that is well-suited for beginners and small-scale detectors who need it for recreational use. It can also be gifted to a teenage child as it has features that are safe and fun! It is not good for wet conditions and is therefore better suited for persons living in areas of dry climates or beaches in dry sand. Other devices like this one include: Ace 250, Teknetics Eurotek and Eurotek Pro, Whites coinmaster and Pro, Teknetics alpha 2000 and Teknetics Delta 4000.
11. Ground EFX MC1 Youth Metal detector
This is an entry level product for kids and adults wishing to just have fun from Wild Game innovations. It can be used in the water or on land and has enhanced durability to match the harshness of being toyed around by kids. It is very affordable at $50 – $60.
It uses a simple eliminator for detection of metals and a visual target indicator which makes it easy to determine what you are after and a battery ok test shows how long you can go about it. It can sweep and detect a maximum depth of 5” for coins and up to 24” for larger pieces of metal. The coil can be submersed up to 24” deep which beats every other MD on this list. The audio variability depends on signal strength.
The handle can be adjusted from 26” to 26” total length for reaching really deep areas. It uses two 9V alkaline batteries which are not part of the package. It compares favorably with others like the Bounty Hunter Junior, Bounty Hunter VLF2.1 and Bounty Hunter Gold Digger metal detectors.
12. Winbest sharp edition
It is from Barska, a company well-known for its line of sports optics and security products. It is suitable for entry level users through to expert levels. While entry level users and beginners might find the instructions a bit difficult; long-term MD users and professionals will really enjoy this product. It is a suitable option for persons who are looking for affordable MDs of a higher end of quality. It is sold at a range of $155-$450. It is also the best option for searching for jewelry from petty water. The MD features two modes of operation:
- Detection of any type of metal. This is non-selective
- The detection of metal with exclusion criteria. This is selective.
There are two knobs for adjusting sensitivity and discrimination hence an analog type of operation. The audio volume is adjustable and has a jack for external speakers which are not inclusive of the purchase. There is an LCD screen for display of sweeps and a low battery indicator. Speaking of those, it runs on 8AA alkaline batteries which you will have to purchase on the side as they are not part of the package. The search-coil is 8.5” and is waterproof in shallow waters. A carrying case is included to help you store it and carry it around. The stem is adjustable between 24” and 34” to improve comfort and maneuverability. The arm rest is similarly adjustable to suit personal requirements. Users find this product to be as advertised. It is also light and easy to use and set up. It is also highly versatile owing to the fact that it can be used to search for virtually any metal. It can find coins, silver and gold and other jewelry too.
Users put up cons about this product that the depth gauge does not work very well and that notch settings are not very intuitive. This can be a good pointer for enthusiast as they decide on which one to buy. It bears some Operating Tips which include:
- The search coil should not be swung in a pendulum fashion.
- Raising the search coil during sweeps will give false readings.
- Slow sweeps will give better results as rapid ones have altered targets
- The search coil should be placed parallel to the ground and moved side to side in an arc line of 3 inches only.
Following these instructions not only protects your device but makes working with it a lot easier. It can be pitched up against Fisher F4, Garrett Ace 250 and Teknetics Delta 4000.
What to Look out For When Buying a Metal Detector?
Most of us would prefer metal detectors which are best at differentiating between the various metals so as to end up with the one which can be best fit our needs. For the high end metal detectors you will have to dig deep into your pocket but if you are a beginner you may choose to play around with less sophisticated metal detectors. So what exactly should one look out for in a metal detector?
There are a number of factors that need to guide your decision and these are inclusive of;
2. The depth and the areas that the metal detector will cover
While it may seem desirable to pick out the one that will cover the most distance this can turn out to be quite frustrating. A wide covering one will make it hard for you to precisely locate which area you need to unearth to get the detected metal. A small covering metal detector will be suitable if you are a coin collector or when one is looking for a ring. But if you are out to search anything a wide covering MD will be suitable for you.
You need to have a clear cut decision on who will use the metal detector, the purpose it is intended to meet and how much you are willing to pay for one. It is advised that you get standard metal detectors and that are fairly priced. If you are going to use it for specific purposes such as searching for valuable items getting a sophisticated one will be prudent, but this may come at a higher fee. Most of the people who are intending to use the metal detectors for long prefer buying a mid to upper end metal detector.
The discrimination control is also a factor to consider in a Metal Detector;
If a metal detector has this feature it will be able to distinguish and ignore signals emanating from iron or silver papers and any rubbish items. But it will be able to detect gold, silver, any other non-ferrous metals as well as copper. The ability to ignore more items will be enabled by a higher control set.
Check to see whether the metal detector is a motion MD or a non-motion Metal Detector;
Motion metal detector are usually more expensive and they have a head that is kept moving while searching for target metals. Stoppage of the movement will disable detection of any target metal. This kind of metal detectors have an edge over the others as they enable one to engage in more sophisticated metal
Detecting and they are better in fine tuning. Additionally motion MD will have a deeper penetration and they discriminate more clearly.
3. What is the correct metal detector for me?
The answer to this question should be based on the needs of a single individual as opposed to a generalized view. The suitability of a specific metal detector to an individual will be determined by the needs at particular time and the area of exploration as well as the value of the metal being targeted. If it is the first time you are using a metal detector you may consider buying one which is in keeping with your spending habits.
The best detector for you will also be determined by the amount you have set aside for this and the amount of time you would wish to spend exploring using the metal detector. If you are the type who will be exploring for many hours in a day it will be best to buy a metal detector which has many electronic features. The number of features will determine the price at which a metal detector will be sold at, one with many features will be more costly.
The cost of accessory items for a specific MD also need to be put into consideration. Items that you may need to buy include headphones with volume controls, trowels, a coil cover, beach scoops as well as detector bags just to mention a few. Getting good headphones will enable you to get the best signal sound and you will save on the power of your battery, you can consider Depthmaster Audiophone II.
The area where you plan to use a MD will also determine the most suitable metal detector for you. There exists a wide range of metal detectors to be used for searching for coins, jewelry or relics. Others are employed in detecting precious metals in water and we have the ones which can have overlapping applications. The metal detector which appears to be popular among many is the general purpose metal detector which is able to detect coins, jewelry or any relics. This MD in most cases will not miss the features such as discrimination adjustment and sensitivity control. Make sure that you are buying a metal detector with waterproof coils.
There are specific features that have to be incorporated in MD that are to be used in specific situations. For instance those that are to be used at the shore need to have a meter display and it normally allows for fewer openings in the control box to ensure that is doesn’t leak. Those intended for prospecting precious metals like silver or gold lack discrimination and this will need manual ground balancing or alternatively ground tracking for better results. If you are on the lookout for a dual purpose prospecting/ coin shooting detector one should search for one with discrimination.
4. The top Brands of metal detector
The most popular metal detector brands consist of the following Fisher, Garrett, Bounty Hunter, Kellyco, Minelab, Teknetics, Tesoro, Titan, Viper and White.
The perfect Metal Detectors for kids consist mostly of the models made by Bounty Killer with the Bounty Hunter Junior treasure tracker being the most popular model. These MD can help children better appreciate science, history, navigation as well as help build and expand the child’s imagination.
After looking at the different types of metal detectors it is quite clear that there are myriad of them. For this reason you need to access your needs in order to select the most appropriate MD that will be suitable for you as an individual and it should also serve you better in a specific environment. For a beginner it would be wise to start off with a cheaper metal detector that has good reviews and then you can subsequently upgrade as you gain more experience in metal detecting.
Metal Detector User Guide
A metal detector refers to a portable electronic device with the ability to penetrate the ground magnetically in a bid to find traces of metals, coins and other precious metals. This could range from pieces of metals which were discarded a long time ago to valuable pieces of jewelry or coins and other treasures which might have been accidentally buried a long time ago. It mostly interests amateurs and professionals who might be in search of the earth’s hidden treasures in their adventures. Most metal detectors have the ability to penetrate wood, soil, sand as well as other non-metallic objects which makes it possible for them to be used to in wide range of areas.
2. The Components of a Metal Detector
The components of a basic metal detector include an electronic box and a battery at one end of it together with a handle or a brace for the operator’s hand. There is also a wire which is insulated and wrapped around a telescoping shaft as well as into a round plastic disk termed the coil.
The disk is designed in a way that makes it come off the shaft at an angle and this enables it to be parallel to the ground. The operator will grip on the electronic box and turn on the power. This device operates on the principle that by sweeping slowly the coil end over the ground, the metal detector will be able to pick up electric signals from the target metal.
If this is positive the user will automatically know that there exists some precious metal under the ground the device was on. Some metal detectors are designed in a way that enables them to discriminate between various metals so as to enable the user to conveniently pick which metals to dig up. The degree of discrimination and the decision to dig up will be determined by the person using the metal detector. Some people prefer to explore the less precious metals as a hobby, or for historical purposes, while some professionals will only dig up precious metals.
3. How Do Metal Detectors Work?
Metal detectors work by applying the principle of electromagnetics and the effects of this on conductive pieces of metal. The coil of a typical metal detector has two separate elements. One of them is a high-powered coil of metal referred to as the transmitter which uses the battery power in order to generate a penetrating magnetic field. As the electromagnetic force set up penetrates the ground, a material which is metallic in nature will become magnetized by it. The other element is a sensitive wire array termed as the receiver.
This component is designed in a way that enable it to react to any charged magnetic field that passes over it, and in this case this will be the newly magnetized metal elements. As soon as the receiver detects electromagnetic signature, a signal will be sent to the electronic box. A speaker will amplify this particular signal and a beep will be heard by the operator.
There exists microprocessors in the electronic box which can help in measuring the time interval between the charging and receiving, the phase shift. This will also help determine which metals may be present in area where a signal has emanated. This mechanism is the one which makes high-end metal detectors stand out as it enables them to only search for certain metals. The phase shifts for other metals rather than the desired one will be electronically squelched by the micro processing unit.
The metal detectors are also designed in a way that facilitates them to eliminate false positives which can be generated by the natural deposits of metal in the soil or sand itself. Most metal detectors will enable users to cancel out the background clutter by changing the sensitivity of the coil.
4. The Different types of Metal Detectors
All the metal detectors operate by same principle of sensing the magnetic waves caused by target metals. Some of the metal detectors are more sensitive as alluded to earlier on and thus also more expensive. There are three types of metal detectors; the very low frequency metal detectors, the pulse induction ones and the beat frequency oscillation metal detectors.
The most common type is the Very Low Frequency (VLF) under which most (if not all) of these detectors work. The others are the beat-frequency oscillator (BFO) in which there are two coils: the receiver and generator with the involvement of radio waves and the pulse induction (P.I) in which only one coil serves as both the receiver and transmitter of electric pulses. BFO is elementary and can be made at home as a DIY project. As you can imagine, its strength is not anything to write home about. The pulse induction is the crest of our current technology. Because of this, it is found in high-end devices only and has unmatched strength and capabilities.
4.1 The Very Low Frequency Metal Detectors
Shortened as the VLFs, these metal detectors are the ones which are used the most due to their ability to be employed in many uses. You can use this metal detector to detect different metals and it operates using two rounds of coil. The transmitter refers to the coil which is on the outside and this component emits low-frequency magnetic fields to the ground. A metal target under the ground will cause this field set up to be deflected. This metal detector also has an inside coil which functions as the receiver and it mainly acts by amplifying the magnetic field. Presence of signals will be indicated by an audio tone.
The VLF metal detector also has an electronic circuit that is employed in filtering the signal from the receiver. This helps in fine tuning the signals to enable the user to focus more on the desired range of the target metal. If you are a treasure hunter you can tune out signals from metals such as aluminum and focus on precious ones such as gold or silver.
4.2 The Pulse Induction Metal Detectors
This is a more specialized metal detector that is mainly used by treasure hunter who are searching for metals that are located deep beneath the ground. The large versions of these detectors are commonly used at security checkpoints for the purpose of detecting weapons.
This metal detector only uses one coil which will send out a magnetic field into the ground. Any metal target that is underground will then reflect this signal. After detection a PI unit quickly switches this to listen mode from the reflected signal. By employing this timed pulse method this metal detector is able to discriminate between different signals, the ones it has sent and the stray signals emanating from the surrounding environment. This fact makes this metal detectors more accurate and expensive compared to the rest.
4.3 Beat Frequency Oscillation Metal Detectors
The BFO metal detectors are the least complex and they are also inexpensive. This makes them quite a suitable bunch for beginners. Just like the VLF metal detectors this type also uses two separate wire coils for the detection of target metals. They have an oscillator which creates a constant signal at a set frequency and this is emitted by one of the coils. The second coil is able to detect any interference in the frequency generated which can be occasioned by metal objects and this will result into a changing audio tone.
There you have it, a complete guide to the best metal detectors with a complete list of metal detector reviews for you to make the choice easy on which MD to go for.