Metal Detector Reviews
Frequently asked Questions
|
|
|
Find and compare,features, reviews,ratings,and prices on the best metal detectors based on consumers users. Which metal detector should I buy, Compare each of these metal detectors models like Garrett,Tesoro,Whites,Bounty Hunter,Minelab,Teknetics,Fisher.
Can one detector really do it all ?
Most detectors are designed to excel at one type of hunting or another but can be used for other types of hunting as well. For example, most gold prospecting machines use some form of higher gain in the circuitry to get better sensitivity to small gold nuggets in the ground. While this is a good thing for prospectors, coin hunters may find it annoying that their detectors are picking up every bit of a pulltab that has been run over with a lawnmower.
The art of metal detector design is the art of compromise. By accenting certain characteristics of any detector, you take away from other features. Any detector that does it all may not work as well for certain very specific treasure hunting. Talk to as many people as is possible and be realistic about your hunting needs. Finding a detector with the features that will best suit your hunting style is the most important choice you can make when deciding on a new detector.
What is the best metal detector ?
This is probably the #1 question that I get asked. Unfortunately, there is no one single answer. Each metal detectorist has specific needs that cannot be answered by one single detector. The easiest way to find the “best” detector is to evaluate your detecting style, your experience level, and the time that you will spend hunting. After taking all of these things into consideration, then you will be able to find a detector that fits your needs and your budget.
Are detectors with a lot of knobs better than those with just a few?
How much better is a $1000 detector than a $200 detector and in what ways?
The answers to these questions are connected, so I will try to answer them together. Generally speaking, the higher the price of a detector, the more features that it will have. More features translate into more knobs. The more features and/or knobs that a detector has, the more you are able to tune the detector to the type of hunting conditions that you are likely to encounter.
With that being said, the downside to a large number of features is that even though you are able to fine tune the detector to match the local conditions, there are also more ways of setting up the detector incorrectly. Setting up a machine “wrong” may result in a decrease in depth and sensitivity and your $1000 machine may be outdone by a $200 one.
Whites Coinmaster Gt Metal Detector
|
Tesoro Outlaw Metal Detector
|
Will metered detectors find coins deeper than non-metered?
The use of a meter on a detector is no longer any indication of its depth capabilities. When metered machines were the top-of-the-line machines, engineers matched the detectors with the best possible circuitry. With the advent of more cost effective digital signal processing and LCD displays, there are a number of units available that are inexpensive and have meters. While these detectors have acceptable depth, there are plenty of other machines that have better.
The main thing to remember is that a metered machine will give an accurate audio signal on a target much deeper than an accurate meter reading. Air tests are a good indication of the ability of any display-type detector, but once the target is in the ground, there are several variables that may come into play affecting the reading. The most common is the fact that pulltabs and gold rings fall into the same area based on the mixing of alloys. The orientation in the ground can also cause some confusion for the detector. If you choose to get a metered machine, dig any target that gives a good audio signal regardless of the meter reading. You may dig up more trash, but in the long run, you will find more desirable targets.
The main thing to remember is that a metered machine will give an accurate audio signal on a target much deeper than an accurate meter reading. Air tests are a good indication of the ability of any display-type detector, but once the target is in the ground, there are several variables that may come into play affecting the reading. The most common is the fact that pulltabs and gold rings fall into the same area based on the mixing of alloys. The orientation in the ground can also cause some confusion for the detector. If you choose to get a metered machine, dig any target that gives a good audio signal regardless of the meter reading. You may dig up more trash, but in the long run, you will find more desirable targets.
Is a crystal-controlled detector better than one that is not crystal-controlled?
Most manufacturers use crystal resonators in their machines because of the tight tolerances of the resonator. If the part is listed as 15.7 kHz, all parts will be exactly that frequency. The downside of these super tight tolerances is that the detectors are more likely to crosstalk with each other. In other words, the transmit and receive signals from two or more different machines will start interfering with each other.
Tesoro detectors use an LC or tank circuit to generate operating frequency. A capacitor and an inductor are paired together and create a naturally occurring efficient frequency. Variation in the capacitor and inductor cause slight variations in the operating frequency, which reduces the likelihood of crosstalk with other Tesoro machines. The variation is small enough that it does not affect the performance of the detector.
Are multi-frequency detectors better than single frequency types?
The tank circuit described above generates a sinusoidal or SINE wave form. The SINE wave is efficient to generate and has no harmonics.
Two frequency machines may combine a pair of SINE waves but are more likely to use a square wave. Multi-frequency machines almost always use a square wave or modified square wave. Square waves are rich in harmonics and take more battery power to generate. Harmonics generated by a square wave can be counted as individual frequencies and can be used to give more information as to target type and depth.
Why are there so many types of searchcoils?
There are two main types of searchcoils currently on the market—the concentric and the widescan. The concentric coil uses two round antennas, one inside the other. This coil is used on most detectors that are designed for coin,jewelry, and relic hunting. Concentric coils discriminate very well and pinpoint very easily due to the fact that the strongest signal is always in the center of the coil. Widescan coils use two D-shaped antennas that are placed back to back. Because of this configuration, they are also called “double-d” coils. The widescan coil is less affected by mineralization than the concentric, so it is generally used for gold prospecting or relic hunting in bad ground. Pinpointing is done with the heel or toe of the coil. After determining the type of coil that is best for your type of hunting, the next thing to consider is the size.
There are many different sizes of coils available and each one may fine tune your hunting but only if you get the correct size. Larger coils go deeper than smaller coils but only on larger targets. When using a large coil, you may lose sensitivity to small targets. A large coil is also more susceptible to masking. Masking happens in the Discriminate mode when a good target and junk target are both under the coil at the same time. If the targets are close enough together, the bad target will be discriminated out, and at the same time, the detector will not be able to pick up the good target. Masking is very common in junky playgrounds and in-and-around old house sites.
Smaller coils will concentrate the signal and make the detector more sensitive to the little targets. Unfortunately, smaller coils tend to lose depth when compared to their larger cousins. Being that these coils don’t have as wide a search pattern, they are also less likely to mask targets in trashy hunting situations.
Knowing where you are going to hunt and what you are hunting for will go a long way in helping you choose the right coil for your needs. A larger coil is needed when hunting in a clean area or when hunting for relics that may tend to be deeper. A small coil will help find the smaller targets such as gold nuggets or fine jewelry or can be used when coin & jewelry hunting extremely trashy sites.
There are many different sizes of coils available and each one may fine tune your hunting but only if you get the correct size. Larger coils go deeper than smaller coils but only on larger targets. When using a large coil, you may lose sensitivity to small targets. A large coil is also more susceptible to masking. Masking happens in the Discriminate mode when a good target and junk target are both under the coil at the same time. If the targets are close enough together, the bad target will be discriminated out, and at the same time, the detector will not be able to pick up the good target. Masking is very common in junky playgrounds and in-and-around old house sites.
Smaller coils will concentrate the signal and make the detector more sensitive to the little targets. Unfortunately, smaller coils tend to lose depth when compared to their larger cousins. Being that these coils don’t have as wide a search pattern, they are also less likely to mask targets in trashy hunting situations.
Knowing where you are going to hunt and what you are hunting for will go a long way in helping you choose the right coil for your needs. A larger coil is needed when hunting in a clean area or when hunting for relics that may tend to be deeper. A small coil will help find the smaller targets such as gold nuggets or fine jewelry or can be used when coin & jewelry hunting extremely trashy sites.
Double D Coil
|
Concentric coil
|
How deep do detectors go?
The answer to this question comes in two parts. The first part has to do with the detector circuitry and coil design. Environmental factors make up the second part of the answer.
Coil and circuitry design determine the overall ability of a detector to find targets. During the design phase of any detector, the engineers decide which features to include. The things that they consider are the type of hunting and who will be using it. A beginner’s model may not have the bells and whistles of the more professional models, but it will be easier to use. The more specific a detector’s design, the narrower set of features it will have. Some detectors designed for the ultimate depth will be hard for a beginner to use or may be too sensitive to use in trashy areas. Coil size will affect the depth of the detector but may not be suited for a particular type of hunting.
Environmental factors include just about everything except the detector and coil. Just a few of the things to take into consideration are the following: size and shape of the target, soil conditions, orientation of the target in the ground, content of the target, and any outside interference, such as electrical wires and radio or cell phone traffic. Weather conditions, such as rain-soaked ground or even an incoming thunderstorm, may also play a part in the depth and sensitivity of any detector.
With all that being said, an average detector using a stock coil in moderate ground should see the following targets with these ranges:
Target size Depth
Dime to nickel:4 to 8 inches
Quarter to half dollar:6 to 12 inches
Dollar to fruit jar lid:8 to 16 inches
Knowing your detector and using it properly are the two most important things that you can do to get the best depth and sensitivity out of any machine.
How do you set up and use a metal detector?
Whenever you are using a detector, comfort should be your primary goal. A detector that is easy and comfortable to use allows you to be in the field longer and to find more targets.
The shaft of the detector should be adjusted so that the searchcoil is just off the ground when your arm is in a natural and relaxed position. Your hand should be lightly on the grip and your elbow straight but not locked. This initial setup allows you to swing the detector with an easy shoulder movement. The coil should move in an approximate three foot arc in front of you. This is called the sweep. While sweeping your coil, try to avoid swinging from the elbow.
How do I know where to dig?
Once your detector beeps, you have to pinpoint your target. Pinpointing your target is a skill that is very important to practice and learn. The faster that you can locate your target, the more time you can spend searching for treasure. The technique for pinpointing varies depending on the type of coil that you are using. But the basics are the same.
“Xing” the target with your coil is the most common type of pinpointing. To “X” a target, run your coil over the target and make a mental note of where the audio signal is the loudest. Start with your normal right to left sweep to find the loudest audio signal. You should shorten your normal sweep down to about two to four inches. Once you have a good idea of where the target is, run the coil 90 degrees over the target to tighten up the pinpointing. You can do this one of two ways. First, you can physically step to the left or right of the target so that the coil goes over the object using a normal sweep but turned 90 degrees. Second, instead of stepping to the side and sweeping the coil left to right, you can push and pull the coil forward and backward over the target. Try using both methods to find the one that works best for you.
Pinpointing with a widescan or double-D coil: The widescan coil is slightly different from the concentric coil. By design, there is no center spot on the coil but a center strip of pinpointing area. The best pinpointing method is to use the very front of the coil or toe or the very rear portion or heel of the coil. Once you have gotten the signal, back the coil away from the target and use the toe of the coil to find the best signal. Pinpoint in the usual manner after that. To use the heel of the coil, push the coil past the target and use the end of the coil closest to you for the pinpointing.
 How to pinpoint a target |
|
How do I set my Sensitivity control to get maximum depth?
The Sensitivity control on most detectors is used to set the trigger point of any signal. The higher the Sensitivity setting, the smaller amount of signal a target needs to produce to have the detector give an audio signal. A very small or very deep target will not produce the amount of signal that a large or shallow target will. By increasing the sensitivity, the machine will give an audio signal to the smaller and deeper targets, but the detector may become too sensitive and start picking up ground effect or outside interference such as electrical lines or radio frequency noise.
The easiest way to set your Sensitivity is to turn it up until the machine starts to chatter. When the machine chatters, turn the Sensitivity control back until the chatter just goes away. This will give you the maximum sensitivity without any excess noise. If you can turn your Sensitivity control wide open without chatter, leave it there. Your machine will be operating at its maximum power capabilities.
What is ground balancing?
Ground balance is a form of discrimination that cancels out the effect of mineralization. Ground balancing is the physical act of finding the balance point where the effects of the ground are neither too positive nor too negative. When a detector is set with a positive ground balance, it will react to the mineralization matrix just like a target. When this happens, you will get an audio signal and targets in the ground will be masked by the mineralization. If a detector has been set up with a negative ground balance, the detector is discriminating out the ground and will go silent. A severe loss of depth and sensitivity are the results.
Finding the balance point between these two extremes is very important for the best operation of any machine. Most factory preset detectors are set just slightly positive. This will allow the user to work different types of soil conditions. A slight positive setting will also keep the detector from reading small ripples in the dirt and the hole you are digging to retrieve a target.
What is the difference between Preset, Manual, and Automatic Ground Balance?
All VLF-style metal detectors have some form of ground balance or mineral rejection. This keeps the detector working as close to its peak as possible and not be affected by mineral masking. When reading literature on all of the detectors, it can be confusing as to what the detector is actually doing.
Factory preset is the most common type of ground balance. It is used on most machines that are called “turn-on-and-go.” The ground balance is set internally by a technician at the factory. It will work fine for most coin, jewelry, and relic hunting needs almost anywhere in the world. Factory preset does not require the user to do anything to set the ground balance.
Manual ground balance is used on detectors designed to work in highly mineralized conditions. The ground balance is set by the user and is tuned to the local ground conditions. In bad ground, a manual ground balance can give you better depth and sensitivity than a factory preset. Unfortunately, if the ground balance is set incorrectly, a loss of depth and sensitivity will result. When working with a manual ground balance, constant attention is a must. If the ground conditions change, the detector must be retuned to the ground matrix to ensure the best operation of the machine. Manual ground balancing is a learned skill and must be practiced for best results.
While manual and preset ground balance are pretty clear, automatic ground balance causes some confusion. In the earlier days of metal detecting, any machine that was not a manual ground balance was referred to as an automatic ground balance. The term was used because the detectorist did not have to tune the machine; it was “automatic.” In the late 80s, several detectors were introduced that had microprocessor controlled ground balance. That is to say that the detector sensed the ground condition and reacted to change by adjusting an internal electronic potentiometer. True automatic ground balancing had arrived. Some manufacturers and dealers still use the automatic title for factory preset machines. If you have a question about whether or not any detector is truly an automatic ground balance or not, check the machine with a mineral sample. If the machine actively tunes to the sample, it is an automatic.
Factory preset is the most common type of ground balance. It is used on most machines that are called “turn-on-and-go.” The ground balance is set internally by a technician at the factory. It will work fine for most coin, jewelry, and relic hunting needs almost anywhere in the world. Factory preset does not require the user to do anything to set the ground balance.
Manual ground balance is used on detectors designed to work in highly mineralized conditions. The ground balance is set by the user and is tuned to the local ground conditions. In bad ground, a manual ground balance can give you better depth and sensitivity than a factory preset. Unfortunately, if the ground balance is set incorrectly, a loss of depth and sensitivity will result. When working with a manual ground balance, constant attention is a must. If the ground conditions change, the detector must be retuned to the ground matrix to ensure the best operation of the machine. Manual ground balancing is a learned skill and must be practiced for best results.
While manual and preset ground balance are pretty clear, automatic ground balance causes some confusion. In the earlier days of metal detecting, any machine that was not a manual ground balance was referred to as an automatic ground balance. The term was used because the detectorist did not have to tune the machine; it was “automatic.” In the late 80s, several detectors were introduced that had microprocessor controlled ground balance. That is to say that the detector sensed the ground condition and reacted to change by adjusting an internal electronic potentiometer. True automatic ground balancing had arrived. Some manufacturers and dealers still use the automatic title for factory preset machines. If you have a question about whether or not any detector is truly an automatic ground balance or not, check the machine with a mineral sample. If the machine actively tunes to the sample, it is an automatic.
What is Target ID and how does it work?
Target ID is a feature that will give the metal detectorist more information about the target while it is still in the ground. It cannot tell you exactly what the target is due to the many variables present in an unknown target. A short list of these variables are as follows: the metal content of the target, the size and shape of the target, the target’s orientation in the ground, the mineralization matrix of the ground itself, depth of the target, detector settings, and outside interference such as weather conditions, cell phone traffic, and electrical lines. All of these things can cause changes in the meter readings.
A basic detector works by transmitting a signal and receiving it back. This creates a field of electromagnetic flux lines around the coil. As metal passes through the field, it breaks or distorts the flux lines. A simple discrimination circuit measures the amount of distortion or shift and beeps or doesn’t beep based on the settings of the machine. During the design phase of any metered-style machine, the engineer measures the amount of shift that the most common targets cause and programs a microprocessor to respond with a meter reading for those types of shifts. The testing can include simple air tests, field tests in a controlled environment, such as a test garden, or even complex reports from several different field testers. But at some point, someone decides that a type of target shift represents a specific meter reading. While this information can give a detectorist a basis to dig or reject a target, it is in no way perfect.
Garrett Ace 150 Panel ID
|
Tesoro Cortes Panel ID
|
What is Notch Filter Discriminate and how does it work?
Notch discriminate differs quite a bit from regular discrimination. When using standard discrimination, the higher the knob is turned up, the more items that are discriminated out. As discussed before, when pulltabs are totally discriminated out, so are gold jewelry, rings, and nickels. Notch filter discriminate is designed to knock out some pulltabs and to keep the good targets in. It is virtually impossible to knock out all pulltabs and keep all gold jewelry. The reason is due to the conductivity of the targets in this range.
A notch discriminate works by filtering or discriminating a band of target signals out without affecting targets higher or lower than the band. This can be done either with an analog or digital circuit.
When using a notch filter, check the setup by doing numerous air tests before taking it out to the field. It is to your advantage to make sure you are aware of how your detector reacts to both good and junk targets. If your Notch can be adjusted, tune it to knock out the most common types of pulltabs in your area while keeping in the targets you wish to find. The initial setup can be a bit time consuming, but once it is done, you will be able to find less junk targets and keep the good finds.
Can iron be rejected and gold nuggets still be found?
Generally speaking, the best way to hunt for gold nuggets is to hunt in the All Metal mode. Nuggets, depending on their size, shape, purity, and orientation in the ground, will all create different signals. If you hunt in the Discriminate mode, some nuggets may be lost. The best way to get rid of iron is to search in the All Metal mode and then check the targets in the Discriminate mode. This allows you to search and find all of the possible gold nuggets. Checking the targets with the Discriminate mode turned up just high enough to knock out the small iron will give you much more information before you decide to dig. Practice this by doing air tests to see the best setting for your particular detector.
What is the best frequency for my type of hunting?
Contrary to popular belief, there is no one best frequency for any specific metal or metals. Any VLF-style detector that is operating between 3 and 30 kHz will do a fine job for any type of hunting that is done. This frequency range gives good depth, target separation, and is not overly affected by ground mineralization.
The ability to pick up good targets and separate trash from goodies is more due to the design of the detector, type of coils used, and several other engineering points that are brought up during the R&D phase. Comparing feature points of the detector model to the type of hunting you are planning to use it for will help you more than just comparing frequencies.
How much will using headphones increase the battery life?
Headphones take much less current to drive than the speaker in the detector. This fact by itself would tend to show that you will increase your battery life by using headphones. But you have to remember that even though the detector is not making any noises, the electronic circuits are still running. A detector that generates a square wave or has a display will be using more power than a detector that is using a sinusoidal wave and has no display. The increase in battery life will depend on your detector and hunting style.
Bounty Hunter Headphones
|
Garrett Headphones
|
This was a portion of General Detecting Questions of Tesoro metal detectors company USA
detectors,detector metal,detector de metal,detectors metal,metal detecting,metal detection
metal detectors,what is the best metal detector,the best metal detector,reviews,review
treasure hunting,metal detect,metal detector reviews,metal detector,which metal detector
Whites,Garrett,Minelab,Fisher,Bounty Hunter, Teknetics,Tesoro,XP,gold,best,ratings,compare
French Speaking metal detectors reviews ! To see !
http://www.revuedetection.com
List your business in a premium internet web directory for free This site is listed under Metal Detecting Directory
