Terra 705 metal detector which coil is better.

The Minelab X-Terra 705 metal detector rightfully earned itself the reputation of one of the most balanced devices both in terms of capabilities and price. A handy and lightweight device with a good processor performance does nothing for itself with the task of finding old coins. But the realities of the present time are such that this task is becoming more and more difficult - almost all swag places have been thoroughly combed.

For this reason, many treasure hunters believe that, as standard, it no longer fully justifies itself.

Some search engines, in this case, consider the only right decision to change the device, others buy additional coils.
For those who are not so categorical and are not going to sell it, as well as for those who are tormented by doubts about what configuration to order a metal detector, we will tell you which coils are suitable for it, why they are good or bad.

Standard coil

The 705th is standardly equipped with a 10.5″DD 7.5kHz coil.

What does it mean:

10.5″ is the spool size in inches,
dd- design feature cable winding, in this case, soil scanning is carried out over the entire depth of detection of the coil,
7.5 kHz - target detection frequency

The manufacturer stopped his choice on such a configuration not by chance, the fact is that such parameters are averaged, which ultimately determines its versatility.

Here is a small field description.

The optimal size allows you to successfully walk both in the fields and in thin vegetation. The depth of detection is very decent. The middle frequency works well where there is a thick cushion of grass or where the coins lie quite deep.

It tolerates the sensitivity setting to the maximum well, does not respond with trills when hitting stones or stubble. It catches small objects quite well (the size of a Soviet penny), and sees large ones deep enough.
The separation of metals is clear.

Of the minuses, she is credited with poor visibility of very small and thin objects (for example, scales) and the passage of coins standing on the edge.

Recently, she began to dissatisfy many. All more or less good signals are selected, leaving those that are difficult to feel the device. To detect them, they acquire coils with other characteristics.

Despite some of its shortcomings, it still remains quite popular.

High frequency 10.5″ DD 18.75

This coil is similar in shape and size to the previous one. Its only, but at the same time important difference is its high frequency - 18.75 kHz. It allows you to scan the soil in more detail, thereby detecting small targets.

It is her that many treasure hunters consider as an alternative to the midrange. This is especially true in fairly sagging areas and where scales come across.

The existence of generally identical coils with different frequencies has generated a lot of controversy about which one is better.

When releasing these devices, the manufacturer clearly distinguishes them according to their purpose: high-frequency - for searching for small finds, standard - for deep targets and treasures.

But for the sake of objectivity, it is worth saying that in the fields the difference between them is sometimes difficult to assess. Many notice that significant differences in by and large and no. Unless the mid-frequency one is a little deeper (a couple of cm) catches coins, and 18.75 finds small coins a little more often.

ellipse

The DD coil is standard sized 10 inches and has the shape of an ellipse. It is produced with one frequency - 18.75 kHz. Designed to search for gold nuggets and small antiques.

The elongated shape and corresponding frequency quickly found their way among the search engines. It is most often bought to search for small coins, for walking on beaches, littered places and during summer grassland.

The search engines note that she has a number of advantages over her younger relatives, sniper coils. She sees them deeper, she has a larger search value and at the same time does not suffer from poor separation of metals.

Coil 6 inch

These coils in the digging environment were called snipers, due to their small size and characteristic work during the search for coins.

They are produced in two versions:

1) Mono 6″ at 7.5kHz.

2) DD 6″ 18.75kHz.

Although these coils are small and noticeably inferior in efficiency in the fields to conventional 10-inch and various “wheels”, they have no equal in places where, in principle, it is difficult to search.

I think many have attractive sites, but walking there with a metal detector is considered pointless. Often village fairs, inns or manors are a sad sight. In their place are huge dumps or dumps, moreover, abundantly overgrown with bushes, trees and grass. This is where snipers come in handy.

Their small area, which significantly reduces search efficiency, becomes an advantage here. They clearly pick up good signals among the metal debris, “do not go blind” like large coils, crawl between raspberry bushes and weeds, climb into every niche in basements and attics.

In addition to this, they are also lightweight and waterproof.

If you decide to purchase such a little thing, please be patient. Walking with such a thing is quite specific: you need to walk slowly, do the wiring slowly, constantly change settings, especially sensitivity and ground balance.

The depth of detection here is not high, but in general it is not as important as the ability to pick out a clear signal among many extraneous targets.

Not everyone is able to feel the difference between Mono and DD, and not everyone can get used to one of them, it comes only with years and experience. By the nature of the work, in a nutshell, this can be expressed as follows: a mono-coil indicates the target more accurately, and a high-frequency coil determines it better.

It is not uncommon when they are bought specifically for beach search.

Nel Tornado

This coil is becoming more and more common, because. have a number of advantages over regular ones. First of all, this is an increased size - 12x13 ″, and, accordingly, the soil scanning area and a somewhat greater target detection depth.

The larger size does not increase the speed of their survey of areas, because you need to walk with them slowly. This is necessary due to their increased sensitivity and size - the coil during fast wiring will not be able to process the signal correctly. Well, this is a feature of these models, but as for the shortcomings, they are generally obvious: increased phantomism, fear of littered places, difficulty in establishing the center of the target and the inability to use in difficult places.

It is used most often in large fields and meadows, where other coils can no longer see anything.

Coiltec

Having appeared quite recently, she put on a lot of noise among search engines. At first, there was little information about their effectiveness, not many dared to purchase them. Who wants to be the first to take a pig in a poke?

But gradually the diggers mastered this subject. Now such coils or, as they are also called “wheels” or “rudders”, are no longer a rarity.

They appeared at one time for a reason, manufacturers quickly realized the need for coils with an increased detection depth.

How good are they?

Coiltek 15″ coils (there are also 6″ coils) are available in three versions:

1. Coiltek DD 15″ 3kHz

2. Coiltek DD 15″ 7.5kHz

3. Coiltek DD 15″ 18.75kHz

All three are designed for surveying open spaces, the increased diameter allows you to scan a much larger area compared to other coils. At the same time, they reduce the number of passes. called blind zones, which are often obtained during fast wiring.

Of the shortcomings, we note the mediocre work of PinPoint and weight.

Let's highlight the three-hertz one, it is the most popular, because it has an increased depth of visibility of the target and it is, depending on various factors, about 3-5 cm. It seems a little, but don’t tell me, this is what is sometimes lacking in order not to pass by.

In theory, a low frequency adds depth, but at the same time loses the visibility of small objects. But some diggers claim that even with it they often find half a penny, 1/2 and 1/4 kopecks, etc.

Of course, it is not for everyday detecting and is best used in addition to others, for example, when adding plowing or for walking around broken places.

High-frequency will show itself best on beaches and in places where scales are plowed.

The mid-frequency one will be slightly inferior in depth to 3 kHz, but at the same time it will be preferable on moderately littered and mineralized soils.

In addition to Coiltek, similar coils from other companies can be found on sale: NEL Storm 13 × 14 ", NEL Attack 15″, Mars Goliath 15".

We know firsthand that you can read and reread reviews about coils for a whole month and end up completely confused.

Each coil is designed for its own purposes:

• in landfills, garbage dumps and foundations, it is best to use snipers,
• in overgrown villages, on beaches, forests and littered areas it is good to walk with an ellipse,
• for vegetable gardens and medium littered fields, 10 ″DD is suitable,
• for relatively clean spaces, large Coilteki, NELs and Mars.

And finally, let's say that we should not forget the common truth of a treasure hunter, that it is not a device that is looking for, but a person.

Today, even a beginner in our hobby knows that in order to increase the productivity of the search, sooner or later he will have to purchase an additional coil (coils) to his metal detector. For the search conditions are sometimes so different that no matter how cool the device is, a single coil will obviously not be enough to effectively perform narrow tasks.

Minelab 9" Mono Coil

What is important to us?

Search location

• Field- need to cover large areas a short time. This is a job for coils from 12 inches in diameter, and preferably at least 15 inches. Large coils allow you to increase the speed of surveying the site and the depth of detection, as well as avoid missing useful targets.

Coiltek 15 inch

• littered area- a place where once there were residential buildings (house spots), the foundations of buildings. This also includes attics and basements. The smaller the diameter of the searchcoil, the less impact on the quality of the search will have unwanted targets (metal debris). Usually for such conditions, searchers prefer to use coils with a diameter of up to 9 inches. Many generally consider a diameter of no more than 6 inches to be suitable.

Coiltek 6 inch.

• Sea beach- salty wet sand. One of the most difficult places to work with a metal detector, salt has an extremely negative impact on the stability of the search equipment. The device simply goes blind or floods in every way from interference. On a salty beach, it is advisable to use search coils of small diameter - this makes life much easier. On freshwater beaches, everything is much simpler, you can work with any coils, depending on the number of meth. garbage, but in use, as a rule, no more than 10-11 inches in size.

Minelab 15" coil versus standard Minelab 10.5" coil.

What are we looking for?

• coins

The vast majority of search engines hunt for coins of the period of the Russian Empire (RI) and treasures of the same period! If the search is conducted in the field, on the site of a plowed (or once plowed) village, then the larger the diameter of the coil, the better, with the exception of areas with a concentration of meth. garbage. The frequency of 7.5 kHz is ideal for operation. According to the empire - the very thing that is needed.

• Jewelry and small scale coins

But if the subject of your desires is, say, scales or metal-plastic, as well as jewelry, then the requirements for the frequency of the coil are different. Regardless of whether you have a standard coil, sniper or steering wheel, the frequency is preferably high, in our case it is 18.75 kHz. It is important not only to choose the right coil diameter, its type (DoubleD or Concentric (mono), shape (circle or ellipse), but also the frequency.

• Gold nuggets

When it comes to prospecting for gold nuggets, nuggets are most often found in highly mineralized soils. DoubleD type coils are considered to be more resistant to mineralization. But the search for gold is a separate, big topic, and now we will not touch on it. Moreover, for such tasks there are devices much more productive than Terok.

NEL Attack Coil 15"

Finally, we all love littered areas.

The simplest rule for beginners is that if you are detecting signals from several targets in one short sweep of the coil, then it's time to replace it with a smaller diameter coil. When two or more targets are hit by the coil, the metal detector cannot accurately determine what you have under the coil - the target will be misidentified and most likely missed by you.

It is precisely for such conditions that snipers exist - coils of small diameter, up to 6 inches (although if the coil is ellipsoidal, then it can be, for example, 5.5x9.5 or 10x5 inches). Mono 9-inch coils (round) have also proven themselves very well in littered areas.

NEL Snake 6.5x3.5 - real sniper

Well, the most tin - mineralization.

As you know, we are looking not in the air, but in the ground, which prevents the passage of an electromagnetic signal. It is clear that the higher the level of mineralization, the worse the penetration of the signal into the soil, not to mention the reduction in the identification capabilities of the metal detector. The larger the coil, the greater the grip on the ground.

Conclusion: the smaller the diameter of the coil, the less impact mineralization has on the operation of the device. Now we are not talking about special devices designed to search for gold!

What is the result?

Snipers, coils of small diameter, let it be up to 9 inches, are used to search in places with a high content of metal debris, as well as in buildings. Standard coils, 10-11 inches, are versatile for most search conditions and moderate amounts of trash.

Large coils, 15 inches or more - to increase the depth of the search, especially for the search for coins, and of treasures too. Very handy when you need to quickly cover a large area. Good for total cleaning of a promising area. But with an increase in the diameter of the coil, the separation index of closely lying targets deteriorates significantly. In places with a high content of metal debris, there is nothing to do with "rudders". Well, increased mineralization will not let you get bored.

Ellipse coils are convenient when working in the forest, among roots, bushes, stones and other inconveniences. More stable on mineralized soils. But the detection depth of round coils is somewhat greater.

The high frequency of 18.75 kHz is great for finding small targets, irregular objects (jewellery) and low-conductivity metals (gold). Low frequencies X-Terra - 3 and 7.5 kHz - designed to search for medium / large targets.

When buying a coil, remember that if you're going to be looking mostly for coins, 7.5kHz coils will work for you. If your main interest is beach hunting or small things like scales and metal plastics, take a coil with a high frequency of 18.75 kHz.

Fortunately, today owners of Minelab metal detectors of the most popular X-Terra series have the opportunity to purchase two and even three-frequency search coil from a well-known and well-established manufacturer - NEL. Also, another well-known manufacturer, MARS, has similar coils for the X-Terra series.

But, as you understand, a coil operating at only one frequency will always cost less than a three-frequency one. The choice is yours!

Good luck in finding.

Without a doubt, Grater 705 is one of the best advanced level devices. If the operator of a metal detector is an experienced digger, then he can easily "beat" a less experienced digger with a steeper MD. So I'm lucky to have this chic device at my disposal.

Not so long ago I decided to look after myself a sniper - a small coil for searching heavily littered areas. For several times they tried to dig on the foundations of the usual 10.5 "DD - these are generally pitchforks, a bunch of "left" signals, it is very difficult to dig, since the coil is large and several objects can climb into the working diameter at the same time and it is sometimes simply unrealistic to separate their indicators. It is for such purposes and you need a sniper.An important note - so that there are no glitches when working with a sniper, do not set the sensitivity to the maximum, for a grater 705 (20-23).

Have you ever tried to look for a Grater 705 with a regular coil in the attic or in the basement? Even if you have not tried, I will say right away - and do not try. For the cacophony is simply unreal, ringing everywhere and everywhere. For the size of the coil will intervene at the same time about 2-10 targets. foil pieces, rusty nails, small pieces of aluminum wire, other metal debris - the conclusion here is unambiguous - it is simply unrealistic to look for a 10.5 "coil in the attic. But a 5-6 inch sniper is just what the doctor ordered. It remains only to decide which coil to take.

The next nuance and plus in using a small coil is that it is convenient to dig at any time, even in the summer in the grass to the waist / to the ears. When the standard coil does not really crawl between the columns of plants, you can work quite comfortably with a sniper. And yet - it fits more tightly to the ground due to its small size, and therefore the area breaks through more clearly. So to say - the "streamline" in relief is many times greater than the standard coil.

When choosing a coil, the following questions arise:

How often should I take katuhen?
- Mono or DD?
- Ellipse or round?
- What is better - mono 9 "or 6" DD?
- What brand device will be better and more reliable?

I will briefly state my point of view on all these issues.

With what frequency is a sniper better?

Frequency - can be 3, 7.5 and 18.75 KHz. To explain, here I think, will be superfluous. And each frequency is suitable for some kind of case. But to summarize, most of the reviews, of course, are about the high-frequency model - 18.75. Since the sniper itself is designed to thoughtfully penetrate small areas, and also to search for "small things", then a high frequency is what is needed and it was she who was so fond of treasure hunters. Here, of course, there will be a loss in depth, but the separability of metals is many times better. Frankly, no matter how much I looked for reviews about a sniper with a frequency of 3 kHz, I did not find it, rarely anyone uses them.

If you think about it, a coil with such a frequency will "peel" deep into it very steeply, with such a coil you can most effectively examine fields that have been pierced before by larger coils. Look for embossed places with such a one, if you don’t want to spin on 3 square meters, looking for an eyelet from a cross)) In general, 3 KHz snipers are for those who don’t want to dig colored trifles, but want to look for normal coins))

But if you know where to look - then another story. In general, my opinion is to take only 18.75 (well, or at least 7.5). A trifle catches many times better, it also sees large targets, but it loses a little in depth.

Mono or DD?

Mono beats with a cone, DD-shka down the entire diameter. So as for me, you need to take DD. Yes, and diggers most often use double D coils.

Ellipse or round?

I read the forums, there are several models of ellipse-shaped snipers. In size, of course, they will be a little larger and, in fact, they cannot be called snipers.

Since the shape will be larger in size, then in heavily littered local areas the ellipse will "go blind" more often than a miniature 5 or 6 "coil. 90 percent of diggers agree that the ellipse is ideal for the beach. IMHO I support it.

Or maybe her this 6DD? There is a mono 9"!

There is a lot of controversy about the advisability of buying a sniper. Why, if there is a regular one from 305 - mono 9 "(on the photo - on the left).

An excellent search coil for medium-littered areas. My comrades, by the way, dug one treasure with a monk and were satisfied, knocked out all 100 coins exactly. The advantage over the standard DD was simply devastating. In general, the opinions of the people here are divided, there are adherents of both mono 9 "and snipers 6". Here, the place of application comes to the first pan, everything depends on it. If it’s a total trash can, then a sniper is better; if it’s medium, mono 9 inches is better, it will be much more convenient on the beach.

Which company to take a sniper rifle for Grater 705?

If earlier the choice was poor, now there are many manufacturers who produce coils for all devices in various variations. And there really is plenty to choose from. There are a lot of firms - Minelab, Nel, Mars MD, Detech and others. Everything is simple here - you need to "smoke" the forums, collect some statistics that are used more often and more successfully. So far, no matter how much I "smoked" the forums, most of all positive feedback about the Minelabovskaya coil. Why? Yes, because it was originally developed for devices of the X Terra series and has one hundred percent compatibility. As they say - why reinvent the wheel when everything has already been thought out for you?

I climbed the forums, read the reviews of diggers on various models, put together useful information, so I'm posting it, I think the owners of the 705th Minelabs will come in handy.

Minelab 6DD 18.75

The first katuhen, which is highly praised, is from Minelab. Among other things, one hundred percent compatibility and ease of use. The small diameter of 6" allows you to search "short", very useful, what can I say, a must-have for searching on foundations. It allows you to "pierce" literally every centimeter of the surface. Just compare the sizes of 6" and 10.5" coils:

High frequency is more suitable for finding small things - scales, other small coins, scales. In terms of depth, of course, it loses a little to a conventional coil with a frequency of 7.5, but not critical. But it allows you to simply completely knock out some small area. Optimal for "finishing" the territory after reconnaissance with a conventional coil.

There are many opinions about the advisability of buying this coil, if you run around the fields more, then there is no point in buying. Especially now, during the crisis, when the price tags have jumped 2 times. It is recommended only in 3 cases - if you are digging foundations, for attic searches and for searches in trash cans.

Excellent separability of metals, but low speed and shallow depth, is recommended for a leisurely thoughtful search in a small area, which is planned to be knocked out to zero.

Mars Sniper 2-frequency for X Terra

The novelty of 2015 from the "Marsians", as for me, is just perfect. This is exactly the development that all treasure hunters have been waiting for. No need now heaps of coils with different frequencies. This sniper has 2 frequencies at once - 7.5 and 18.75.

The shape is an ellipse, so see for yourself whether you need a round or an ellipse. The coil size is 6 * 10". For heavily littered areas, most likely it will not work. But it is more versatile. You can bomb fields, beaches, even foundations. There are no reviews yet, but I think they will appear very quickly, since the device is really in demand.

Nel Sharp and Nel Sharpshooter

Two more coils of small diameter, very often used by treasure hunters.

Nel Sharp 18.75 - 5" round reel

Sharpshooter (Sniper) - 5.5*9.5" ellipse, choice of frequency.

In addition to high-frequency, there are also 7.5 kHz. Your choice, as they say. Choose the size for your needs, I wrote my IMHO above.

As the diggers who used it write off, the first thing that surprises is the depth, the Sharpshooter ellipse is slightly inferior to the standard coil. Decent depth for a small reel is a big plus.

There are a lot of positive reviews, increased warranty on reels - Sharp 5 years, Sharpshooter 3 years. Reliable (were at least before). Now the alignment of Nel coils is not so rosy, there is a lot of marriage. As for me, I would take either Minelab or Mars. IMHO.

In addition to the above, there are also Detech and Coiltek snipers. We will do reviews on them a little later, because they are not so in demand.