Precision in Every Pulse: The Technology Behind Minelab CTX 3030

Here comes Minelab CTX 3030 review. This device is one of the best nowadays. So, what are its advantages and disadvantages? What makes MD so special? Are there any metal detectors better than this one? And the most important question – whether this device is worth its money? These are the questions I’ve asked myself and now I’m ready to share my opinion with you.

Intro

What is the most important, I’ve been using this MD for 160-200 hours of treasure hunting. A friend of mine has got one. So, we’ve tested it together on various types of ground: beaches, fields, areas with lots of litter, abandoned gardens, sports grounds etc.

Then we exchanged our metal detectors and I did feed with my own hands the difference between my E-Trac and his CTX 3030.

Our current review is a follow-up to the previous article about the best metal detectors. Once you look through it you’ll see that CTX 3030 was called the best among all the reviewed metal detectors.

And now, let’s start from…2012. That was the year when the Australian company Minelab introduced its new upgraded metal detector model.

Even nowadays this MD is still the leading one as for operability and functionality, not to mention what a breakthrough it was 5 years ago. E-TRAC was and yet is a “younger brother” for this model.

The question is whether any better metal detectors have been designed recently? Well, the answer is yes and no. Of course, the company continues growing and it has created some new MD models.

However, most of them are aimed at lump gold hunting. It’s easily explained by the fact that Minelab is an Australian company, so lump gold can be found quite often over the continent.

The new MD models are completely different, even when speaking about the basic technologies they use. I was quite shocked by the prices, which are rather high even in comparison with CTX 3030, which isn’t cheap at all.

All above mentioned brings us to the point that CTX 3030 doesn’t have any comparable alternative. All we are left with is good old-fashioned E-TRAC, though we’ll discuss the difference between these two models a bit later.

Now, what exactly makes MD so unlike all the other metal detectors on the market?

Here are some key features and aspects associated with the Minelab CTX 3030:

  1. Waterproof Design:
  • The CTX 3030 is designed to be fully submersible up to 10 feet (3 meters), making it suitable for underwater metal detecting.
  1. Multi-Frequency Technology:
  • One of the standout features is its simultaneous multi-frequency technology, allowing it to operate on multiple frequencies at the same time. This provides versatility in detecting a wide range of targets.
  1. Wireless Audio:
  • The detector comes with built-in wireless audio, enabling users to operate without being tethered to the control box. It is compatible with Minelab’s wireless headphones.
  1. GPS Locating:
  • The CTX 3030 features integrated GPS functionality, allowing users to save and navigate to specific locations where targets are found.
  1. Full-Color LCD Screen:
  • Equipped with a large, full-color LCD screen, the detector provides clear and detailed information about targets, settings, and mapping data.
  1. Target Trace and Target Separation:
  • Target Trace and Target Separation features help users identify and differentiate between multiple targets in close proximity.
  1. Adjustable Discrimination Patterns:
  • Users can customize discrimination patterns to suit their preferences and target hunting conditions.
  1. Automatic Ground Balance:
  • The CTX 3030 includes automatic ground balance to adapt to different soil conditions for optimal performance.
  1. Wireless Updates:
  • Users can update the detector’s software wirelessly, ensuring access to the latest features and improvements.
  1. Advanced Target ID:
    • The metal detector usually provides advanced Target ID features, including Ferrous (iron) and Conductive target discrimination.
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Last update on 2024-04-06 / Affiliate links / Images from Amazon Product Advertising API / Source: Amazon Affiliates

ModelCTX 3030
ApplicationCoin, Relic, Jewellery & Beach
TechnologyFBS 2, Smartfind 2, GPSi, Wi-Stream
WaterproofWaterproof to 3m/10-feet
FrequencyMultiple frequencies: 1.5 – 100kHz
Coil (standard)11-inch waterproof Double-D smart coil
Audio OutputBuilt-in speaker, standard ¼-inch non-waterproof socket, custom waterproof socket
Headphones SuppliedKOSS UR30 (100 ohm) supplied with detector (non-waterproof)
Visual DisplayFull colour LCD with backlight and adjustable brightness (1–10)
BacklightYes
USB ConnectivityUSB interface for XChange 2 PC software
MemorySettings saved automatically while detecting and remain until changed or reset
Depth IndicationAccurate gauge active in normal detecting and Pinpoint mode
Detect Modes10 fully customisable, including 5 preset (Coins, Beach, Relic, Silver & High Trash)
DiscriminationSmartfind 2TM 2 dimensional colour discrimination
TimingsNo
Audio ToneCustomisable Tone ID Profiles
Audio TypeNormal, Long, Smooth & Pitch Hold
Ground BalanceAuto Compensation and Auto Ground Balance
Ground Balance Type
Pinpoint2 modes: normal and sizing
SensitivityAuto and Manual (1–30)
Noise CancelManual & Automatic (11 channels)
ThresholdLevel adjustment (1–50), Pitch adjustment (1–30)
Target Volume Adjust1-30
BatteryLi-ion pack with fast charger. 12 V car adapter supplied with Standard Pack only
Low battery alertAudio & visual indication
LengthMin 37 in. (940 mm) – Max 55.3 in. (1405 mm)
Weight5.20 lbs (2.36 kgs) including Li-ion battery pack
Warranty3 years control box & coil

Advantages

Waterproof

It is a multi-purpose device meant for hunting at any weather conditions and over any ground type. Due to its waterproofness, the MD can be used for hunting both on the ground and under water up to 10 feet (3 meters).

This means that you can take the device to the beach and to the field, get soaked wet without worrying if the device is safe.

However, please keep in mind that this isn’t a metal detector for deep water hunting. Still 10 feet isn’t the depth where you may find some gold from lost galleons, nevertheless it’s not recommended to go deeper with this metal detector.

Color LCD

Minelab metal detector was the first one to get a large colored LCD display which is very good even if you use it in the direct sunlight. The device control unit is not portable and it is placed rather high on a carbon arm.

Wireless

A wire that is connected to a coil is a weak point of all cheap metal detectors. CTX 3030 uses a wireless technology of sound transfer. Which means that there is no wire that interrupts the hunting process and can be easily torn off.

At that you still have a choice whether to use a wireless external speaker or headphones that come in the device set. However, please don’t forget that they won’t do for underwater treasure hunting.

Traditionally KOSS is the manufacturer of speakers for Minelab. Wireless speakers for CTX 3030 have a standalone control unit fixed on a user’s waist.

It is connected to the speakers by means of a coiled cable with a common 3.5 mm jack. For underwater hunting you may also use waterproof wireless headphones.

GPS-navigation and Google Maps

This MD has an embedded GPS detector therefore you can leave your portable GPS-navigator at home. Besides, the detector can be synchronized with your computer.

Now you can ask me – what is GPS for? This is just a metal detector. Its main task is to search for treasures, but not to locate the position. On one hand I agree with you, but on the other hand you are wrong when saying so.

By means of Google Maps and a program for PC XChange 2 you’ll clearly see where your findings were detected and where there was nothing.

When at home you can look through your root one more time and check which section you may have skipped. Experienced treasure hunters will understand what I mean.

Though it’s a fact, that once your GPS navigator is “On” the device’s battery discharges faster.

However, the battery charge is still enough to perform continuous operation during a whole light day.

Multi-frequency metal detector

In plain English, it means that the detector “shoots” a whole bunch of frequencies into the ground and this way it won’t let you miss neither a small coin, nor a large object.

Another plus is that this characteristic allows working on highly mineralized soils, where single frequency MDs are of no use.

As for Minelab rivals – even their flagship models can work at only one frequency at a time, all you can do is to switch between different frequencies consistently.

Metal detector is designed using FBS2 technology, that allows treasure hunting at 28 frequencies simultaneously in the range from 1,5 to 100 kHz.

High frequencies appear to be more sensitive to detect small targets and low frequencies sense deep lying targets better. FBS simultaneously sends and analyses a complete range of multi-frequencies from 1,5 kHz to 100 kHz.

Which means that the MD is sensitive enough to detect both small and large deep lying targets at the same time.

Smartfind 2D – advanced discrimination function

This is the ability to detect targets basing simultaneously on their conductivity and iron content. It also helps to define your target type yet more precisely (ferrous or non-ferrous metal), its size and depth.

Such an approach is the most accurate technology to define whether the target is something valuable or just some junk.

By means of Target Trace and Target Separation you can see between some rust nail and a coin lying close together in the ground.

When using any common metal detector in this case you’ll clearly see just the nail since it’s heavier and its mass will just hide the coin lying next to it.

Ground balance function

It has two adjustment modes: manual and automatic one. The user manually adjusts the device to work around homogenous ground – this allows searching at ultimate depth.

The automatic adjustment mode is used on mixed soils to perform the device selftuning to current hunting conditions.

The device has 10 search modes: 5 of them have pre-set ground balance values and Fe-Co discrimination and 5 modes set by the user.

Settings

CTX 3030 has quite complicated settings and that’s a fact. However, its manufacturers have foreseen this obstacle and that’s why the MD has 5 embedded pre-set modes.

These are for coin, beach, relic, silver hunting and for working on the ground littered with rubbish. For those who want to create their own search modes the device has 5 more channels.

Balance

One of the main demerits of this metal detector (except its price, of course) is its considerable weight. The company engineers have done their best to prevent your hand from getting tired while using the device.

The waterproof battery unit is quite large and it is placed on the upper section of the MD rod, so this way it acts as a counterbalance. But what has caused such an innovation?

The answer is very simple – using coils of smaller or larger diameter has always lead to imbalance. User’s hand would grow weary in a short period of time, but now the metal detector is much better balanced.

Power supply

The device is powered from a lithium battery, which full charge is enough for 11 hours of operation. If you turn of GPS and Wi-Stream the MD operation time increases sufficiently.

A special box that comes in the set allows using 8 AA batteries.

Multilanguage

It doesn’t seem to be rather significant benefit, but only if English is your mother tongue. Nevertheless, just imagine trying to get through the adjustment process, if you don’t speak English and live overseas.

In this case you can choose one of the following 10 languages: English, French, German, Italian, Chinese, Polish, Portuguese, Russian, Spanish or Turkish.

Coils selection

A standard set is equipped with Minelab CTX 11” Smart coil. The manufacturer also provides other coils of different diameters for this detector – 17 inches and 6 inches.

The 17 inch one is used for hunting around large areas (it searches 20% deeper in comparison with an ordinary 11″ coil), and 6-inch coil should be used on some littery ground.

Noise elimination

For example, the place you’d like to search through is near some electricity transmission line, which happens quite often by the way. Ordinary metal detectors get blind since electricity causes high disturbances.

But not for Minelab CTX 3030, which has a “noise cancel” function.

So, let me list the device advantages one more time and add some more minor ones, that weren’t mentioned above:

  • Color 3.5 inch LCD display;
  • GPS-navigation and its apps being upgraded all the time;
  • GeoTrails — traces your rout with the metal detector;
  • WayPoints — some interesting points (favorites);
  • FindPoints — places where you found your treasures;
  • GeoHunts — information about the whole hunting route;
  • Waterproofness — up to 3 meters or 10 feet;
  • Wireless transmission of AF signal by means of WiFi, minimum of wires now;
  • USB to connect with your PC;
  • You can change the MD firmware and install some upgraded one to improve the device functions;
  • VDI/TargetID — manual automatic;
  • Noise cancel function;
  • Uses FBS2 technology;
  • Multi-frequency;

Drawbacks

Now let’s talk about the device disadvantages. Have you thought about any?

Batteries usage

If you use ordinary batteries, not the accumulator rechargeable battery you’ll need a lot of them. Eight batteries get low during a light day without using any additional options such as GPS or other embedded functions.

The device’s weight is its demerit as well (5.6 pounds). But the manufacturer designed the MD so, that the main load falls on its accumulator.

Quite difficult for the newbies to master

It isn’t easy for a newbie to understand all the technical peculiarities, especially if you want to get the best of this metal detector. Therefore, at first, you’ll have to use its standard modes.

Weight

This MD is really heavy; however, it is well balanced due to its coil that comes in the set. But right when you change the coil for 17-inch one the device turns into a “kettlebell”, since the balance changes.

The good news is that you can use Minelab Pro-Swing 45 – a special webbed gear, which perfectly deals with this issue.

Price

Well, this is the main obstacle once you’ve decided to buy CTX 3030, since quite few treasure hunters can afford purchasing a metal detector that costs xxxxx$.

Comparison

Minelab CTX 3030 vs Minelab GPX 5000

ModelCTX 3030GPX 5000
ApplicationCoin, Relic, Jewellery & BeachGold Prospecting & Deep Relic
TechnologyFBS 2, Smartfind 2, GPSi, Wi-StreamMPS, DVT & SETA
WaterproofWaterproof to 3m/10-feetNo
FrequencyMultiple frequencies: 1.5 – 100kHzBi-Level, Advanced Pulse Induction
Coil (standard)11-inch waterproof Double-D smart coil11″ Round Double-D plus 15 x 12-inch Monoloop
Audio OutputBuilt-in speaker, standard ¼-inch non-waterproof socket6.35mm (1/4″) headphone and speaker jack
Headphones SuppliedKOSS UR30 (100 ohm) supplied with detector (non-waterproof)Koss 100 ohm headphones
Visual DisplayFull colour LCD with backlight64 x 128 pixels, transflective with white backlight
BacklightYesYes with adjustable automatic ‘time-out’
USB ConnectivityUSB interface for XChange 2 PC softwareNo
MemorySettings saved automaticallySetting changes saved automatically
Depth IndicationActive in normal detecting and Pinpoint modeNo
Detect Modes10 fully customisable, including 5 presetGeneral, Deep, Hi-Mineral, Patch, Hi-Trash & Pinpoint
DiscriminationSmartfind 2TM 2 dimensional colour discriminationIron Reject: range 1 to 10 & Off (All Metal)
TimingsNoNormal, Sensitive Extra, Enhance, Sharp, Sensitive Smooth, Coin/Relic, Salt/Gold & Fine Gold
Audio ToneCustomisable Tone ID ProfilesVariable Control 1 to 100
Audio TypeNormal, Long, Smooth & Pitch HoldQuiet, Normal, Deep & Boost
Ground BalanceAuto Compensation and Auto GroundAutomatic Ground Balance, Fixed & Tracking: Slow, Medium & Fast
Ground Balance TypeGeneral, Specific & Ground Balance Off
Pinpoint2 modes: normal and sizingNo
SensitivityAuto and Manual (1–30)Rx Gain 1 to 20
Noise CancelManual & Automatic (11 channels)Automatic & Manual 0 to 255
ThresholdLevel adjustment (1–50), Pitch adjustment (1–30)Adjustable turn control
Target Volume Adjust1-30Target Volume 1 to 20. Volume Limit 1 to 20
BatteryLi-ion pack with fast chargerLithium-ion rechargeable battery 68Wh
Low battery alertAudio & visual indicationAudio alert
LengthMin 37 in. (940 mm), Max 55.3 in. (1405 mm)1100 mm (43.3”) – 1300 mm (51.2”)
Weight5.20 lbs (2.36 kgs) including Li-ion battery pack2.4 kg (5.3 lbs) including 11” coil. Battery weight 780 g (1.7 lbs)
Warranty3 years control box & coil3 years control box and coil

Minelab CTX 3030 VS Minelab GPZ 7000

ModelCTX 3030GPZ 7000
ApplicationCoin, Relic, Jewellery & BeachGold Prospecting
TechnologyFBS 2, Smartfind 2, GPSi, Wi-StreamZVT
WaterproofWaterproof to 3m/10-feetWaterproof coil to 1m/3ft
FrequencyMultiple frequencies: 1.5 – 100kHzZero Voltage Transmission (ZVT)
Coil (standard)11-inch waterproof Double-D smart coil14″ x 13″ Super‑D Configuration
Audio OutputBuilt-in speaker, standard ¼-inch6.3 mm (¼”) non waterproof socket, Wi‑Stream wireless signal transmission
Headphones SuppliedKOSS UR30 100 ohm (non-waterproof)KOSS UR 30 100 ohm with 6.3 mm plug (¼-inch) (non waterproof)
Visual DisplayFull colour LCD with backlightFull colour LCD (320 x 240 pixels)
BacklightYesYes
USB ConnectivityUSB interface for XChange 2 PC softwareUSB interface for XChange 2 PC software
MemorySettings saved automaticallyYes
Depth IndicationActive in normal detecting and Pinpoint modeNo
Detect Modes10 fully customisable, 5 presetGold Mode (High Yield, General, Extra Deep) Ground Type (Normal, Difficult, Severe)
DiscriminationSmartfind 2TM 2 dimensional colourAll Metal
TimingsNoNo
Audio ToneCustomisable Tone ID Profiles1-100
Audio TypeNormal, Long, Smooth & Pitch HoldNo
Ground BalanceAuto Compensation and Auto GroundAuto and Manual (Quick‑Trak trigger button)
Ground Balance TypeAuto and Manual (Quick‑Trak trigger button)
Pinpoint2 modes: normal and sizingNo
SensitivityAuto and Manual (1–30)1-20
Noise CancelManual & Automatic (11 channels)Auto and Manual (256 channels)
ThresholdLevel adjustment (1–50), Pitch adjustment (1–30)Level (1-50) Pitch (1-100)
Target Volume Adjust1-30Range (1-20) Limit (1-20)
BatteryLi-ion pack with fast chargerLi-Ion Rechargeable Pack (7.2V DC, 72Wh)
Low battery alertAudio & visual indicationYes
LengthMin 37 in. (940 mm), Max 55.3 in. (1405 mm)Collapsed: 1170 mm (46.1”) Extended: 1526 mm (60.1”)
Weight5.20 lbs (2.36 kgs) including Li-ion battery pack3.32 kg (7.32 lb) (Including GPZ 14 coil, skidplate and 72Wh battery)
Warranty3 years control box & coil3 years control box and coil

Minelab CTX 3030 VS Minelab SDC 2300

ModelCTX 3030SDC 2300
ApplicationCoin, Relic, Jewellery & BeachGold Prospecting
TechnologyFBS 2, Smartfind 2, GPSi, Wi-StreamPulse Induction (PI) and Multi Period Fast (MPF)
WaterproofWaterproof to 3m/10-feetWaterproof to 3m/10-feet
FrequencyMultiple frequencies: 1.5 – 100kHzPulse Induction (PI) and Multi Period Fast (MPF)
Coil (standard)11-inch waterproof Double-D smart coil8″ Round Monoloop
Audio OutputBuilt-in speaker, standard ¼-inch non-waterproof socketBuilt-in speaker, Minelab headphones (supplied)
Headphones SuppliedKOSS UR30 (100 ohm) supplied with detectorMinelab headphones (supplied)
Visual DisplayFull colour LCD with backlight9 LEDs indicate detection, battery status and threshold level
BacklightYes
USB ConnectivityUSB interface for XChange 2 PC software
MemorySettings saved automatically while detecting
Depth IndicationActive in normal detecting and Pinpoint mode
Detect Modes10 fully customisable, including 5 presetNormal (1-5 Sensitivity range) & Salt (1-3 Sensitivity range)
DiscriminationSmartfind 2TM 2 dimensional colour discrimination
Audio ToneCustomisable Tone ID ProfilesLow, High
Audio TypeNormal, Long, Smooth & Pitch Hold
Ground BalanceAuto Compensation and Auto Ground BalanceAutomatic Ground Tracking (AGT) Fast Ground Balance
Pinpoint2 modes: normal and sizing
SensitivityAuto and Manual (1–30)
Noise CancelManual & Automatic (11 channels)Manually Initiated, Automatic Scanning
ThresholdLevel adjustment (1–50), Pitch adjustment (1–30)9 audio levels
Target Volume Adjust1-30
BatteryLi-ion pack with fast chargerLi-on Battery Pack with Charger
Low battery alertAudio & visual indication1 low battery warning LED
LengthMin 37 in. (940 mm), Max 55.3 in. (1405 mm)Extended: 1500 mm (59.1″) Collapsed: 400 mm (15.7”)
Weight5.20 lbs (2.36 kgs) including Li-ion battery pack2.3 kg (5.1 lbs)
Warranty3 years control box & coil3 years control box & coil

Conclusion

So far E-trac still is the one to be used when working on mineralized soils and saliferous rocks. The device ensures stable and faultless operation with an impressive search depth value.

This metal detector is one of the leaders both in search depth and discrimination function performance.

Is not a restyled model, it is a brand-new MD model. Its developers have not only upgraded the device, but they have also fulfilled a totally new concept in it.

As for the search characteristics, the metal detector level almost hasn’t changed – there was no impressive breakthrough as for targets detection. But all too often this isn’t the deal.

What is more important, is that the device clearly hears the target signal among any scattered metal rubbish and CTX 3030 deals perfectly with this task.

СТХ 3030 has inherited the best from E-trac – it has become faster, it recognizes targets clearer, searches a bit deeper, it is capable of underwater treasure hunting and its operation time (using accumulator) has increased two folds.

The device has excellent color LCD display, GPS, well designed rod, wireless headphones unit and other stuff – which is another cherry on the cake.

As for me, I decidedly choose 3030 as a more sophisticated MD model.

I stick to my opinion – 3030 is the best metal detector nowadays.

It doesn’t mean that it doesn’t have any disadvantages, but it is worth each dollar spent on it. Due to its price, not everyone can afford buying it. But if you have enough money, you won’t regret purchasing exactly this MD.

However, don’t expect for a miracle to come – it is just a device, though a high quality one. But it is you who goes treasure hunting, not the device. Once you get how to adjust it and use all the features, you’ll find your treasures where all the rest find nothing.

You can easily sell the MD if things go wrong and you won’t be able to work with it. Anyway, you don’t lose anything. Life is too short and you should take the best of it. Especially if it concerns your favorite hobby.

Here is some advice from the experienced owners

When you pass the target on the edge of threshold noise and the MD can’t define the target metal, conductivity and the discriminator shows nothing as well as the target depth can’t be defined – push Pinpoint button.


Using Pinpoint the device easily captures and locates the target which the MD couldn’t detect earlier. After that carve out a soil divot with a spade and put a coil into it – now the detector will clearly display all the information it gets.


Sometimes it is reported about a little slop that appears in the rod parts fitting together. In this respect, we’d say that it is a must to wash the device rod and coils after treasure hunting (in the woods, fields, lake, see etc.).

The thing is that the sand (i.e. abrasive substance) scrubs internal and external coating of the rod moving parts and causes a gap between them. The device is ok with water, so wash it once you’ve finished searching before putting it back into the case.


As for the accumulator storage. The device has a lithium-ion battery, so when you aren’t using it it’s better to store the battery 50% charged – this way it’ll serve longer. Many battery chargers have a charging mode “for storage”, however a standard one doesn’t have it.


Minelab Pro-Swing 45, which is a special webbed gear, will perfectly help you if your hand still becomes tired very quickly when working with this MD.


The manufacturer doesn’t recommend storing this metal detector in your car trunk in summer. The LCD display may swell because of high temperature, though it doesn’t affect the device operability, it just doesn’t look nice.


If you’ve found yourself in a highly littered with rubbish ground, turn off Multitone and switch to 5 tone mode. Otherwise it’ll drive you crazy.


It makes sense to buy one more battery unit only if you go treasure hunting somewhere without any chance to charge the MD battery and you don’t have a car. The standard battery unit is enough for a day of the device operation with all additional functions on. If you turn them off, it’ll work even longer.