Nokta Simplex Ultra Metal Detector: Ultimate Essential Guide

The Nokta Simplex Ultra metal detector is a powerful, waterproof, and lightweight machine. It offers significant performance upgrades over the original Simplex, featuring a full carbon fiber shaft, enhanced ground balance, and better target separation. It is the perfect choice for both beginners and experienced detectorists seeking depth and versatility.

Choosing the right metal detector can feel overwhelming. Many beginners worry about buying a machine that is too complex or not powerful enough. You need a detector that handles varied terrains well, from dry parks to wet saltwater beaches. The Nokta Simplex Ultra metal detector solves these problems. It offers advanced features in a simple, easy-to-use package. This guide will show you exactly how to set up and master the Simplex Ultra. You will learn the secrets to finding more treasure right away.

Why the Nokta Simplex Ultra is a Game Changer for Detectorists

The Nokta Simplex Ultra metal detector stands out because it combines power with simplicity. It is an ideal machine for beginners but offers features that seasoned experts appreciate. The key upgrade is the full carbon fiber shaft. This makes the detector much lighter and stronger than its predecessors. It is also fully submersible up to 16 feet (5 meters). This means you can hunt coins or relics in rivers, lakes, and even the surf line.

The Simplex Ultra is a huge step up from the older Simplex+ model. It has faster processing speed and better target identification. This improved speed helps you find good targets even when they are close to trash. The Simplex Ultra is truly a versatile machine for any type of treasure hunting.

Key Features and Technical Specifications Overview

Understanding the technical details helps you use the detector effectively. The Nokta Simplex Ultra operates using Very Low Frequency (VLF) technology. This is the standard for finding coins and jewelry. It runs at a single frequency of 15 kHz. This frequency is excellent for general detecting depth and sensitivity to smaller items.

The detector comes standard with an 11-inch DD search coil. DD coils offer great ground coverage and better separation of targets. The Simplex Ultra also features built-in wireless connectivity. This lets you use optional wireless headphones for clearer audio. The machine is designed for comfort and extended use in the field.

Here is a quick breakdown of the Simplex Ultra’s main specifications:

The combination of the carbon fiber build and the IP68 rating makes the Nokta Simplex Ultra a robust choice. It is ready for serious detecting right out of the box.

Setting Up Your Nokta Simplex Ultra for First Use

Getting started with your new detector should be simple. The Nokta Simplex Ultra is designed for quick assembly. Follow these steps to prepare your machine for its first hunt. Proper setup ensures the best performance and comfort.

Assembly and Ergonomics

1. Attach the Coil: Slide the coil cable connector into the control box port. Tighten the connector securely by hand. Do not overtighten it.
2. Adjust the Shaft: The Simplex Ultra uses a telescopic carbon fiber shaft. Adjust the length so the coil rests flat on the ground when you are standing upright. Your arm should be slightly bent when holding the handle.
3. Wrap the Cable: Wrap the cable snugly around the lower and middle shaft sections. Use the provided Velcro straps. This prevents the cable from swaying. A loose cable can cause false signals.
4. Charge the Battery: Fully charge the built-in Lithium Polymer battery before hunting. Use the included USB cable. A full charge takes several hours.

Initial Settings Check

Once assembled, turn the detector on. I always recommend starting with factory defaults first. This lets you learn the machine’s natural sounds.

Sensitivity: Start sensitivity around 3 or 4 bars below the maximum. If the detector starts chattering or giving false signals, lower the sensitivity slightly.
Volume: Adjust the main volume to a comfortable level. You should easily hear the target tones.
Backlight: If hunting in daylight, keep the screen backlight low or off to save battery life.

Proper setup ensures you are comfortable. Comfort means you can swing the detector longer. More swinging means more finds.

Understanding Search Modes: Park, Field, Beach, and Gold

The Nokta Simplex Ultra metal detector offers four main search modes. Each mode is optimized for different environments and target types. Using the correct mode for your location is crucial for success.

Park Mode (P)

Park mode is perfect for high-trash areas like playgrounds, parks, and schoolyards. This mode uses faster recovery speed. Fast recovery speed helps the detector separate good targets (like coins) from nearby trash (like pull tabs or nails). Park mode often uses higher discrimination settings by default. This rejects most iron trash automatically.

Best for: Modern coins, shallow jewelry, general sweeping.
Tip: If you hear too many signals, increase the discrimination slightly in this mode.

Field Mode (F)

Field mode is designed for less trashy environments, such as open fields, farms, and forests. This mode is optimized for finding deeper targets and relics. It generally uses a slightly slower sweep speed than Park mode. This slower speed helps the detector penetrate deeper into the ground. Field mode usually has lower discrimination. This allows you to hear small pieces of iron that might be masking a valuable relic.

Best for: Relic hunting, deeper coin finds, historical sites.
Tip: Pay close attention to subtle tone changes in Field mode.

Beach Mode (B)

Beach mode is perhaps the most important for versatility. Wet sand and saltwater are highly mineralized. This mineralization causes standard detectors to chatter constantly. The Simplex Ultra’s Beach mode handles this mineralization very well. It uses a specific ground balancing algorithm to cancel out the salt signal. This mode is essential for hunting both wet and dry sand.

Best for: Saltwater beaches, highly conductive wet ground.
Tip: Always perform a fresh ground balance when moving from dry sand to wet sand.

Gold Mode (G)

Gold mode is specialized for finding tiny, low-conductive targets like natural gold nuggets. Gold nuggets are often found in highly mineralized soil. This mode operates at a high sensitivity level. It is designed to ignore large amounts of ground mineralization while still picking up tiny gold signals. It is highly sensitive but will also pick up small pieces of iron trash.

Best for: Gold prospecting in mineralized gold fields.
Tip: Sweep slowly and listen carefully. Gold signals can sound very faint.

Mastering Ground Balance and Sensitivity

Ground balance is the most critical setting on any metal detector. It tells the machine how to ignore the natural minerals in the ground. If your ground balance is off, the detector will either chatter constantly or lose significant depth. The Nokta Simplex Ultra makes this process very simple.

Automatic Ground Balance

The Simplex Ultra features excellent automatic ground balancing (Auto GB).

1. Select your desired search mode (e.g., Field or Beach).
2. Hold the detector’s coil about 12 inches above the ground.
3. Press and hold the Ground Balance button (usually marked GB).
4. Pump the coil up and down quickly, from 1 inch off the ground to about 8 inches off the ground.
5. Continue pumping until the detector gives a steady tone or the screen shows a stable GB number.

The Simplex Ultra is fast. It usually takes only 3 to 5 pumps to achieve a good balance. Always re-balance if you change terrains significantly, such as moving from dirt to gravel.

Setting Sensitivity Correctly

Sensitivity controls how deep the detector can see and how responsive it is. High sensitivity means more depth, but also more noise from ground minerals and electrical interference.

Start High: Begin your hunt with the sensitivity set high, maybe around 6 or 7 out of 10.
Listen for Noise: If the detector starts making constant noise (chatter) without you moving the coil, lower the sensitivity one bar at a time.
Optimal Setting: The perfect sensitivity setting is the highest level you can run without excessive false signals. This maximizes your depth potential.

If you are hunting near power lines or cell towers, you may need to drop the sensitivity significantly. Electrical noise interferes with the detector’s signal.

Real-World Performance: Depth, Separation, and Mineralization

I have spent many hours testing the Nokta Simplex Ultra metal detector in real-world conditions. Its performance truly shines when dealing with tricky ground.

Depth Penetration

The Simplex Ultra offers excellent depth for a single-frequency VLF machine. In mild soil (like typical park dirt), I consistently detect coins at 8 to 10 inches deep. Larger relics can be found even deeper, sometimes exceeding 12 inches. The key to maximizing depth is proper ground balance and maximizing the sensitivity without noise. The 11-inch DD coil pushes the signal deep into the ground.

Target Separation

Target separation refers to the detector’s ability to distinguish two separate targets lying close together. This is crucial in trashy parks. The Simplex Ultra has very fast recovery speed. When I sweep over a nail next to a coin, the detector quickly recovers and still gives a clear, high-tone signal for the coin. This speed is a major advantage over older, slower detectors.

Handling Mineralization (GEO Optimization)

The Simplex Ultra handles highly mineralized soil better than most entry-level detectors.

Red Clay: In heavy red clay areas, mineralization is high. Use Field mode and perform frequent ground balancing. The detector remains stable, though you might lose an inch or two of depth compared to mild soil.
Wet Salt Sand: This is where the Beach mode excels. By running the ground balance specifically for saltwater, the detector ignores the conductive salt layer. This lets you hear the targets buried beneath it. This capability is essential for serious beach hunters.

The performance of the Nokta Simplex Ultra is reliable and predictable across various terrains. It gives you confidence that you are not missing deep targets.

Nokta Simplex Ultra vs. Simplex+: Is the Upgrade Worth It?

Many detectorists already own the original Simplex+ and wonder about upgrading. The Nokta Simplex Ultra is a definite evolution, not just a slight revision. The differences center on build quality, depth performance, and user interface features.

Build Quality and Ergonomics (SXO Focus)

The most immediate difference is the shaft. The Simplex+ used an aluminum shaft. The Simplex Ultra uses a lightweight, sturdy carbon fiber lower and middle shaft. This reduces the weight from 3.0 lbs to 2.6 lbs. That half-pound difference matters greatly during an eight-hour hunt. The carbon fiber also reduces shaft wobble, leading to smoother sweeps and fewer false signals.

Software and Performance

The Ultra version features a completely redesigned operating system.

Enhanced ID Stability: The Target ID numbers are more stable, especially on deeper targets. This helps you identify what you have found before you dig.
Increased Depth: Due to improved internal processing, the Ultra achieves slightly greater depth, often 5% to 10% deeper than the Simplex+ in challenging soil.
Iron Volume: The Ultra includes adjustable iron volume. This allows you to lower the volume of iron signals without completely discriminating them out. This is vital for relic hunting. You want to hear the iron to know a good target might be masked, but you don’t want it to blast your ears.

If you are a beginner starting fresh, the Simplex Ultra is the clear choice. If you own the Simplex+, the upgrade is highly recommended for the weight reduction and performance enhancements, especially if you hunt beaches or highly mineralized ground often.

Essential Accessories for the Simplex Ultra Detector

A good detector is only part of the treasure hunting setup. Having the right accessories makes your hunts more efficient and productive. Never go hunting without these essential tools.

1. Pinpointer

A pinpointer is a small, handheld probe. It is essential for locating the exact position of the target inside the plug you dug. Without a pinpointer, you will spend much time digging and searching the dirt pile. The Nokta PulseDive is a popular, waterproof option that pairs well with the Simplex Ultra.

2. Quality Digging Tool

Do not use a garden trowel. You need a strong, sharp digging tool designed for relic hunting. A purpose-built stainless steel shovel or spade is required for digging deep plugs quickly and cleanly. Always fill in your holes completely.

3. Wireless Headphones

The Simplex Ultra has built-in wireless capability. Using wireless headphones helps you hear the faint, deep signals that you might miss with the built-in speaker. Nokta offers high-quality 2.4 GHz wireless headphones designed specifically for this machine. Sound clarity is critical for identifying targets accurately.

4. Coil Cover

Always use the coil cover provided with your detector. This plastic shell protects the delicate search coil from scratches and impacts. Scratches can damage the coil and affect performance over time.

5. Battery Backup

While the internal battery is excellent, carrying a small portable power bank (power brick) is smart. You can charge the detector in the field using the USB cable. This is vital for all-day hunting trips far from power outlets.

Maintaining and Updating Your Nokta Simplex Ultra

The Nokta Simplex Ultra metal detector is built to last. However, regular maintenance ensures it stays in top condition. Since this machine is software-driven, keeping the firmware updated is also crucial.

Routine Maintenance Tips

1. Cleaning: After every hunt, especially in wet or muddy conditions, wipe down the control box and shaft. Use a damp cloth. Do not use harsh chemicals.
2. Coil Check: Inspect the search coil and cable frequently. Look for cuts, cracks, or damage to the cable connector.
3. Storage: Store the detector in a cool, dry place. If storing it for a long time, charge the battery to about 50% capacity. Do not store the battery fully depleted or fully charged.
4. Shaft Care: Keep the telescopic shaft sections clean. Sand and dirt can cause the carbon fiber sections to stick or wear down the locking mechanisms.

Firmware Updates

Nokta Makro is known for supporting its detectors with frequent software updates. These updates often improve performance, fix bugs, or add new features.

1. Check for Updates: Visit the official Nokta website regularly. They post release notes for new firmware versions.
2. Download Software: Download the required software update tool onto your PC.
3. Connect: Connect the Simplex Ultra to your computer using the supplied USB cable.
4. Install: Follow the on-screen prompts in the software tool to install the new firmware. This process is usually simple and fast.

I strongly recommend keeping your Simplex Ultra updated. New firmware can significantly boost performance, especially concerning ground balancing algorithms.

Troubleshooting Common Issues with the Simplex Ultra

Even the best detectors can sometimes act strangely. Most issues are easy to fix in the field. Here are solutions to common problems you might encounter.

Issue 1: Excessive Chatter or False Signals

This is the most common problem. The detector makes noise even when the coil is still.

Solution:
1. Lower the Sensitivity setting first.
2. Perform a fresh Ground Balance.
3. Check if you are near power lines, invisible dog fences, or other detectors. Move away from these sources if possible.
4. Ensure the coil cable is tightly wrapped and connected.

Issue 2: Poor Depth

You are only finding targets a few inches deep.

Solution:
1. Ensure you are using the correct Search Mode (Field mode usually offers the best depth).
2. Maximize the Sensitivity (refer back to the optimal setting instructions).
3. Check your Ground Balance. If the ground balance number is unstable, the detector is losing depth. Re-balance carefully.

Issue 3: Target ID Numbers Jitter

The ID number on the screen keeps jumping around, especially on deep targets.

Solution:
1. This is normal for very deep targets or those near trash. Sweep slower and try sweeping the coil from different directions (X pattern).
2. If the number jumps between iron (0-15) and non-iron (20+), you likely have a good target next to trash. Listen carefully for the high tone.
3. Ensure your coil height is consistent. Scrubbing the coil on the ground can cause jitter.

Frequently Asked Questions (FAQ)

Is the Nokta Simplex Ultra suitable for a complete beginner?

Yes, absolutely. The Simplex Ultra is one of the best beginner detectors available. It has easy-to-understand menus, preset search modes, and a simplified ground balance process. It offers advanced performance without requiring complicated settings knowledge.

Can I use the Simplex Ultra for gold prospecting?

Yes, the Simplex Ultra includes a dedicated Gold Mode. This mode increases sensitivity to small, low-conductive targets like natural gold nuggets. However, remember that VLF detectors are less specialized for tiny gold than high-frequency machines. It works well for general gold prospecting areas.

How deep can the Simplex Ultra detect a coin?

In average, mild soil, the Simplex Ultra can reliably detect a US dime or quarter at depths between 8 to 10 inches. In perfect, non-mineralized soil, it might reach 12 inches. Depth depends heavily on target size, orientation, and ground mineralization levels.

Does the Simplex Ultra float in water?

No, the Simplex Ultra is waterproof (IP68 rated) and submersible up to 16 feet (5 meters). However, it does not float. You should use a lanyard or strap when detecting in deep water to prevent losing the detector.

What is the difference between the Simplex Ultra and the Simplex Lite?

The Simplex Ultra is the top-tier model. It features the full carbon fiber shaft and includes the wireless module and advanced settings like adjustable Iron Volume. The Simplex Lite is the most basic model, featuring a plastic shaft and fewer features, designed purely for the budget-conscious beginner.

How long does the battery last on a full charge?

The built-in 2300 mAh Lithium Polymer battery typically provides about 10 to 12 hours of continuous detecting time. Using the backlight heavily or using wireless headphones can slightly reduce the overall battery life.

Final Verdict: Why the Simplex Ultra Belongs in Your Gear Bag

The Nokta Simplex Ultra metal detector is a truly exceptional machine. It delivers high-end features and performance at a very accessible price point. The upgrade to the carbon fiber shaft makes a massive difference in comfort and durability. Its ability to handle saltwater beaches and highly mineralized ground makes it incredibly versatile. Whether you are hunting for ancient relics in a field or lost jewelry on the wet sand, the Simplex Ultra performs flawlessly. It is an ideal detector for anyone seeking maximum performance without complexity. I highly recommend the Nokta Simplex Ultra metal detector as your ultimate essential tool for finding more treasure.