Hello detectorist!

You've just unboxed your new Golden Mask GM7 and can't wait to start exploring? Excellent choice!

The GM7 is a powerful and versatile detector, but like any advanced tool, it takes a little practice to unlock its full potential.

Don't worry, you don't need to become an expert overnight. This guide is designed specifically for beginners and will help you take your first steps with confidence and enjoyment.

We'll cover what to do when you first take it out of the box, which settings matter most at the beginning, and how to become familiar with its audio responses.

Getting Started with Your Golden Mask GM7

When you open the box, the first step is assembling your detector.

The process is straightforward:

Assemble the Shaft and Search Coil
Connect the shaft sections securely.
Attach the search coil to the lower shaft.
Install the Control Unit
Secure the control box to the shaft in a comfortable operating position.
Connect the Coil Cable
Wrap the cable neatly around the shaft.
Connect it firmly to the control unit.
Ensure the connector is properly tightened to prevent false signals caused by cable movement.
Power On
Locate the power button.
Press and hold it to start your GM7.

Once powered on, you're ready for the first setup procedure.

Ground Balance: The Most Important Step

Before starting any search, Ground Balance is essential.

Ground Balance compensates for ground mineralization, which can vary dramatically and significantly affect detector performance.

A proper Ground Balance improves:

Detection depth
Stability
Target identification

The Golden Mask GM7 provides several Ground Balance options:

Auto

The simplest and fastest method.

Pump the coil between approximately 5 cm and 30 cm above the ground until the displayed values stabilize.

FX Mode

This is generally the recommended primary option for the GM7.

It is designed to provide excellent performance and stability across a wide range of conditions, including:

Mineralized ground
Wet sand
Clay-rich soils

Beginner Recommendation

Start with FX Mode.

If conditions are particularly difficult or unstable, experiment with Auto Ground Balance.

Always perform Ground Balance away from metallic objects.

Important: Whenever you change search programs or frequencies, perform Ground Balance again.

Which Settings Should You Adjust?

The GM7 offers many options, but beginners should focus on the settings that provide the greatest immediate impact.

Frequency

The GM7 can operate at:

4 kHz
14 kHz
24 kHz
44 kHz

4 kHz: better for larger, deeper targets, less sensitive to tiny objects. 14 kHz: excellent all-around frequency, suitable for general detecting. 24 kHz: good for medium-sized targets, performs well in moderately mineralized ground. 44 kHz: excellent for tiny low-conductive targets, ideal for small jewelry.

Beginner Recommendation

Start at 14 kHz.

It offers excellent versatility and allows you to detect a broad range of targets.

Sensitivity

Sensitivity controls how responsive the detector is.

Higher Settings: greater depth, more noise, increased false signals.
Lower Settings: less depth, better stability, fewer false signals.

Beginner Recommendation

Never start at maximum sensitivity.

Begin at a moderate level and gradually increase it until you hear a slight background chatter.

Then reduce it slightly to regain stability.

If the detector becomes unstable, lower the sensitivity.

Discrimination

Discrimination allows unwanted targets, particularly iron, to be filtered.

Low Values (0-5): detects almost everything, excellent for learning target responses. High Values: rejects more iron, may also reject desirable low-conductive targets.

Beginner Recommendation

Use a low discrimination setting between 0 and 5.

This helps you learn the difference between ferrous and non-ferrous responses.

Volume

Simply adjust to a comfortable listening level.

Tone Modes

The GM7 offers different tone configurations.

2 Tones: low tone for iron, high tone for non-ferrous targets.
3 Tones: adds a middle tone for medium-conductive targets.

Beginner Recommendation

Start with 2 Tones.

It is the easiest system to learn and quickly teaches target categories.

Which Settings Should Beginners Leave Alone?

For your first outings, avoid modifying the following:

Boost

Acts as a signal amplifier.

Higher values may cause instability when combined with other aggressive settings.

Leave it at the factory default.

Disc. Depth

This unique Golden Mask feature controls the depth at which discrimination is applied.

Leave it at the default value (typically 10).

N.F. Tone and F. Tone

These settings customize ferrous and non-ferrous audio frequencies.

Use the factory defaults until you gain more experience.

Recommended Setup for Your First Hunts

For beginners, the recommended starting point is:

Program: PARK
Frequency: 14 kHz
Sensitivity: moderate level, typically around 80-90, reducing it if excessive false signals occur.
Discrimination: 0-5
Ground Balance: always perform Ground Balance using FX Mode before beginning.

Remember: every time you change programs, Ground Balance should be repeated.

Three Practical Exercises to Learn the Sounds

1. The Table Test (Air Test)

Place your GM7 on a table away from metal objects.

Collect:

A coin
A ring
A pull tab
An iron nail

Pass each object beneath the coil at approximately 10-15 cm.

Listen carefully to the audio responses and observe the VDI values.

You'll begin building a mental library of target sounds.

2. The Test Garden

Create a small practice area.

Bury several objects at shallow depths between 5 and 10 cm.

Sweep over them repeatedly and observe:

Audio responses
VDI numbers
Effects of varying depth

This provides a far more realistic training experience than air testing.

3. The Listening Walk

Visit a legal park or open beach.

Use:

PARK mode
14 kHz
Medium sensitivity
Low discrimination

Instead of digging immediately, focus on listening.

Try distinguishing:

Low, rough iron tones
Cleaner non-ferrous signals

Dig only the strongest and most repeatable signals.

This develops your detecting "ear."

Common Beginner Mistakes

Avoid these frequent errors:

Sweeping Too Fast

The detector needs time to process signals.

Use slow, controlled sweeps.

Skipping Ground Balance

Poor Ground Balance is one of the main causes of instability and poor performance.

Excessive Sensitivity

Maximum sensitivity often creates frustration rather than better finds.

Excessive Discrimination

High discrimination can eliminate desirable targets.

Ignoring Weak Signals

Weak signals may indicate deep or valuable targets.

Not Using Headphones

Headphones greatly improve your ability to hear faint target responses.

Always remember to comply with local regulations and obtain any required permissions before conducting metal detecting activities.

Looking for a Custom Setup for Your Golden Mask GM7?

Optimal settings vary according to:

Ground conditions
Target types
Environmental interference

With Program Intelligence from Drusilla.ai, you can generate customized search programs simply by specifying:

Your search type
Ground conditions
Sources of interference

You'll receive a setup specifically optimized for your situation.

Registration is completely free and requires no credit card.

The Pro plan also unlocks Field Companion, a real-time AI assistant for field use, and Restricted Areas, an informational tool for checking search locations.

Restricted Areas is provided for informational purposes only and does not replace consultation with heritage agencies, archaeological authorities, or local government institutions.

Verification of regulations and compliance with applicable laws remain entirely the responsibility of the user.