Hello detectorist!

Today we're taking a closer look at the heart of your Garrett AT Max, a metal detector known for its durability and reliability. Whether you're a new user or simply want to get the most out of your machine, this guide is for you.

We'll explore the native search programs, the factory preset settings that allow you to start detecting right away.

Always remember to follow local regulations and obtain any necessary permissions before conducting metal detecting activities.

The Operating Frequency of Your AT Max

Before diving into the search modes, it's useful to understand that the Garrett AT Max operates on a single frequency of 13.6 kHz.

This frequency provides an excellent balance for detecting a wide variety of targets, from coins to jewelry, across different ground conditions.

Unlike newer detectors that use simultaneous multi-frequency technology, the AT Max focuses on optimizing this single frequency to deliver solid and reliable performance.

The Native Search Programs of the Garrett AT Max

Your Garrett AT Max offers four primary search modes, selectable using the MODE button.

Each one is designed for different situations, but all can serve as a starting point for your detecting adventures.

1. Custom

This mode is intended for more experienced users or those with specific requirements.

Custom mode is fully configurable, allowing you to adjust discrimination, sensitivity, Iron Audio, and notch settings, then save those settings for future use.

What it's for:

It allows you to create a search profile tailored to your preferred terrain or specific target type.

Ideal environments:

Any type of ground, once properly adjusted

Ideal targets:

Any target type depending on your discrimination settings
Modern coins
Jewelry
Trash-heavy environments where selective target filtering is beneficial

2. Coins

As the name suggests, this mode is specifically configured for coin hunting.

It is one of the best starting points for most detectorists.

What it's for:

It automatically rejects most ferrous objects and common trash, focusing on targets with medium to high Target ID values, generally between 50 and 99.

This helps reduce false signals and allows you to concentrate on potentially valuable finds.

Ideal environments:

Public parks
Modern agricultural fields
Recreational areas containing modern metallic debris

Ideal targets:

Modern coins
Rings
Small jewelry items

3. Zero (Zero Discrimination)

This is the most open search mode available.

With Zero Discrimination enabled, your AT Max detects all metals without applying any filtering.

Both ferrous and non-ferrous targets will be reported.

What it's for:

It provides maximum detection depth and ensures that no targets are filtered out, including objects with extremely low or extremely high conductivity.

It is particularly useful when you want a complete understanding of what is present beneath the coil.

Ideal environments:

Beaches (above water)
Highly mineralized ground
Sites where maximum depth is desired
Areas being completely cleared of metallic targets

Ideal targets:

All metallic objects
Gold jewelry
Silver jewelry
Iron objects that may be interesting because of their shape or size

4. Relics

Although the name may suggest historical artifact hunting, within the context of responsible hobby detecting this mode is intended for locating a broader range of metal objects in challenging ground conditions.

It is frequently recommended for mineralized terrain.

What it's for:

Relics mode generally uses a more open discrimination pattern than Coins mode, allowing the detector to respond to a wider variety of targets, including partially corroded or irregularly shaped metal objects.

This reduces the risk of missing valuable or unusual targets.

Ideal environments:

Modern agricultural fields with elevated mineralization
Areas where metallic objects of varying size and composition may be present

Ideal targets:

Everyday metal objects
Lost tools
Buckles
Buttons
Various modern metallic items

Customizing and Saving Programs

One of the strengths of the Garrett AT Max is that every preset program can be modified.

You can adjust:

Sensitivity
Discrimination
Iron Audio
Notch settings

to better suit current ground conditions.

If you discover a combination that performs particularly well for a specific site or search style, you can save it in Custom mode.

This allows you to instantly recall your preferred setup without re-entering the settings each time.

Which Program Should Beginners Start With?

If you're new to the Garrett AT Max, I recommend starting with Coins mode.

It is an excellent all-purpose program that helps you become familiar with the detector's audio responses while filtering out much of the common trash.

As your experience grows, you can begin experimenting with:

Zero mode for maximum depth
Custom mode for personalized configurations

and further refine your search techniques.

Looking for a Custom Setup for Your Garrett AT Max?

Optimal settings vary depending on terrain conditions and target types.

With Drusilla.ai's Program Intelligence, you can generate customized 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 designed for field use, and Restricted Areas, an informational tool that helps identify potential restrictions within search locations.

Please note that Restricted Areas is an informational resource 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.