What Makes the Garrett AT Gold Special
The Garrett AT Gold operates at 18 kHz, significantly higher than standard detectors that typically run at 7-15 kHz. This high frequency makes it particularly sensitive to small gold nuggets and fine jewelry. The detector’s all-terrain capability means you can use it in shallow streams, along riverbanks, and in mineralized soils where gold often hides.
Unlike general-purpose detectors, the AT Gold includes specialized features for gold prospecting. The Pro Audio mode provides sharper, more responsive target signals that help you distinguish between gold and iron trash. The Ground Balance Window function helps maintain stability in highly mineralized ground, a common challenge when hunting for gold.
Key Features for Gold Hunting
The AT Gold comes with a 5×8″ DD search coil optimized for gold prospecting. This smaller coil provides better sensitivity to small targets and better separation in trashy areas. The Iron Audio feature lets you hear discriminated iron targets, helping you avoid hot rocks and other iron minerals that plague gold fields.
The detector’s manual ground balance control allows you to fine-tune the machine for your specific soil conditions. You can adjust from 0 to 99, giving you precise control over mineralization compensation. The electronic pinpointing feature helps you accurately locate targets once detected, reducing digging time and minimizing damage to the surrounding area.
Setting Up Your AT Gold for Gold Prospecting
Initial Setup and Ground Balancing
Start by setting your discrimination level to zero to hear all targets. Gradually increase discrimination only if you’re in an area with excessive trash. For most gold prospecting, keeping discrimination low helps you hear the subtle signals from small gold nuggets.
Ground balancing is crucial for gold hunting. In highly mineralized ground, take your time to properly ground balance the detector. Pump the coil up and down while listening for the threshold tone to stabilize. You may need to re-ground balance as you move to different areas with varying mineralization.
Audio Settings for Gold Detection
The AT Gold offers both standard and Pro Audio modes. For gold prospecting, use Pro Audio mode, which provides sharper, more responsive target signals. Set your threshold slightly above minimum to hear faint signals from small gold pieces. The threshold should be just audible, creating a slight background hum.
Adjust your sensitivity based on ground conditions. In highly mineralized soil, you may need to reduce sensitivity to maintain stability. Start with maximum sensitivity and gradually lower it until you achieve a stable threshold without excessive chatter or false signals.
Where to Use the Garrett AT Gold
Streams and Rivers
The AT Gold’s waterproof design allows you to search in shallow water up to 10 feet deep. Focus on areas where gold naturally accumulates: inside bends of rivers, behind large boulders, and in crevices along bedrock. Gold is heavy and settles in low spots where water velocity decreases.
When detecting in water, move slowly and keep your coil parallel to the streambed. Use a smaller coil if available, as it provides better maneuverability in tight spaces between rocks. Pay special attention to areas where different soil types meet, as gold often concentrates at these boundaries.
Desert and Drywash Areas
In arid regions, the AT Gold excels at finding gold in drywashes and ancient riverbeds. The high frequency helps detect tiny flakes and small nuggets that other detectors might miss. Look for areas with exposed bedrock, as gold often collects in cracks and depressions.
Use a smaller search coil in these environments to navigate around vegetation and rocks more easily. The AT Gold’s ground balancing capabilities help you handle the often highly mineralized soil found in gold-bearing desert areas.
Advanced Techniques for Better Results
Coil Control and Sweep Speed
Maintain consistent coil height above the ground, typically 1-2 inches. Keep the coil level and parallel to the ground throughout your sweep. Overlapping your sweeps by about 30% ensures you don’t miss targets between passes.
Move at a moderate pace – about 3 feet per second. Too fast, and you’ll miss small targets; too slow, and you’ll waste time. Listen for subtle changes in the threshold tone that might indicate a target. Small gold nuggets often produce faint, whispery signals.
Target Recovery and Pinpointing
When you get a promising signal, use the pinpointing feature to precisely locate the target before digging. This saves time and reduces the size of your holes. The AT Gold’s pinpoint mode is activated by holding the pinpoint button while the coil is over the target.
Dig carefully, especially in areas with potential gold. Use a small hand trowel to minimize ground disturbance. Gold nuggets are often found near iron trash, so don’t be discouraged if you’re digging a lot of nails and other ferrous items.
Maintenance and Care
Regular Maintenance
After each use, clean your AT Gold thoroughly, especially if you’ve been detecting in saltwater or muddy conditions. Rinse the coil and stem with fresh water and dry completely before storage. Check all connections and battery compartments for signs of corrosion.
The search coil can be damaged by rocks and hard impacts. Inspect it regularly for cracks or damage to the housing. Replace the coil cover if it becomes worn to protect the coil itself.
Battery Management
The AT Gold uses four AA batteries. Use high-quality alkaline batteries or rechargeable NiMH batteries for best performance. Carry spare batteries with you, as gold detecting often requires long hours in the field.
Monitor battery strength through the detector’s display. Weak batteries can cause erratic performance and missed targets. Replace batteries when the indicator shows they’re getting low.
Accessories That Enhance Performance
Search Coils
While the standard 5×8″ DD coil works well for most gold prospecting, consider additional coils for specific situations. A smaller 4″ coil provides even better sensitivity to tiny nuggets and works well in tight spaces. A larger 8″ concentric coil covers more ground quickly in open areas with few targets.
Digging Tools
Invest in quality digging tools designed for metal detecting. A good hand trowel with a serrated edge makes cutting through roots and tough soil easier. A long-handled scoop is invaluable for water detecting, allowing you to recover targets without bending over repeatedly.
Headphones
Use headphones designed for metal detecting to hear faint signals better. The AT Gold has a waterproof headphone jack, so you can use submersible headphones for water detecting. Noise-canceling headphones help you focus on the detector’s audio signals in windy or noisy environments.
Common Challenges and Solutions
Dealing with Hot Rocks
Hot rocks are mineralized rocks that produce signals similar to metal targets. The AT Gold’s Iron Audio feature helps you identify these by allowing you to hear discriminated iron targets. Learn to recognize the distinctive sounds of hot rocks versus real metal targets.
In areas with severe hot rock problems, you may need to use a smaller coil and slower sweep speed. Some prospectors use a VLF detector like the AT Gold in conjunction with a pulse induction machine to better handle hot rocks.
Ground Mineralization
Highly mineralized soil is common in gold-bearing areas and can cause false signals and reduced depth. Proper ground balancing is essential. Take your time to find the sweet spot where the detector runs quietly with minimal chatter.
If ground mineralization is extreme, you may need to reduce sensitivity. While this reduces depth slightly, it provides a more stable operation and helps you hear the subtle signals from small gold targets.
Real-World Success Stories
Many prospectors have found significant gold using the Garrett AT Gold. In Arizona’s Bradshaw Mountains, one detectorist found over 3 ounces of gold nuggets in a week using careful grid searching techniques. The high frequency and good ground balancing capabilities of the AT Gold were credited for the success.
In California’s Mother Lode region, a prospector using the AT Gold found several pickers and small nuggets in areas that had been hunted previously with other detectors. The AT Gold’s sensitivity to small targets made the difference in these worked-over areas.
Is the Garrett AT Gold Right for You?
The AT Gold is an excellent choice for serious gold prospectors who want a dedicated gold machine that can also handle general detecting. Its high frequency, waterproof design, and specialized features make it particularly effective for finding small gold nuggets and jewelry.
But if you’re primarily interested in coin shooting or relic hunting, a lower-frequency detector might be more versatile. The AT Gold’s high frequency makes it less ideal for detecting large, deep targets compared to standard machines.
For those committed to gold prospecting, the AT Gold offers a good balance of performance, durability, and price. It’s more affordable than many specialty gold machines while still providing the sensitivity needed to find small gold targets in challenging conditions.