Retail Security Antennas: Range, Coverage, and Quantity (AM and RF).

Introduction

When it comes to securing your store, understanding the exact range of your AM (Acousto-Magnetic) and RF (Radio-Frequency) antennas is crucial. Too few antennas, and you risk leaving coverage gaps that can allow theft. Too many, and you end up spending more than necessary. This article provides a visual breakdown of antenna reach, helping you plan optimal placement to maximize coverage and minimize interference. With Bullseye Protection’s self-installation packages and expert guidance, you’ll be ready to deploy the right number of antennas with precision.

AM and RF Systems: Which One is Right for You?

Both AM (Acousto-Magnetic) and RF (Radio-Frequency) systems offer reliable anti-theft solutions, but each has unique strengths suited to different store environments. AM systems use magnetic fields and have a detection range of 8–10 feet (2.5–3 meters). They perform exceptionally well with products that contain metallic packaging, making them ideal for apparel stores or electronics retailers. RF systems use radio waves with a typical detection range of 5–6.5 feet (1.5–2 meters). They are cost-effective, making them a great option for bookstores, grocery stores, and pharmacies with standard-sized entrances.

Visualizing the Reach: How Antennas Cover Your Store

Graphical Overview of AM System Coverage

Imagine an entrance that spans 30 feet. With AM antennas placed every 10 feet, only 3 antennas are needed to fully cover the entrance.

AM Range Example:

• Store Entrance Width: 30 feet
• Placement: Antennas at 0 ft, 10 ft, and 20 ft
• Detection Overlap: Minimal overlap ensures smooth detection with no blind spots.

Visual Aid: Picture concentric circles or ovals representing each antenna’s range, overlapping slightly at the edges to ensure seamless coverage.

Graphical Overview of RF System Coverage

For the same 30-foot entrance, RF antennas must be placed closer together due to the shorter range. You’ll need 5 antennas to cover the same span effectively.

RF Range Example:

• Store Entrance Width: 30 feet
• Placement: Antennas at 0 ft, 6.5 ft, 13 ft, 20 ft, and 26 ft
• Detection Overlap: Each antenna overlaps more, but this reduces the risk of gaps.

Visual Aid: Think of smaller overlapping circles, placed more frequently, ensuring no item can slip through undetected.

Placement Recommendations for Maximum Detection

AM Systems:

• Position antennas up to 10 feet apart.
• Recommended for wide-open entrances or multiple exit points.
• Works well in stores with high-value products, like fashion or electronics.

RF Systems:

• Place antennas every 5 to 6.5 feet for best results.
• Ideal for smaller entrances and stores with checkout-based layouts.
• Be mindful of metal shelving—adjust placement to avoid interference

Monitoring and Support with Bullseye Protection

Even with the perfect placement, routine testing and maintenance ensure your antennas perform at their best. Simulate theft attempts regularly to ensure no items escape detection. With Bullseye Protection, whether you choose self-installation packages or need ongoing support, we’re here to guide you through the entire process—from planning and setup to troubleshooting and maintenance.

Conclusion

Securing your store starts with understanding the exact reach of your AM or RF antennas. Either for hard tags, or EAS labels, AM systems offer a longer range and are ideal for larger spaces, while RF systems provide cost-effective solutions for smaller stores. With the right placement, you can create a seamless detection zone that leaves no room for theft. At Bullseye Protection, we provide self-installation packages and expert guidance before, during, and after installation, so your store stays protected every step of the way. Whether you need help planning your setup or troubleshooting remotely, we’re here to ensure your security system works exactly as it should.