ABR-400 RADIATORS FOR MAGNETIC LOOP & BOOSTER KIT · Radiators & Extensions
A modular radiator, whip, or extension used inside a documented antenna configuration.
Why operators make room for it
Give a modular antenna the length its configuration calls for
A small change in radiator length can open a different configuration without forcing the operator to carry a completely separate antenna.
That is where CHA ABR-400 RADIATORS FOR MAGNETIC LOOP & BOOSTER KIT enters the kit. The CHA ABR-400 Radiators are premium-grade, ultra-low-loss coaxial radiators designed for maximum performance in demanding portable magnetic loop antennas. Engineered with precision and durability in mind, these radiators are available in two lengths— 102 inches and 145 inches —to provide unmatched versatility for your operating style and environment.
Used in a documented configuration, the component gives the operator another practical build option while preserving the electrical, mechanical, and power limits of the complete system.
Quick product reference
Key Specifications
- Product type
- Radiators & Extensions
- Primary role
- A modular radiator, whip, or extension used inside a documented antenna configuration.
- Available length
- 102"
- 146"
- 146" + 8" Coupling Loop (CHA BOOSTER KIT for 15M to 40M)
- Electrical role
- Determined by the part's documented position in the completed antenna
- Compatibility
- Physical fit alone does not prove RF or structural approval
- System position
- Install only in the electrical or mechanical position defined by the completed-system guide
- Interface rule
- Shared 3/8-24 fit does not by itself establish RF, power, or structural compatibility
- Required companions
- Base, loading, feedpoint, mount, support, and radial / counterpoise choices are configuration-specific
Operator decision support
Plan the complete setup
See what this product is best suited for, what the documented setup needs, and the boundaries to confirm before deployment.
- Best for
A small change in radiator length can open a different configuration without forcing the operator to carry a completely separate antenna.
- What else you need
Combine it with the specified base, loading, feedpoint, mount, support, and radial or counterpoise system.
- Compatible with
- CHA F-LOOP 2.0 and 3.0
- Physical fit alone does not prove RF or structural approval
- Shared 3/8-24 fit does not by itself establish RF, power, or structural compatibility
- Limitations
Shared 3/8-24 fit does not by itself establish RF, power, or structural compatibility
What an operator can do
- Use the part as an electrical radiator or mechanical riser only in the position documented by the completed-system guide.
- Combine it with the specified base, loading, feedpoint, mount, support, and radial or counterpoise system.
- Treat a shared thread as physical fit only; verify RF, power, and structural compatibility from an approved configuration.
Complete product details
CHA ABR-400 RADIATORS FOR MAGNETIC LOOP & BOOSTER KIT
High-Performance, Low-Loss Radiators for Serious Operators
The CHA ABR-400 Radiators are premium-grade, ultra-low-loss coaxial radiators designed for maximum performance in demanding portable magnetic loop antennas. Engineered with precision and durability in mind, these radiators are available in two lengths—102 inches and 145 inches—to provide unmatched versatility for your operating style and environment.
Each radiator is custom-manufactured exclusively for Chameleon Antenna by ABR Industries—a trusted leader in coaxial cable production (abrind.com). Built with genuine ABR-400 coax, these radiators deliver superior RF conductivity and extremely low attenuation, which is essential for efficient HF operation.
To ensure optimal performance, both ends of the radiator are pre-shorted at the factory. This design enhances the radiator's ability to act as a highly efficient radiating element, especially important in magnetic loop applications where efficiency and low noise are critical.
Key Features
- Available in Two Sizes: Select 102" or 145" lengths to suit your antenna’s frequency coverage and physical layout.
- Custom Built by ABR Industries: Precision-manufactured in the USA specifically for Chameleon Antenna.
- Ultra-Low Loss: Utilizes authentic ABR-400 coaxial cable for superior signal integrity and minimal power loss.
- Shorted Ends for Maximum Radiation: Factory-shorted ends create a continuous conductive path to optimize radiation performance.
Coupling Loop Compatibility:
- Use a 6" diameter coupling loop with the 102" radiator.
- Use an 8" diameter coupling loop with the 145" radiator. This will create a CHA BOOSTER KIT for the CHA F-LOOP 2.0 and 3.0. This radiator is 46" in diameter and will greatly increase the performances between 15M to 40M.
Weather-Resistant & Rugged: Designed for field use, permanent setups, and demanding portable deployments.
Multi-Application Ready: Ideal upgrade or custom build component for loop antennas like the CHA F-LOOP 3.0 or DIY magnetic loop systems.
Optimize Your Signal
Whether you're operating in a restricted HOA environment, on a remote summit, or from your backyard shack, the CHA ABR-400 Radiators are engineered to give you the edge. Their ultra-low loss construction, paired with the proper coupling loop dimensions, ensures efficient radiation, improved bandwidth, and higher transmitted power—perfect for QRP enthusiasts and serious HF operators alike.
Compatible With:
- CHA F-LOOP 2.0 and 3.0
- Custom magnetic loop builds
- Compact or stealth HF antenna setups
