AG3-150

The AG3-150 is a professional-grade, 5/8 wavelength ground plane antenna engineered for the 136–174 MHz VHF spectrum. Constructed from high-class chrome-plated brass, this rugged all-weather model is optimized for base station applications requiring high efficiency and wide-area coverage. With a stable 3 dBi gain and specialized inter-modulation suppression, the AG3-150 is a premier choice for tactical, maritime, and public safety VHF networks.

Strategic Construction & Signal Purity

Hardened materials for zero-maintenance operational life. The AG3-150 utilizes an all-brass architecture to prevent the formation of "Signal Cells." This critical design feature eliminates internal inter-modulation, ensuring that the antenna remains electrically "clean" even during high-power broadcasts. The radiator and ground plane are finished with high-class chrome plating, providing an elite layer of protection against corrosive atmospheric gases, salt spray, and UV radiation. All mounting hardware is fabricated from marine-grade stainless steel.

Operational Efficiency

5/8 Wavelength design for enhanced gain and consistent "Null Fill." By utilizing a 5/8 wavelength design, the AG3-150 provides a higher gain profile compared to standard 1/4 wave antennas, while maintaining a wide 70-degree vertical beamwidth. This aperture ensures a consistent signal link for ground-level units and assets at varying elevations. For maximum survivability, the N-Female termination and feed cable are completely enclosed within the mounting pipe, shielding the most vulnerable electrical connections from moisture and mechanical strain.

Detailed Technical Features

• VHF Band Optimization: Targeted performance for the 136–174 MHz range, ideal for high-band VHF tactical and commercial communications.
• 5/8 Wavelength Radiator: Provides superior gain and radiation efficiency for enhanced signal reach and clarity.
• Chrome-Plated Brass Core: Offers exceptional electrical conductivity and maximum environmental resilience in humid or coastal theaters.
• Inter-Modulation (IM) Suppression: Prevents internal diode effects to maintain a clean RF environment for co-located receivers.
• Vertical Pattern Precision: A 70° vertical beamwidth maintains stable link integrity for mobile units in rugged or urban terrain.
• Weather-Shielded Feed: Internalized cable routing through the support pipe provides 100% protection for the N-Female connector.
• High-Power Capacity: Facilitates up to 250 Watts of continuous RF power for robust broadcasting.
• Tactical Logistics: Ground radials are removable, simplifying the shipping process and allowing for rapid field assembly.

Environmental Specifications

The AG3-150 is built to survive the world's most demanding mission parameters:

• Operating Temperature: Certified for mission-critical use from -30°C to +70°C.
• Storage Resilience: Safe for non-operational storage in temperatures ranging from -40°C to +80°C.
• Humidity Defense: Fully functional in 0 to 95% Relative Humidity, suitable for tropical and high-salinity theaters.
• Aerodynamic Wind Rating: Specifically engineered to survive constant winds up to 200 Km/Hr.

Key Advantages, Benefits & Applications

Key Advantages:

• Signal Fidelity: The brass and chrome construction ensures absolute signal purity at high power levels.
• Maintenance-Free: Rugged, factory-calibrated design eliminates the need for field tuning or periodic adjustments.
• Boresight Stability: The 5 mm stainless steel whip and nylon coil housing ensure the antenna maintains its mechanical and electrical center in high winds.

Key Applications:

• VHF Base Stations: Primary communications link for emergency services, military outposts, and security centers.
• Maritime Security: Ruggedized construction and chrome plating make it ideal for shipboard mounting and coastal installations.
• Critical Infrastructure: Reliable 360-degree coverage for refineries, transport hubs, and remote monitoring sites.
• Tactical Signal Intercept: Serving as a high-sensitivity monitoring probe for VHF regulatory scanning.