SCD-225-400

The SAT-225-400C is a high-performance, military-grade UHF SATCOM Ground-to-Air Circular Polarized Yagi Antenna designed for the 225–400 MHz spectrum. Engineered for mission-critical satellite communication, this ruggedized crossed-element array utilizes Right Hand Circular Polarization (RHCP) to ensure rock-solid link stability with orbital assets. Delivering a potent 10 dBic gain in a compact, weather-hardened form factor, the SAT-225-400C is the definitive choice for tactical ground stations requiring precise directional control and high-power throughput.

Design: Precision SATCOM & Aero Intercept

The SAT-225-400C is optimized for fixed-site and tactical installations where high-gain directional precision is required for long-range communications.

• Full 225–400 MHz Coverage: Precision-tuned to cover the entire military UHF SATCOM and aeronautical band. It is fully compatible with modern tactical Multi-Band Multi-Mode Receivers (MBMMR) and high-power ground transceivers.
• 10 dBic RHCP Dominance: Utilizing Right Hand Circular Polarization (RHCP), the antenna eliminates "Faraday Rotation" and polarization fading. This ensures a stable, high-fidelity link with maneuvering aircraft and satellites in low or high earth orbits.
• Focused Directional Pattern: With a 55° Horizontal and 50° Vertical beamwidth, the SAT-225-400C concentrates RF energy toward the target, significantly increasing the effective communication range while maintaining a 17 dB Front-to-Back ratio.
• High-Power 250W Capacity: Designed for sustained transmission, the array manages up to 250 Watts of RF power, supporting secure voice, high-speed data links, and satellite-uplink missions.

Construction: Ruggedized & Deployable

Built for 24/7 survivability in the world’s most hostile environmental theaters.

• Aerospace-Grade Materials: Constructed from architectural 6063T6 ultra-corrosion resistant aluminum alloy. The array is finished with a protective powder coating to withstand UV radiation, salt fog, and acid rain.
• Balanced for Mobility: At only 4 Kgs and 1.5 meters in length, the antenna is balanced at its center of gravity. This minimizes the load on Azimuth/Elevation rotators, ensuring smooth scanning and tracking.
• Marine-Grade Hardening: All assembly fasteners and mounting brackets are made of Type 316 stainless steel, preventing oxidation in high-salinity coastal or shipboard environments.
• Flexible Tactical Mounting: Includes specialized hardware for rotator mounting at a 45-degree angle. For static deployments, an optional crossover mounting plate is available for fixed mast-top installation.
• Weather-Shielded Termination: Features a robust N-Female connector fixed directly to the dipole for a low-loss, weather-resistant coaxial feed.

Technical Features

• Unified SATCOM Solution: High-gain performance across the critical 225–400 MHz tactical window.
• Superior Polarization Purity: A 3 dB axial ratio ensures maximum signal coupling for satellite tracking.
• 170 Km/Hr Wind Rating: Sturdy mechanical design ensures structural integrity during severe storms.
• Tactical Portability: Lightweight 4 Kg build allows for rapid setup by a single operator.

• MIL-SPEC Environmental Tolerance: Operates reliably in extreme temperatures ranging from -30°C to +70°C.