SCD-243-318

The SCD-243-318 is a ruggedized, military-grade Omni-Directional Coaxial Dipole UHF Aviation Band Antenna specifically designed for the 243–318 MHz frequency range. This specialized aperture is engineered for high-reliability applications including Air Traffic Control (ATC), ground-to-air communication, and tactical SATCOM links. Featuring an integrated coaxial dipole design that suppresses skin current for superior VSWR stability, the SCD-243-318 provides 360-degree situational awareness and high-power handling in a compact, weather-shielded form factor.

Design: Precision Aero-Band Communication

The SCD-243-318 is optimized for mission-critical hubs requiring consistent signal propagation to high-elevation assets and long-range ground stations.

• Targeted 243–318 MHz Spectrum: Precision-tuned for the military UHF aviation and SATCOM bands. This allows for clear, uninterrupted coordination between ATC sites, tactical mobile units, and naval vessels.
• High-Power 500W Handling: Built for high-intensity, continuous-duty transmission. At 500 Watts, it ensures robust signal penetration even in congested RF environments or over significant tactical distances.
• Exceptional 78° Vertical Beamwidth: The wide vertical aperture is specifically designed for ground-to-air coverage. It maintains a stable link with aircraft from the moment they appear on the horizon through high-elevation flyovers.
• Skin Current Suppression: The coaxial dipole architecture effectively suppresses skin current, ensuring a smooth, stable VSWR better than 2:1 across the entire bandwidth without the need for field tuning.

Construction: MIL-SPEC Hardening & Marine Durability

Built to survive the most punishing environmental conditions, from arctic ice formation to corrosive naval salt spray.

• Rugged ABS Radome: All radiating elements are fully welded and enclosed within a high-strength, UV-stabilized ABS radome. This 110 mm diameter enclosure is RF-transparent and provides an aesthetically pleasing, low-drag profile that minimizes ice buildup.
• Aerospace & Marine-Grade Materials: Radiating elements are crafted from architectural 6063T6 aluminum alloy. Mounting hardware is composed of Type 316 marine-grade stainless steel, ensuring immunity to oxidation in coastal and shipboard applications.
• Weather-Protected Signal Path: The N-Female termination is located at the bottom of the mounting pipe, shielding the critical RF connection from moisture, dust, and mechanical stress.
• Tactical Mobility & Fixed Install: At only 850 mm (33.5 inches) long and 5 Kgs, the antenna is suitable for permanent ATC installations, rapid-deployment tactical masts, and shipboard mounting.

Technical Features

• Unified UHF Aero Coverage: Optimized for the 243–318 MHz spectrum.
• True Omni-Directional Pattern: Consistent 360-degree horizontal radiation for total situational awareness.
• 3 dBil Linear Gain: Provides the necessary gain for long-range aeronautical links.
• MIL-STD-810G Certified: Rigorously tested for shock, vibration, salt fog, rain, and extreme temperatures.
• 200 Km/Hr Wind Rating: Sturdy mechanical design ensures structural integrity in severe weather.
• High Reliability: Fully welded internal elements prevent RF inter-modulation (PIM) and mechanical failure.

EW, SIGINT & Monitoring Compatibility

The SCD-243-318 is a specialized asset for electromagnetic support and spectrum dominance:

• Electronic Attack (EA): The 500W power rating allows for high-intensity 360-degree jamming of military UHF aviation and SATCOM channels.
• Signals Intelligence (SIGINT): The fully welded construction and high-grade materials minimize PIM, providing a quiet noise floor for intercepting weak aero-band transmissions.
• Surveillance: The wide 78° vertical beam ensures persistent tracking of aircraft from the horizon to nearly overhead, essential for continuous monitoring missions.