Radar Dome Covers — Protective Covers for Marine Systems

UV-resistant ASA/ABS and PETG are the most common choices for marine radome applications. ASA/ABS offers exceptional UV stability and impact resistance, making it ideal for prolonged sun exposure on deck installations. PETG provides excellent chemical resistance to saltwater and maintains good signal transparency for radar frequencies. We evaluate your specific requirements—including operating environment, signal frequency, impact concerns, and budget—to recommend the optimal material. Both materials can be thermoformed to precise dimensions and maintain structural integrity in harsh maritime conditions including temperature extremes, constant vibration, and corrosive saltwater spray.

For prototypes, we can often deliver initial radome covers in 3-4 weeks after design approval, using low-cost wood or polyurethane tooling for rapid validation. This allows you to test fit, mounting, and signal performance before committing to production tooling. Once prototypes are approved, aluminum production molds typically require 4-6 weeks to fabricate. After production tooling is complete, manufacturing lead times depend on order volume—ranging from days for small quantities to a few weeks for large runs. Our 4'x7' rotary thermoforming machine significantly accelerates high-volume production with cycle times 2.5 times faster than standard equipment.

Yes, Hill Plastics supports projects from initial prototype through high-volume manufacturing. We use cost-effective wood or polyurethane tooling for prototypes and pre-production validation, allowing design changes without expensive mold rework. Once your design is finalized, we transition to durable aluminum casting tooling for production runs. Our facility houses eight thermoforming machines ranging from 2'x3' to 5'x9', plus a 4'x7' rotary thermoformer for efficient high-volume production. With over 20,000 square feet of manufacturing space and experienced staff, we scale seamlessly from a few prototype units to thousands of production radomes while maintaining consistent quality and dimensional accuracy.

Our thermoforming capacity ranges from 2'x3' up to 5'x9', accommodating most standard marine radar installations. The specific size depends on your radar antenna dimensions, mounting requirements, and clearance needs. Our engineering team works with your specifications to design radome covers that provide adequate protection while maintaining proper signal clearance. For larger installations or unusual configurations, we can often fabricate sectional radomes or use our CNC trimming capabilities to produce custom shapes. During the design consultation phase, we'll review your dimensional requirements and recommend the most cost-effective manufacturing approach for your specific radar system size.

When properly designed with appropriate materials, thermoformed radome covers have minimal impact on radar signal performance. We select materials with favorable dielectric properties that allow electromagnetic signals to pass through with minimal attenuation or distortion. Material thickness, composition, and surface finish all influence signal transparency, which is why we work closely with customers during material selection to balance protection requirements with signal performance needs. For critical applications, we recommend prototype testing to validate signal transmission before production. Our engineering team can also incorporate design features such as optimized wall thickness and smooth interior surfaces to maximize signal clarity.

Material selection is critical for marine durability. We specify UV-resistant formulations like ASA/ABS that include UV stabilizers to prevent degradation from constant sun exposure. For saltwater resistance, we choose materials with excellent chemical compatibility that won't corrode, crack, or lose mechanical properties when exposed to saline environments. During manufacturing, we control wall thickness to ensure structural integrity and impact resistance. Our quality control process inspects each radome for surface defects, proper wall distribution, and dimensional accuracy. Additionally, we can recommend surface treatments or coatings for enhanced protection. With 45 years of experience producing enclosures for harsh environments, we understand the material science required for long-term marine performance.

Our precision CNC trimming capabilities allow extensive customization for mounting hardware and installation requirements. We can drill mounting holes to exact specifications, create fastener clearances, add threaded insert positions, and perform edge finishing for gasket sealing. If your installation requires specific base flanges, cable entry points, or ventilation features, our fabrication department can incorporate these during secondary operations. We work from your drawings or can assist with design development to ensure the radome cover integrates properly with your vessel's radar mounting system. Our goal is delivering installation-ready protective covers that fit correctly the first time, reducing field modification and installation time.

Hill Plastics maintains a comprehensive quality control system that monitors production progress through all manufacturing stages. Each radome undergoes inspection for dimensional accuracy against print specifications using precision measuring equipment. We verify wall thickness distribution, surface finish quality, and proper material forming. CNC-trimmed edges and mounting features are checked for accuracy and cleanliness. For production runs, we implement first-article inspection and periodic in-process checks to ensure consistency across all units. Our experienced staff—many with over 20 years tenure—apply industry expertise to identify and correct any variations. This rigorous approach ensures every radar dome cover meets appearance standards and functional specifications before shipment.