Product Overview
4' Phase III 3dB AIS Antenna

Ensure crystal-clear AIS communication and enhanced safety on the water with the Shakespeare 4' Phase III 3dB AIS Antenna. Engineered for superior performance and durability, this antenna delivers reliable transmission and reception on marine AIS frequencies, giving you the peace of mind you need to navigate confidently. Built with high-quality components and featuring a sleek, durable design, this antenna is a must-have upgrade for any vessel.
Key Features
- **Enhanced AIS Performance:** Specifically tuned for AIS transceivers, ensuring optimal communication on marine AIS frequencies.
- **Durable Construction:** Features a thick fiberglass radome with a high-gloss, white polyurethane finish that resists yellowing and provides long-lasting protection.
- **Maximum Range and Clarity:** Silver-plated elements maximize signal range, clarity, and efficiency for superior AIS reception and transmission.
- **Rust-Resistant Mounting:** Stainless steel mounting sleeve ensures lasting durability and prevents corrosion in harsh marine environments.
- **Easy Installation:** SO-239 quick connect allows for easy removal or installation without the need to twist or reinstall the coax cable.
- **Vibration Isolation:** Ethafoam spacer system isolates the radiators from vibration, ensuring consistent and dependable long-term performance.
- **Reliable Connection:** 12-sided facet indexes and prevents rotation during installation, maintaining a secure and stable connection.
- **8-Year Warranty:** Backed by Shakespeare's commitment to quality and reliability.
Specifications
The Captain's Take
After years navigating busy waterways, I've learned the value of a reliable AIS system. The Shakespeare 4' Phase III AIS Antenna is a game-changer. Its superior reception and transmission capabilities give me unmatched situational awareness, allowing me to avoid potential collisions and navigate with confidence, even in challenging conditions. I highly recommend this antenna to any captain who values safety and peace of mind.