PHASE III 6225 8' VHF Antenna 6db Gain - Embark upon your next voyage w/ the most technologically advanced antenna we've ever created. . . - Construction Goes High-Tech Phase III antennas embody the ultimate in antenna design, construction and performance. We intend them for discerning, tech-conscious boaters who won't settle for less than the best, most versatile and most attractive antennas. For highest electrical efficiency, performance, and longevity, Phase III VHF and Cellular antennas start with silver-plated elements. They also feature Shakespeare's unique low-angle radiation that puts your signal where it matters most. All of our extra heavy-duty Phase III radomes are completely foam-filled.