Extension Masts - Heavy Duty, 4 ft. Antenna Extension

The 4008 Series Extension Masts are manufactured of the same Shakespeare fiberglass reinforced composites as their fine antennas. Use extensions to increase the height of any antenna, thus effectively increasing its range.
Extensions also serve to raise antennas to avoid onboard obstructions or sources of signal interference.

• Heavy-duty 1-1/2" construction with chrome-plated brass ferrules, yet light in weight
• Standard 1"-14 threads
• Suggested mounts: style 409 or 410 2-part mounting kit suggested on 4 ft extension and required on longer extensions