Davis Instruments AV Antenna Mount Wind Vane Windex

Davis Instruments AV Antenna Mount Wind Vane Windex. The secret is in the sapphire jewel suspension bearing large fin-low inertia vane and easy-to-read fully adjustable tacking tab system.WindTrak AV installs onto most whip antennas including Metz and Shakespeare brands with a whip diameter less than 1/8" (3 mm). Combine two installations into one to reduce masthead clutter weight and windage aloft. Rides on low-friction Teflon bearings. Complete with 15" (38 cm) vane reflective tacking arms har