Rugged Radios 6in Ground Plane Disc for Antenna Mounting

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The Rugged Radios GP-DISC-6 is a 6-inch alloy ground-plane disc for mounting ground-plane antennas on aluminum, fiberglass or plastic roofs that lack the metal surface an antenna n eeds to work properly.Specifications 6 in diameter alloy ground-plane disc Four 3/8 in holes for incremental antenna positioning For ground-plane antennas on non-metal (aluminum/fiberglass/plastic) roofs InstallationFor best performance, mount the disc on top of the roof with the antenna on top of the disc. It can be installed on the underside, with some loss of performance.Frequently Asked QuestionsWhen do I need a ground-plane disc?When mounting a ground-plane antenna on an aluminum, fiberglass or plastic roof that does not provide the metal ground plane the antenna requires.Where should it be mounted?On top of the roof with the antenna atop the disc for best performance; underside mounting works with reduced performance. Show more