"Phased 1/2 wave elements in a collinear array with coaxial choking sleeve to suppress cable radiation. The top choice for charter boat captains and experienced sport fishing enthusiasts. This long distance VHF antenna is rigid enough to stand erect in rough seas, yet exceptionally lightweight. Brass and copper elements, chrome-plated brass ferrules, includes 20' RG-58 cable and a PL-259 connector. Two sections: base 162", tip 66". Suggested mount: 409 or 410 mounting kit for deck or side mounting."