Galaxy 5018 15' 2" VHF Antenna - 9dB GainThis highly sophisticated design is outstanding for long distance communications. Extra rugged for salt water durability, and stability in high seas. Surprisingly light weight. Features: Phased 1/2 wave elements in a collinear array with choking sleeve to suppress cable radiation; Brass and copper elements for maximum range and efficiency; Stainless steel ferrule with standard 1"-14 thread; 20' RG-8/X low-loss cable plus a PL-259 connector; Suggested Mount: Shakespeare Style 409-R or 410-R Mounting Kit (pictured mount not included); Two sectiions; 5 Year Warranty; Technical Specifications: Gain: 9dB; Frequency: VHF Marine Band; Bandwidth: (within 2.0:1 VSWR) 3 MHz; SWR: 1.5:1 at 156.8 MHz; Max Input (Watts): 150W; DC Ground: NO; Height (Feet): 15'2"; Polarization: Vertical; - cis2:mm5mnJlm -Specifications: Antenna Band: VHF; Color: White; Construction: Fiberglass; Ferrule Type: Stainless Steel; Length (Inches): 180"; Box Dimensions: 4"H x 4"W x 95"L WT: 5.3 lbs; UPC: 719441200091; Brochure (pdf)