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 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)