399-1M 9'6'' VHF Antenna - Aluminum Sleeve For Mast Mounting

Style 399-1m vhf 6 db. Collinear phased 5/8-wave with two coaxial chokes to suppress cable radiation. The style 399-1m is the same as the 399-1, but it has a special sleeve for mast mounting. A professional quality antenna in a compact package. This extra-duty antenna combines strength and performance for use where you really need the efficiency of a large antenna, but don't have room for one. Brass and copper elements. Chrome-plated brass ferrule with standard 1'' inch-14 thread aluminum sleeve for mast mounting. Suggested mount: 1-.25 u-bolts are supplied. The 399-1m can be strapped to a larger mast using steel banding (not supplied). Two sections: base 75'' inch ; tip 39'' inch ups shippable. Technical specifications: frequency: vhf marine band. Bandwidth: (within 2.0:1 swr): 5 megahertz. Swr: 1.5:1 at 156.8 megahertz. Impedance: (ohms): 50. Gain: 6 db. Max input (watts): 100. Dc ground: yes. Termination: so - 239. Height (feet): 9.5". Polarization: vertical. Radiation pattern: omni-directional. Manufacturer: shakespeare. Antenna band = vhf. Cable length (feet) = 15'. Cable type = rg-58. Color = white. Construction = fiberglass. Db gain (db) = 6 db. Ferrule type = chrome plated. Length (inches) = 9'6''.