Shakespeare 5399 9'6" VHF Antenna - Two Piece 
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Shakespeare Galaxy Style 5399 9'6" VHF 6dB Gain Collinear-phased 5/8 wave with two coaxial chokes to suppress cable radiation
This professional quality antenna is a performance powerhouse. Its extra strong sturdy enough to be self-supporting, even in high winds and high speeds. Mounting on radar arch or T-top not recommended.
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: Use only Shakespeares extra heavy-duty Style 4187-HD Rachet Mount for self-supporting applications, or use a Style 452 mounting kit if an upper support bracket installation is preferred