Skip to content Skip to navigation menu
Live Chat

21' (6.40 M) VHF Marine Band 10dB Antenna


Truck Freight
Model # 297676 | Mfg # 476
Ships directly from the vendor

Phased ½-wave elements in a collinear array with a broadband matching section, and a coaxial choking sleeve

Designed to get the message through when all others fail. Its unique design puts the signal on the horizon, providing gain in all directions. For heavy duty seagoing applications, such as workboats, tugs, tidal well service boats, etc. An excellent choice for land-based stations.

  • Brass and copper internal elements
  • SO-239 connector at the base
  • Mount: The 476 has a 2.75in diameter x 26in long 6061-T-6 aluminum sleeve which can be strapped directly to a mast or used with Shakespeare Style 483 Clamp Set or Style 484 Wall Mounting Brackets (each sold separately)
  • One section
  • 10dB Gain

21' (6.40 M) VHF Marine Band 10dB Antenna

Best Use Commercial VHF
Elements Brass & Copper
Gain 10 Decibels
Lead No Cable
Length 21'
Material Fiberglass
Warranty Details Two Years

West Advisor

The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.