476 - Shakespeare VHF 21ft Antenna - 10dB Gain | Aztek Computers
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SKU: QSMX2VIEIR |  Mfg. Part: 476  | UPC: 719441100063  | 
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476 - Shakespeare VHF 21ft Antenna - 10dB Gain

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$1,362.95  $1,839.98

Product Overview

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Style 476 VHF 10 dB

The Style 476 antenna is designed to ensure reliable communication when other antennas fall short. Its unique design optimizes the signal for maximum reach in all directions, making it an ideal choice for heavy-duty seagoing applications such as workboats, tugs, and service boats, as well as for land-based stations.

Technical Specifications:

Frequency:VHF Marine band
Bandwidth:(within 2.0:1 SWR): 10MHz
SWR:1.5:1 at 156.8 MHz
Impedance:(ohms): 50
Gain:10 dB
Max Input (Watts):350
DC Ground:YES
Termination:SO-239 connector
Height (feet):21
Polarization:Vertical
Radiation pattern:Omni-directional

Expert Overview

The Shakespeare VHF 21ft Antenna (part number 476) is a specialized marine/air band radio antenna engineered for extended communication range. With a 10 dB gain and omni-directional radiation pattern, this 21-foot antenna is designed to enhance signal reach, particularly in demanding seagoing environments. It is suitable for heavy-duty applications such as workboats, tugs, and service boats, where reliable VHF communication is critical. The antenna's design also supports land-based station use. Featuring brass and copper internal elements and a 6061-T-6 aluminum sleeve, it terminates in an SO-239 connector and is DC grounded. The single-section design facilitates handling during installation, addressing the need for robust, long-range VHF connectivity in challenging operational settings.

Technical Specifications

  • Brass and copper internal elements
  • SO-239 connector at the base
  • 6061-T-6 aluminum sleeve: 2-3/4" diameter x 26" long
  • Designed for direct mast installation or use with Shakespeare Style 483 Clamp Set and Style 484 Wall Mounting Brackets
  • Single-section design for easy handling

Product Details

  • Manufacturer:
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  • ASIN:
  • UPC:
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  • Country of Origin:
  • Shakespeare
  • 476
  • B00PB00T32
  • 719441100063
  • New
  • 40 lbs
  • 252 X 3 X 3
  • Jul 26, 2026
  • May 13, 2021
  • China
Product Identifiers: Brand: Shakespeare • Part #: 476 • UPC: 719441100063 • ASIN: B00PB00T32 • Category: Marine/Air Band Radio Antennas

Frequently Asked Questions

What type of connector does this antenna use?

The Shakespeare VHF 21ft Antenna terminates with an SO-239 connector at its base.

What is the intended use case for this antenna?

This antenna is designed for heavy-duty seagoing applications like workboats, tugs, and service boats, as well as for land-based stations, where extended communication range is required.

What is the gain of this antenna?

The antenna provides a 10 dB gain, optimizing signal for maximum reach in all directions.

How is this antenna typically installed?

The antenna is designed for direct mast installation or can be used with the Shakespeare Style 483 Clamp Set and Style 484 Wall Mounting Brackets.

476 - Shakespeare VHF 21ft Antenna - 10dB Gain

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Reviews for Shakespeare 476

$1,362.95