All Products Available on GSA Advantage GSA # GS-35F-0606R





One of our best performers, commonly used for Marine VHF Frequency and AIS, you can rely that the GAM TG-3-SH will get the signal where it needs to be. Fully assembled the TG-3-SH stands 87” tall with a gain of 6.6 dBi. This antenna is suitable for both land and sea application and is hermetically sealed in a hardened aluminum canister to ensure life longevity. This American made product is hand wound and factory tuned to ensure peak performance.

  • This antenna can be tuned to any frequency within the 156 – 174 MHz Spectrum
  • Total Length of the Antenna Whip is 33.25″ (MHz Cut Chart is Included)
  • Hand-wound loading coil is factory tuned and tested to insure peak performance at a specified frequency
  • Coil is hermetically sealed to prevent moisture damage
  • No ground plane required


  • GAM Model No. TG-3-SH
  • Length (whip): 33.25″
  • Number of Sections: 2
  • Connector Supplied: SO-239
  • Fully Assembled Dimensions 87” X 2” X 2”
  • Applications: AIS or VHF Marine Band (Cut to Proper Length)
    • Frequency Range: 156 – 174 MHz
    • Cut Length to Proper Frequency for Application
  • Gain: 4.5 dB, 6.6 dBi
  • Max. Output Power: 500 Watts
  • Note: Cable Sold Separately
  • Use RG 58 for runs less than 20 feet
  • Use RG-8X for runs over 20 feet

Additional information

Weight 32 oz
Dimensions 54 × 4.25 × 4.25 in

156-174 MHz

Whip Length



 1.5:1 or less

Gain in DB

 4.5 dbd, 6.6 dbi

Power Rating

500 Watts