This adapter allows you to use a standard 3/8x24 thread antenna whip, spring, or accessory on the Harvest HD330 screwdriver antenna. 

The HD330 uses a very unusual / proprietary thread making it impossible to use a standard whip or stinger. Only the telescopic antennas that come with it are able to thread on to the coil. This adapter solves that very real problem ! It slips over the the factory telescopic antenna (when fully collapsed) and is secured with a stainless steel set screw. This allows you to thread in a 3/8x24 antenna / whip or other adapter / accessory. 

* Does NOT include the small cone-shaped stinger adapter (ferrule) that allows you to use a thin steel stinger / whip.

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  • Individually machined in Evansville, Indiana USA
  • Fits snug and secure over the factory original telescopic whip
  • Made of 6061 aluminum
  • Endorsed by N9KGC 


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