Nick,

To loosen the shorting bar set screws, carefully heat the shorting bar with a propane torch. As the aluminum expands, the set screw will free. Use an allen wrench to maintain mild torque on the set screw as the shorting block is heated.

Good luck.

73 - Paul - W2HRO

On Mon, Dec 25, 2023 at 8:09 AM nick via AMSAT-BB amsat-bb@amsat.org wrote:

I am trying to refurbish my M^2 antenna and the se screws on the shorting bar are frozen. Any suggestions how to free up the set screws?

nick

Cell 337 258 2527

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