Anyone familiar with technology of any sort is also familiar with Murphy’s Law: “Anything that can go wrong will go wrong.”

The field of Amateur Radio is not immune to the irresistible force and perfect truth of this epigram. To the contrary, evidence of the absolute nature of these laws abounds in our hobby. Who among us has not heard of a $150 Svetlana GU-74B Power Tetrode sacrificing itself in order to protect the life of a 29 cent fuse?

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