MATH’S NOTES

Inexpensive Lightning Protection

IRWIN MATH

This month, as we have promised, in our efforts to produce projects that are useful, easy to build and low cost, we would like to offer an interesting accessory that will be of use to almost any amateur with an outdoor antenna. We are all familiar with the damage and havoc a lightning strike can cause when it occurs in the vicinity of an amateur radio station with an outdoor antenna, particularly one mounted high up and in the clear. While nothing can prevent the disastrous results of a direct strike, measures can be certain be taken to prevent the problems of a nearby strike. A typical lightning strike of millions of volts can easily cause thousands of amperes to flow with the result that the field created by such…

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CQ Amateur Radio (Digital) - 1 Issue, May 2022

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