lightning arrester

The fault was found in a lightning arrester which one of the operators had neglected in the cable hut.

Incidentally, radio antennae should be properly grounded and have an approved lightning arrester.

One of the most important features in the erection of a lightning arrester is its connection to earth.

Inspect for contact of lightning-arrester carbons: a piece of writing-paper should pass between them easily.

Don't fail to use a lightning arrester, or better, a lightning switch, for your receiving set.