File:Wire inverted L antenna construction.png

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Summary

Description	Diagram of an Inverted-L wire shortwave antenna showing parts. The inverted L is used as a transmitting and receiving antenna on the longwave, medium wave and shortwave bands by short wave listeners and radio amateurs. It consists of a wire strung between two supports with insulators at the ends to insulate it from the supports, with a vertical wire attached at one end which drops down and connects to the transmitter or receiver. This example from 1922 also has a lightning grounding switch to attach it to a ground connection during lightning storms for safety. Caption: AN INVERTED L ANTENNA ADJUSTED BETWEEN TWO BUILDINGS It will be seen that there is a pulley adjustment that permits lowering of the antenna; or the tightening of it if it sways in the wind. Alterations to image: Erased parts list from white area and cropped bottom slightly.
Date	1922
Source	Retrieved from Henry Smith Williams 1922 Practical Radio, Funk and Wagnalls Co., New York, p. 66 on Google Books
Author	Henry Smith Williams

Licensing

Public domain	This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.	United States
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