The principles underlying radio communication (1922)
United States. National Bureau of Standards, Ould, Richard Sheldon, 1889-, United States. Army. Signal Corps · Washington, Govt. Print. Off. · leaf 310
from theground. In some cases a long insulated wire may be laid uponthe ground or in a shallow trench, forming a ground antenna.(See Sec. 150a.) For receiving stations equipped with goodelectron tube amplifiers (see Chapter 6) very simple antennasmay be employed, even for long-distance work, such… … FIG. 167-BCAGLANTLNNA. 308 ELECTROMAGNETIC WAVES. to anchors in the ground through insulators, A, as shown in thefigure. Lead-in wires L are brought down from the junction ofthe wires B to the apparatus. For high-power stations a type called the multiple-tunedantenna is sometimes used; this is…
Telegraph, Wireless · Radio
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