Wireless Telegraphy and Telephony
Forfatter: Alfred P. Morgan
År: 1917
Forlag: The Norman W. Henley Publishing Company
Sted: New York
Udgave: Third Edition, Fully Illustrated
Sider: 33
UDK: 621.396.1 Mor
A practical Treatise on Wireless Telegraphy and Telephony, giving Complete and Detailed Explanations of the Theory and Practice of Modern Radio Apparatus and its Present Day Applications, together with a chapter on the possibilities of its Future Development
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WIRELESS TELEGRAPHY
23
tected from the rain by a small shelter. The wires are
insulated near the lower ends by strain-insulators. The
Fig. 22.—An amateur aerial (flat-top).
action of the wires is to serve as a capacity extension to
the aerial.
Vertical aerials are not as efficient as either of those
forms just mentioned. They require to be 50 per cent.