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
95
The equipment is interesting because of the peculiar
conditions imposed upon instruments to be used under
such circumstances. A three kilowatt transformer, the
latest type of musical rotary gap and a valve detector were
included in the outfit. It was proposed to obtain the neces-
sary ground connection by trailing a 1200 foot phosphor
Fig. hi.—Operating the U. S. Signal Corps airship wireless
apparatus.
bronze ground lead in the ocean. The frame of the bal-
loon was to be used as the aerial. Should it have become
necessary to take the lifeboat which the balloon carried, a
kite would have been raised and by substituting a copper
wire in lieu of a string an aerial provided, and once more a
C O D and its appeal for aid would have gone vibrating
forth through the ether.
Several enterprising newspapers have recognized the
value of wireless telegraphy in collecting shipping news