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Robison's Manual of radio telegraphy and telephony for the use of naval electricians (1918)

Robison, S. S. (Samuel Shelburne), b. 1867, United States Naval Institute, Todd, David Wooster, Hooper, Stanford Caldwell · Annapolis, Md. : The United States Naval Institute · leaf 138

An illustration from Robison's Manual of radio telegraphy and telephony for the use of naval electricians, 1918, leaf 138
Fia. 72.—Spiral Inductance. … Fig. 73.—Helix and Spark Gap. 134 MANUAL OF RADIO TELEGRAPHY AND TELEPHONY. srariable connection to the helix so that the wave length can be varied.(Figs. 42 and 43.) It must not be forgotten that varying the wave length of eithercircuit by varying the inductance of the coupling coil or coils…

Telegraph, Wireless -- Handbooks, manuals, etc · Telephone, Wireless -- Handbooks, manuals, etc · Radio -- Handbooks, manuals, etc

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