Practical wireless telegraphy; a complete text book for students of radio communication (1917)
Bucher, Elmer Eustice, 1885- · New York, Wireless Press, Inc · leaf 125
lf-induction of thecoil is varied by moving the core in and out the windings. Certain types of high potential transformers are designed for direct connection to thepower mains, and therefore they do not require a reactance regulator. 110. Aerial Changeover Switch.—^The object of the aerial switch… … Fig. 134—Primary Reactance Coil. 3 the transmitting aerial by a switchwith a break of at least 6 inches inlength. An aerial switch of recent design, thetype S. H. switch of the Marconi Companyis indicated in Fig. 136 with the necessarydiagram of connections for a commercialradio installation. When…
Telegraph, Wireless
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