![Practical wireless telegraphy; a complete text book for students of radio communication . of wave length. That is, the primary winding is divided into four groups whichare cut into the circuit Practical wireless telegraphy; a complete text book for students of radio communication . of wave length. That is, the primary winding is divided into four groups whichare cut into the circuit](https://c8.alamy.com/comp/2CRKPAC/practical-wireless-telegraphy-a-complete-text-book-for-students-of-radio-communication-of-wave-length-that-is-the-primary-winding-is-divided-into-four-groups-whichare-cut-into-the-circuit-as-the-wave-length-is-progressively-increased-the-con-nections-to-the-separate-aerial-tuning-inductance-connected-in-series-with-theantenna-system-are-included-in-the-tens-switch-of-the-primary-winding-theunit-switch-controls-10-single-turns-of-the-primary-winding-permitting-anynumber-of-turns-from-one-to-maximum-to-be-included-in-the-circuit-as-will-beexplained-in-paragraph-191-the-aerial-circuit-2CRKPAC.jpg)
Practical wireless telegraphy; a complete text book for students of radio communication . of wave length. That is, the primary winding is divided into four groups whichare cut into the circuit
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Wireless telegraphy. Illustration of the 19th century. Germany. White background Stock Photo - Alamy
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