 ... secondary circuits, galena, or other similar detector, high-resistance telephones, etc., provided with the necessary switches for tuning to different wave lengths. The primary circuit includes the antenna, primary coil, series condenser or not as...  Radiotelegraphy: U.S. Signal Corps, 1914 - Page 108by United States. Army. Signal Corps - 1914 - 122 pagesFull view - About this book
 | Radio - 1917 - 1082 pages
...primary coil, series condenser or not as may be needed, and counterpoise. The antenna is connected to the primary coil through switches which put into...two dials indicated by the two switch arms, which can be varied by single turns from one to the whole number in the coil. For wave lengths shorter than... | |
 | United States. Army. Signal Corps - Telegraph, Wireless - 1917 - 144 pages
...primary coil, series condenser or not as may be needed, and counterpoise. The antenna is connected to the primary coil through switches which put into...two dials indicated by the two switch arms, which can be varied by single turns from one to the whole number in the coil. For wave lengths shorter than... | |
 | United States - 1918 - 596 pages
...primary coil, series condenser or not as may be needed, and counterpoise. The antenna is connected to the primary coil through switches which put into...two dials indicated by the two switch arms, which can be varied by single turns from one to the whole number in the coil. For wave lengths shorter than... | |
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