. Practical wireless telegraphy; a complete text book for students of radio communication . anbe calculated before actual measurement. When the primary winding of the oscillation transformer is placed close to the second-ary winding, perhaps partially telescoped into it, the set is said to have tight coupling orclose coupling, but when these two windings are drawn apart the coupling is said to beloose. Now if oscillations of two frequencies flow in an aerial system, and afterward thecoupling is gradually reduced, the two sets of oscillations gradually merge into oscillationsof a single frequen
. Practical wireless telegraphy; a complete text book for students of radio communication . anbe calculated before actual measurement. When the primary winding of the oscillation transformer is placed close to the second-ary winding, perhaps partially telescoped into it, the set is said to have tight coupling orclose coupling, but when these two windings are drawn apart the coupling is said to beloose. Now if oscillations of two frequencies flow in an aerial system, and afterward thecoupling is gradually reduced, the two sets of oscillations gradually merge into oscillationsof a single frequency and generally with this adjustment, the radiated wave is feeblydamped or of low decrement; i. e., it has the damping of the antenna circuit. The student should note this carefully: With the plain spark discharger in the closedcircuit, close coupling of the primary and secondary windings generally causes a broadwave to be radiated from the aerial system, while loose coupling^ results in the radiationof a sharp wave. The terms are, of course, merely relative. (See Appendix, Section G.). FOR 300 METERS OPENS-l AND REDUCE INDUCTANCEAT T-i T-E \ \ \ \\ s-iMI> L-2 /-:>> \.-\/ // V ,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
