. An elementary manual of radiotelegraphy and radiotelephony for students and operators . balls, S, and theseballs are also connectedby a condenser, C, con-sisting usually of a batteryof Ley den jars, and byan adjustable inductancecoil, L. The antenna, A,is connected directly to one point on this circuit (see Fig. 6), someother point being connected to earth. The antenna and condensercircuits must be syntonised. This may be done by connecting inseries with the antenna another adjustable or tuning inductanceby means of which the natural time period of the antenna is madeto agree with that of th
. An elementary manual of radiotelegraphy and radiotelephony for students and operators . balls, S, and theseballs are also connectedby a condenser, C, con-sisting usually of a batteryof Ley den jars, and byan adjustable inductancecoil, L. The antenna, A,is connected directly to one point on this circuit (see Fig. 6), someother point being connected to earth. The antenna and condensercircuits must be syntonised. This may be done by connecting inseries with the antenna another adjustable or tuning inductanceby means of which the natural time period of the antenna is madeto agree with that of the condenser circuit. This tuning may beachieved by connecting a hot wire voltmeter over one or two turnsof the inductance in series with the antenna, and then alteringthis inductance, or else altering the capacity and inductance inthe condenser circuit until the indications of this voltmeter are amaximum. Marconi prefers to connect the antenna, A, inductivelywith the energy-storing circuit by means of an oscillation trans-former called a transmitting jigger. This jigger consists of a. Fig. 5. RADIOTELEGRAPHIC STATIONS 24^ wooden frame on which arc wound two circuits, p, s, a single
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1916
