. Practical wireless telegraphy; a complete text book for students of radio communication . condenser in circuit, the wave length of the antenna system will be progressivelyincreased (that is, the oscillation frequency decreased) as the control handle is moved in thedirection of maximum capacity. In case of severe interference, the damping of the receiv-ing antenna may be decreased in the following manner: For a given wave length set theshort wave variable condenser at a certain value of capacity and obtain resonance byadding inductance at the aerial tuning inductance until maximum response is
. Practical wireless telegraphy; a complete text book for students of radio communication . condenser in circuit, the wave length of the antenna system will be progressivelyincreased (that is, the oscillation frequency decreased) as the control handle is moved in thedirection of maximum capacity. In case of severe interference, the damping of the receiv-ing antenna may be decreased in the following manner: For a given wave length set theshort wave variable condenser at a certain value of capacity and obtain resonance byadding inductance at the aerial tuning inductance until maximum response is must be taken to select the correct values of inductance and capacity, which, ofcourse, vary with each aerial. If excessive values of inductance are added, variation ofcapacity will have little effect on the incoming signals. The fact is that signals would notbe heard under these conditions unless the transmitting station is near to the receivingstation. Correct values of inductance and capacity are assured if a slight change in con-denser capacity eliminates the Fig. 173—Type 101 Receiving Tuner (American Marconi Company). We may resume the function of the elements of the tuner as follows: The small pushbutton marked Test immediately to the right hand side of the receiving tuner closes thecircuit from the battery to the buzzer which oermits the manipulator to obtain the bestadjustment of the crystal. When turned to the right this button is locked in position. Thetwo switches on the front of the Type 106 tuner marked transformer primary vary theinductance of the primary circuit. The switch marked Units cuts in a single turn at atime. The switch marked Tens varies the primary inductance in groups of ten turns ateach point of contact. 154 PRACTICAL WIRELESS TELEGRAPHY. The primary condenser has minimum capacity in the zero position but if turned to the180° mark it is shunted by a special set of contacts (attached to the movable plates andthus cut out o
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
