. Practical wireless telegraphy; a complete text book for students of radio communication . gn of a commercial re-ceiving tuner, the primary or second-ary winding is interrupted at pointssuitable to the standard wave example, if sections 1, 2, 3 and 4are the secondary units of a receivingtuner, the winding is interrupted be-tween 1 and 2 at such a point that thewave length of the closed circuit(with small values of capacity inshunt) will be slightly above 600meters. The next interruption of thecircuit will be made at a point wherethe wave length adjustment is slightlyabove 1,000 me
. Practical wireless telegraphy; a complete text book for students of radio communication . gn of a commercial re-ceiving tuner, the primary or second-ary winding is interrupted at pointssuitable to the standard wave example, if sections 1, 2, 3 and 4are the secondary units of a receivingtuner, the winding is interrupted be-tween 1 and 2 at such a point that thewave length of the closed circuit(with small values of capacity inshunt) will be slightly above 600meters. The next interruption of thecircuit will be made at a point wherethe wave length adjustment is slightlyabove 1,000 meters, the next for 2,500meters, and so on. The foregoing selections are those agreeable to Americanpractice where ships communicate with naval or Marconi ship and shore stations. 148. The Variation of a Radio Frequency Inductance.—In the earliertypes of receiving tuners, the inductance of the radio-frequency coils was variedby mounting a sliding contact on a brass rod, the contact passing over successiveturns of bare wire. It is obvious that such a design is mechanically incorrect be-. Fig:. 191—Showing How the Inductance of the Radio Frequency Tuning Coil Can Be Varied by One Turn at a Time. 166 PRACTICAL WIRELESS TELEGRAPHY.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
