. Practical wireless telegraphy; a complete text book for students of radio communication . rs charges a large bank of highvoltage oil plate condensers which, in turn, discharge through an oscillation transformerand rotary disc discharger of uncommon proportions. As in the Glace Bay Station, thecircuit from the transformer secondaries to the condenser is interrupted by a speciallydesigned set of high tension relay keys which, in turn, are actuated by a small sending keyand a source of direct current. Arcing at the contacts of the main signalling key is prevented by a heavy blast of airforced d
. Practical wireless telegraphy; a complete text book for students of radio communication . rs charges a large bank of highvoltage oil plate condensers which, in turn, discharge through an oscillation transformerand rotary disc discharger of uncommon proportions. As in the Glace Bay Station, thecircuit from the transformer secondaries to the condenser is interrupted by a speciallydesigned set of high tension relay keys which, in turn, are actuated by a small sending keyand a source of direct current. Arcing at the contacts of the main signalling key is prevented by a heavy blast of airforced directly at the contact points by specially designed motor blowers. The advantages 294 PRACTICAL WIRELESS TELEGRAPHY. derived in interrupting of the high voltage current, lies in that it permits 300 K. W. to behandled at various speeds of transmission up to 100 words per minute without error. A more detailed description of certain apparatus of the circuits of radio frequency forthe New Brunswick station and others with like equipment (damped wave apparatus) willbe given in paragraph Fig. 303—Power House of the Trans-Atlantic Marconi Station at Carnarvon, Wales. The transmitting aerial at the New Brunswick station is of the inverted L type, consist-ing of 32 wires with a flat top approximately 5,000 feet in length. It is supported on tworows of steel tubular masts (6 masts in each row), which are approximately 400 feet inheight. The two rows of masts are separated about 250 feet in length, consisting of 2 wires supportedin length, consisting of 2 wires supportedoh six tubular masts, each 400 feet in height.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
