. Practical wireless telegraphy; a complete text book for students of radio communication . ischarger,excited by 5,000 volts continuous current, has been employed as well, and with which par-ticularly successful results have been obtained. Operated usually at the wave length of10,000 meters, daylight communication has been established with the U. S. A., the strengthof signals being equal to that obtained from other foreign stations of much greater power.(For a more detailed explanation of timed spark discharger sets see paragraph 219.) Some idea of the construction of the Marconi high power st
. Practical wireless telegraphy; a complete text book for students of radio communication . ischarger,excited by 5,000 volts continuous current, has been employed as well, and with which par-ticularly successful results have been obtained. Operated usually at the wave length of10,000 meters, daylight communication has been established with the U. S. A., the strengthof signals being equal to that obtained from other foreign stations of much greater power.(For a more detailed explanation of timed spark discharger sets see paragraph 219.) Some idea of the construction of the Marconi high power stations may be ob-tained from the following description: The power house of the transmitting section of the Wales Transoceanic station at Car-narvon, Wales, is shown in Pig. 303, wherein the aerial and ground leads of the greatantenna which transmits messages to the Belmar, New Jersey, station appear prominentlyin the foreground. This building measures approximately 100 feet by 83 feet, and is dividedinto three sections, known as the main machinery hall, the annex, and the extension. The. Fig. 305—Three Hundred Kilowatt 150 Cycle Generators at Carnarvon Station. transmitting sets, switchboard, transformer room, stores, offices and emergency operatingroam are located in the main machinery hall. The auxiliary plant is placed in the annex,consisting essentially of D. C. generators, electrically driven blowers and ventilating fans,and some small motor generator sets used in the signalling circuit. An office for the engi-neers and a fitting shop are also provided for in the annex. The extension is devotedentirely to experimental apparatus. All trans-Atlantic wireless messages transmitted fromthis station will be handled automatically from London, through the receiving section atTowyn, sixty-two miles away, and received at Belmar for automatic transmission to NewYork. This station is therefore of great interest to Americans as the communicating linkswith the New Jersey stations in t
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
