. Practical wireless telegraphy; a complete text book for students of radio communication . rror due to the instrument itself does not exceed 1 range of this apparatus with a carborundum detector is from 40 to SO miles, but with acerusite detector it may be extended to 160 or 170 miles, which is ample for navigationpurposes. The direction finder has been found applicable to the reception of long wave lengthsigrials over great distances. Recent tests with this aerial were carried out by the MarconiWireless Telegraph Company of America, at their transatlantic receiving station, locate
. Practical wireless telegraphy; a complete text book for students of radio communication . rror due to the instrument itself does not exceed 1 range of this apparatus with a carborundum detector is from 40 to SO miles, but with acerusite detector it may be extended to 160 or 170 miles, which is ample for navigationpurposes. The direction finder has been found applicable to the reception of long wave lengthsigrials over great distances. Recent tests with this aerial were carried out by the MarconiWireless Telegraph Company of America, at their transatlantic receiving station, locatedat Belmar, N. J., U. S. A. The direction finder loop aerials were erected on a 4S0-footmast, and the receiving apparatus designed to be responsive to waves inclusive of 10,000meters. With a receiver responsive to undamped oscillations, daylight signals were re-ceived from the Marconi Stations at Carnarvon, Wales, and Clifden, Ireland; also fromthe German stations at Nauen, Germany, and Hanover, Germany. The direction of thesestations was readily found with a notable degree of Fig. 277a—The Direction Finder Complete with Fleming Oscillation Valve. PART XIV. TRANSMITTERS OF UNDAMPEDOSCILLATIONS. ARC GENERATORS—RADIO-FREQUENCY ALTERNATORS—PLIOTRON OSCILLATOR. 213. In General. 214. The Arc Generator. 215. Signal-ling WITH the Arc Transmitter. 216. The AlexandersonHigh Frequency Alternator. 217. Goldschmidt Radio-Frequency Alternator. 218. The Joly System for theProtection of Undamped Oscillations. 219. MarconisSystem for the Production of Continuous The Pliotron Oscillator. 213. In General.—Progress in the United States in the development ofsustained oscillation generators has been particularly marked during the past fewyears. In fact, by the use of undamped wave apparatus the transmitting range ofhigh-power stations has been materially increased; and in view of the wide-spread interest in continuous wave equipment, the fundamental circuitsand operati
Size: 2320px × 1077px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
