. Practical wireless telegraphy; a complete text book for students of radio communication . orarily for hoisting purposes. If the reduction of aerial current inthe foregoing example is due to one of the latter causes, normal antenna current will beobtained when the vessel returns to sea. But it is hardly possible that a reduction ofcurrent as great as that above mentioned will be occasioned in this way. 244. The. Faults of the Transmitter.—Assume that spark fails to dischargeat the gap when the transmitting key is closed. Unless the apparatus has been actuallyinjured by an accident, the operat
. Practical wireless telegraphy; a complete text book for students of radio communication . orarily for hoisting purposes. If the reduction of aerial current inthe foregoing example is due to one of the latter causes, normal antenna current will beobtained when the vessel returns to sea. But it is hardly possible that a reduction ofcurrent as great as that above mentioned will be occasioned in this way. 244. The. Faults of the Transmitter.—Assume that spark fails to dischargeat the gap when the transmitting key is closed. Unless the apparatus has been actuallyinjured by an accident, the operator should ask himself: (1) Is the alternator generating current? (2) Is the generator field open? (3) Is the primary or the secondary winding of the high voltage transformeropen or on short circuit? (4) Are the high potential condensers punctured? (5) Is there a leakage in the walls of the spark gap muiBer? (o) Test for the Alternator.—If the radio set contains a voltmeter and the meter itselfis not at fault, and furthermore, if it is placed in shunt to the A. C line juid no reading. Fig. 325A—Scout Airplane Equipped With Wireless Apparatus.
Size: 1834px × 1362px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
