Wireless Telegraphy: A Handbook for the Use of Operators and StudentsBatcheller Collection. |
Other editions - View all
Wireless Telegraphy; A Handbook for the Use of Operators and Students William Henry Marchant No preview available - 2016 |
Wireless Telegraphy: A Handbook for the Use of Operators and Students W. H. Marchant No preview available - 2017 |
Common terms and phrases
adjustment aerial alternating current alternating-current circuit ampere amperemeter antennæ circuit armature arranged battery buzzer cell centimetres chapter charging closed coast station coherer conductor connected contacts copper coupling curve decrement denser detector circuit diagram dielectric dielectric constant direct current direct-current discharge dynamo electrical oscillations electrodes energy Fleming valve galvanometer high-frequency currents hot wire increase induction coil installation insulated intermediate circuit large number length Lepel lines of force machine magnetic detector Marconi Marconi Company maximum metallic metres microhenries Morse key motor multiple tuner operator oscillating circuit oscillation transformer oscillatory circuit Paternoster Square piece of apparatus plates pole position Poulsen practical primary circuit primary winding radiated relay resistance resonance rotary converter secondary circuit secondary winding seen self-induction ship shown in Fig shows shunt signals spark-gap starting switch Telefunken telephone receiver terminals tikker tion transmitter tube variable condenser variable inductance variometer voltage volts wave meter wave-length
Popular passages
Page 2 - An electromagnetic wave in space has both an electric and a magnetic field intensity which are at right angles to each other and to the direction of propagation of the wave. The two field intensities are related to each other by &
Page 217 - Ships in distress make use of the following signal : — repeated at short intervals. As soon as a station perceives the signal of distress it must suspend all correspondence and must not resume work until it has made sure that the communication consequent upon the call for assistance has been completed. When a ship in distress adds, after a series of signals of distress, the call-signal of a particular station, the duty of answering the call rests with that station only. Failing any mention of a...
Page 46 - Restated, the standard deviation (sigma) is the square root of the mean of the squares of the deviations from the mean of a distribution.
Page 214 - Kvery coast station open to this service must be equipped in such a way as to be able to use these two wavelengths, of which one shall be designated as the normal wavelength of a I station.
Page 223 - BQRA Campania This is the Campania. AQRG? To what line do you belong? BQRG Cunard QRZI belong to the Cunard Line. Your signals are weak. Station A then increases the power of its transmitter and sends: AQRK? How are you receiving? BQRKI am receiving well. QRB 80 The distance between our stations is 80 nautical miles. QRC 62 My true bearing is 62 degrees, etc.