Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Grimeton Radio Station, Varberg' has mentioned 'Frequency' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| This consisted of a huge rotating electromechanical AC generator (alternator) turned by an electric motor at a fast enough speed that it generated radio frequency alternating current, which was applied to the antenna. | WIKI |
| The station started operation in 1924, transmitting radiotelegraphy traffic with the callsign SAQ at 200xc2xa0kW on a frequency of 16.5xc2xa0kilohertz, later changed to 17.2xc2xa0kHz, to RCA's Radio Central receivers on Long Island, New York. | WIKI |
| The principle used is that of a generator (also called alternator) with an exact large number of poles driven to an exact speed matching the number of pole changes with the desired output frequency (f = poles/2 * revolutions). | WIKI |
| The switching on and off of the transmitter with the signalling morse key makes the driver motor change frequency just a bit, so the frequency is outside the narrow band of the antenna and thus transmitted with much less power. | WIKI |
| In fact this forms an early and clever form of frequency shift keying (FSK). | WIKI |
| To achieve maximum range, like other transoceanic radiotelegraphy stations of this era it transmitted in the VLF band, at a frequency of 17.2xc2xa0kilohertz and so the wavelength is approximately 17,442xc2xa0meters. | WIKI |
| It is supplied by a 2,200V supply from a transformer-derived 2 phase supply, and turns at 711.3 rpm to obtain the specified frequency of operation. | WIKI |