TABLE 17 Spectrum use of incumbent wireless systems Communication Radio systems Frequency Remarks technologies 19.95 kHz 20.05 kHz (20 kHz, The clocks and watches – Global) that periodically receive 39 kHz 41 kHz (40 kHz, Japan) digital signals of the – 49.25 kHz 50.75 kHz (50 kHz, standard time transmitted – Russia) from the 59 kHz 61 kHz (60 kHz, UK, US transmitting – and Japan) stations to synchronize 65.85 kHz 67.35 kHz (66.6 kHz, and adjust own time. – Russia) 68.25 kHz 68.75 kHz (68.5 kHz, Standard frequency – Amplitude China) and time signal modulation 74.75 kHz 75.25 kHz (75 kHz, service – (BCD) Switzerland) 77.25 kHz 77.75 kHz (77.5 kHz, – Germany) 99.75 kHz 102.5 kHz (100 kHz, – 128.6 kHz 129.6 kHz (129.1 – kHz, Germany) 157.5 kHz 166.5 kHz (162 kHz, – France) 128.6 kHz 129.6 kHz Load/demand – Ripple Control (129.1 kHz, Europe) management system for Service 138.5 kHz 139.5 kHz (139 kHz, power plants and their – Europe) electric power network 10 kHz 250 kHz (Japan) Telecommunication – system that applying Automatic electric current to coils Train installed along with Stop railroad track and detects Systems electric current carried 425 kHz 524 kHz (Japan) – (ATS) through coils which are Systems installed on train vehicles on the rail to control Train trains. radio systems 100 kHz 250 kHz (Japan) Signal transmission – system which uses Inductive inductive coupling Train between transmission line Radio which is installed along 80 kHz, 92 kHz (Japan, only one Systems with the railroad track station) (ITRS) and so forth and antenna that is installed on train vehicles.
TABLE 17 Spectrum use of incumbent wireless systems Radio systems Frequency Communication technologies Remarks Standard frequency and time signal service 19.95 kHz – 20.05 kHz (20 kHz, Global) 39 kHz – 41 kHz (40 kHz, Japan) 49.25 kHz – 50.75 kHz (50 kHz, Russia) 59 kHz – 61 kHz (60 kHz, UK, US and Japan) 65.85 kHz – 67.35 kHz (66.6 kHz, Russia) 68.25 kHz – 68.75 kHz (68.5 kHz, China) 74.75 kHz – 75.25 kHz (75 kHz, Switzerland) 77.25 kHz – 77.75 kHz (77.5 kHz, Germany) 99.75 kHz – 102.5 kHz (100 kHz, 128.6 kHz – 129.6 kHz (129.1 kHz, Germany) 157.5 kHz – 166.5 kHz (162 kHz, France) Amplitude modulation (BCD) The clocks and watches that periodically receive digital signals of the standard time transmitted from the transmitting stations to synchronize and adjust own time. Ripple Control Service 128.6 kHz – 129.6 kHz (129.1 kHz, Europe) 138.5 kHz – 139.5 kHz (139 kHz, Europe) Load/demand management system for power plants and their electric power network Train radio systems Automatic Train Stop Systems (ATS) Systems 10 kHz – 250 kHz (Japan) Telecommunication system that applying electric current to coils installed along with railroad track and detects electric current carried through coils which are installed on train vehicles on the rail to control trains. 425 kHz – 524 kHz (Japan) Inductive Train Radio Systems (ITRS) 100 kHz – 250 kHz (Japan) Signal transmission system which uses inductive coupling between transmission line which is installed along with the railroad track and so forth and antenna that is installed on train vehicles. 80 kHz, 92 kHz (Japan, only one station)
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