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Definition of "Night Effect" |
Radio waves can be reflected back by the ionosphere can cause fluctuations 30 to 60 nautical miles approx. 54 to 108 km from the transmitter, especially just before sunrise and just after sunset more common on frequencies above 350 kHz. / Voice actuated is the identification of the person who is speaking by characteristics of their voices, also called voice recognition. There is a difference between speaker recognition and speech recognition. |
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