HF

HF, or High Frequency, in the context of aviation, refers to a range of radio frequencies that fall between 3 and 30 MHz. HF communication is a vital component of the global communications network that the aviation industry relies on for the long-range communication, navigation, and surveillance (CNS) systems. HF is used in aviation due to its ability to be transmitted over long distances, especially over the oceanic and polar areas where VHF (Very High Frequency) coverage is not available. The HF communication system is capable of bouncing off the ionosphere, thus enabling it to cover vast distances, making it an essential tool for aircraft flying over areas where there are no ground stations. However, the quality of HF communication can be affected by various factors such as atmospheric conditions, time of day, and solar activity. Despite these limitations, HF remains a crucial part of the aviation communication infrastructure.
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