HF propagation for beginners

HF (High Frequency) propagation is a vital aspect of long-distance communication, encompassing the transmission of radio waves in the frequency range of 3 MHz to 30 MHz. This technique leverages the unique properties of the ionosphere, allowing radio waves to travel extensive distances that can range from hundreds to thousands of kilometers. The key mechanism behind this phenomenon is the use of skywaves, which are radio signals that reflect off the various layers of the ionosphere. This reflection process not only enhances the reach of the signals but also enables reliable and effective communication across vast geographical areas, making HF propagation integral to many communication systems.

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