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HF Radio Propagation – Tools You Can Use

VOACAP Online does HF Radio Propagation analysis and prediction

HF radio propagation is the science and art of understanding how and when shortwave radio signals travel from a transmitter to a receiver. Beyond a short distance, shortwave radio signals travel by bounding off layers in the ionosphere. Often, there are several bounces. Here’s how to figure out how and when you can expect a signal to arrive at your location.

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