A must-read for radio communicators of any type. Highlights include: principles of ionospheric propagation, ionospheric forecasting, unusual HF and VHF ionospheric propagation, and do-it-yourself propagation predictions and charts. Solar cycle predictions, sunspots and the sunspot cycle, along with stunning photography including the largest-ever solar flare in 1989.
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A must-read for radio communicators of any type. Highlights include: principles of ionospheric propagation, ionospheric forecasting, unusual HF and VHF ionospheric propagation, and do-it-yourself propagation predictions and charts. Solar cycle predictions, sunspots and the sunspot cycle, along with stunning photography including the largest-ever solar flare in 1989.
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