VLF waves with modulated or steered

ELF/VLF waves have been generated via steerable HF heating of the lower ionosphere. The temperature‐dependent conductivity of the lower ionospheric ...

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May 25, 2012 - waves have been generated via heating of the lower ionosphere. (50–100 km altitude) with High Frequency (HF, 3–10 MHz) radio waves. Because HF heating of the lower ionosphere changes the conductivity, on/off modulation of the HF he

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