On the efficiency of ionospheric ELF generation

(power, gain, HF frequency, and modulation fre- quency) and the applicable model of the ambient ionosphere the conductivity modulation is first comput...

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experience periodic heating at the HF modulation. = (4) frequency. Since the ionospheric conductivity is electron temperature dependent, the conductivity This current is a source of -frequency radiation, under oes a similar periodic variation. Natura

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