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Propagation in ionized media �
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PI.435

Sky-wave field-strength prediction method for the broadcasting service in the frequency range 150 to 1600 kHz �

PI.683

Sky-wave field strength prediction method for propagation to aircraft at about 500 kHz �

PI.1059

Method for predicting sky-wave field strengths in the frequency range 1605 to 1705 kHz �

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