ITU

التزام بتوصيل العالم

Short-term prediction of solar-induced variations of operational parameters for ionospheric propagation

Report P.727-3 (1990)

Status : Withdrawn

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1401436 bytes 1990-01-01 E 70000 
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1590180 bytes 1990-01-01 F 70000 
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1551253 bytes 1990-01-01 S 70000