Ionosfære: Forskelle mellem versioner
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Linje 22:
* [http://www.transworldradio.8m.com/tutorial/tech/T3/A.html T3A Line of Sight; Reflection of VHF/UHF Signals; Ionosphere]
* [http://home.online.no/~polar-ps/telecom.htm Telecommunication in the Arctic (Page 2: Radio wave distribution and northern lights)]
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[[Kategori:Atmosfære]]
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