SSN et SFI
2019-04-26 11:33
Bonjour,

Que signifie les indications SSN et SFI ?
Merci d'avance pour votre retour !
Re: SSN et SFI
2019-04-26 21:43
Hello Emeric
These are short forms for Measuring Propagation of HF RADIO Signals Probability.

SSN = SunSpot Number
SFI = Solar Flux Index

You can learn more on this link .......................

http://www.hamqsl.com/solar3.html#hfprop
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