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Solar-Terrestrial Data by n0nbh |
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- Understanding HF & VHF propagation conditions using data from N0NBH's HAMQSL Solar Data Panel
- STATION K AND A INDICES
- Here comes the sun
- www.solarham.net
- QST February 2014 pages 78-79
- Space Weather Woman TamithaSkov on YouTube
- spaceweatherlive.com
- Near-Real-Time MUF Map
- DXMAPS - Sporadic-E clouds location and estimated MUF real time map
- Wikipedia - List of solar cycles