@Propagation Conditions Sunspot 伝搬 

http://www.reversebeacon.net/ Reverse Beacon Network

http://sidc.oma.be/silso/  SILSO - Sunspot Index and Long-term Solar Observations

http://sidc.be/  SIDC - Solar Influences Data analysis Center

https://www.swpc.noaa.gov/ SPACE WEATHER PREDICTION CENTER - NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION



  • radio/propagation/index.txt
  • Last modified: 2019/11/17 19:22
  • by admin