Current Solar Dynamics Observatory Images | |||
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External links to new window | |||
| NASA/SDO 10-Year Time Lapse of Sun 1-hour 1-minute Composite | |||
| ESA/NASA/SOHO 25-Year Time Lapse of Solar Chromosphere | |||
| NOAA/SWPC SF-A-K Indices SS Number A-K SN-Flux-Ap Forecast TECJPL | |||
| Dashboards Data Images Text Solar Cycle Scales Glossary | |||
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BOM/SWS Space WX Forecast Solar Geophysical HF Glossary
HF Radio Propagation-pdf Transequitorial Propagation-pdf T-index | |||
| Sun Today-Archive Solar Indices Propagation Solar tools Activity Butterfly | |||
| SpaceWxLive SF-A-K Indices SFI Geomagnetism Penticon Ionosphere GOES MODIS | |||
| Prefixes QRZ Database-Atlas Language Translate Measures Convert | |||
| IARU Operation Guide Emergency Ops Guide Band Plans-R1-R2-R3 ITU Phonetics | |||
| ARRL Band Plan-Privileges-Guide FCC Regulations Part 97-pdf NTIA Radio Spectrum | |||
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Background image: Composite of 151 images over Solar Cycle 24 | |||