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sunspot
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about sunspot on dxzone.com
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Propagation : Sunspots
Site listings
Propagation : Observatories Propagation : Resources
- Sunspot answer book
- Mr Sunspot's Answer Book National Solar Observatory Sacramento.
[Hits: 375 | Votes: 1 | Rate: 5.00] - Propagation eAlert Service
- Automatic e-mail alert of propagation information. Gives current solar flux, Ap, Kp, solar wind information, solar and geomagnetic conditions past and forecast, sunspots, aurora index, and more.
[Hits: 625 | Votes: 1 | Rate: 10.00] - Radiowave Propagation Center
- High frequecy and VHF radio propagation data, solar and geomagnetic real-time and historic data, sunspot activity reports, as well as forecasts. A comprehensive propagation resource compiled by Tomas Hood, editor of the propagation columns of CQ, CQ VHF, Popular Communications, and Monitoring Times magazines.
[Hits: 158 | Votes: 1 | Rate: 10.00] Propagation : Solar Cycle
- F5LEN Solar forecast
- Display solar activity forecast for next 27 days, display A-index, Sunspot Numbers and Flux forecast
[Hits: 1299 | Votes: 0 | Rate: 0.00] Propagation : Sunspots
- Solar Region Data - SunSpots
- Solar Region Data Current Regions with Sunspots Summary, an useful tool for predictions
[Hits: 3900 | Votes: 11 | Rate: 4.91] - The Sunspot Cycle
- Sunspot Numbers, The Butterfly Diagram, the Greenwich sunspot data and sunspot realted infos.
[Hits: 1784 | Votes: 3 | Rate: 6.67] - NASA Sunspot Cycle Predictions
- Nasa MSFC predictions on the behavior of current sunspot cycle.
[Hits: 7034 | Votes: 34 | Rate: 7.14] - Solar Flare and sunspots
- Understand the connection between solar flares and sunspots.
[Hits: 1292 | Votes: 2 | Rate: 5.50] - Sunspots explained
- History, activity, glossary and modern reseach about suspots
[Hits: 1098 | Votes: 2 | Rate: 3.50] - Sunspot numbers explained
- Definition of smoothed sunspot number and R12 index
[Hits: 840 | Votes: 2 | Rate: 4.00] - Sunspot Number
- How sunspot numbers are computed
[Hits: 1314 | Votes: 3 | Rate: 5.67] - About Sunspot cycles
- Theory to explain solar cycles variability proposed by Jean-Pierre Desmoulins
[Hits: 1833 | Votes: 7 | Rate: 5.28] - Sunspot activity by NASA
- Sunspot cycle closely following prediction by Science @ Nasa
[Hits: 1452 | Votes: 4 | Rate: 5.50] - RWC Belgium
- World data center for the sunspot index
[Hits: 1237 | Votes: 9 | Rate: 9.12] - Real time sunspots number
- Space Weather: Real-Time 24hr Effective Sunspot Number
[Hits: 5377 | Votes: 35 | Rate: 6.02] - Last 30 Days Solar Data
- Display a table of last 30 days sunspots reports.
Prepared by the U.S. Dept. of Commerce, NOAA, Space Environment Center
[Hits: 5962 | Votes: 40 | Rate: 8.61] - Maunder's Butterfly Diagram
- How to understand when a new solar cycle starts.
At the beginning of a new solar cycle, sunspots tend to form at high latitudes, but as the cycle reaches a maximum the spots form at lower latitudes.
[Hits: 870 | Votes: 3 | Rate: 8.33] - Spotless days around solar cycle transition
- An interesting perspective of the transition from one solar cycle to another is given by exploring the days with no reported sunspots.
[Hits: 295 | Votes: 0 | Rate: 0.00] - Predicted Sunspot Numbers and radio flux
- Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
[Hits: 547 | Votes: 2 | Rate: 5.00] - Catania Observatory sunspots data
- Daily sun spots data collected by the Catania astrophysical observatory
[Hits: 349 | Votes: 0 | Rate: 0.00] Software : iPhone
- Ham for iPhone
- Ham is a free iPhone Ham Radio utility.
View solar conditions (Solar Flux, Indices, X-Rays, Sunspots and calculated band conditions).
View PSKreporter reports and Callsign lookups.
[Hits: 1139 | Votes: 5 | Rate: 4.60] Technical Reference : Filters
- Variable bandwidth cw filter
- As the sunspots return and DX propagation conditions to improve, the age old problem with QRM begins to show up on the amateur bands. Thif filter help you on improving reception
[Hits: 759 | Votes: 3 | Rate: 4.33]
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