sun spots

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sun spots

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DX Resources : DX Peditions : 2012 DXpeditions

  • S79 Praslin Island DX Pedition - IK5RUN, I5OYY I5IHE will operate from Praslin Is. Seychelles IOTA AF-024 respectly as S79UN S79YY S79LC Log Online and DX Spots Operations will start From Sunday 21st October 2012 till Sunday 4th November 2012
    [ Hits: 252 | Votes: 0 | Rating: 0 ]
Propagation : Resources
  • 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: 852 | Votes: 1 | Rating: 10 ]
Propagation : Sunspots
  • Solar Region Data - SunSpots - Solar Region Data Current Regions with Sunspots Summary, an useful tool for predictions
    [ Hits: 4439 | Votes: 13 | Rating: 4.84 ]
  • Sunspots explained - History, activity, glossary and modern reseach about suspots
    [ Hits: 1347 | Votes: 2 | Rating: 3.5 ]
  • About Sunspot cycles - Theory to explain solar cycles variability proposed by Jean-Pierre Desmoulins
    [ Hits: 2143 | Votes: 7 | Rating: 5.28 ]
  • Real time sunspots number - Space Weather: Real-Time 24hr Effective Sunspot Number
    [ Hits: 6267 | Votes: 41 | Rating: 6.09 ]
  • 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: 1387 | Votes: 3 | Rating: 8.33 ]
  • Daily Sunspots groups - All daily drawings of the sunspot groups and USSPS produced by INAF - Catania Astrophysical Observatory from 2009 up today are available in this page. The drawings of sunspot groups and pores are maken by a Cooke refractor (150mm/2230 mm) on a 24.5 cm diameter projected image of the Sun.
    [ Hits: 80 | Votes: 0 | Rating: 0 ]
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: 1150 | Votes: 3 | Rating: 4.33 ]

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