Propagation

I’ve put together a couple of sites that really have been helpful to me in watching propagation for DXing. I hope you find them equally helpful. The 4 main ingredients to good conditions are SFI (Solar Flux Index), SSN (Sunspot number), A Index, and K Index. The SFI really needs to be above 70 to propagate radio waves, although I have seen some fair condition around 69. Good conditions are 100 and up. The SSN, the higher the better, but again I’ve seen fair conditions with 0. The A needs to be below 10 and the K below 4. There are other factors that come in to play, like solar winds, corona holes, and so on. That is where these sites help. Check them out and have some fun. Oh, by the way. The best way to tell about band conditions is to turn on your radio and listen, but these will really help.

Check out this cool video.——>  What is Space Weather?

Space Weather. Com

NOAA Space Weather

SOHO (NASA)

SunspotWatch.com

For a more in-depth look at the data and images see these links below.

Solar Imaging and Analysis:
SDO: http://sdo.gsfc.nasa.gov/data/
Helioviewer: http://www.helioviewer.org/
STEREO-EUVI + SDO-AIA 360° Heliographic Maps: http://tcrb.nrl.navy.mil/~iuu/maps360…
Flare Analysis: http://www.lmsal.com/solarsoft/latest…
Computer Aided CME Tracking CACTUS: http://www.sidc.oma.be/cactus/out/lat…
GOES Xray: http://www.swpc.noaa.gov/rt_plots/xra…
SOHO: http://sohodata.nascom.nasa.gov/
Stereo: http://stereo.gsfc.nasa.gov/
NOAA Sunspot Classifications: http://www.swpc.noaa.gov/ftpdir/latest/
GONG: http://gong2.nso.edu/dailyimages/
GONG Magnetic Maps: http://gong.nso.edu/data/magmap/
LMSAL Heliophysics Events HEK http://www.lmsal.com/isolsearch

Solar Wind:
NOAA/SWPC: http://www.swpc.noaa.gov
ACE Solar Wind: http://www.swpc.noaa.gov/ace/ace_rtsw…
Wang-Sheeley-Arge Solar Wind Prediction Model: http://www.swpc.noaa.gov/ws/
NASA ENLIL SPIRAL: http://iswa.gsfc.nasa.gov:8080/IswaSy
NOAA ENLIL SPIRAL: http://www.swpc.noaa.gov/wsa-enlil/

Magnetosphere, Ionosphere, Atmosphere:
GOES Magnetometer: http://www.swpc.noaa.gov/rt_plots/mag…
Ionosphere D-Region Absorption (DRAP) model: http://www.swpc.noaa.gov/drap/
Auroral Oval Ovation Products: http://helios.swpc.noaa.gov/ovation/
POES Auroral Global Maps: http://www.swpc.noaa.gov/pmap/
Global 3-hr Kp index: http://www.swpc.noaa.gov/rt_plots/kp_…
Wing Kp index prediction: http://www.swpc.noaa.gov/wingkp/index…
USGS Ground Magnetometers: http://geomag.usgs.gov/realtime/
USGS Disturbance Storm-Time (Dst): http://geomag.usgs.gov/realtime/dst/
NAIRAS Radiation Storm Model: http://terra2.spacenvironment.net/~ra…
HAARP Data Meters: http://www.haarp.alaska.edu/haarp/

Multi-Purpose Space Environment Sites:
SOLARHAM: http://www.solarham.net/index.htm
Spaceweather: http://spaceweather.com
SOLARIMG: http://solarimg.org/artis/
iSWA: http://iswa.gsfc.nasa.gov/iswa/iSWA.html

Definition of Geomagnetic Storm, Radiation Storm, and Radio Blackout Levels:
http://www.swpc.noaa.gov/NOAAscales/

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