Difference between revisions of "HF Propagation"
From The RadioReference Wiki
| Line 7: | Line 7: | ||
software to view this site. | software to view this site. | ||
| − | + | ==Links and Online Maps== | |
* [http://ac6v.com/propagation.htm AC6V Propagation Links] | * [http://ac6v.com/propagation.htm AC6V Propagation Links] | ||
* [http://www.eham.net/DX/propagation EHam Propagation Links] | * [http://www.eham.net/DX/propagation EHam Propagation Links] | ||
| Line 15: | Line 15: | ||
* [http://www.spaceweather.com Spaceweather.Com] | * [http://www.spaceweather.com Spaceweather.Com] | ||
| − | + | ==Software== | |
* [http://home.att.net/~acehf/index.htm ACE HF] | * [http://home.att.net/~acehf/index.htm ACE HF] | ||
* [http://home.att.net/~geoclock/index.html Geoclock] | * [http://home.att.net/~geoclock/index.html Geoclock] | ||
* [http://www.mapmaker.com/sunclock.htm SunClock] | * [http://www.mapmaker.com/sunclock.htm SunClock] | ||
* [http://www.qsl.net/w6elprop W6ELProp] propagation prediction software | * [http://www.qsl.net/w6elprop W6ELProp] propagation prediction software | ||
| + | |||
| + | ==Technical== | ||
| + | * [http://www.swpc.noaa.gov/rt_plots/kp_3d.html Estimated Planetary K Index] | ||
| + | * [http://www.fourmilab.ch/cgi-bin/uncgi/Earth/action?opt=-p Earth View] great for seeing Greyline | ||
| + | * [http://www.fourmilab.ch/cgi-bin/uncgi/Earth?imgsize=320&opt=-l&lat=37.0833&ns=North&lon=72.4167&ew=West&alt=35785&img=learth.evif Planetary View] another Greyline view | ||
| + | * [http://www.swpc.noaa.gov/ NOAA Space Weather Prediction Center] | ||
| + | * [http://www.radionetherlands.nl/features/media/practical/solar.html The Solar Guide] via R Nederlands | ||
| + | * [http://www.spacew.com/ Solar Terrestrial Dispatch] | ||
| + | |||
[[Category:HF Topics]] | [[Category:HF Topics]] | ||
[[Category:Propagation Links]] | [[Category:Propagation Links]] | ||
Revision as of 08:25, 17 March 2008
Radio and TV signals aren't always limited to traveling line of sight distances. On HF this is commonly caused by refraction (bending) of the signal at the upper layers of the atmosphere known as the ionosphere. On frequencies higher than this, while solar activity plays a role, Earth based weather
events are the most common cause of propagation. These links explore several sites, and software,
that can be used to help predict how a HF signal will propagate. For propagation topics above 30 Mhz,
please see our DXing Above 30 Mhz article.
If you're just getting started in the HF hobby, AE4RV's Propagation Primer is an excellant place to start. Note that you need the most up to date Flash software to view this site.
Links and Online Maps
- AC6V Propagation Links
- EHam Propagation Links
- Grey Line Map
- Hourly Propagation Maps via HFPack
- NOAA Space Environment Center
- Spaceweather.Com
Software
Technical
- Estimated Planetary K Index
- Earth View great for seeing Greyline
- Planetary View another Greyline view
- NOAA Space Weather Prediction Center
- The Solar Guide via R Nederlands
- Solar Terrestrial Dispatch