Difference between revisions of "HF Propagation"
From The RadioReference Wiki
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please see our [[DXing Above 30 Mhz]] article. | please see our [[DXing Above 30 Mhz]] article. | ||
| + | ; 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] | ||
| − | |||
* [http://dx.qsl.net/propagation/greyline.html Grey Line Map] | * [http://dx.qsl.net/propagation/greyline.html Grey Line Map] | ||
| + | * [http://www.sec.noaa.gov NOAA Space Environment Center] | ||
* [http://www.spaceweather.com Spaceweather.Com] | * [http://www.spaceweather.com Spaceweather.Com] | ||
| + | |||
| + | ; Software | ||
| + | * [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 | ||
| − | + | ||
[[Category:HF Topics]] | [[Category:HF Topics]] | ||
[[Category:Propagation Links]] | [[Category:Propagation Links]] | ||
Revision as of 04:47, 10 September 2007
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.
- Links and Online Maps
- AC6V Propagation Links
- EHam Propagation Links
- Grey Line Map
- NOAA Space Environment Center
- Spaceweather.Com
- Software