Difference between revisions of "HF Propagation"
From The RadioReference Wiki
(new page - better title, more specific) |
|||
| Line 12: | Line 12: | ||
* [http://www.qsl.net/w6elprop W6ELProp] propagation prediction software | * [http://www.qsl.net/w6elprop W6ELProp] propagation prediction software | ||
* [http://www.sec.noaa.gov NOAA Space Environment Center] | * [http://www.sec.noaa.gov NOAA Space Environment Center] | ||
| − | + | [[Category:HF Topics]] | |
[[Category:Propagation Links]] | [[Category:Propagation Links]] | ||
Revision as of 19:16, 9 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.
- AC6V Propagation Links
- EHam Propagation Links
- Geoclock
- Grey Line Map
- Spaceweather.Com
- SunClock
- W6ELProp propagation prediction software
- NOAA Space Environment Center