Difference between revisions of "HF Propagation"
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==Links and Online Maps== | ==Links and Online Maps== | ||
; Links | ; Links | ||
| − | * [http://ac6v.com/propagation. | + | * [http://ac6v.com/propagation.php AC6V Propagation Links] |
* [https://www.eham.net/propagation EHam Propagation Links] | * [https://www.eham.net/propagation EHam Propagation Links] | ||
* [http://www.spaceweather.com Spaceweather.Com] | * [http://www.spaceweather.com Spaceweather.Com] | ||
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** [http://www.fourmilab.ch/cgi-bin/uncgi/Earth/action?opt=-p Earth View (Mercator projection)] | ** [http://www.fourmilab.ch/cgi-bin/uncgi/Earth/action?opt=-p Earth View (Mercator projection)] | ||
** [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 Earth view (from above)] | ** [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 Earth view (from above)] | ||
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* [http://www.spacew.com/www/realtime.php Near-Real-Time MUF Map] | * [http://www.spacew.com/www/realtime.php Near-Real-Time MUF Map] | ||
* [http://www.hfpack.com/propagation/ Hourly Propagation Maps] via HFPack | * [http://www.hfpack.com/propagation/ Hourly Propagation Maps] via HFPack | ||
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* [http://propnet.org/catch3.php?band=&last=1&call=¢er=US PropNet Communication Circuit Quality Report] | * [http://propnet.org/catch3.php?band=&last=1&call=¢er=US PropNet Communication Circuit Quality Report] | ||
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==Software== | ==Software== | ||
Revision as of 09:09, 21 October 2020
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
- Links
- Online Maps
- Earth View great for seeing Greyline
- Near-Real-Time MUF Map
- Hourly Propagation Maps via HFPack
- PropNet Communication Circuit Quality Report
Software
- ACE HF
- Daylight Clock applet Greyline Display and Clock for the Logitech SqueezeBox series Wifi players.
- Proplab Pro
- SunClock
- VOACap
- VOAProp
- W6ELProp propagation prediction software
Technical
- DX QSL Net-Propagation
- DX Sherlock online db
- DXLC Solar Conditions
- HFRadio.org Propagation, Space Weather and Sunspot Cycle Resource Center
- IPS Radio and Space Services
- NOAA Space Weather Prediction Center
- Solar Cycle 24/SolarHam.com
- Solar Terrestrial Dispatch
- Topband Propagation
- WM7D Solar Research Page