Difference between revisions of "HF"
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| + | __NOTOC__ __NOEDITSECTION__ | ||
| + | {| width="100%" style="vertical-align:top" | ||
| + | <div style="margin: 0; margin-right:10px; border: 2px solid #B6B6B6; padding: 0 1em 1em 1em; background-color:#ffffff; align:right;"> | ||
| + | '''Welcome to the RadioReference HF Gateway. "HF" is an abbreviation for "High Frequency." See [[Spectrum]].''' | ||
| + | |||
| + | High frequency communications occur in the 2-30 [[MHz]] band. Signals in this band can be refracted by the ionosphere allowing worldwide propagation. The distance varies depending on time of day, the solar cycle and current solar and geomagnetic activity, but in general it's best to listen below 10 mhz at night, above this during the day. Our [[HF Propagation]] article has links that describe these phenomenon in greater detail. | ||
| + | |||
| + | Many of the FAQs linked here are courtesy of [http://www.dxing.com DXing.Com] from Universal Radio of Reynoldsburg Oh. and the Monitoring Times website. | ||
| + | |||
| + | * [http://en.wikipedia.org/wiki/Short-wave_radio Wikipedia article on SW Radio] | ||
| + | * [http://www.dxing.com/modesand.htm Commonly Used Modes] | ||
| + | * [http://www.dxing.com/tuning.htm Frequency Ranges and Uses] | ||
| + | * [http://www.dxing.com/frequenc.htm Frequency vs.Wavelength] | ||
| + | * [http://www.monitoringtimes.com/html/glossary.html Glossary of Terminology] | ||
| + | * [http://www.dxing.com/radterms.htm Terms and Abbreviations] | ||
| + | * [http://www.dxing.com/utcgmt.htm UTC and GMT] | ||
| + | |||
| + | The RR forum for this topic can be found [http://www.radioreference.com/forums/forumdisplay.php?f=79 here] | ||
| + | </div><br><br> | ||
| + | |||
| + | <div style="margin: 0; margin-right:10px; border: 2px solid #B6B6B6; padding: 0 1em 1em 1em; background-color:#ccffff; align:right;"> | ||
| + | == Amateur Radio == | ||
| + | * [[Amateur Radio on HF]] | ||
| + | </div><br> | ||
| + | |||
| + | <div style="margin: 0; margin-right:10px; border: 2px solid #B6B6B6; padding: 0 1em 1em 1em; background-color:#ffccff; align:right;"> | ||
| + | == Citizen's Band == | ||
| + | * See the [[Citizens Band]] page for frequencies and channels | ||
| + | * [http://www.reactintl.org/ REACT] | ||
| + | </div><br> | ||
| + | |||
| + | <div style="margin: 0; margin-right:10px; border: 2px solid #B6B6B6; padding: 0 1em 1em 1em; background-color:#ccff00; align:right;"> | ||
| + | == Short Wave Broadcast == | ||
| + | * [[SWL Broadcast]] | ||
| + | * [[Pirates and Clandestines]] | ||
| + | |||
| + | </div><br> | ||
| + | |||
| + | <div style="margin: 0; margin-right:10px; border: 2px solid #B6B6B6; padding: 0 1em 1em 1em; background-color:#ffff00; align:right;"> | ||
| + | == Utility Monitoring == | ||
| + | *[[Utility Monitoring]] | ||
| + | |||
| + | === Utility Topics === | ||
| + | * [[ALE]] | ||
| + | * [[COTHEN]] | ||
| + | * [[Federal Aviation Administration]] | ||
| + | * [[HF Aeronautical Communications]] | ||
| + | * [[HF Digital Decoding]] | ||
| + | * [[HF Maritime Communications]] | ||
| + | * [[HF Military Communications]] | ||
| + | * [[ICE]] - Monitoring U.S. Immigration and Customs Enforcement HF Operations | ||
| + | * [[United States Coast Guard]] | ||
| + | * [[USAF High Frequency Global Communications System]] | ||
| + | </div><br> | ||
| + | |||
| + | <div style="margin: 0; margin-right:10px; border: 2px solid #B6B6B6; padding: 0 1em 1em 1em; background-color:#ffffcc; align:right;"> | ||
| + | ==Equipment== | ||
| + | * For links to antennas, reviews, modifications and filters, see our [[HF Equipment and Accessories]] article | ||
| + | |||
| + | == Online HF Receivers == | ||
| + | There are quite a few receivers online that you can listen to HF communications. Some of them even allow you to control the radio for limited times. Some others are set to a specific frequency on the HF band that usually has a lot of activity. See the [[Live Tunable Receivers]] article | ||
| + | </div> | ||
| + | |||
| + | [[Category:HF Topics]] | ||
| + | [[Category:RR Glossary]] | ||
| + | [[Category:Gateways]] | ||
Latest revision as of 21:12, 12 March 2010
Welcome to the RadioReference HF Gateway. "HF" is an abbreviation for "High Frequency." See Spectrum.
High frequency communications occur in the 2-30 MHz band. Signals in this band can be refracted by the ionosphere allowing worldwide propagation. The distance varies depending on time of day, the solar cycle and current solar and geomagnetic activity, but in general it's best to listen below 10 mhz at night, above this during the day. Our HF Propagation article has links that describe these phenomenon in greater detail.
Many of the FAQs linked here are courtesy of DXing.Com from Universal Radio of Reynoldsburg Oh. and the Monitoring Times website.
- Wikipedia article on SW Radio
- Commonly Used Modes
- Frequency Ranges and Uses
- Frequency vs.Wavelength
- Glossary of Terminology
- Terms and Abbreviations
- UTC and GMT
The RR forum for this topic can be found here
Amateur Radio
Citizen's Band
- See the Citizens Band page for frequencies and channels
- REACT
Short Wave Broadcast
Utility Monitoring
Utility Topics
- ALE
- COTHEN
- Federal Aviation Administration
- HF Aeronautical Communications
- HF Digital Decoding
- HF Maritime Communications
- HF Military Communications
- ICE - Monitoring U.S. Immigration and Customs Enforcement HF Operations
- United States Coast Guard
- USAF High Frequency Global Communications System
Equipment
- For links to antennas, reviews, modifications and filters, see our HF Equipment and Accessories article
Online HF Receivers
There are quite a few receivers online that you can listen to HF communications. Some of them even allow you to control the radio for limited times. Some others are set to a specific frequency on the HF band that usually has a lot of activity. See the Live Tunable Receivers article