General Shortwave Information
https://en.wikipedia.org/wiki/Shortwave_radio -
Wikipedia article on what shortwave radio is and how it works.
https://en.wikipedia.org/wiki/Shortwave_listening - Overview about the field and hobby of shortwave listening.
https://en.wikipedia.org/wiki/Shortwave_listening - Overview about the field and hobby of shortwave listening.
https://www.reddit.com/r/shortwave/ - Reddit Shortwave central. Lots of information. a great place to ask questions.
https://www.shortwave.be/ - Detailed Belgian site- hover over the colored boxes to reveal many categories/links.
https://www.dxing.com/frequenc.htm - Understanding frequency vs. wavelength.
https://www.dxing.com/modesand.htm - Understanding modes and modulation (SSB, LSB, USB, etc.)
https://en.wikipedia.org/wiki/Radio_propagation - Understand radio wave propagation.
https://www.dxing.com/frequenc.htm - Understanding frequency vs. wavelength.
https://www.dxing.com/modesand.htm - Understanding modes and modulation (SSB, LSB, USB, etc.)
https://en.wikipedia.org/wiki/Radio_propagation - Understand radio wave propagation.
https://www.shortwaveschedule.com/index.php?now - What's on right now?
https://www.short-wave.info/ -
Shortwave frequency schedules. A guide to what’s on.
https://www.klingenfuss.org/utility.htm - Klingenfuss guide to utility radio stations. Super detailed!
https://shortwavearchive.com/ -
Shortwave archive. Listen to historic and current recordings.
https://www.sigidwiki.com/wiki/Database -Visual images explaining what you hear on radio signals.
https://www.nonstopsystems.com/radio/radio-sounds.html - A visual guide explaining different radio signals.
Radio Reception, Atmosphere, Space Weather
https://swe.ssa.esa.int/current-space-weather# - European Space Agency snapshot of current conditions.
https://www.swpc.noaa.gov/ - Space Weather Prediction Center homepage.
https://www.swpc.noaa.gov/communities/radio-communications - NOAA's Radio Communications Dashboard. Find out what the space weather is like and how it might affect signal propagation and radio communications.
https://www.spaceweather.gov/communities/space-weather-enthusiasts-dashboard - Space weather conditions.
https://solarham.com/index.htm - Excellent dashboard containing information at a glance about live solar conditions.
https://www.spaceweatherlive.com/ - Helpful dashboard and forum for space weather enthusiasts.
https://www.spaceweather.com/- More information about space weather and astronomy.
https://www.blitzortung.org/en/live_lightning_maps.php - Real time map showing lighting strikes worldwide. Helpful to determine if weather near University of Twente is affecting the SDR signal.
https://www.blitzortung.org/en/live_lightning_maps.php - Real time map showing lighting strikes worldwide. Helpful to determine if weather near University of Twente is affecting the SDR signal.
https://dx.qsl.net/propagation/greyline.html - Grey line map. The "grey line" is a band around the Earth that separates daylight from darkness- it affects radio wave propagation.
https://wiki.radioreference.com/index.php/VOLMET - What is VOLMET?
http://www.dxinfocentre.com/volmet-wx.htm - Information for people interested in monitoring VOLMET.
WebSDRs Around the World
http://websdr.org/ -
listing of many other online shortwave radios around the world.
https://forum.sdr-radio.com/ - Detailed forums on all things Web SDR!
https://forum.sdr-radio.com/ - Detailed forums on all things Web SDR!
https://www.sigidwiki.com/wiki/Database - This site will help you identify what you're hearing, through example sounds and photos of what sounds look like in the webSDR waterfall. Extremely comprehensive.
List of WebSDR location maps and access: