Skywave concept
Skywave propagation is a radio wave transmission method where waves are reflected or refracted back to Earth from the ionosphere, a layer of the upper atmosphere ionized by the sun. This allows radio signals to travel beyond the horizon, enabling long-distance (intercontinental) communication, particularly in the shortwave frequency bands. The process depends on the frequency of the radio wave and the changing conditions of the ionosphere, which vary by time of day, season, and solar activity. This phenomenon is essential for extended-range communication.
 |
The project "Understanding HF Propagation" focuses on near-real-time indicators and explains what they mean. See the sitemap.
Real time radio propagation map
Current solar conditions Ham radio
Current Ham Radio HF Propagation
HF propagation status and alerts
HF Radio Propagation Search Terms
HF propagation for hams explained
Radio propagation for hams explained
Current HF Band Conditions Online Map
Skywave propagation for hams explained
Current Ham Radio Propagation Conditions
Real-time watching of worldwide ham activity
How does the sun affect radio communication?
Real-time watching of worldwide activity of hams
The Fascinating World of HF Skywave Propagation
Current HF Bands Conditions—Charts for Radio Hams
Current HF Band Conditions Maps For Radio Operators
HF propagation seasonal anomaly