Establishing reliable communication with STORADIO via HF radio requires careful selection of the appropriate frequency. Since HF radio signals rely on reflection from the ionosphere, their performance is influenced by several factors—most notably the time of day, solar activity, atmospheric conditions, and your geographic location.
To support this process, we provide HF Propagation Forecast Charts. These charts are based on predictive propagation models rather than real-time data. They offer a reliable estimate of the most suitable frequency bands for communication with STORADIO under expected conditions throughout the day and night.
By referencing these charts, operators can select frequencies that are likely to offer optimal signal strength and clarity, reducing the risk of poor connections or communication failure. This is especially important when operating over long distances or during periods of heightened atmospheric variability.
Use the HF Propagation Forecast as part of your communication planning to enhance connection quality and ensure efficient, dependable contact with STORADIO.
Choose the chart closest to your geographical location.
You’ll find them here: storadio.aero/propagation
General rules:
- The higher the sun, the higher the frequency.
- The lower the sun, the lower the frequency.
- The longer the distance, the higher the frequency.
- The shorter the distance, the lower the frequency.