| Propagation Solar Cycle | Click ↓ | Votes ↓ | Flag ↓ |
| Amateur Radio Propagation Studies Sporadic e opening has enabled forward- and backscatter dx qsos |  | ||
| Dx propagation wwv predictions A dynamic collection of propagation information gathered from many different sources |  | ||
| VOACAP Online Prediction Services Hf propagation prediction and ionospheric communications analysis | | ||
| HF Propagation Using Solar Indices Quick Guide to HF Propagation Using Solar Indices | | ||
| HF propagation aurora auroral troposphere HF Propagation Tools and Solar |  | ||
| HF Propagation predictions software This program predicts the most likely operating frequencies and signal levels for high frequency shortwave radio propagation paths on specified days of the year and hours of the day |  | ||
| Propagation Tools The Solar Flux Index is a gauge of solar particles and magnetic field | | ||
| Radio Propagation Introduction Ham Radio operators, shortwave radio enthusiasts often talk about propagation | | ||
| Solar Activity and Climate Space weather may also in the long term affect the Earth's climate. Solar ultra-viole | | ||
| Solar activity and geomagnetic forecast a daily deterministic and probabilistic forecast, for next three days, of geomagnetic activity | | ||
| Solar Cycle Progression The charts on this page depict the progression of the Solar Cycle | | ||
| Solarham space weather Solar Cycle 24, Spaceweather, Amateur Radio VHF Aurora | | ||
| Top Band 160 meters This band is particularly challenging, and almost exclusively cw for dx | | ||
| Understanding Solar Indices Long distance HF radio communications is made possible by a region of charged particles | |
Modif. June 29 2022