Latest solar cycle update and propagation predictions for 2025. What to expect for HF communications this year.
# Solar Cycle Update
The sun is entering an active phase of Solar Cycle 25, bringing exciting opportunities for HF communications.
## Current Solar Activity
- **Sunspot Number**: 150+ (increasing)
- **Solar Flux**: 180+ (excellent)
- **A-Index**: 5-10 (quiet conditions)
- **K-Index**: 2-3 (stable)
## Propagation Predictions
### 2025 Forecast
- **10m Band**: Excellent daytime propagation
- **15m Band**: Good daytime and evening
- **20m Band**: Excellent 24-hour coverage
- **40m Band**: Good nighttime coverage
- **80m Band**: Excellent nighttime coverage
## Best Operating Times
- **Morning**: 10m and 15m bands
- **Afternoon**: 20m and 15m bands
- **Evening**: 20m and 40m bands
- **Night**: 40m and 80m bands
## Tips for Success
- Monitor solar flux daily
- Use propagation prediction software
- Take advantage of peak conditions
- Keep detailed logs of conditions
The next few years should provide excellent HF propagation conditions!
The sun is entering an active phase of Solar Cycle 25, bringing exciting opportunities for HF communications.
## Current Solar Activity
- **Sunspot Number**: 150+ (increasing)
- **Solar Flux**: 180+ (excellent)
- **A-Index**: 5-10 (quiet conditions)
- **K-Index**: 2-3 (stable)
## Propagation Predictions
### 2025 Forecast
- **10m Band**: Excellent daytime propagation
- **15m Band**: Good daytime and evening
- **20m Band**: Excellent 24-hour coverage
- **40m Band**: Good nighttime coverage
- **80m Band**: Excellent nighttime coverage
## Best Operating Times
- **Morning**: 10m and 15m bands
- **Afternoon**: 20m and 15m bands
- **Evening**: 20m and 40m bands
- **Night**: 40m and 80m bands
## Tips for Success
- Monitor solar flux daily
- Use propagation prediction software
- Take advantage of peak conditions
- Keep detailed logs of conditions
The next few years should provide excellent HF propagation conditions!