HAMSignal

About

The solar weather app for HAM radio operators. Real-time band conditions, push alerts, and propagation tools in one place. **The problem we solve:** You know conditions are good. You're waiting for the bands to open. But most apps only tell you when there's a storm - not when the conditions improve. HAMSignal watches K-index and SFI, and tells you when a band opens from your QTH. --- **Real-Time Solar Data** K-index, SFI, A-index updated every 15 minutes from NOAA. All 8 HF bands rated open/fair/closed. **Band Opening Alerts** Push notifications when conditions *improve*. Not storm warnings - band opening notifications. Set thresholds per band. 4-hour cooldown. Based on your grid square. **27-Day Solar Forecast** NOAA's published 27-day outlook. See predicted SFI and K-index ranges for the next month. Plan ahead. **Grey Zone / Terminator Overlay** The day-night boundary on the solar disk, plus your local sunrise and sunset times. Critical for HF timing. **PSK Reporter Live Data** See which bands are active right now. Real-time spot counts, top contacts, ranked recommendations. **Historical Trends** 7, 14, 30, or 90 days of SFI and K-index history with trend indicators. **Contest Mode** Full-screen glanceable dashboard when you're in a pileup. Large K-index, SFI, A-index, band recommendations - one look. **NOAA Satellite Pass Predictions** Next 5 passes for NOAA-18, 19, and METOP from your location. **QSO Logbook** Log contacts with solar conditions auto-attached. Export to ADIF or Cabrillo for LoTW, eQSL, award submissions. **Apple Watch** K-index and best band at a glance. Complications for all watch faces. --- No account required. No subscription. No ads. Your data stays on your device. SUPPORTS: iOS 17+, watchOS 10+