DXAlert

DXAlert – Propagation Conditions

Stay ahead of band openings with real-time solar and geomagnetic data from NOAA Space Weather Prediction Center.

Whether you're a CB radio operator, ham radio enthusiast, or just curious about propagation, DXAlert gives you the key numbers you need — updated live, straight from official NOAA sources.

What DXAlert monitors: • Solar Flux Index (SFI) — how active the Sun is today • Planetary K-index — geomagnetic disturbance level • Estimated A-index — daily geomagnetic activity • Sporadic-E seasonal likelihood — is Es season active?

Bands covered: • CB (27 MHz) — Sporadic-E & F2 skip • 6m — Es + ionospheric conditions • 2m & 70cm — ionospheric activity context

Features: • Live dashboard with visual condition gauge • All-bands overview at a glance • Historical SFI and Kp charts (up to 30 days) • Background alerts when conditions exceed your thresholds • No account required, no subscription, no ads • Data: NOAA SWPC (free, public)

Honest about limitations: Sporadic-E cannot be reliably predicted from solar data — DXAlert shows a seasonal climatology estimate, not a live Es detection. For confirmed openings, check DX cluster spots and beacon monitoring.

Also from DameAppku: TropoDX — tropospheric ducting forecasts for 2m and 70cm.