Assembled from a prediction model written by VE5ZX/G0TZX, from parameters supplied by G4FKH
Solar Flux reports, Current Alerts and Warnings from NOAA, 27 day forcast from NOAA, charts reflecting the past 7 years Solar cycle summary charts from NOAA
The charts on this page depict the progression of the Solar Cycle. The charts and tables are updated by the Space Weather Prediction Center monthly using the latest ISES predictions
Web based VHF-UHF RF planning powered by SPLAT! and Google Maps. Access via website, Android App or dynamic Google Earth interface.
Introduction to troposcatter or tropospheric scatter propagation using the troposphere
Broadcast via WWV and WWVH at 18 and 45 minutes past the hour. This message is updated every 3 hours.
Reports current Solar-terrestrial indinces, Solar Flux, A-index, K-Index, forecast for space weather storms.
Prepared by the US Dept. of Commerce, NOAA, Space Environment Center
Quick reference table on understanding A K SFI indexes and how can be translated in usable frequency opportunities
Current status, prediction, solar weather for the solar cycle 24 by VE3EN
Automatic e-skip and aurora alerts via email or SMS, it sends also latest dxspots via email.
VHF, ms, aurora, es, photos, audio, link, soft and more.
A collection of ad Hoc empirical comments on VHF radio waves propagation by Pete Heins N6ZE
Long path hf radio propagation is sometimes the best path to work dx, since the shortest path is not always the best path.
About greyline propagation in HF bands
Nasa MSFC predictions on the behavior of current sunspot cycle.
Images from the Solar Dynamics Observatory and Atmospheric Imaging Assembly
Global map of Solar Zenith Angles, or angles indicating the elevation of the sun above the horizon
15 possible explanations for Long Delayed Echoes by University of Oslo
Concise guides to radio signal propagation including topics such as the ionosphere, troposhere, ionospheric refraction, E layer, D, layer etc.
The NOAA Space Weather Scales were introduced as a way to communicate to the general public the current and future space weather conditions and their possible effects on people and systems.
The scales describe the environmental disturbances for three event types: geomagnetic storms, solar radiation storms, and radio blackouts.