HF Propagation by Horoscope
Why Your Favorite Metric Keeps Lying to You
HF Band Plan – NOW, and your next 3 days
Real-Time and Location-aware Band operating guidance for serious HF operators.
The Interplanetary Magnetic Field (IMF)
How SolarCdx.com’s advanced monitoring tools help you master the space weather that controls your HF communications
Beyond the Numbers
Visualizing Space-Weather Data for Intuitive Decision-Making
Storm Versus Storm
Not all space weather storms are created equal
The Hemispheric Power Index (HPI)
Real-Time Indicator for Aurora and HF Radio Conditions
Why People Still Use Ham Radio – 2025
Let’s be honest to someone outside the hobby, ham radio can seem like a relic from another era.
The Grid: POTA, SOTA, and more
Your Essential Companion for Portable Ham Radio Operations
Solar Wind Speed: The Hidden Variable That Changes Everything
Why this single parameter drives more amateur radio propagation changes than any other space weather variable
Decoding the Disturbance Factor: Why It’s Not Just a Number
Understanding SolarCdx.com’s multi-parameter correlation engine and how to use tactical propagation intelligence
Disturbance and Quiet: Finding DX windows during active SolarWx
How to spot brief propagation opportunities hidden within geomagnetic storms using tactical trend analysis
Aurora for HF Operators: When ‘Bad’ Space Weather Creates Amazing DX
The hidden world of auroral propagation that transforms space weather disasters into rare contact opportunities
QRP Operators: How to Turn Space Weather Into Your Secret Weapon
Why 5 watts and smart timing beats 100 watts and bad timing every time
Geomagnetic Quiet vs. Ionospheric Quiet
Why They’re Not the Same Thing
The critical distinction that determines whether your tactical propagation intelligence actually works
After the Flare
The counterintuitive truth about solar flares and HF propagation