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Basic Concepts


ARRL Centennial K9LA - Peek Behind the Curtain

Solar Flux, Sunspots, and Ionizing Radiation

Correlation Between Solar Flux and Sunspot Number

Correlation Between MUF and Solar Flux

Validating Propagation Predictions

The Structure of the Ionosphere

The M-Factor

Physics of Propagation - Refraction Absorption Polarization

Positive Electron Density Enhancements Due to Geomagnetic Field Activity

Seasonal Effects on Propagation


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