General
website design software

Day-to-Day Variability of the Ionosphere

Is the Ionosphere In Step

NM7M The Little Pistol's Guide to HF Propagation     This is a 15 Megabyte file. A special thanks to NM7Mís daughters and son for giving me permission to put this (and Bobís other books) on my web site.

NM7M Long Path Propagation     This is a 3 Megabyte file.

NM7M Long Path Propagation - Revisited     This is a 19 Megabyte file.

Where Do the K and A Indices Come From

Noise

The Formation of the Ionosphere

Polarization

Disturbances to Propagation

A Look Inside the Auroral Zone

Propagation Plannning for DXpeditions

Measuring the Ionosphere

NM7M Contributions to Propagation

Did We Lose a Solar Cycle

Old Sunspot Data

 

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