This post is about why I need Winlink and how my Portable Winlink Setup let me contact family and friends when hurricane Milton took out our power and cell service for several days. Hurricane Milton left us without power for 3 days. I think we are very fortunate because some were without power and cell […]
Author: Mike Thomas
What the Heck is the Solar Flux Index?
When we talk about HF propagation, we often use the numbers for SFI (Solar Flux Index), K-Factor, A-Factor. The solar flux index is an indicator for the amount of ionization in the F2 region of the atmosphere. This in turn, indicates the electron concentration. Low electron concentrations indicate poor conditions for long-distance communication, while high […]