Robert, W4BNO, gave a presentation on “Solar Numbers and Amateur radio propagation” at the October 2011 monthly membership meeting.  This presentation discussed Solar Flux Index, Sunspot numbers, K index, A index and how these affect the upper atmosphere.  This also helps in understanding the solar reports from WWV and others.

A copy of the presentation is here:  Solar Numbers and Amateur Radio

Comments and feedback on this presentation are welcomed.