What are Band Conditions Banners?

Band conditions banners are graphical displays on a webpage, designed to present online a concise, easy-to-understand information about the current or predicted radio propagation conditions, for specific ham bands. Online banners display the current or predicted status of band conditions - whether a band is open or closed - as well as additional useful information. It is based on real-time data gathered from a variety of sources.

See an example with explanations of a banner showing ham band conditions (courtesy Paul L Herrman, N0NBH):

_{The Understanding HF Propagation Project provides radio amateurs with a detailed overview and tutorials on several aspects of HF propagation.}