coverage maps

Repeaters database on Google Maps - Interesting google map and repeater database integration that let you search, display and also edit repeaters and relative coverage using google maps api by K5EHX

442.375+ Repeater in Dickson,TN - Repeater Information & Coverage maps

IPS - HF Systems MUF maps and prediction charts - These pages provide general propagation advice for HF communicators. Information available includes inferred global propagation conditions, real time HF fadeout coverage charts, regional ionospheric vertical MUF maps and Hourly Area Prediction charts for Astralia and Asia, Europe and North America

ACE-HF Propagation Prediction Software - Professional PC software for hams that uses VOACAP and includes area coverage maps animated by time or frequency