My favorite links

Ham Projects
Amateur Radio Antenna Projects 

Radio Modifications
www.mods.dk

Ham stores
Kuhne electronic GmbH 
AMSAT-NA 
Amateur Radio WWW bookmark file  
Near-Real-Time MUF Map  
William Hepburn's TV & Radio DX Information Centre  

Weather Information
HF-FAX Home 
Meteo NOAA
Radiofax Charts 

Renewable energy
ARI Renewable Energy