One of the most comprehensive amateur radio sites with reviews on almost every piece of ham radio equipment.
The ARRL is a non commercial American National Association for Ham Radio. The ARRL supports the growth and promotes the Hobby of Amateur radio worldwide.
DX Zone is a portal all about ham radio with a human edited links directory dedicated to long-distance ( DX ) and two-way radio communications
The wireless Institute is a body which helps represent the Ham Radio community in Australia. They converse with the ACMA to help make Amateur Radio in Australia run smoothly.
The ACMA is the Australian governing body that regulates all of the rules and conditions for all radio communications.