The Wireless Institute of Australia (WIA) states that it is the oldest national radio society in the world having been established in 1910.
TheWIA's South Australian and Northern Territory web site is at http://www.vk5wia.ampr.org/
TheWIA (Federal) web site is at http://www.wia.org.au/ (this has been a good link, but as of 08FEB99, there is something wrong with it).
The Colorado QRP Club is a non-profit organization of invidiuals promoting the use of low-power. I am very enthused about this group and their principles.
The Colorado QRP Club's web site is at http://gandalf.rmsd.com/hamradio/
American Radio Relay League (ARRL)
The ARRL's web site is at http://www.arrl.org/
Alice Springs Amateur Radio Club
(ASARC)
The ASARC's web site is at http://www.taunet.net.au/anzachill/asarc.htm
I am (VK8JJ) also ASARC's current President.