Arizona Near-Space Research: Phoenix-based club sponsors high altitude amateur radio balloon flights. Lists flight schedules, meeting times, and equipment payloads.
Central Arizona DX Association: A group of ham radio operators in the Phoenix area whose primary interest is in DXing. Includes member list.
Tri-City Amateur Radio Association: Resource for the Southwest Salt River Valley in Arizona. Features club news and meeting information, frequencies, and local links.
Tucson Amateur Packet Radio: TAPR is an international non-profit educational research and development organization focused on the issues of amateur radio wireless digital communications.