Yavapai Amateur Radio Club - Includes club pictures, newsletter, and meeting times and location. 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. Central Arizona DX Association - A group of ham radio operators in the Phoenix area whose primary interest is in DXing. Arizona Near-Space Research - Phoenix-based club sponsors high altitude amateur radio balloon flights. Lists flight schedules, meeting times, and equipment payloads. Northern Arizona DX Association - Includes calendar, newsletter, and links. ThunderBird Amateur Radio Club - Phoenix-area club lists contact information and links. Tri-City Amateur Radio Association - Resource for the Southwest Salt River Valley in Arizona. Features club news and meeting information, frequencies, and local links.