Amateur Television Network: Specializing in fast-scan amateur television and covering Arizona, California, Indiana, Nevada, and New Mexico. Includes repeater list and online swap shop.
Mid-Atlantic DX & Repeater Association: Features repeater list, officers, and photo gallery.
OH - KY - IN Amateur Radio Society: Resource offering licensing study and exams, membership information and club news.
Potomac Valley Radio Club: Mid-Atlantic group offers events schedule, contest information, membership and contact information, and links.