AERO Amateur Radio Club - Middle River-based. Resource features club and meeting information, VE testing help, schedule of events and links. - http://www.aeroarc.us/
Harford County Amateur Radio Emergency Communications - Resource for disaster and emergency communications emergencies. Includes net schedules, repeater frequencies, club information, photos and links. - http://www.harfordemcomm.org
Northeast Maryland Amateur Radio Club - Harford County-based resource includes club and membership information, activities, homebrew plans and regional weather and disaster links. - http://www.nemarc.org
Baltimore Amateur Radio Club - Includes newsletter archive, testing session dates, and hamfest information. - http://www.baltarc.com/
Columbia Amateur Radio Association - Serves Howard County and site includes activity schedule, repeater list, newsletter archive, satellite information. - http://www.columbiaara.org/
Carroll County Amateur Radio Club - Includes information about the Westminster group and their events, newsletter, mailing list, articles, and links. - http://www.qis.net/~k3pzn/
Antietam Radio Club - Includes club and ARES/RACES information, upcoming events and links. - http://www.w3cwc.org