About Appalachian Amateur Radio Group The Appalachian Amateur Radio Group, or "AARG" may be better know for "the Pine Grove Repeater", with it's rich family based history. Formally organized in 1991, has actively supported the amateurs of the emergency communications / public service community from our beginning. Our members are spread throughout our primary coverage area which includes portions of Berks, Dauphin, Lancaster, Lebanon, Schuylkill, and York Counties, in Pennsylvania, and beyond.