He was very active in supporting the hobby of philately. Robert Brandeberry was a stamp collector who paid special attention to faked or forged rare postage stamps which are intended to deceive collectors. As an expert, Brandeberry often lectured on the subject.
Brandeberry served in a number of philatelic organizations, including the Society of Philatelic Americans, where he served as secretary and vice president, and at the American Philatelic Congress, the Council of Philatelic Organizations, and at the American Academy of Philately.
He also served as president of the national philatelic exhibition SEPAD (Southeast Pennsylvania and Delaware) in 1982.