Hugh V. Guidi, 63, a retired director of broadcast relations with the U.S. Chamber of Commerce and a former broadcaster with WTOP, died Wednesday at the Shady Grove Adventist Hospital after a heart attack. He lived in Gaithersburg.

Mr. Guidi, who was born in Newport News, grew up in Richmond and began his broadcasting career there with station WMBG. He then moved to Washington, where he worked for station WINX. Following World War II service in an Army combat engineers battalion in Europe, he returned to WINX and then joined WTOP.

His next stop was with the Housewives' Protective League, a series of CBS talk shows that he broadcast from Charlotte, N.C., and Richmond. About 1956, he returned to the Washington area and WTOP. He remained there until 1970, when he joined the U.S. Chamber of Commerce. He retired in 1980.

Mr. Guidi, who was on television as well as radio, was known for his telephone talk shows. He originated such programs as "Opinion Please" and "For Your Information" and was cohost of "Psycho-Logically Speaking," all on WTOP. He also was the editorial voice of the Southern States Industrial Council radio program and a newscaster for the Voice of America.

Survivors include his wife, Rosemary, of Gaithersburg; three sons, Hugh Jr., of Gaithersburg, and Alfred and Paul, both of Washington; two daughters, Ann Reidenbach of Gaithersburg, and Mary Ellen Williams of Hilton Head, S.C.; a brother, Joseph, of Catonsville, Md., and three grandchildren.