Raymond S. Faass Sr., 79, a retired Central Intelligence Agency officer, died Sunday at Manor Care nursing home in Wheaton after a heart attack.

He was a communications engineer with the CIA for about 15 years before retiring in 1963.

Mr. Faass was born in Derby, Kan. He served in the Army during World War I and later in the Navy.

After leaving the Navy in 1924, he worked in New York and Chicago for the Radio Corporation of America (RCA).

He served as a Navy officer in the Office of Strategic Services (OSS) during World War Ii. He helped develop clandestine radio networks and saw duty in Washington and the Mediterranean theater of war.

He retired from the Naval reserves in 1958 after attaining the of commander.

Mr. Faass was a member of Holy Redeemer Catholic Church in College Park.

Survivors include his wife, Anne, of the home in Greenbelt; five sons, David r., of Mendocino, Calif., Raymond S. Jr., of Baltimore, Lawrence J., of Monterey, Calif., Robert T. of Seabrook, Md., and Donald L., of Houston, Tex.; three daughters, Margaret Clerc, of Kingston, N.Y., and Norma J. Murphy and Elizabeth Sprague, both of Travernier, Fla.; a brother, Walter, of Grand Rapids, Mich.; 22 grandchildren, and one great-grandchild.