The following items shall not be considered when computing the height of buildings: steeples, church belfries, spires, chimneys and smokestacks, cooling towers and elevator bulkheads, parapet walls and building equipment penthouses. Also, an antenna structure attached to the roof of a building, for private radio reception or transmission or television reception, to a height not exceeding twelve feet (12') above the height of the building to which it is attached; a ground supported antenna structure for private radio reception or transmission or television reception to a height not exceeding twelve feet (12') above the district height regulation; or as permitted in certain zoning districts, an antenna structure ground or roof supported to a height not exceeding twenty five feet (25') above the district height regulation, for radio or television reception or transmission. (Ord. 89-04, 4-3-1989)