Radio masts and towers Radio masts and towers Radio masts and towers are, typically, tall structures designed to support antennas (also known as aerials) for telecommunications and broadcasting, including television. There are two main types: guyed and self-supporting structures. They are among the tallest man-made structures. Masts are often named after the broadcasting organizations that originally built them or currently use them. In the case of a mast radiator or radiating tower, the whole mast or tower is itself the transmitting antenna. The terms "mast" and "tower" are often used interchangeably. However, in structural engineering terms, a tower is a self-supporting or cantilevered structure,
Jack Ketch at the execution of Lord Russell, the Duke of Monmouth, and other political offenders." Because of his botched executions, the name "Jack Ketch" is used as a proverbial name for death, Satan, and executioner. Ketch took office in 1663, succeeding the late Edward Dun, to whom he had been apprenticed. He is first mentioned in the Proceedings of the Old Bailey for 14 January 1676, although no printed notice of the new hangman occurred until 2 December 1678, when a broadside appeared called "The Plotters Ballad, being Jack Ketch's incomparable Receipt for the Cure of Traytorous Recusants and Wholesome Physick