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,
Freedom 36 Cat Ketch Freedom 36 Cat Ketch The Freedom 36 Cat Ketch, also called the Freedom 36 CC, is an American sailboat, that was designed by Gary Mull and first built in 1985. The design is out of production. The boat was built by Tillotson Pearson in the United States for Freedom Yachts. The Freedom 36 Cat Ketch is a small recreational keelboat, built predominantly of fiberglass, with wood trim. It has a free-standing ketch rig, with the aft mast slightly shorter than the fore mast and both masts rigged with cat sails, an internally-mounted spade-type rudder and a fixed fin keel. With