820c

820c is a designation that can refer to several different entities, most notably a specific model of teleprinter and a former United States Air Force designation.

The 820c teleprinter was manufactured by the Creed and Company. It was a teletype machine used for sending and receiving text-based messages over telephone lines. These devices were common in the mid to late 20th century in offices and communication centers. They operated by converting electrical signals into characters printed on paper and vice versa.

In the context of the United States Air Force, 820c was the designation for the Convair B-58 Hustler, a supersonic bomber. The B-58 was a unique aircraft, known for its delta wing design and its ability to carry a large, all-in-one pod containing fuel and a nuclear weapon beneath its fuselage. It entered service in 1960 and was retired in 1970. The 820c designation specifically referred to a reconnaissance version of the B-58. However, the primary designation for the bomber was B-58.

The use of "820c" in other contexts, such as product codes or scientific notations, is also possible but less widely recognized without further specification.