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Chart of the Morse code 26 letters and 10 numerals [1]. This Morse key was originally used by Gotthard railway, later by a shortwave radio amateur [2]. Morse code is a telecommunications method which encodes text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs.
The tap code is based on a Polybius square using a 5×5 grid of letters representing all the letters of the Latin alphabet, except for K, which is represented by C. . Each letter is communicated by tapping two numbers, the first designating the row and the second (after a pause) designating the column.
The Speech/Morse generator (pictured here) is a machine that has been used for many well-known numbers stations The frequently reported use of high-tech modulations like data bursts , in combination or in sequence with spoken numbers, suggests varying transmissions for differing intelligence operations.
Other examples, of internationally recognized uses of Morse code abbreviations and well known code numbers, such as those of the Phillips Code from past eras of telegraph technology, are abbreviations such as WX for weather and SX for dollar, and from wire signal codes, the numbers 73 for best regards and 88 for love and kisses.
The Sprach-Morse Generator, the machine mistaken for a young girl speaking in German. Swedish Rhapsody was a Polish numbers station, operated by the Ministry of Public Security (later Office of State Protection and Foreign Intelligence Agency) that used AM broadcasting and operated between the late 1950s and 1998. [2]
These phrases are meant to sound like random letters and numbers, but in certain situations, they can be signs of a serious emergency. Skip to main content. 24/7 Help. For premium support please ...
Hidden messages distributed, according to a certain rule or key, as smaller parts (e.g. words or letters) among other words of a less suspicious cover text. This particular form of steganography is called a null cipher. Messages written in Morse code on yarn and then knitted into a piece of clothing worn by a courier. [1]
The procedure signs below are compiled from the official specification for Morse Code, ITU-R M.1677, International Morse Code, [1] while others are defined the International Radio Regulations for Mobile Maritime Service, including ITU-R M.1170, [8] ITU-R M.1172, [4] and the Maritime International Code of Signals, [5] with a few details of their ...