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The codes are intended for use by air, ground, sea, and space operations personnel at the tactical level. Code words that are followed by an asterisk (*) may differ in meaning from NATO usage. There is a key provided below to describe what personnel use which codes, as codes may have multiple meanings depending on the service.
2 Police radio codes. 3 Airwave. 4 References. Toggle the table of contents ... An oddity of the system was that call signs were often spoken as letters rather than ...
The end of the number was marked by the word "UNSHACKLE". As an example, suppose the codeword was BLACKHORSE, which has no repeating letters. The starting letter would be expressed as BLACKHORSE4, so the 4th letter would be used for 1 and so on - 1,2,3,4 would be transmitted as C,K,H,O.
ISO 3166-1 alpha-2 – two-letter country codes which are also used to create the ISO 3166-2 country subdivision codes and the Internet country code top-level domains. ISO 3166-1 alpha-3 – three-letter country codes which may allow a better visual association between the codes and the country names than the 3166-1 alpha-2 codes.
The poem code was ultimately replaced with the one-time pad, specifically the letter one-time pad (LOP). In LOP, the agent was provided with a string of letters and a substitution square. The plaintext was written under the string on the pad. The pairs of letters in each column (such as P and L) indicated a unique letter on the square (Q).
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 Romanian alphabet is a variant of the Latin alphabet used for writing the Romanian language.It is a modification of the classical Latin alphabet and consists of 31 letters, [1] [2] five of which (Ă, Â, Î, Ș, and Ț) have been modified from their Latin originals for the phonetic requirements of the language.
Supermarine Spitfire Mk Vb of the Polish 303 Kościuszko Squadron showing the RAF squadron code "RF" of 303 Squadron and the individual aircraft letter "D" which would be spoken, D-Dog Instruction page from WW I U.S. Army trench code, Seneca edition, with spelling alphabet for telephone and radio use