Morse code encoded the same way (A, O, E, I, T, M, N, R, K, etc.). Bulgarian alphabet contains 30 characters, which exactly match all possible combinations of 1, 2, 3, and 4 dots and dashes. Russian requires 1 extra character, "Ы" which is encoded with 5 elements. During early World War I (1914–1916), Germany briefly experimented with 'dotty' and 'dashy' Morse, in essence adding a dot or a dash at the end of each Morse symbol. Each one was quickly broken by Allied SIGINT, and standard Morse was restored by Spring 1916. Only a small percentage of Western Front (North Atlantic
Russian Morse code Russian Morse code The Russian Morse code approximates the Morse code for the Latin alphabet. It was enacted by the Russian government in 1856. To memorize the codes, mnemonics are used, called "melodies" (напевы). A "melody" for a morse code for a character is a phrase which is sung (hence the name): the syllables with vowels а, о, ы correspond to dashes and sung long, the other syllables and the syllable "ай" correspond to dots and sung short. The "melodies" differ among various schools. The correspondence between the Cyrillic and Latin letters was later passed on into MTK-2 and subsequently