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Wabun code

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Title: Wabun code  
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Subject: Morse code, Morse code for non-Latin alphabets, Encodings of Japanese, Gi (kana), Baltimore-Washington telegraph line
Collection: Encodings of Japanese, Morse Code
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Wabun code

The Wabun Code (和文モールス符号 wabun mōrusu fugō, Japanese text in Morse code) is a form of Morse code used to send Japanese text. Unlike International Morse Code, which represents letters of the Latin script, in Wabun each symbol represents a Japanese kana. For this reason, Wabun code is also sometimes called Kana code.

When Wabun Code is intermixed with International Morse code, the prosign DO (-..---) is used to announce the beginning of Wabun, and the prosign SN (...-.) is used to return to International Code.

Wabun Code was famously used to transmit the message "NIITAKA-YAMA NOBORE 12 08" (新高山登れ12 08) or "Climb Mount Niitaka" on December 2, 1941, signalling the go-ahead of the Japanese attack on Pearl Harbor.[1]


  • Chart 1
  • Expanded Katakana Wabun Chart 2
  • See also 3
  • References 4
  • External links 5


Mora Code Mora Code Mora Code Mora Code Mora Code Mora Code Mora Code Mora Code Mora Code Mora Code Punctuation Code
a ア --•-- ka カ •-•• sa サ -•-•- ta タ -• na ナ •-• ha ハ -••• ma マ -••- ya ヤ •-- ra ラ ••• wa ワ -•- Dakuten ◌゛ ••
i イ •- ki キ -•-•• shiシ --•-• chiチ ••-• ni ニ -•-• hi ヒ --••- mi ミ ••-•- ri リ --• (wi ヰ) •-••- Handakuten ◌゜ ••--•
u ウ ••- ku ク •••- su ス ---•- tsuツ •--• nu ヌ •••• fu フ --•• mu ム - yu ユ -••-- ru ル -•--• n ン •-•-• Long vowel ◌̄ •--•-
e エ -•--- ke ケ -•-- se セ •---• te テ •-•-- ne ネ --•- he ヘ me メ -•••- re レ --- (we ヱ) •--•• Comma 、 •-•-•-
o オ •-••• ko コ ---- so ソ ---• to ト ••-•• no ノ ••-- ho ホ -•• mo モ -••-• yo ヨ -- ro ロ •-•- wo ヲ •--- Full stop 。 •-•-••

Expanded Katakana Wabun Chart

See also


  1. ^ J. Trogoff, Les grandes dates de la guerre sur mer, 1993, p.266

External links

  • CW Wabun
  • Japanese Code Wabun Morse
  • The Silent War Against the Japanese Navy
  • The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet
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