WESTERN UNION "92 CODE" & WOOD'S "TELEGRAPHIC NUMERALS"1859 Western Union "92 Code" & Wood's 1864 "Telegraphic Numerals" & Comparison of Alphabetic Telegraph Codes The "92 Code" was first adopted by Western Union in 1859. The reason for this adoption was to reduce bandwidth over the telegraph lines and speed transmissions by utilizing a numerical code system for various frequently used phrases. The following code is taken from The Telegraph Instructor
https://a1club.org/knowhow/st-key.htm
VOACAP Voice of America Coverage Analysis Program
縦振電鍵送信術入門
ＪＡ７ＹＡＦの秘密
