Morse code
Morse code is a method of transmitting text information as a series of on-off tones, lights, or clicks that can be directly understood by a skilled listener or observer without special equipment. The ...
Morse code - Wikipedia
See and hear Morse Code - YouTube
Apr 27, 2009 ... A video I created to help myself learn Morse Code. ... International Morse Code: Lesson 1by merryviking32,248 views; 11:11. Watch Later
Prosigns for Morse code
In Morse code, prosigns or procedural signals are dot/dash sequences that do not represent text per se, but have a special meaning in a transmission: they are generally not copied down, they are a tel...
Other alphabets in Morse code
This is a summary of the use of Morse code to represent alphabets other than Latin.
The Greek Morse code alphabet is very similar to the Latin alphabet. It uses one extra letter for Greek letter Χ...
Other alphabets in Morse code - Wikipedia
Huffman coding
In computer science and information theory, a Huffman code is an optimal prefix code found using the algorithm developed by David A. Huffman while he was a Ph.D. student at MIT, and published in the 1...
Huffman coding - Wikipedia
Alfred Vail
Alfred Lewis Vail (September 25, 1807 – January 18, 1859) was an American machinist and inventor. Vail was central, with Samuel F. B. Morse, in developing and commercializing the telegraph between 18...
Alfred Vail - Wikipedia
Q code
The Q code is a standardized collection of three-letter message encodings, also known as a brevity code, all of which start with the letter "Q", initially developed for commercial radiotelegraph commu...
Samuel Morse
Samuel Finley Breese Morse (April 27, 1791 – April 2, 1872) was an American painter and inventor. After having established his reputation as a portrait painter, in his middle age Morse contributed to...
Samuel Morse - Wikipedia
Hog morse
Hog-morse was the tendency of inexperienced telegraph operators to make errors when sending or receiving in morse code, so called after one example, "home" becoming "hog". One example given in the li...
Instructograph
The Instructograph was a paper tape-based machine used for the study of Morse code.The paper tape mechanism consisted of two reels which passed a paper tape across a reading device that actuated a set...
Russian Morse code
The Russian Morse code approximates the Morse code for the Latin alphabet. To memorize the codes, mnemonics are used, called "melodies" (напевы).A "melody" for a morse code for a character is a phrase...
Signal lamp
A signal lamp (sometimes called an Aldis lamp, named after Arthur Cyril Webb Aldis who invented a widely used design) is a visual signaling device for optical communication (typically using Morse code...
Signal lamp - Wikipedia
Friedrich Clemens Gerke
Friedrich Clemens Gerke (22 January 1801 – 21 May 1888) was a German writer, journalist, musician and pioneer of telegraphy who revised the Morse code in 1848. It is Gerke's notation which is used tod...
Friedrich Clemens Gerke - Wikipedia
Morse code abbreviations
Morse code abbreviations differ from prosigns for Morse code in that they observe normal interletter spacing; that is, they are not "run together" the way prosigns are. From 1845 until well into the s...
SOS
SOS is the international Morse code distress signal (· · · – – – · · ·). This distress signal was first adopted by the German government in radio regulations e...
Chinese telegraph code
The Chinese Telegraph Code, Chinese Telegraphic Code, or Chinese Commercial Code (simplified Chinese: 中文电码; traditional Chinese: 中文電碼; pinyin: Zhōngwén diànmǎ or simplified Chinese: 中文...
Chinese telegraph code - Wikipedia
Z code
Z Code (like Q Code and X Code) is a set of codes used in CW, TTY and RTTY radio communication. Actually, there are different sets of Z-codes: one originally developed by Cable & Wireless Ltd., fo...
Modulated continuous wave
Modulated continuous wave is defined by the Federal Communications Commission in 47 CFR §97.3(c)(4) as "Tone-modulated international Morse code telegraphy emissions having designators with A, C, D, F,...
SKATS
SKATS stands for Standard Korean Alphabet Transliteration System. It is also known as Korean Morse equivalents. Despite the name, SKATS is not a true transliteration system. SKATS maps the Hangul char...
Morse code mnemonics

Although people can learn a mnemonic table quickly, mnemonics alone will not give anyone fluency in sending, hearing and decoding Morse code at a practical speed. There are other methods to learn...
Morse code mnemonics - Wikipedia
Telegraph key
Telegraph key is a general term for any switching device used primarily to send Morse code. Similar keys are used for all forms of manual telegraphy, such as in ‘wire’ or electrical telegraph and ‘wi...
Telegraph key - Wikipedia
CQD
CQD, transmitted in Morse code as  – · – ·    – – · –    – · ·  is one of the first distress signals adopted f...
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 ...
Wabun code - Wikipedia
CQ (call)
CQ call of German amateur radio station DG2RBH on the 80 m bandCQ is a code used by wireless operators, particularly those communicating in Morse code, (-.-. --.-), but also by voice operators, to m...
American Morse code
American Morse Code — also known as Railroad Morse—is the latter-day name for the original version of the Morse Code developed in the mid-1840s, by Samuel Morse and Alfred Vail for their electric tele...
American Morse code - Wikipedia
Aviation light signals
In the case of a radio failure or aircraft not equipped with a radio, or in the case of a deaf pilot, air traffic control may use a signal lamp to direct the aircraft. The signal lamp has a focused br...
Aviation light signals - Wikipedia
500 kHz
Since early in the 20th century, the radio frequency of 500 kilohertz (500 kHz) has been an international calling and distress frequency for Morse code maritime communication. The unit kilo...
Morse code for non-Latin alphabets
This is a summary of the use of Morse code to represent alphabets other than Latin.
The Greek Morse code alphabet is very similar to the Latin alphabet. It uses one extra letter for Greek letter Χ...
Morse code for non-Latin alphabets - Wikipedia