256 relations: A, ACP 131, Aeronautical chart, Aircraft pilot, Alfred Vail, Amateur radio, Amateur radio repeater, America (airship), American Morse code, American Radio Relay League, Ampersand, Apostrophe, Arabic numerals, Asheville, North Carolina, Assistive technology, At sign, Atlantic Ocean, Automatic Transmitter Identification System (television), Aviation, À, Ä, Å, Æ, Ç, È, É, Ñ, Ó, Ö, Ø, Ü, Ą, Ć, Ĉ, Ę, Ĝ, Ĥ, Ĵ, Ł, Ń, Ś, Ŝ, Š, Ŭ, Ź, Ż, B, Bandwidth (signal processing), Beat frequency oscillator, Belgium, ..., Bit, Blitzkrieg, Boy Scouts of America, Bracket, British Army, C, Call sign, Carl August von Steinheil, Carl Friedrich Gauss, Cayo Largo del Sur, Ch (digraph), Charles Lindbergh, Charles Wheatstone, Chinese characters, Chinese language, Chinese telegraph code, Colon (punctuation), Comma, Communication protocol, Continuous wave, Cuxhaven, D, D with stroke, Damped wave, Delimiter, Dichotomic search, Digital data, Digraph (orthography), Disability, Dollar sign, DXing, E, Electric current, Electrical telegraph, Electricity, Electromagnet, Email, Encryption, Engadget, England, English language, Entropy encoding, Equals sign, Eth, Exclamation mark, F, Federal Communications Commission, Forward error correction, Fraction (mathematics), France, French Navy, Frequency-shift keying, Friedrich Clemens Gerke, Full stop, G, Girl Guides, Global Maritime Distress and Safety System, Guglielmo Marconi, Guinness World Records, H, Hamburg, Hangul, Heathkit, Heliograph, Hertz, High frequency, High-speed telegraphy, Hog-Morse, Hyphen, I, Indefinite and fictitious numbers, Information theory, Instructograph, International Amateur Radio Union, International Telecommunication Union, ISO 4217, ISO basic Latin alphabet, Italy, ITU-R, J, Jeremiah Denton, Joseph Henry, K, Keyer, Korean language, KPH (radio station), L, Latin script, Link budget, Link margin, List of Cambridge Companions to Music, Ludwig van Beethoven, M, Mediterranean Sea, Military aircraft, Morristown, New Jersey, Morse code abbreviations, Morse code mnemonics, Museum ship, N, NATO phonetic alphabet, Naval base, Navigator, Nazi Germany, Netherlands, New York City, Nokia, Non-directional beacon, North Africa, Numerical digit, O, Ogg, On-off keying, P, Paris, Phillips Code, Physicist, Plus and minus signs, Poland, Popular Science, Prisoner of war, Prosigns for Morse code, Q, Q code, QRP operation, QST, Question mark, Quotation mark, R, Radio, Radio frequency, Radio navigation, Radio silence, Radio Society of Great Britain, Radioteletype, Robert Baden-Powell, 1st Baron Baden-Powell, Russian language, Russian Morse code, S, Samuel Morse, Scout plane, Semicolon, Signal lamp, Single-sideband modulation, Sip-and-puff, SKATS, Slash (punctuation), SMS, Software, SOS, Southern Cross (aircraft), Soviet Union, Spark-gap transmitter, Spirit of St. Louis, Stroke, Submarine communications cable, Symphony No. 5 (Beethoven), T, Tap code, Telecommunication, Telegraph key, Telegraphy, The Codebreakers, The CW Operators' Club, Theodore Roosevelt McElroy, Thorn (letter), Time constant, Transmitter, U, Underscore, United States Air Force, United States Army, United States Coast Guard, United States Navy, V, VHF omnidirectional range, Vilo Acuña Airport, W, W1AW, Wabun code, Warship, Wehrmacht, White space (visual arts), Wilhelm Eduard Weber, William Fothergill Cooke, Wireless telegraphy, Words per minute, World War I, World War II, Written language, X, Y, Z, 0, 1, 160-meter band, 2, 2200-meter band, 3, 4, 5, 500 kHz, 6, 7, 8, 9. Expand index (206 more) » « Shrink index
A (named, plural As, A's, as, a's or aes) is the first letter and the first vowel of the ISO basic Latin alphabet.
ACP-131 is the controlling publication for the listing of Q codes and Z codes.
An aeronautical chart is a map designed to assist in navigation of aircraft, much as nautical charts do for watercraft, or a roadmap for drivers.
An aircraft pilot or aviator is a person who controls the flight of an aircraft by operating its directional flight controls.
Alfred Lewis Vail (September 25, 1807 – January 18, 1859) was an American machinist and inventor.
Amateur radio, also known as ham radio, describes the use of radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communication.
An amateur radio repeater is an electronic device that receives a weak or low-level amateur radio signal and retransmits it at a higher level or higher power, so that the signal can cover longer distances without degradation.
The America was a non-rigid airship built by Mutin Godard in France in 1906 for the journalist Walter Wellman's attempt to reach the North Pole by air.
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 telegraph.
The American Radio Relay League (ARRL) is the largest membership association of amateur radio enthusiasts in the USA.
The ampersand is the logogram &, representing the conjunction "and".
The apostrophe ( ' or) character is a punctuation mark, and sometimes a diacritical mark, in languages that use the Latin alphabet and some other alphabets.
Arabic numerals, also called Hindu–Arabic numerals, are the ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, based on the Hindu–Arabic numeral system, the most common system for the symbolic representation of numbers in the world today.
Asheville is a city and the county seat of Buncombe County, North Carolina, United States.
Assistive technology is an umbrella term that includes assistive, adaptive, and rehabilitative devices for people with disabilities while also including the process used in selecting, locating, and using them.
The at sign, @, is normally read aloud as "at"; it is also commonly called the at symbol or commercial at.
The Atlantic Ocean is the second largest of the world's oceans with a total area of about.
The Automatic Transmitter Identification System (ATIS) is a communications protocol used for the station identification of television channels carried on satellite TV.
Aviation, or air transport, refers to the activities surrounding mechanical flight and the aircraft industry.
À, à (a-grave) is a letter of the Catalan, Emilian-Romagnol, French, Galician, Italian, Occitan, Portuguese, Scottish Gaelic, Vietnamese, and Welsh languages consisting of the letter A of the ISO basic Latin alphabet and a grave accent.
Ä (lower case ä) is a character that represents either a letter from several extended Latin alphabets, or the letter A with an umlaut mark or diaeresis.
Å (lower case: å) — represents various (although often very similar) sounds in several languages.
Æ (minuscule: æ) is a grapheme named æsc or ash, formed from the letters a and e, originally a ligature representing the Latin diphthong ae.
Ç or ç (c-cedilla) is a Latin script letter, used in the Albanian, Azerbaijani, Manx, Portuguese, Tatar, Turkish, Turkmen, Kurdish and Zazaki alphabets.
"È" is a letter.
É, é (e-acute) is a letter of the Latin alphabet.
Ñ (lower case ñ, eñe, Phonetic Alphabet: "énye") is a letter of the modern Latin alphabet, formed by placing a tilde (called a virgulilla in Spanish) on top of an upper- or lowercase N. It became part of the Spanish alphabet in the eighteenth century when it was first formally defined, but it is also used in other languages such as Galician, Asturian, the Aragonese Grafía de Uesca, Basque, Chavacano, Filipino, Chamorro, Guarani, Quechua, Mapudungun, Mandinka, and Tetum alphabets, as well as in Latin transliteration of Tocharian and Sanskrit, where it represents.
Ó, ó (o-acute) is a letter in the Czech, Emilian-Romagnol, Faroese, Hungarian, Icelandic, Kashubian, Kazakh, Polish, Slovak, and Sorbian languages.
Ö, or ö, is a character that represents either a letter from several extended Latin alphabets, or the letter o modified with an umlaut or diaeresis.
Ø (or minuscule: ø) is a vowel and a letter used in the Danish, Norwegian, Faroese, and Southern Sami languages.
Ü, or ü, is a character that typically represents a close front rounded vowel.
Ą (minuscule: ą) is a letter in the Polish, Kashubian, Lithuanian, Creek, Navajo, Western Apache, Chiricahua, Osage, Hocąk, Mescalero, Gwich'in, Tutchone, and Elfdalian alphabets.
The grapheme Ć (minuscule: ć), formed from C with the addition of an acute accent, is used in various languages.
Ĉ or ĉ (C circumflex) is a consonant in Esperanto orthography, representing the sound.
Ę (minuscule: ę; Polish E z ogonkiem, "E with a little tail"; Lithuanian e nosinė, "e nasal") is a letter in the Polish alphabet, Lithuanian alphabet, and the Dalecarlian alphabet.
Ĝ or ĝ (G circumflex) is a consonant in Esperanto orthography, representing a voiced postalveolar affricate (either palato-alveolar or retroflex), and is equivalent to a voiced postalveolar affricate or a voiced retroflex affricate.
Ĥ or ĥ is a consonant in Esperanto orthography, representing a voiceless velar fricative or voiceless uvular fricative.
Ĵ or ĵ (J circumflex) is a letter in Esperanto orthography representing the sound.
Ł or ł, described in English as L with stroke, is a letter of the West Slavic (Polish, Kashubian, and Sorbian), Łacinka (Latin Belarusian), Łatynka (Latin Ukrainian), Wymysorys, Navajo, Dene Suline, Inupiaq, Zuni, Hupa, and Dogrib alphabets, several proposed alphabets for the Venetian language, and the ISO 11940 romanization of the Thai alphabet.
Ń (minuscule: ń) is a letter formed by putting an acute accent over the letter N. In the Belarusian Łacinka alphabet; the alphabets of Polish, Kashubian, Wymysorys and the Sorbian languages; and the romanization of Khmer, it represents, which is the same as Czech and Slovak ň, Serbo-Croatian nj, Spanish ñ, Italian and French gn, Hungarian and Catalan ny, and Portuguese nh.
Ś (minuscule: ś) is a letter of the Latin alphabet, formed from S with the addition of an acute accent.
Ŝ or ŝ (S circumflex) is a consonant in Esperanto orthography, representing the sound.
The grapheme Š, š (S with caron) is used in various contexts representing the đ sound usually denoting the voiceless postalveolar fricative or similar voiceless retroflex fricative /ʂ/.
Ŭ or ŭ is a letter in the Esperanto alphabet, based on u. It is also used in the Belarusian language, when written in the 20th-century form of the Belarusian Latin alphabet.
Ź (minuscule: ź) is a letter of the Latin alphabet, formed from Z with the addition of an acute accent.
Ż, ż (Z with overdot) is a letter, consisting of the letter Z of the ISO basic Latin alphabet and an overdot.
B or b (pronounced) is the second letter of the ISO basic Latin alphabet.
Bandwidth is the difference between the upper and lower frequencies in a continuous band of frequencies.
In a radio receiver, a beat frequency oscillator or BFO is a dedicated oscillator used to create an audio frequency signal from Morse code radiotelegraphy (CW) transmissions to make them audible.
Belgium, officially the Kingdom of Belgium, is a country in Western Europe bordered by France, the Netherlands, Germany and Luxembourg.
The bit (a portmanteau of binary digit) is a basic unit of information used in computing and digital communications.
Blitzkrieg (German, "lightning war") is a method of warfare whereby an attacking force, spearheaded by a dense concentration of armoured and motorised or mechanised infantry formations with close air support, breaks through the opponent's line of defence by short, fast, powerful attacks and then dislocates the defenders, using speed and surprise to encircle them with the help of air superiority.
The Boy Scouts of America (BSA) is one of the largest Scouting organizations in the United States of America and one of the largest youth organizations in the United States, with more than 2.4 million youth participants and nearly one million adult volunteers.
A bracket is a tall punctuation mark typically used in matched pairs within text, to set apart or interject other text.
The British Army is the principal land warfare force of the United Kingdom, a part of British Armed Forces.
C is the third letter in the English alphabet and a letter of the alphabets of many other writing systems which inherited it from the Latin alphabet.
In broadcasting and radio communications, a call sign (also known as a call name or call letters—and historically as a call signal—or abbreviated as a call) is a unique designation for a transmitter station.
Carl August von Steinheil (12 October 1801 – 14 September 1870) was a German physicist, inventor, engineer and astronomer.
Johann Carl Friedrich Gauss (Gauß; Carolus Fridericus Gauss; 30 April 177723 February 1855) was a German mathematician and physicist who made significant contributions to many fields, including algebra, analysis, astronomy, differential geometry, electrostatics, geodesy, geophysics, magnetic fields, matrix theory, mechanics, number theory, optics and statistics.
Cayo Largo del Sur, or simply Cayo Largo ("Long Cay"), is a small resort island in Cuba, off the south coast of the northwestern part of the main island in the Caribbean Sea.
Ch is a digraph in the Latin script.
Charles Augustus Lindbergh (February 4, 1902 – August 26, 1974), nicknamed Lucky Lindy, The Lone Eagle, and Slim was an American aviator, military officer, author, inventor, explorer, and environmental activist.
Sir Charles Wheatstone FRS (6 February 1802 – 19 October 1875), was an English scientist and inventor of many scientific breakthroughs of the Victorian era, including the English concertina, the stereoscope (a device for displaying three-dimensional images), and the Playfair cipher (an encryption technique).
Chinese characters are logograms primarily used in the writing of Chinese and Japanese.
Chinese is a group of related, but in many cases mutually unintelligible, language varieties, forming a branch of the Sino-Tibetan language family.
The Chinese telegraph code, Chinese telegraphic code, or Chinese commercial code is a four-digit decimal code (character encoding) for electrically telegraphing messages written with Chinese characters.
The colon is a punctuation mark consisting of two equally sized dots centered on the same vertical line.
The comma is a punctuation mark that appears in several variants in different languages.
In telecommunication, a communication protocol is a system of rules that allow two or more entities of a communications system to transmit information via any kind of variation of a physical quantity.
A continuous wave or continuous waveform (CW) is an electromagnetic wave of constant amplitude and frequency, almost always a sine wave, that for mathematical analysis is considered to be of infinite duration.
Cuxhaven is an independent town and seat of the Cuxhaven district, in Lower Saxony, Germany.
D (named dee) is the fourth letter of the modern English alphabet and the ISO basic Latin alphabet.
Đ (lowercase: đ, Latin alphabet), known as crossed D or dyet, is a letter formed from the base character D/d overlaid with a crossbar.
A damped wave is a wave whose amplitude of oscillation decreases with time, eventually going to zero, an exponentially decaying sinusoidal wave.
A delimiter is a sequence of one or more characters used to specify the boundary between separate, independent regions in plain text or other data streams.
In computer science, a dichotomic search is a search algorithm that operates by selecting between two distinct alternatives (dichotomies) at each step.
Digital data, in information theory and information systems, is the discrete, discontinuous representation of information or works.
A digraph or digram (from the δίς dís, "double" and γράφω gráphō, "to write") is a pair of characters used in the orthography of a language to write either a single phoneme (distinct sound), or a sequence of phonemes that does not correspond to the normal values of the two characters combined.
A disability is an impairment that may be cognitive, developmental, intellectual, mental, physical, sensory, or some combination of these.
The dollar sign ($ or) is a symbol primarily used to indicate the various units of currency around the world.
DXing is the hobby of receiving and identifying distant radio or television signals, or making two way radio contact with distant stations in amateur radio, citizens' band radio or other two way radio communications.
E (named e, plural ees) is the fifth letter and the second vowel in the modern English alphabet and the ISO basic Latin alphabet.
An electric current is a flow of electric charge.
An electrical telegraph is a telegraph that uses electrical signals, usually conveyed via dedicated telecommunication circuit or radio.
Electricity is the set of physical phenomena associated with the presence and motion of electric charge.
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.
Electronic mail (email or e-mail) is a method of exchanging messages ("mail") between people using electronic devices.
In cryptography, encryption is the process of encoding a message or information in such a way that only authorized parties can access it and those who are not authorized cannot.
Engadget is a multilingual technology blog network with daily coverage of gadgets and consumer electronics.
England is a country that is part of the United Kingdom.
English is a West Germanic language that was first spoken in early medieval England and is now a global lingua franca.
In information theory an entropy encoding is a lossless data compression scheme that is independent of the specific characteristics of the medium.
The equals sign or equality sign is a mathematical symbol used to indicate equality.
Eth (uppercase: Ð, lowercase: ð; also spelled edh or eð) is a letter used in Old English, Middle English, Icelandic, Faroese (in which it is called edd), and Elfdalian.
The exclamation mark (British English) or exclamation point (some dialects of American English) is a punctuation mark usually used after an interjection or exclamation to indicate strong feelings or high volume (shouting), or show emphasis, and often marks the end of a sentence.
F (named ef) is the sixth letter in the modern English alphabet and the ISO basic Latin alphabet.
The Federal Communications Commission (FCC) is an independent agency of the United States government created by statute (and) to regulate interstate communications by radio, television, wire, satellite, and cable.
In telecommunication, information theory, and coding theory, forward error correction (FEC) or channel coding is a technique used for controlling errors in data transmission over unreliable or noisy communication channels.
A fraction (from Latin fractus, "broken") represents a part of a whole or, more generally, any number of equal parts.
France, officially the French Republic (République française), is a sovereign state whose territory consists of metropolitan France in Western Europe, as well as several overseas regions and territories.
The French Navy (Marine Nationale), informally "La Royale", is the maritime arm of the French Armed Forces.
Frequency-shift keying (FSK) is a frequency modulation scheme in which digital information is transmitted through discrete frequency changes of a carrier signal.
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.
The full point or full stop (British and broader Commonwealth English) or period (North American English) is a punctuation mark.
G (named gee) is the 7th letter in the ISO basic Latin alphabet.
Girl Guides and Girl Scouts are a Scouting movement found worldwide, originally and still largely designed for girls and women only.
The Global Maritime Distress and Safety System (GMDSS) is an internationally agreed-upon set of safety procedures, types of equipment, and communication protocols used to increase safety and make it easier to rescue distressed ships, boats and aircraft.
Guglielmo Marconi, 1st Marquis of Marconi (25 April 187420 July 1937) was an Italian inventor and electrical engineer known for his pioneering work on long-distance radio transmission and for his development of Marconi's law and a radio telegraph system.
Guinness World Records, known from its inception in 1955 until 2000 as The Guinness Book of Records and in previous United States editions as The Guinness Book of World Records, is a reference book published annually, listing world records both of human achievements and the extremes of the natural world.
H (named aitch or, regionally, haitch, plural aitches)"H" Oxford English Dictionary, 2nd edition (1989); Merriam-Webster's Third New International Dictionary of the English Language, Unabridged (1993); "aitch" or "haitch", op.
Hamburg (locally), Hamborg, officially the Free and Hanseatic City of Hamburg (Freie und Hansestadt Hamburg, Friee un Hansestadt Hamborg),Constitution of Hamburg), is the second-largest city of Germany as well as one of the country's 16 constituent states, with a population of roughly 1.8 million people. The city lies at the core of the Hamburg Metropolitan Region which spreads across four German federal states and is home to more than five million people. The official name reflects Hamburg's history as a member of the medieval Hanseatic League, a free imperial city of the Holy Roman Empire, a city-state and one of the 16 states of Germany. Before the 1871 Unification of Germany, it was a fully sovereign state. Prior to the constitutional changes in 1919 it formed a civic republic headed constitutionally by a class of hereditary grand burghers or Hanseaten. The city has repeatedly been beset by disasters such as the Great Fire of Hamburg, exceptional coastal flooding and military conflicts including World War II bombing raids. Historians remark that the city has managed to recover and emerge wealthier after each catastrophe. Situated on the river Elbe, Hamburg is home to Europe's second-largest port and a broad corporate base. In media, the major regional broadcasting firm NDR, the printing and publishing firm italic and the newspapers italic and italic are based in the city. Hamburg remains an important financial center, the seat of Germany's oldest stock exchange and the world's oldest merchant bank, Berenberg Bank. Media, commercial, logistical, and industrial firms with significant locations in the city include multinationals Airbus, italic, italic, italic, and Unilever. The city is a forum for and has specialists in world economics and international law with such consular and diplomatic missions as the International Tribunal for the Law of the Sea, the EU-LAC Foundation, and the UNESCO Institute for Lifelong Learning. In recent years, the city has played host to multipartite international political conferences and summits such as Europe and China and the G20. Former German Chancellor italic, who governed Germany for eight years, and Angela Merkel, German chancellor since 2005, come from Hamburg. The city is a major international and domestic tourist destination. It ranked 18th in the world for livability in 2016. The Speicherstadt and Kontorhausviertel were declared World Heritage Sites by UNESCO in 2015. Hamburg is a major European science, research, and education hub, with several universities and institutions. Among its most notable cultural venues are the italic and italic concert halls. It gave birth to movements like Hamburger Schule and paved the way for bands including The Beatles. Hamburg is also known for several theatres and a variety of musical shows. St. Pauli's italic is among the best-known European entertainment districts.
The Korean alphabet, known as Hangul (from Korean hangeul 한글), has been used to write the Korean language since its creation in the 15th century by Sejong the Great.
Heathkit is the brand name of kits and other electronic products produced and marketed by the Heath Company.
A heliograph (helios, meaning "sun", and graphein, meaning "write") is a wireless solar telegraph that signals by flashes of sunlight (generally using Morse code) reflected by a mirror.
The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.
High frequency (HF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) between 3 and 30 megahertz (MHz).
In amateur radio, high-speed telegraphy (HST) is a form of radiosport that challenges amateur radio operators to accurately receive and copy, and in some competitions to send, Morse code transmissions sent at very high speeds.
Hog-Morse was the tendency of inexperienced telegraph operators to make errors when sending or receiving in Morse code.
The hyphen (‐) is a punctuation mark used to join words and to separate syllables of a single word.
I (named i, plural ies) is the ninth letter and the third vowel in the ISO basic Latin alphabet.
Many languages have words expressing indefinite and fictitious numbers—inexact terms of indefinite size, used for comic effect, for exaggeration, as placeholder names, or when precision is unnecessary or undesirable.
Information theory studies the quantification, storage, and communication of information.
The Instructograph was a paper tape-based machine used for the study of Morse code.
The International Amateur Radio Union (IARU) is an international confederation of national amateur radio organisations that allows a forum for common matters of concern and collectively represents matters to the International Telecommunication Union (ITU).
The International Telecommunication Union (ITU; Union Internationale des Télécommunications (UIT)), originally the International Telegraph Union (Union Télégraphique Internationale), is a specialized agency of the United Nations (UN) that is responsible for issues that concern information and communication technologies.
ISO 4217 is a standard first published by International Organization for Standardization in 1978, which delineates currency designators, country codes (alpha and numeric), and references to minor units in three tables.
The ISO basic Latin alphabet is a Latin-script alphabet and consists of two sets of 26 letters, codified in various national and international standards and used widely in international communication.
Italy (Italia), officially the Italian Republic (Repubblica Italiana), is a sovereign state in Europe.
The ITU Radiocommunication Sector (ITU-R) is one of the three sectors (divisions or units) of the International Telecommunication Union (ITU) and is responsible for radio communication.
J is the tenth letter in the modern English alphabet and the ISO basic Latin alphabet.
Jeremiah Andrew Denton Jr. (July 15, 1924 – March 28, 2014) was a U.S. Senator representing Alabama from 1981 to 1987, a United States Navy Rear Admiral and Naval Aviator taken captive during the Vietnam War.
Joseph Henry (December 17, 1797 – May 13, 1878) was an American scientist who served as the first Secretary of the Smithsonian Institution.
K (named kay) is the eleventh letter of the modern English alphabet and the ISO basic Latin alphabet.
A keyer is a device for signaling by hand, by way of pressing one or more switches.
The Korean language (Chosŏn'gŭl/Hangul: 조선말/한국어; Hanja: 朝鮮말/韓國語) is an East Asian language spoken by about 80 million people.
KPH is a public coast radio station on the West Coast of the United States.
L (named el) is the twelfth letter of the modern English alphabet and the ISO basic Latin alphabet, used in words such as lagoon, lantern, and less.
Latin or Roman script is a set of graphic signs (script) based on the letters of the classical Latin alphabet, which is derived from a form of the Cumaean Greek version of the Greek alphabet, used by the Etruscans.
A link budget is accounting of all of the gains and losses from the transmitter, through the medium (free space, cable, waveguide, fiber, etc.) to the receiver in a telecommunication system.
In a wireless communication system, the link margin, measured in dB, is the difference between the receiver's sensitivity (i.e., the received power at which the receiver will stop working) and the expected minimum received power.
The Cambridge Companions to Music form a book series published by Cambridge University Press.
Ludwig van Beethoven (baptised 17 December 1770Beethoven was baptised on 17 December. His date of birth was often given as 16 December and his family and associates celebrated his birthday on that date, and most scholars accept that he was born on 16 December; however there is no documentary record of his birth.26 March 1827) was a German composer and pianist.
M (named em) is the thirteenth letter of the modern English alphabet and the ISO basic Latin alphabet.
The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Southern Europe and Anatolia, on the south by North Africa and on the east by the Levant.
A military aircraft is any fixed-wing or rotary-wing aircraft that is operated by a legal or insurrectionary armed service of any type.
Morristown is a town and county seat of Morris County, New Jersey, United States.
Morse code abbreviations are used to speed up Morse communications by foreshortening textual words and phrases.
Morse code mnemonics are systems to represent the sound of Morse characters in a way intended to be easy to remember.
A museum ship, also called a memorial ship, is a ship that has been preserved and converted into a museum open to the public for educational or memorial purposes.
N (named en) is the fourteenth letter in the modern English alphabet and the ISO basic Latin alphabet.
The NATO phonetic alphabet, officially denoted as the International Radiotelephony Spelling Alphabet, and also commonly known as the ICAO phonetic alphabet, and in a variation also known officially as the ITU phonetic alphabet and figure code, is the most widely used radiotelephone spelling alphabet.
A naval base, navy base, or military port is a military base, where warships and naval ships are docked when they have no mission at sea or want to restock.
A navigator is the person on board a ship or aircraft responsible for its navigation.
Nazi Germany is the common English name for the period in German history from 1933 to 1945, when Germany was under the dictatorship of Adolf Hitler through the Nazi Party (NSDAP).
The Netherlands (Nederland), often referred to as Holland, is a country located mostly in Western Europe with a population of seventeen million.
The City of New York, often called New York City (NYC) or simply New York, is the most populous city in the United States.
Nokia is a Finnish multinational telecommunications, information technology, and consumer electronics company, founded in 1865.
A non-directional (radio) beacon (NDB) is a radio transmitter at a known location, used as an aviation or marine navigational aid.
North Africa is a collective term for a group of Mediterranean countries and territories situated in the northern-most region of the African continent.
A numerical digit is a single symbol (such as "2" or "5") used alone, or in combinations (such as "25"), to represent numbers (such as the number 25) according to some positional numeral systems.
O (named o, plural oes) is the 15th letter and the fourth vowel in the modern English alphabet and the ISO basic Latin alphabet.
Ogg is a free, open container format maintained by the Xiph.Org Foundation.
On-off keying (OOK) denotes the simplest form of amplitude-shift keying (ASK) modulation that represents digital data at the presence or absence of a carrier wave.
P (named pee) is the 16th letter of the modern English alphabet and the ISO basic Latin alphabet.
Paris is the capital and most populous city of France, with an area of and a population of 2,206,488.
The Phillips Code is a brevity code (shorthand) created in 1879 by Walter P. Phillips (then of the Associated Press) for the rapid transmission of press reports by telegraph.
A physicist is a scientist who has specialized knowledge in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe.
The plus and minus signs (+ and −) are mathematical symbols used to represent the notions of positive and negative as well as the operations of addition and subtraction.
Poland (Polska), officially the Republic of Poland (Rzeczpospolita Polska), is a country located in Central Europe.
Popular Science (also known as PopSci) is an American quarterly magazine carrying popular science content, which refers to articles for the general reader on science and technology subjects.
A prisoner of war (POW) is a person, whether combatant or non-combatant, who is held in custody by a belligerent power during or immediately after an armed conflict.
Procedure signs or prosigns are shorthand signals used in radio telegraphy procedures, for the purpose of simplifying and standardizing communications related to radio operating issues among two or more radio operators.
Q (named cue) is the 17th letter of the modern English alphabet and the ISO basic Latin alphabet.
The Q code is a standardized collection of three-letter codes all of which start with the letter "Q".
In amateur radio, QRP operation refers to transmitting at reduced power while attempting to maximize one's effective range.
QST is a magazine for amateur radio enthusiasts, published by the American Radio Relay League (ARRL).
The question mark (also known as interrogation point, query, or eroteme in journalism) is a punctuation mark that indicates an interrogative clause or phrase in many languages.
Quotation marks, also called quotes, quote marks, quotemarks, speech marks, inverted commas or talking marks, are punctuation marks used in pairs in various writing systems to set off direct speech, a quotation, or a phrase.
R (named ar/or) is the 18th letter of the modern English alphabet and the ISO basic Latin alphabet.
Radio is the technology of using radio waves to carry information, such as sound, by systematically modulating properties of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width.
Radio frequency (RF) refers to oscillatory change in voltage or current in a circuit, waveguide or transmission line in the range extending from around twenty thousand times per second to around three hundred billion times per second, roughly between the upper limit of audio and the lower limit of infrared.
Radio navigation or radionavigation is the application of radio frequencies to determine a position of an object on the Earth.
In telecommunications, radio silence or Emissions Control (EMCON) is a status in which all fixed or mobile radio stations in an area are asked to stop transmitting for safety or security reasons.
The Radio Society of Great Britain (RSGB), first founded in 1913 as the London Wireless Club, is the United Kingdom's recognised national society for amateur radio operators.
Radioteletype (RTTY) is a telecommunications system consisting originally of two or more electromechanical teleprinters in different locations connected by radio rather than a wired link.
Lieutenant-General Robert Stephenson Smyth Baden-Powell, 1st Baron Baden-Powell, (22 February 1857 – 8 January 1941) was a British Army officer, writer, author of Scouting for Boys which was an inspiration for the Scout Movement, founder and first Chief Scout of The Boy Scouts Association and founder of the Girl Guides.
Russian (rússkiy yazýk) is an East Slavic language, which is official in Russia, Belarus, Kazakhstan and Kyrgyzstan, as well as being widely spoken throughout Eastern Europe, the Baltic states, the Caucasus and Central Asia.
The Russian Morse code approximates the Morse code for the Latin alphabet.
S (named ess, plural esses) is the 19th letter in the Modern English alphabet and the ISO basic Latin alphabet.
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 the invention of a single-wire telegraph system based on European telegraphs. He was a co-developer of the Morse code and helped to develop the commercial use of telegraphy.
A scout plane is type of surveillance aircraft, usually of single-engined, two/three seats, shipborne type, and used for the purpose of discovering an enemy position and directing artillery.
The semicolon or semi colon is a punctuation mark that separates major sentence elements.
A signal lamp (sometimes called an Aldis lamp, after Arthur Cyril Webb Aldis who invented a widely used design, or a Morse lamp) is a visual signaling device for optical communication, typically using Morse code.
In radio communications, single-sideband modulation (SSB) or single-sideband suppressed-carrier modulation (SSB-SC) is a type of modulation, used to transmit information, such as an audio signal, by radio waves.
Sip-and-puff or sip 'n' puff (SNP) is assistive technology used to send signals to a device using air pressure by "sipping" (inhaling) or "puffing" (exhaling) on a straw, tube or "wand." It is primarily used by people who do not have the use of their hands.
SKATS stands for Standard Korean Alphabet Transliteration System.
The slash is an oblique slanting line punctuation mark.
SMS (short message service) is a text messaging service component of most telephone, internet, and mobile-device systems.
Computer software, or simply software, is a generic term that refers to a collection of data or computer instructions that tell the computer how to work, in contrast to the physical hardware from which the system is built, that actually performs the work.
is the International Morse code distress signal; the bar over it indicates to omit the normal gaps between the letters.
Southern Cross is the name of the Fokker F.VIIb/3m trimotor monoplane that in 1928 was flown by Australian aviator Charles Kingsford Smith, Charles Ulm, Harry Lyon and James Warner in the first-ever trans-Pacific flight to Australia from the mainland United States, a distance of about.
The Soviet Union, officially the Union of Soviet Socialist Republics (USSR) was a socialist state in Eurasia that existed from 1922 to 1991.
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.
The Spirit of St.
A stroke is a medical condition in which poor blood flow to the brain results in cell death.
A submarine communications cable is a cable laid on the sea bed between land-based stations to carry telecommunication signals across stretches of ocean and sea.
The Symphony No.
T (named tee) is the 20th letter in the modern English alphabet and the ISO basic Latin alphabet.
The tap code, sometimes called the knock code, is a way to encode text messages on a letter-by-letter basis in a very simple way.
Telecommunication is the transmission of signs, signals, messages, words, writings, images and sounds or information of any nature by wire, radio, optical or other electromagnetic systems.
A telegraph key is a switching device used primarily to send Morse code.
Telegraphy (from Greek: τῆλε têle, "at a distance" and γράφειν gráphein, "to write") is the long-distance transmission of textual or symbolic (as opposed to verbal or audio) messages without the physical exchange of an object bearing the message.
The Codebreakers – The Story of Secret Writing is a book by David Kahn, published in 1967 comprehensively chronicling the history of cryptography from ancient Egypt to the time of its writing.
The CW Operators' Club, commonly known as CWops, is an international organization, in membership and management, for amateur radio operators who enjoy communicating using Morse Code.
Theodore Roosevelt McElroy (September 15, 1901 – November 1963) was an American telegraph operator and a radio telegrapher.
Thorn or þorn (Þ, þ) is a letter in the Old English, Gothic, Old Norse and modern Icelandic alphabets, as well as some dialects of Middle English.
In physics and engineering, the time constant, usually denoted by the Greek letter τ (tau), is the parameter characterizing the response to a step input of a first-order, linear time-invariant (LTI) system.
In electronics and telecommunications, a transmitter or radio transmitter is an electronic device which produces radio waves with an antenna.
U (named u, plural ues) is the 21st letter and the fifth vowel in the ISO basic Latin alphabet.
The symbol underscore (_), also called underline, low line or low dash, is a character that originally appeared on the typewriter and was primarily used to underline words.
The United States Air Force (USAF) is the aerial and space warfare service branch of the United States Armed Forces.
The United States Army (USA) is the land warfare service branch of the United States Armed Forces.
The United States Coast Guard (USCG) is a branch of the United States Armed Forces and one of the country's seven uniformed services.
The United States Navy (USN) is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States.
V (named vee) is the 22nd letter in the modern English alphabet and the ISO basic Latin alphabet.
Very High Frequency (VHF) Omni-Directional Range (VOR) is a type of short-range radio navigation system for aircraft, enabling aircraft with a receiving unit to determine their position and stay on course by receiving radio signals transmitted by a network of fixed ground radio beacons.
Vilo Acuña Airport (Aeropuerto Internacional Vilo Acuña) is an international airport serving Cayo Largo del Sur, a small coral island in Cuba.
W (named double-u,Pronounced plural double-ues) is the 23rd letter of the modern English and ISO basic Latin alphabets.
W1AW is both the amateur radio call sign and the primary operating station of the American Radio Relay League (ARRL).
The is a form of Morse code used to send Japanese text.
A warship is a naval ship that is built and primarily intended for naval warfare.
The Wehrmacht (lit. "defence force")From wehren, "to defend" and Macht., "power, force".
In page layout, illustration and sculpture, white space is often referred to as negative space.
Wilhelm Eduard Weber (24 October 1804 – 23 June 1891) was a German physicist and, together with Carl Friedrich Gauss, inventor of the first electromagnetic telegraph.
Sir William Fothergill Cooke (4 May 1806 – 25 June 1879) was an English inventor.
Wireless telegraphy is the transmission of telegraphy signals from one point to another by means of an electromagnetic, electrostatic or magnetic field, or by electrical current through the earth or water.
Words per minute, commonly abbreviated wpm (sometimes uppercased WPM), is a measure of words processed in a minute, often used as a measurement of the speed of typing, reading or Morse code sending and receiving.
World War I (often abbreviated as WWI or WW1), also known as the First World War, the Great War, or the War to End All Wars, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918.
World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although conflicts reflecting the ideological clash between what would become the Allied and Axis blocs began earlier.
A written language is the representation of a spoken or gestural language by means of a writing system.
X (named ex, plural exes) is the 24th and antepenultimate letter in the modern English alphabet and the ISO basic Latin alphabet.
Y (named wye, plural wyes) is the 25th and penultimate letter in the modern English alphabet and the ISO basic Latin alphabet.
Z (named zed or zee "Z", Oxford English Dictionary, 2nd edition (1989); Merriam-Webster's Third New International Dictionary of the English Language, Unabridged (1993); "zee", op. cit.) is the 26th and final letter of the modern English alphabet and the ISO basic Latin alphabet.
0 (zero) is both a number and the numerical digit used to represent that number in numerals.
1 (one, also called unit, unity, and (multiplicative) identity) is a number, numeral, and glyph.
Just above the mediumwave broadcast band, 160 meters refers to the band of radio frequencies between 1800 and 2000 kHz, which is the lowest radio frequency band allocated for use by amateur radio in most countries.
2 (two) is a number, numeral, and glyph.
The 2200 meter or 136 kHz band is the lowest frequency band in which amateur radio operators are allowed to transmit.
3 (three) is a number, numeral, and glyph.
4 (four) is a number, numeral, and glyph.
5 (five) is a number, numeral, and glyph.
The radio frequency of 500 kilohertz (500 kHz) has been an international calling and distress frequency for Morse code maritime communication since early in the 20th century.
6 (six) is the natural number following 5 and preceding 7.
7 (seven) is the natural number following 6 and preceding 8.
8 (eight) is the natural number following 7 and preceding 9.
9 (nine) is the natural number following and preceding.
Di-dah, Dit-dah, Farnsworth method, Hamburg Alphabet, Hamburg alphabet, International Morse Code, International Morse code, Koch method, Latin Morse code, Mor's code, More's code, Moris code, Morris code, Mors code, Morse Code, Morse Code (table), Morse alphabet, Morse-code, Morsecode, Omnigraph.