The Art and Skill of Radio-Telegraphy
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Alpha • Bravo • Charlie
ALPHA • BRAVO • CHARLIE Inspired by Alpha, Bravo, Charlie (published by Phaidon) these Perfect activity sheets introduce young people to four different nautical codes. There are messages to decode, questions to answer for curious and some fun facts to share with friends and family. 5-7 year olds FLAG IT UP These bright, colorful flags are known as signal flags. There is one flag for each letter of the alphabet. 1. What is the right-hand side of a ship called? Use the flags to decode the answer! 3. Draw and color the flag that represents the first letter of your name. 2. Draw and color flags to spell out this message: SHIP AHOY SH I P AHOY FUN FACT Each flag also has its own To purchase your copy of meaning when it's flown by 2. Alpha, Bravo, Charlie visit phaidon.com/childrens2016 itself. For example, the N flag by STARBOARD 1. itself means "No" or "Negative". Answers: ALPHA OSCAR KILO The Phonetic alphabet matches every letter with a word so that letters can’t be mixed up and sailors don’t get the wrong message. 1. Write in the missing first letters from these words in the Phonetic alphabet. What word have you spelled out? Write it in here: HINT: The word for things that are transported by ship. 2. Can you decode the answer to this question: What types of cargo did Clipper ships carry in the 1800s? 3. Use the Phonetic alphabet to spell out your first name. FUN FACT The Phonetic alphabet’s full name is the GOLD AND WOOL International Radiotelephony Spelling Alphabet. -
UNIT 2 Braille
Mathematics Enhancement Programme Codes and UNIT 2 Braille Lesson Plan 1 Braille Ciphers Activity Notes T: Teacher P: Pupil Ex.B: Exercise Book 1 Introduction T: What code, designed more than 150 years ago, is still used Whole class interactive extensively today? discussion. T: The system of raised dots which enables blind people to read was Ps might also suggest Morse code designed in 1833 by a Frenchman, Louis Braille. or semaphore. Does anyone know how it works? Ps might have some ideas but are T: Braille uses a system of dots, either raised or not, arranged in unlikely to know that Braille uses 3 rows and 2 columns. a 32× configuration. on whiteboard Here are some possible codes: ape (WB). T puts these three Braille letters on WB. T: What do you notice? (They use different numbers of dots) T: We will find out how many possible patterns there are. 10 mins 2 Number of patterns T: How can we find out how many patterns there are? Response will vary according to (Find as many as possible) age and ability. T: OK – but let us be systematic in our search. What could we first find? (All patterns with one dot) T: Good; who would like to display these on the board? P(s) put possible solutions on the board; T stresses the logical search for these. Agreement. Praising. (or use OS 2.1) T: Working in your exercise books (with squared paper), now find all possible patterns with just 2 dots. T: How many have you found? Allow about 5 minutes for this before reviewing. -
Multimedia Data and Its Encoding
Lecture 14 Multimedia Data and Its Encoding M. Adnan Quaium Assistant Professor Department of Electrical and Electronic Engineering Ahsanullah University of Science and Technology Room – 4A07 Email – [email protected] URL- http://adnan.quaium.com/aust/cse4295 CSE 4295 : Multimedia Communication prepared by M. Adnan Quaium 1 Text Encoding The character by character encoding of an alphabet is called encryption. As a rule, this coding must be reversible – the reverse encoding known as decoding or decryption. Examples for a simple encryption are the international phonetic alphabet or Braille script CSE 4295 : Multimedia Communication prepared by M. Adnan Quaium 2 Text Encoding CSE 4295 : Multimedia Communication prepared by M. Adnan Quaium 3 Morse Code Samuel F. B. Morse and Alfred Vail used a form of binary encoding, i.e., all text characters were encoded in a series of two basic characters. The two basic characters – a dot and a dash – were short and long raised impressions marked on a running paper tape. Word borders are indicated by breaks. CSE 4295 : Multimedia Communication prepared by M. Adnan Quaium 4 Morse Code ● To achieve the most efficient encoding of the transmitted text messages, Morse and Vail implemented their observation that specific letters came up more frequently in the (English) language than others. ● The obvious conclusion was to select a shorter encoding for frequently used characters and a longer one for letters that are used seldom. CSE 4295 : Multimedia Communication prepared by M. Adnan Quaium 5 7 bit ASCII code CSE 4295 : Multimedia Communication prepared by M. Adnan Quaium 6 Unicode Standard ● The Unicode standard assigns a number (code point) and a name to each character, instead of the usual glyph. -
Designing the Haptic Interface for Morse Code Michael Walker University of South Florida, [email protected]
University of South Florida Scholar Commons Graduate Theses and Dissertations Graduate School 10-31-2016 Designing the Haptic Interface for Morse Code Michael Walker University of South Florida, [email protected] Follow this and additional works at: http://scholarcommons.usf.edu/etd Part of the Art Practice Commons, Communication Commons, and the Neurosciences Commons Scholar Commons Citation Walker, Michael, "Designing the Haptic Interface for Morse Code" (2016). Graduate Theses and Dissertations. http://scholarcommons.usf.edu/etd/6600 This Thesis is brought to you for free and open access by the Graduate School at Scholar Commons. It has been accepted for inclusion in Graduate Theses and Dissertations by an authorized administrator of Scholar Commons. For more information, please contact [email protected]. Designing the Haptic Interface for Morse Code by Michael Walker A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Mechanical Engineering Department of Mechanical Engineering College of Engineering University of South Florida Major Professor: Kyle Reed, Ph.D. Stephanie Carey, Ph.D. Don Dekker, Ph.D. Date of Approval: October 24, 2016 Keywords: Bimanual, Rehabilitation, Pattern, Recognition, Perception Copyright © 2016, Michael Walker ACKNOWLEDGMENTS I would like to thank my thesis advisor, Dr. Kyle Reed, for providing guidance for my first steps in research work and exercising patience and understanding through my difficulties through the process of creating this thesis. I am thankful for my colleagues in REED lab, particularly Benjamin Rigsby and Tyagi Ramakrishnan, for providing helpful insight in the design of my experimental setup. TABLE OF CONTENTS LIST OF TABLES ........................................................................................................................ -
Z-Signals Are Completely Different from the Old Cable & Wireless Codes
Z Codes – Military and Commercial Z - CODES - Military & Commercial Z-Codes are mainly used over commercial and military teleprinter, facsimile and high speed automatic telegraphy links and are not normally used by Radio Amateurs, even when using RTTY, but the list is included for general interest. The list and usage data was compiled by Ralf D.Kloth, DL4TA, and is reproduced here with his kind permission. I am grateful to Ralf for this, as he spent a considerable amount of time and effort researching various sources in order to produce his list. The Z-Code was originally developed as a service code by Cable & Wireless Ltd. for usage in the commercial communications business. NATO military Z-signals are completely different from the old Cable & Wireless codes. The NATO military Z-signals, ZAA...ZXZ, are defined in ACP 131, but the series ZYA...ZZZ is reserved for the temporary or permanent assignment of meanings on an intra-military basis by any nation, service or command. In the following table, a non-annotated code denotes the original Cable & Wireless usage, * indicates NATO military usage (ACP- 131(E), 1997) and ** indicates Russian military usage. As the majority of Z-Codes are not normally used as questions, their meanings are given with the answer, advice or information form shown first, with the question form shown in a second column, if appropriate. Z signals shall be read as questions when followed by the interrogation signal (IMI) in civil use or preceded by the prosign (INT) in NATO military use. Note that the numbers 1...5 following a Z signal have the following meanings:- (1) very slight (2) slight (3) moderate (4) severe (5) extreme Code Advice Information or Answer Question ZAA* You are not observing proper circuit discipline. -
SOUNDS of MORSE CODE (Version 2) NUMERALS (10)
SOUNDS OF MORSE CODE (Version 2) NUMERALS (10) Using dots and dashes to represent the sounds of 1 di-DAH-DAH-DAH-DAH Morse code is HIGHLY discouraged. 2 di-di-DAH-DAH-DAH Morse code is a language of SOUND, and by 3 di-di-di-DAH-DAH converting SOUND into dots and dashes, THEN 4 di-di-di-di-DAH converting dots and dashes into the letter the 5 di-di-di-di-dit SOUND represents WILL shoot you in the foot when you try to pick up speed. You can count on it. 6 DAH-di-di-di-dit (Continued next page...) 7 DAH- DAH-di-di-dit 8 DAH- DAH- DAH-di-dit FCC 43 CHARACTERS: 9 DAH-DAH-DAH-DAH-dit LETTERS (26) 0 DAH-DAH-DAH-DAH-DAH A di-DAH PUNCTUATION & PROCEDURALS (7) B DAH-di-di-dit C DAH-di-DAH-dit BT DAH-di-di-di-DAH = (Note 1) D DAH-di-dit ? di-di-DAH-DAH-di-dit E dit / DAH-di-di-DAH-dit F di-di-DAH-dit , DAH-DAH-di-di-DAH-DAH G DAH-DAH-dit . di-DAH-di-DAH-di-DAH H di-di-di-dit AR di-DAH-di-DAH-dit + (N0te 2) I di-dit SK di-di-di-DAH-di-DAH (Note 3) J di-DAH-DAH-DAH K DAH-di-DAH PROSIGNS NEEDED FOR GOOD CW OPERATING, NOT IN THE FCC 43 L di-DAH-di-dit M DAH-DAH BK DAH-di-di-di-DAH-di-DAH (Note 4) N DAH-dit KN DAH-di-DAH-DAH-dit (Note 5) O DAH-DAH-DAH AS di-DAH-di-di-dit (Note 6) P di-DAH-DAH-dit @ di-DAH-DAH-di-DAH-dit (Note 7) Q DAH-DAH-di-DAH error di-di-di-di-di-di-di-dit (Note 8) R di-DAH-dit NOTES S di-di-dit T DAH 1. -
Morse Code (Edited from Wikipedia)
Morse Code (Edited from Wikipedia) SUMMARY 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. It is named for Samuel F. B. Morse, an inventor of the telegraph. The International Morse Code encodes the ISO basic Latin alphabet, some extra Latin letters, the Arabic numerals and a small set of punctuation and procedural signals (prosigns) as standardized sequences of short and long signals called "dots" and "dashes", or "dits" and "dahs", as in amateur radio practice. Because many non-English natural languages use more than the 26 Roman letters, extensions to the Morse alphabet exist for those languages. Each Morse code symbol represents either a text character (letter or numeral) or a prosign and is represented by a unique sequence of dots and dashes. The duration of a dash is three times the duration of a dot. Each dot or dash is followed by a short silence, equal to the dot duration. The letters of a word are separated by a space equal to three dots (one dash), and the words are separated by a space equal to seven dots. The dot duration is the basic unit of time measurement in code transmission. To increase the speed of the communication, the code was designed so that the length of each character in Morse is shorter the more frequently it is used in the language. Thus the most common letter in English, the letter "E", has the shortest code, a single dot. -
Language Reference
Enterprise PL/I for z/OS Version 5 Release 3 Language Reference IBM SC27-8940-02 Note Before using this information and the product it supports, be sure to read the general information under “Notices” on page 613. Third Edition (September 2019) This edition applies to Enterprise PL/I for z/OS Version 5 Release 3 (5655-PL5), and IBM Developer for z/OS PL/I for Windows (former Rational Developer for System z PL/I for Windows), Version 9.1, and to any subsequent releases of any of these products until otherwise indicated in new editions or technical newsletters. Make sure you are using the correct edition for the level of the product. Order publications through your IBM® representative or the IBM branch office serving your locality. Publications are not stocked at the address below. A form for readers' comments is provided at the back of this publication. If the form has been removed, address your comments to: IBM Corporation, Department H150/090 555 Bailey Ave. San Jose, CA, 95141-1099 United States of America When you send information to IBM, you grant IBM a nonexclusive right to use or distribute the information in any way it believes appropriate without incurring any obligation to you. Because IBM Enterprise PL/I for z/OS supports the continuous delivery (CD) model and publications are updated to document the features delivered under the CD model, it is a good idea to check for updates once every three months. © Copyright International Business Machines Corporation 1999, 2019. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. -
Mnlilslffislßl SIGNAL BOOK UNITED STATES ARMY
Uifh '^r MnlilSlffiSlßl SIGNAL BOOK UNITED STATES ARMY v 1916 WASHINGTON GOVERNMENT PRINTING OFFICE 1916 NOV 0 8 1988 WAR DEPARTMENT Document No. 500 Office ofthe Chief Sijnal Officer ADDITIONALCOPIES OF THIS PUBLICATION MAY BE PROCURED FROM THE•SUPERINTENDENT OF DOCUMENTS GOVERNMENT PRINTING OFFICE "WASHINGTON,D. C. AT 20 CENTS PER COPY V War Department, Office of the Chief of Staff. > Washington, April15, 1916. The followingSignal Book, prepared by the Chief Signal Officer of the Army,is approved and herewith issued for the information and government of the Regular Army and the Organized Militia of the United States. It supersedes Signal Book, United States Army, 1914, and its provisions willbe strictly observed throughout the service. order of the Secretary of War: H.L. Scott, Major General, Chief ofStaff. 3 CONTENTS. Page. Part I. General Instructions for Army Signaling 7 11. The American Morse Code 9 111. The International Morse or General Service Code. \u25a0 12 IV. Visual Signaling ingeneral 15 V. Visual Signaling by Flag, Torch, Hand Lan tern, or Beam of Searchlight (without shut ter) 17 VI. Signaling with Heliograph, Flash Lantern, or Searchlight (with shutter) 18 VII.The Ardois System 19 VIII.Signaling by Two-ArmSemaphore . 21 Stationary Semaphore 21 Hand Flags withTwo-ArmSemaphore Code. 21 IX.Letter Codes: Infantry .' 23 Cavalry. 24 Field Artillery ..... 24 Coast Artillery , 26 X. Conventional and Preconcerted Signals with Rockets, Bombs, Small Arms, Guns, Coston Lights, Very Pistols, etc 2828 XI.Flag Signals by Permanent Hoist. 31 XII.Conventional Telephone Signals 33 XIII.Emergency Signals '.. 34 XIV.Additional and Improvised Codes. 38 XV. -
Morse Code [10Pt] History
Morse code History 2013-June-11 Code pre-Morse Polybius, Greek historian from 150 BC, sent messages with torches, with numbers standing for letters. 1 2 3 4 5 1 ABCDE 2 F G H I,J K 3 LMNOP 4 QRSTU 5 VWXYZ that tied together to make national networks. Invention of telegraph In the Napoleanic wars both the French and the British set up towers Invention of telegraph In the Napoleanic wars both the French and the British set up towers that tied together to make national networks. Heartbroken to know that for days he was unaware of his wife's failing health and her lonely death he first began to think about how to do rapid long distance communication. The code as part of the telegraph: Morse Samuel Morse was a well-known painter. S F B Morse 1791-1872 In 1825 he was asked to paint the Marquis de Lafayette in Washington DC. Mid-way through he got a note that his wife was ill. He hurried home to CT, but was too late. The code as part of the telegraph: Morse Samuel Morse was a well-known painter. S F B Morse 1791-1872 In 1825 he was asked to paint the Marquis de Lafayette in Washington DC. Mid-way through he got a note that his wife was ill. He hurried home to CT, but was too late. Heartbroken to know that for days he was unaware of his wife's failing health and her lonely death he first began to think about how to do rapid long distance communication. -
Morse Code and the Information Age Morse Code, Invented by Samuel F. B. Morse in the 1830S, Is a Method of Transmitting Textual
Morse Code and the Information Age Morse code, invented by Samuel F. B. Morse in the 1830s, is a method of transmitting textual 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 International Morse Code encodes the Roman alphabet, the Arabic numerals and a small set of punctuation and procedural signals. The original telegraph system had an apparatus on the receiving end that spat out a string of paper with indentations on it. Short indentations were called “dots” or “dits,” and the longer ones “dashes” or “dahs.” Because many non-English natural languages use more than the 26 Roman letters, extensions to the Morse alphabet exist for those languages. Morse code has been in use for more than 160 years—longer than any other electrical coding system. What is called Morse code today is actually somewhat different from what was originally developed. The Modern International Morse code, or continental code, was created by Friedrich Clemens Gerke in 1848 and initially used for telegraphy between Hamburg and Cuxhaven in Germany. Gerke changed nearly half of the alphabet and all of the numerals resulting substantially in the modern form of the code. After some minor changes, International Morse Code was standardized at the International Telegraphy Congress in 1865 in Paris, and was later made the standard by the International Telecommunication Union (ITU). Samuel Morse's original code specification, largely limited to use in the United States and Canada, became known as American Morse code or railroad code. -
Researchers Take a Closer Look at the Meaning of Emojis. Like 30
City or Zip Marlynn Wei M.D., J.D. Home Find a Therapist Topics Get Help Magazine Tests Experts Urban Survival Researchers take a closer look at the meaning of emojis. Like 30 Posted Oct 26, 2017 SHARE TWEET EMAIL MORE TO GO WITH AFP STORY BY TUPAC POINTU A picture shows emoji characters also known a… AFP | MIGUEL MEDINA A new database introduced in a recent research paper (https://www.ncbi.nlm.nih.gov/pubmed/28736776)connects online dictionaries of emojis with a semantic network to create the first machine-readable emoji inventory EmojiNet (http://emojinet.knoesis.org). (http://emojinet.knoesis.org) In April 2015, Instagram reported that 40 percent of all messages contained an emoji. New emojis are constantly being added. With the rapid expansion and surge of emoji use, how do we know what emojis mean when we send them? And how do we ensure that the person at the other end knows what we mean? It turns out that the meaning of emojis varies a whole lot based on context. Emojis, derived from Japanese “e” for picture and “moji” for character, were first introduced in the late 1990s but did not become Unicode standard until 2009. Emojis are pictures depicting faces, food, sports (https://www.psychologytoday.com/basics/sport-and- competition), animals, and more, such as unicorns, sunrises, or pizza. Apple introduced an emoji keyboard to iOS in 2011 and Android put them on mobile platforms in 2013. Emojis are different from emoticons, which can be constructed from your basic keyboard, like (-:. The digital use of emoticons has been traced back to as early as 1982, though there are earlier reported cases in Morse code telegraphs.