Q-Codes in Radio Communication
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JOTA Activity Booklet KE4TIO
1 2 3 Gulf Ridge Council Pack 415 KE4TIO Alan Wentzell (Operator) Amateur Call Signs Heard and Worked: __________________________________ __________________________________ __________________________________ __________________________________ __________________________________ __________________________________ __________________________________ __________________________________ States Contacted: __________________________________ __________________________________ __________________________________ __________________________________ __________________________________ __________________________________ __________________________________ __________________________________ Countries Contacted: __________________________________ __________________________________ __________________________________ __________________________________ Scouts Present: __________________________________ __________________________________ __________________________________ __________________________________ __________________________________ Akela’s Present: __________________________________ __________________________________ __________________________________ __________________________________ __________________________________ 4 Q Codes The “Q” code was originally developed as a way of sending shorthand messages in Morse Code. However, it is still used by operators for voice communications. Some of those in common use are listed below: QRA What is your call sign? QRM I have interference (manmade). QRN I am receiving static (atmospheric noise). QRT I am closing -
1 めざせ 1 級! 英語上級者への道 ~Listen and Speak Ⅱ~ 第 7 回
めざせ 1 級! 英語上級者への道 ~Listen and Speak Ⅱ~ 第 7 回 モールス信号 Script ■Dialogue for Introduction E: Hello, Tets. Thanks for posting so many photos of your wonderful journey to Europe on Facebook. I felt as if I were traveling with you on the continent. T: Yes, with social networks we now have almost instant communication. That’s a far cry from the days of snail mail. E: Indeed it is. But you know, Tets, there were some important interim communication technologies along the way. For example, do you know the origin of the acronym “SOS”? T: Ah! Dot dot dot /dash dash dash/ dot dot dot! That is one of the most famous acronyms represented by the telegraph code system developed by Samuel Morse in 1836. That system was also implemented later in radio broadcasting. “Save Oh Save” or perhaps “Save Our Souls”…there is some debate as to the original meaning! There was, however, Edward, an earlier version of this call for distress! Did you know that, my friend? E: Indeed I do! The original code was CQD! It may have meant “Come quickly: Distress!” But the dots and dashes used to indicate it were too long and… T: Stop! We will have to send a real distress call if we spill the beans about our lesson too soon! Let’s give our listeners a chance to experience this article for themselves. E: A fine idea! Let’s signal the start of this month’s study! T&E: Pip-pip-pip…pip-pip. ■Listen to the passage and answer the questions that follow. -
Safety and Alarming Applications Using ISA100 Wireless
Safety and alarming applications using ISA100 Wireless Yokogawa Electric Corporation Toshi Hasegawa 1 March 2016 Presenter Toshi Hasegawa is a Manager of standard department, Marketing Head quarters. Toshi has been working for Yokogawa Electric Corporation for 27 years, and he has worked for development of Distributed Control Systems (DCS). His current activity is mainly on standardization and marketing of industrial wireless network. 2 The History of Radio • Marconi had an early interest in science, and was especially interested in the work of Hertz • He quickly realized the potential of wireless transmission and filed a British patent – Awarded on 2nd July 1897, GB12039 • At 12:00pm on the 12th December 1901 Marconi sent and received the first Transatlantic radio transmission 3 The History of Radio • On Sunday evening 14th April 1912 the largest passenger ship in the world, Titanic struck an iceberg • The radio operators onboard were employed by Marconi International Marine • They sent a distress signal alerting the world and the Carpathia "CQD CQD SOS Titanic Position 41.44 N 50.24 W.·······” • Radio had proven it worth… Wireless safety application has been started over 100 years ago.. 4 Today’s topics 1) Motivation of wireless for plant safety 2) Benefits 3) Key requirements 4) ISA100 Wireless solutions 5) Applications 6) Summary 5 Motivation of adopting wireless for safety • Preventive measures – Process condition / status monitoring: Temperatures / Pressures / Flows / Levels / etc. – Asset condition monitoring: Vibration / Corrosion / Temperature / etc. • Accident avoidance / Limit the extent of damages – Alarm / Warning: Gas leak detection / Safety shower detection /Tsunami detection – Emergency shutdown: Remote valve control for safety mode • Human safety – People tracking on site / Communication to navigate for evacuation / etc. -
Titanic Lessons.Indd
Lee AWA Review Titanic - Lessons for Emergency Communica- tions 2012 Bartholomew Lee Author She went to a freezing North Atlantic grave a hundred years ago, April 15, 1912, hav- By Bartholomew ing slit her hull open on an iceberg she couldn’t Lee, K6VK, Fellow avoid. Her story resonates across time: loss of of the California life, criminal arrogance, heroic wireless opera- Historical Radio tors, and her band playing on a sinking deck, Society, copyright serenading the survivors, the dying and the dead 2012 (no claim to as they themselves faced their own cold wet images) but any demise. The S.S. Titanic is the ship of legend.1 reasonable use The dedication to duty of the Marconi wire- may be made of less operators, Jack Phillips and Harold Bride, this note, respect- is both documented and itself legendary.2 Phil- ing its authorship lips stuck to his key even after Captain Edward and integrity, in Smith relieved him and Bride of duty as the ship furtherance of bet- sank. Phillips’ SOS and CQD signals brought the ter emergency com- rescue ships, in particular the S.S. Carpathia. munications. Phillips died of exposure in a lifeboat; Bride Plese see the survived.3 author description This note will present some of the Marconi at the end of the wireless messages of April 14. Any kind of work article, Wireless -- under stress is challenging. In particular stress its Evolution from degrades communications, even when effective Mysterious Won- communications can mean life or death. Art der to Weapon of Botterel4 once summed it up: “Stress makes you War, 1902 to 1905, stupid.” The only protection is training. -
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. -
“R.M.S. Titanic” Hanson W
“R.M.S. Titanic” Hanson W. Baldwin I The White Star liner Titanic, largest ship the world had ever known, sailed from Southampton on her maiden voyage to New York on April 10, 1912. The paint on her strakes was fair and bright; she was fresh from Harland and Wolff’s Belfast yards, strong in the strength of her forty-six thousand tons of steel, bent, hammered, shaped, and riveted through the three years of her slow birth. There was little fuss and fanfare at her sailing; her sister ship, the Olympic—slightly smaller than the Titanic— had been in service for some months and to her had gone the thunder of the cheers. But the Titanic needed no whistling steamers or shouting crowds to call attention to her superlative qualities. Her bulk dwarfed the ships near her as longshoremen singled up her mooring lines and cast off the turns of heavy rope from the dock bollards. She was not only the largest ship afloat, but was believed to be the safest. Carlisle, her builder, had given her double bottoms and had divided her hull into sixteen watertight compartments, which made her, men thought, unsinkable. She had been built to be and had been described as a gigantic lifeboat. Her designers’ dreams of a triple-screw giant, a luxurious, floating hotel, which could speed to New York at twenty-three knots, had been carefully translated from blueprints and mold loft lines at the Belfast yards into a living reality. The Titanic’s sailing from Southampton, though quiet, was not wholly uneventful. -
W3PGA Pearl Harbor Special Event
Fall is here! The Aero Aerial The Newsletter of the Aero Amateur Radio Club Middle River, MD Volume 14, Issue 10 October 2018 Editor Georgeann Vleck KB3PGN Officers Committees President Joe Miko WB3FMT Repeater Phil Hock W3VRD Jerry Cimildora N3VBJ Vice-President Jerry Cimildora N3VBJ VE Testing Pat Stone AC3F Recording Lou Kordek AB3QK Public Bob Landis WA3SWA Secretary Service Corresponding Pat Stone AC3F Webmaster, Jerry Cimildora N3VBJ Secretary Facebook Treasurer Warren Hartman W3JDF Trustee Dave Fredrick KB3KRV Resource Ron Distler W3JEH Club Nets Joe Miko WB3FMT Coordinator Contests Bob Venanzi ND3D Charles Whittaker KB3EK Website: http://w3pga.org Facebook: https://www.facebook.com/pages/Aero-Amateur-Radio-Club/719248141439348 About the Aero Amateur Radio Club Meetings The Aero Amateur Radio Club meets at 7:30 pm on the first and third Wednesdays of the month at Essex SkyPark, 1401 Diffendall Road, Essex. Meetings begin at 7:30 p.m. local time. Meetings are canceled if Baltimore County Public Schools are closed or dismiss early. Repeaters W3PGA 2 M : INPUT : 147.84 MHz, OUTPUT : 147.24 MHz, PL 123.0 W3PGA 70 Cm: INPUT : 444.575 MHz, OUTPUT : 449.575 MHz, PL123.0 W3JEH 1.25 M: INPUT : 222.24 MHz, OUTPUT : 223.84 MHz Club Nets Second Wednesday Net – 10 Meters (28.445 MHz) @ 8 p.m. Local Time Fourth Wednesday Net – 2 Meters (147.24 MHz Repeater) @ 8 p.m. Local Time Fifth Wednesday Net – 70 Centimeters (449.575 MHz Repeater) @ 8 p.m. Local Time Radio License Exams The Aero Amateur Radio Club sponsors Amateur Radio License Exams with the ARRL VEC. -
Do We Still Use Morse Code? Code Original Morse's Samuel (ITU)
Introduction 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 may be read several miles away for a lost sailor or hunter. or sailor lost a for away miles several read be may listener or observer without special equipment. The International catastrophe. of times in especially survive, to you allow might code headings even today. Flashing light Morse code even from a flashlight flashlight a from even code Morse light Flashing today. even headings Morse Code encodes the Roman alphabet, the Arabic numerals knowing time, mean the In future. the in technology simple this Navigation beacons help airline pilots find and maintain proper proper maintain and find pilots airline help beacons Navigation and a small set of punctuation and procedural signals. The original use to ways of conceive will minds brilliant how knows Who telegraph system had an apparatus on the receiving end that spat emergency signals. emergency out a string of paper with indentations on it. Short indentations keyboard. the at looking without it do can and operator and versatile methods for telecommunication and is often used for for used often is and telecommunication for methods versatile and were called “dots” or “dits,” and the longer ones “dashes” or “dahs.” keyboard QUERTY a than faster much text the enter for sending automated digital data. Morse is also one of the simplest simplest the of one also is Morse data. digital automated sending for Because many non-English natural languages use more than the can operators code Morse Experienced face. -
Marconi and Radio Nav Talk V9b.Pptx
@MarconiSociety #GPSTalk From Marconi to GPS A short (expurgated)* History of Radio Navigation (with a few Capricious excursions by the Speaker) With much credit to Internet research, especially Wikipedia Bradford Parkinson Stanford University * Focus on US systems – there is a huge body of history for foreign systems – German, British, Russian, French, etc. Parkinson 2016 SCPNT/Marconi History of 11/8/16 1 Radio Navigaon Outline • RF Pioneers – Maxwell and Marconi • Definitions • Jimmy Doolittle's demonstration • Early Systems • First Worldwide System (s) • Second Worldwide System • Third Worldwide System • A Few Observations Parkinson 2016 SCPNT/Marconi History of 11/8/16 2 Radio Navigaon Theoretical Basis: James Maxwell (1831-1879) • Discovered the equations that govern the propagation of electromagnetic waves through space. • This theory explained the first Transatlantic Radio Transmission by Guglielmo Marconi (Probably not well understood at the time!) 1868 Version (Integral Form) Parkinson 2016 SCPNT/Marconi History of 11/8/16 3 Radio Navigaon Italian inventor and engineer Guglielmo Marconi (1874-1937) Statue in Washington DC at Lamont and 16th Street (Courtesy Google Street View!!!) • Experimentalist in wireless telegraphy (1st patent in England 1896) • Developed the first effective system of radio communication • First transatlantic wireless transmission (12 Dec. 1901) • Unknown to Marconi, the Ionosphere played an essential role in long range transmissions • His invention Initially deployed in Ships › Instrumental in catching a fleeing murderer on trans-Atlantic voyage in 1910 (“Thunderstruck”) › Enabler for rapid rescue of Titanic Victims (14 April 1912) • Proposed Other uses of Radio Waves Parkinson 2016 SCPNT/Marconi History of 11/8/16 Marconi: The Man Who Networked the World Jul 27, 2016 by Marc Raboy 4 Radio Navigaon Nobel Prize for Physics 1909 Awarded to Gugliermo Marconi and Ferdinand Braun Braun • Braun invented CRT. -
FM 24-18. Tactical Single-Channel Radio Communications
FM 24-18 TABLE OF CONTENTS RDL Document Homepage Information HEADQUARTERS DEPARTMENT OF THE ARMY WASHINGTON, D.C. 30 SEPTEMBER 1987 FM 24-18 TACTICAL SINGLE- CHANNEL RADIO COMMUNICATIONS TECHNIQUES TABLE OF CONTENTS I. PREFACE II. CHAPTER 1 INTRODUCTION TO SINGLE-CHANNEL RADIO COMMUNICATIONS III. CHAPTER 2 RADIO PRINCIPLES Section I. Theory and Propagation Section II. Types of Modulation and Methods of Transmission IV. CHAPTER 3 ANTENNAS http://www.adtdl.army.mil/cgi-bin/atdl.dll/fm/24-18/fm24-18.htm (1 of 3) [1/11/2002 1:54:49 PM] FM 24-18 TABLE OF CONTENTS Section I. Requirement and Function Section II. Characteristics Section III. Types of Antennas Section IV. Field Repair and Expedients V. CHAPTER 4 PRACTICAL CONSIDERATIONS IN OPERATING SINGLE-CHANNEL RADIOS Section I. Siting Considerations Section II. Transmitter Characteristics and Operator's Skills Section III. Transmission Paths Section IV. Receiver Characteristics and Operator's Skills VI. CHAPTER 5 RADIO OPERATING TECHNIQUES Section I. General Operating Instructions and SOI Section II. Radiotelegraph Procedures Section III. Radiotelephone and Radio Teletypewriter Procedures VII. CHAPTER 6 ELECTRONIC WARFARE VIII. CHAPTER 7 RADIO OPERATIONS UNDER UNUSUAL CONDITIONS Section I. Operations in Arcticlike Areas Section II. Operations in Jungle Areas Section III. Operations in Desert Areas Section IV. Operations in Mountainous Areas Section V. Operations in Special Environments IX. CHAPTER 8 SPECIAL OPERATIONS AND INTEROPERABILITY TECHNIQUES Section I. Retransmission and Remote Control Operations Section II. Secure Operations Section III. Equipment Compatibility and Netting Procedures X. APPENDIX A POWER SOURCES http://www.adtdl.army.mil/cgi-bin/atdl.dll/fm/24-18/fm24-18.htm (2 of 3) [1/11/2002 1:54:49 PM] FM 24-18 TABLE OF CONTENTS XI. -
Morse Code - Wikipedia, the Free Encyclopedia File:///H:/Optical/Morse Code.Htm
Morse Code - Wikipedia, the free encyclopedia file:///H:/optical/Morse_Code.htm Morse Code From Wikipedia, the free encyclopedia. Morse Code is a method for transmitting information, using standardized sequences of short and long marks or pulses -- commonly known as "dots and dashes" -- for the letters, numerals and special characters of a message. Originally created for Samuel Morse's electric telegraph in the mid-1830s, it was also extensively used for early radio communication beginning in the 1890s. However, with the development of more advanced communications technologies, the use of Morse Code is now largely obsolete, although it is still employed for a few specialized purposes, including navigational radio beacons, and by CW (continuous wave) amateur radio operators. Morse Code can be transmitted in a number of ways: originally as electrical pulses along a telegraph wire, but also as an audio tone, as a radio signal with short and long pulses or tones, or as a mechanical or visual signal (e.g. a flashing light). Because Morse Code is transmitted using just two states -- on and off -- it was an early form of a digital code. International Morse Code is composed of six elements: 1. short mark or dot (·) 2. longer mark or dash (-) 3. intra-character gap (between the dots and dashes in a character) 4. short gap (between letters) 5. medium gap (between words) 6. long gap (between sentences) However, the variable length of the Morse characters made it hard to adapt to automated communication, so it was largely replaced by more standardized formats, including the Baudot code and ASCII. -
It's a CQD Old Man 41.46 North, 50.14 West
Page 1 of 34 It’s A CQD Old Man 41.46 North, 50.14 West By Samuel W. Halpern Note to the reader: This paper is a revised work of my original two-part article, “A Minute of Time,” first published in 2005 in the Titanic Historical Society’s Titanic Commutator.1 The article deals with the issue of the two CQD distress positions transmitted from Titanic by wireless on the night of the disaster. Items written in quotations between brackets […] are insertions by this author. In the footnotes of this article, the notation AI are references to page numbers in the transcripts of the American Inquiry into the loss of Titanic, while the notation BI are references to question numbers in the transcripts of the British Inquiry into the loss of Titanic. - SWH FOREWORD The author of this article has deftly drawn together the existing data and testimony to elegantly tie up the loose ends in this century old mystery of why the two CQD positions were so far west of the wreck site. As is still the case today, maritime disasters large and small are usually the result of a series of small missteps and oversights. In so thoroughly examining this portion of the Titanic story the author has outlined an entirely plausible error chain. That a misreading of the navigation watch and an easily made error in addition could contribute so much to the drama of April 14, 1912 is an important reminder to mariners today. Captain Peg Brandon Assistant Professor of Marine Transportation Maine Maritime Academy Castine, ME 04220, USA INTRODUCTION On the night of April 14, 1912 at 10:35 p.m., New York time, Carpathia’s wireless operator Harold Cottam decided to pick up his headphones to call up Titanic’s senior wireless operator Jack Phillips to tell him that there were messages waiting for him to pick up from Cape Cod.