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Amateur radio

Amateur radio
An example of an amateur radio station with four transceivers, amplifiers, and a computer for logging and for digital modes. On the wall are examples of various awards, certificates, and a reception report card (QSL card) from a foreign amateur station. Amateur radio (also called ham radio) is the use of designated radio frequency spectra for purposes of private recreation, non-commercial exchange of messages, wireless experimentation, self-training, and emergency communication. The term "amateur" is used to specify persons interested in radio technique solely with a personal aim and without direct monetary or other similar reward, and to differentiate it from commercial broadcasting, public safety (such as police and fire), or professional two-way radio services (such as maritime, aviation, taxis, etc.). History[edit] An amateur radio station in the United Kingdom. Ham radio[edit] Activities and practices[edit] Licensing[edit] The top of a tower supporting a yagi and several wire antennas Related:  rod57

United States Military Telegraph - Morse Code Files The USMT CW Communicator Ionosphere server! Use our server address of "" in your CW Communicator program! Practice CW, DOT or any version of MorseCode you choose. CW Comm is an excellent "live" or "real time" internet morse code program made by MRX Software. To help promote all versions of morse code, we've provided some links on the right-hand side of the page that may be useful. Below are some reviews of the programs above. CWirc, by Pierre-Philippe Coupard, is a plugin for the X-Chat IRC client to transmit raw morse code over the internet using IRC servers as reflectors. A brief note about CWirc; CWirc is quite flexible. Ham Univesity is another great tool for learning and practicing morse code. MorseAcademy is a good tool for learning and practicing morse code. MorseMail is a simple program which will allow you to send recordings or "numerical" representations of morse code through the clicks of your mouse via email. MRX Morse Code is also made by MRX Software. Return

How to Remove Trovi / Conduit / Search Protect Browser Hijack Malware If your computer has been hijacked with an obnoxious malware that won’t let you change your home page, there’s a strong chance you’ve been infected with the Trovi Search Protect malware, which used to be known as Conduit. Here’s how to remove it. How do you know this is malware? How Did You Get Infected? Usually at some point you made the huge mistake of trusting a site like, which bundled it into an installer for a completely different application. They get around the legality issue with their long terms of service that nobody reads and by making sure there’s actually a way to uninstall the thing. Removing the Trovi Search Protect Malware This is really sad to say, but it’s actually important to use the Search Protect panel to turn off the bad settings first before uninstalling it. In here, change your Home Page back to Google or whatever you want. Now change your New Tab page back to Browser Default. Change your Default Search back to “Browser default search engine.”

Robotics Robotics is the branch of mechanical engineering, electrical engineering and computer science that deals with the design, construction, operation, and application of robots,[1] as well as computer systems for their control, sensory feedback, and information processing. These technologies deal with automated machines that can take the place of humans in dangerous environments or manufacturing processes, or resemble humans in appearance, behavior, and/or cognition. Many of today's robots are inspired by nature contributing to the field of bio-inspired robotics. The concept of creating machines that can operate autonomously dates back to classical times, but research into the functionality and potential uses of robots did not grow substantially until the 20th century.[2] Throughout history, robotics has been often seen to mimic human behavior, and often manage tasks in a similar fashion. Etymology[edit] History of robotics[edit] Robotic aspects[edit] Components[edit] Power source[edit]

Simple Authentication and Security Layer Simple Authentication and Security Layer (SASL) is a framework for authentication and data security in Internet protocols. It decouples authentication mechanisms from application protocols, in theory allowing any authentication mechanism supported by SASL to be used in any application protocol that uses SASL. Authentication mechanisms can also support proxy authorization, a facility allowing one user to assume the identity of another. They can also provide a data security layer offering data integrity and data confidentiality services. DIGEST-MD5 provides an example of mechanisms which can provide a data-security layer. SASL is an IETF Standard Track protocol and is, as of 2010[update], a Proposed Standard. SASL mechanisms[edit] A SASL mechanism implements a series of challenges and responses. The GS2 family of mechanisms supports arbitrary GSS-API mechanisms in SASL.[5] It is now standardized as RFC 5801. SASL-aware application protocols[edit] See also[edit] Transport Layer Security (TLS)

Katy Amateur Radio Society Code Practice Files Text Source for W1AW Web Code Practice Files for April 15 and 16, 2014: Text for the 5 to 15 WPM runs comes from December 2012 QST, page 59. Text for the 20 to 40 WPM runs comes from September 2013 QST, page 49. The various archive files are available from the following links. The 18 WPM is a "transition" file to help bridge the gap from 15 to 20 WPM. This particular file is actually part of the W1AW CW bulletin from previous weeks. The 40 WPM file is composed of texts taken from the lower speed files. The various TEXT files contain the actual code practice text used in each run. Please note the tone frequency is 750 Hz. Joe Carcia, NJ1Q -

Welcome to Ford Owner | Official Ford Owner Site Programmer British countess and mathematician Ada Lovelace is considered the first computer programmer, as she was the first to write and publish an algorithm intended for implementation on Charles Babbage's analytical engine, in October 1842, intended for the calculation of Bernoulli numbers.[8] Lovelace was also the first person to comment on the potential for computers to be used for purposes other than computing calculations. Because Babbage's machine was never completed to a functioning standard in her time, she never saw her algorithm run. The first person to run a program on a functioning modern electronically based computer was computer scientist Konrad Zuse, in 1941. The ENIAC programming team, consisting of Kay McNulty, Betty Jennings, Betty Snyder, Marlyn Wescoff, Fran Bilas and Ruth Lichterman were the first regularly working programmers.[9][10] Nature of the work[edit] Programmers in the Yandex headquarters. Testing and debugging[edit] Application versus system programming[edit]

ScreenPlay The MediaWiki ScreenPlay Extension (ScreenPlay) is a text-formatting add-on which allows screenwriters and hobbyists the ability to use MediaWiki as a screenwriting tool. Synopsis[edit | edit source] <screenplay>An example is described</screenplay><scene int day>A '''Darkened''' Room</scene> [[Bob Ross|BOB]] sits in front of a computer screen. ;bob :Hello friends, I'm so glad you could join us. Will produce the following type of formatting: Note how word case has been adjusted in certain cases. Description[edit | edit source] ScreenPlay supports three new editing hooks to add style codes that visually re-format certain wiki syntax (specifically, those used for definition lists, or "dl's") into proper screenplay format. Though ScreenPlay is not a replacement for a full-featured ScreenWriting software package, it offers a number of advantages for screenwriters: Usage[edit | edit source] Installing ScreenPlay is as easy as installing any other MediaWiki extension. Hooks[edit | edit source]

Kenwood TS-140S Transceiver - (5.0/5) Add a review / View all reviews Desktop Shortwave Transceiver The Kenwood TS-140S is a high performance HF transceiver designed for SSB, CW, AM and FM modes of operation on all amateur bands (160-10 Meters). This compact, lightweight unit features an outstanding 500 kHz to 30 MHz general coverage receiver with superior dynamic range. The dual 10 Hz step digital VFOs operate independently of each other. 31 Memory channels can store frequency, mode and narrow-wide information at CW mode. 10 Memory channels (CH10 to CH19) store transmit and received frequencies independently allowing repeater or split frequency operation. 11 Memory channels (CH20 to CH30) establish the upper lower limits for band scanning. The Kenwood TS-680S is similar to the TS-140S, but adds coverage of the 6 meter amateur band. Type Desktop Amateur HF Transceiver Frequency range RX 0.05-35 MHz 10-160 m + WARC Frequency stability Tuning steps Filters Modulations Sensitivity Selectivity Receiver system IF-frequencies RF-output

Alphabet morse Un article de Wikipédia, l'encyclopédie libre. Code morse international. L’alphabet morse ou code morse, est un code permettant de transmettre un texte à l’aide de séries d’impulsions courtes et longues, qu’elles soient produites par des signes, une lumière ou un geste. Ce code est souvent attribué à Samuel Morse, cependant plusieurs personnes démentent ce fait, et tendent à attribuer la paternité du langage à son assistant, Alfred Vail[1],[2]. Parallèlement au code morse[3], des abréviations commerciales plus élaborées ont été créées codant des phrases complètes en un seul mot (groupe de 5 lettres). Les opérateurs de télégraphie conversaient alors en utilisant des mots tels que BYOXO (Are you trying to crawl out of it?) Station radiotélégraphique type Marconi Depuis le début du XXe siècle et l’invention de la lampe Aldis, les bateaux peuvent également communiquer en morse lumineux. Le Règlement des radiocommunications (RR) se compose de règles liées au service de radio amateur.

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