Lies, Spies, and Secrets Hidden History of Cincinnati Radio
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A Brief History of Radio Broadcasting in Africa
A Brief History of Radio Broadcasting in Africa Radio is by far the dominant and most important mass medium in Africa. Its flexibility, low cost, and oral character meet Africa's situation very well. Yet radio is less developed in Africa than it is anywhere else. There are relatively few radio stations in each of Africa's 53 nations and fewer radio sets per head of population than anywhere else in the world. Radio remains the top medium in terms of the number of people that it reaches. Even though television has shown considerable growth (especially in the 1990s) and despite a widespread liberalization of the press over the same period, radio still outstrips both television and the press in reaching most people on the continent. The main exceptions to this ate in the far south, in South Africa, where television and the press are both very strong, and in the Arab north, where television is now the dominant medium. South of the Sahara and north of the Limpopo River, radio remains dominant at the start of the 21St century. The internet is developing fast, mainly in urban areas, but its growth is slowed considerably by the very low level of development of telephone systems. There is much variation between African countries in access to and use of radio. The weekly reach of radio ranges from about 50 percent of adults in the poorer countries to virtually everyone in the more developed ones. But even in some poor countries the reach of radio can be very high. In Tanzania, for example, nearly nine out of ten adults listen to radio in an average week. -
A Proposed System for Covert Communication to Distant And
A Proposed System for Covert Communication to Distant and Broad Geographical Areas Joshua Davis [email protected] Abstract—A covert communication system is developed that can emulate a human user, when provided information about modulates Morse code characteristics and that delivers its mes- a user’s Morse code statistical behavior. Numbers stations sage economically and to geographically remote areas using radio utilize simplex (one-way) communication, one-time pads, and and EchoLink. Our system allows a covert message to be sent to a receiving individual by hiding it in an existing carrier long range radio to ensure that both the receiver and message Morse code message. The carrier need not be sent directly to are anonymous. Our system may be utilized in this fashion, the receiving person, though the receiver must have access to the providing a level of security equal to numbers stations if this signal. Illustratively, we propose that our system may be used as is the desired configuration. Further, our system obfuscates an alternative means of implementing numbers stations. to some degree the existence of the covert communication; something that numbers stations are not known to do. I. INTRODUCTION A. Morse Code A potential use for the system we will soon derive is a se- Morse code is a simple and durable means of transmitting cure and economical alternative to numbers stations. Numbers symbols (e.g. letters, numbers). It is widely used by amateur stations can be found throughout the high frequency (HF) radio radio operators on HF bands to communicate with one another band, as the propagation characteristics of this band allows over long distances. -
Analogue & Digital Radio Worldwide
Analogue & Digital Radio Worldwide MASS COMMUNICATION VIA SHORTWAVE HAS UNIQUE ADVANTAGES EVEN IN THE INTERNET AGE Global radio transmission via shortwave How it works Advantages of Shortwave Radio Simple, non-discriminatory reception Shortwave radio is radio transmission › Analogue or digital radio with of information on portable end user using shortwave radio frequencies, gen- one transmitter around the globe devices, independently from network erally 3.9–26.1 MHz (75–11 meter-band), › Audio transmission and data- providers and technical infrastructure: just above the medium-wave AM broad- transfer are possible These are the unique features which cast band. Shortwaves are directed at continue to make shortwave an impor- an angle into the sky can › Flexible transmission booking tant form of mass media. Therefore be reflected back to earth at great (daily, weekly, monthly or on- shortwave is an important platform for distances, beyond the horizon. Short- demand) public and commercial radio broad- wave radio is usually used for broad- › Reach thousands of people with casters as well as political and religious casting voice and music to shortwave one transmitter organisations to distribute their pro- listeners over entire continents or even grammes. larger areas. › Signals are hardly to disturb compared to Internet or satellite IONOSPHERE › Easy to receive with low-cost receivers SKYWAVE TRANSMITTER RECEIVER Shortwave stations of our partner service providers around the globe From Germany to the whole world › For providers of radio programmes intended for reception around the globe, Media Broadcast offers comprehensive consulting services and customised solutions for broadcasting signals via shortwave. We offer all required services- from one source, from IT-supported calculation of the desired transmission parameters and coordination of the suitable frequencies to technical broadcasting of the signals via our shortwave station in Nauen near Berlin. -
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internet resources John H. Barnett Global voices, global visions International radio and television broadcasts via the Web he world is calling—are you listening? used international broadcasting as a method of THere’s how . Internet radio and tele communicating news and competing ideologies vision—tuning into information, feature, during the Cold War. and cultural programs broadcast via the In more recent times, a number of reli Web—piqued the interest of some educators, gious broadcasters have appeared on short librarians, and instructional technologists in wave radio to communicate and evangelize the 1990s. A decade ago we were still in the to an international audience. Many of these early days of multimedia content on the Web. media outlets now share their programming Then, concerns expressed in the professional and their messages free through the Internet, literature centered on issues of licensing, as well as through shortwave radio, cable copyright, and workable business models.1 television, and podcasts. In my experiences as a reference librar This article will help you find your way ian and modern languages selector trying to to some of the key sources for freely avail make Internet radio available to faculty and able international Internet radio and TV students, there were also information tech programming, focusing primarily on major nology concerns over bandwidth usage and broadcasters from outside the United States, audio quality during that era. which provide regular transmissions in What a difference a decade makes. Now English. Nonetheless, one of the benefi ts of with the rise of podcasting, interest in Web tuning into Internet radio and TV is to gain radio and TV programming has recently seen access to news and knowledge of perspec resurgence. -
Digitalization of Radio Through DRM Standard on Mediumwave And
ISSN: 2277-3754 ISO 9001:2008 Certified International Journal of Engineering and Innovative Technology (IJEIT) Volume 3, Issue 9, March 2014 Digitalization of Radio through DRM Standard on Mediumwave and Shortwave Branimir Jaksic, Mile Petrovic, Petar Spalevic, Ratko Ivkovic, Sinisa Minic University of Prishtina, Faculty of Technical Sciences, Kosovska Mitrovica, Serbia University of Prishtina, Teachers College, Leposavic, Serbia areas where analog technology AM (amplitude modulation) Abstract— this paper work offers an overview of DRM was used. It is planned that AM should be replaced with standards used in digitization of radio on medium and short waves digital technology which is similar to technologies DAB and in the world. Firstly, it provides the raw characteristics of DRM DVB-T (all of these listed technologies use OFDM technology and its working principle, with a special focus on audio coding. After that, the state of DRM transmissions in modulation) [3]. The primary purpose of DRM technology is February 2014 is given. Also it gives an summary of radio stations for transfer of the audio content. With this basic purpose, which broadcast the program using DRM technology (country DRM also supports the transfer of some multimedia content and language transmission). Broadcasting areas of radio stations with lower transmission capacity: are also provided, as well as the number of active DRM - DRM text messages; frequencies by regions of the world, for each radio station - EPG (Electronic Program Guide); separately. Then, a map of DRM transmitters in the world is - Information text services (Journaline text based shown, with their main characteristics. information service); - Transmission frames (Slideshow); Index Terms—DRM, frequencie, radio channel, transmitters. -
Cryptography
Cryptography From Wikipedia, the free encyclopedia Jump to: navigation, search "Secret code" redirects here. For the Aya Kamiki album, see Secret Code. German Lorenz cipher machine, used in World War II to encrypt very-high-level general staff messages Cryptography (or cryptology; from Greek κρυπτός, kryptos, "hidden, secret"; and γράφ, gráph, "writing", or -λογία, -logia, respectively)[1] is the practice and study of hiding information. Modern cryptography intersects the disciplines of mathematics, computer science, and engineering. Applications of cryptography include ATM cards, computer passwords, and electronic commerce. Cryptology prior to the modern age was almost synonymous with encryption, the conversion of information from a readable state to nonsense. The sender retained the ability to decrypt the information and therefore avoid unwanted persons being able to read it. Since WWI and the advent of the computer, the methods used to carry out cryptology have become increasingly complex and its application more widespread. Alongside the advancement in cryptology-related technology, the practice has raised a number of legal issues, some of which remain unresolved. Contents [hide] • 1 Terminology • 2 History of cryptography and cryptanalysis o 2.1 Classic cryptography o 2.2 The computer era • 3 Modern cryptography o 3.1 Symmetric-key cryptography o 3.2 Public-key cryptography o 3.3 Cryptanalysis o 3.4 Cryptographic primitives o 3.5 Cryptosystems • 4 Legal issues o 4.1 Prohibitions o 4.2 Export controls o 4.3 NSA involvement o 4.4 Digital rights management • 5 See also • 6 References • 7 Further reading • 8 External links [edit] Terminology Until modern times cryptography referred almost exclusively to encryption, which is the process of converting ordinary information (plaintext) into unintelligible gibberish (i.e., ciphertext).[2] Decryption is the reverse, in other words, moving from the unintelligible ciphertext back to plaintext. -
Implementation Considerations for the Introduction and Transition to Digital Terrestrial Sound and Multimedia Broadcasting
Report ITU-R BS.2384-0 (07/2015) Implementation considerations for the introduction and transition to digital terrestrial sound and multimedia broadcasting BS Series Broadcasting service (sound) ii Rep. ITU-R BS.2384-0 Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and economical use of the radio- frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions of the Radiocommunication Sector are performed by World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-R/ISO/IEC referenced in Annex 1 of Resolution ITU-R 1. Forms to be used for the submission of patent statements and licensing declarations by patent holders are available from http://www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/ISO/IEC and the ITU-R patent information database can also be found. Series of ITU-R Reports (Also available online at http://www.itu.int/publ/R-REP/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service (television) F Fixed service M Mobile, radiodetermination, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fixed-satellite and fixed service systems SM Spectrum management Note: This ITU-R Report was approved in English by the Study Group under the procedure detailed in Resolution ITU-R 1. -
Portable Shortwave Receivers
Portable Shortwave Receivers ● Longwave, AM, FM and Shortwave ELITE SATELLIT ● VHF Air Band ● HD Radio Reception ● RDS Display ● Superior Sensitivity and Selectivity ● Dual Conversion Design ● Huge 5.7 Inch Backlit Display ● Drift-free Digital Phase Lock Loop ● Direct Frequency and Band Entry ● Single Sideband Synchronous Detector ● Selectable Bandwidths ● High Dynamic Range ● Dual Programmable Clocks ● Dual Event Programmable Timers ● Stereo Line Level Input ● Stereo Line Level Output ● Earphone Jack ● Separate Bass and Treble Controls ● Adjustable AGC: Fast or Slow ● Telescopic Antenna AM/FM/SW ● Battery (4xD) or Included AC Adapter ● Scan and Search ● 1700 Total Memories (500 alphanumeric) ● Deluxe Carry Bag The Elite Satellit is simply the finest full-sized portable in the world. The Elite Satellit is an elegant confluence of performance, features and capabilities. The look, feel and finish of this radio is superb. The solid, quality feel is second to none. The digitally synthesized, dual conversion shortwave tuner covers all long wave, mediums wave (AM) and shortwave frequencies. HD Radio improves audio fidelity and adds additional programming without a subscription fee. Adjacent frequency interference can be minimized or eliminated with a choice of three bandwidths [7.0, 4.0, 2.5 kHz]. The sideband selectable Synchronous AM Detector further minimizes adjacent frequency interference and reduces fading distortion of AM signals. IF Passband Tuning is yet another advanced feature that functions in AM and SSB modes to reject interference. AGC is selectable at fast or slow. High dynamic range permits the detection of weak signals in the presence of strong signals. All this coupled with great sensitivity will bring in stations from every part of the globe. -
Numbers Stations
Numbers Stations What are Numbers Stations? Well this is subject to conjecture with some believing they are weather broadcasts in 5 figure codes, some others believe they may be hoax broadcasts. The majority of those who have listened to these signals over long periods believe they are from several of the world’s secret service agencies to outstations or agents in the field. There is now a significant amount of evidence in public documents and books to support this with the USA’s CIA, Britain’s MI6, Israel’s Mossad and Germany’s BND just some of the countries represented. Messages are sent in various modes e.g. Plain language, CW or Digital modes. The languages used in the first example vary also depending on the country of origin of the signals and they also use both female and male voices and these voices can be “live” or synthesised and can be in AM, USB or SSB modes. The format of the messages are nearly always 5 figure or 5 letter groups. The CW stations sometimes use MCW (modulated CW) which is Morse keyed as a tone on an AM signal. The format of the Morse signal can be as for the plain language types i.e. 5 figure groups, but they also use what are known as “cut numbers” to speed up transmissions. An example of this is to substitute A for 1, U for 2, V for 3, 4 5 and 6 stay as numbers then B for 7, D for 8 and N for 9 which means only 9 different characters need to be sent. -
Voice of Russia WRN Real Audio Search
Choose language Radio Russia World News Opinion & Analysis Society Politics Business Culture History Sports US Elections 2012 World service Frequencies US Edition website USA Live Schedule UK Edition website 2015 will be special Russia-Poland year Search Sochi sprucing up for US Foreign policy under German airports hit by Total evacuates African Pope follows pro-life march Olympic countdown Obama-2 security staff strike staff via Twitter Dr. Theofanis Use synthetic DNA to store your pics and Follow @VoiceofRussia 4,201 followers Exadaktylos Lecturer in European Politics favorite films at Surrey University, UK Tags: Sci-Tech, Opinion & Analysis, information, World, data protection, information Recommended technology , scientific researches Will Russia have new Daniel Cinna Jan 25, 2013 15:09 Moscow Time intelligence informational system soon? UK's Cameron 'tip toeing' on thin EU- Next galaxy crash scepticism line unveiled Dr. Georgy Toloraya Director of Korean Studies at the Russian Academy Institute of Economy The demise of Western civilization: Rated XXX Drinking and fighting in England N Korea's new round and Russia of nuclear struggle Dr. Mark Baimbridge Download Update: End of the Senior lecturer in Economics at the University of Bradford © Flickr.com/.hj barraza/cc-by-sa 3.0 world cancelled by Putin with 15 hours If you've ever thought that there's not enough space to store all left your CDs and digital photos then scientists have the answer for you! Researchers at the European Bioinformatics Institute say every film and TV programme ever made will now fit inside a Most recent teacup - using new DNA technology. -
Computational Propaganda in Russia: the Origins of Digital Misinformation
Working Paper No. 2017.3 Computational Propaganda in Russia: The Origins of Digital Misinformation Sergey Sanovich, New York University 1 Table of Contents Abstract ............................................................................................................................................................... 3 Introduction.......................................................................................................................................................... 3 Domestic Origins of Russian Foreign Digital Propaganda ......................................................................... 5 Identifying Russian Bots on Twitter .............................................................................................................. 13 Conclusion ......................................................................................................................................................... 15 Author Acknowledgements ............................................................................................................................ 17 About the Author ............................................................................................................................................. 17 References ........................................................................................................................................................ 18 Citation ............................................................................................................................................................ -
Russia and the Arms Trade
Russia and the Arms Trade Stockholm International Peace Research Institute SIPRI is an independent international institute for research into problems of peace and conflict, especially those of arms control and disarmament. It was established in 1966 to commemorate Sweden’s 150 years of unbroken peace. The Institute is financed mainly by the Swedish Parliament. The staff and the Governing Board are international. The Institute also has an Advisory Committee as an international consultative body. The Governing Board is not responsible for the views expressed in the publications of the Institute. Governing Board Professor Daniel Tarschys, Chairman (Sweden) Dr Oscar Arias Sánchez (Costa Rica) Sir Marrack Goulding (United Kingdom) Dr Ryukichi Imai (Japan) Dr Catherine Kelleher (United States) Dr Marjatta Rautio (Finland) Dr Lothar Rühl (Germany) Dr Abdullah Toukan (Jordan) The Director Director Dr Adam Daniel Rotfeld (Poland) Stockholm International Peace Research Institute Frösunda, S-169 70 Solna Sweden Telephone: 46 8/655 97 00 Telefax: 46 8/655 97 33 Email: [email protected] Internet URL: http://www.sipri.se Russia and the Arms Trade Edited by Ian Anthony OXFORD UNIVERSITY PRESS 1998 Oxford University Press, Great Clarendon Street, Oxford OX2 6DP Oxford New York Athens Auckland Bangkok Bogotá Bombay Buenos Aires Calcutta Cape Town Dar es Salaam Delhi Florence Hong Kong Istanbul Karachi Kuala Lumpur Madras Madrid Melbourne Mexico City Nairobi Paris Singapore Taipei Tokyo Toronto Warsaw and associated companies in Berlin Ibadan Oxford is a registered trade mark of Oxford University Press Published in the United States by Oxford University Press Inc., New York © SIPRI 1998 All rights reserved.