by Wong Chun Kau, Jolly. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1992. / Includes bibliographical references (leaves 84-88). / ABSTRACT --- p.1 / ACKNOWLEDGEMENT --- p.3 / Chapter 1. --- INTRODUCTION --- p.7 / Chapter 1.1 --- Land Mobile Radio (LMR) Communications / Chapter 1.2 --- Paramilitary Communications Security / Chapter 1.3 --- Voice Scrambling Methods / Chapter 1.4 --- Digital Voice Encryption / Chapter 1.5 --- Digital Secure LMR / Chapter 2. --- DESIGN GOALS --- p.20 / Chapter 2.1 --- System Concept and Configuration / Chapter 2.2 --- Operational Requirements / Chapter 2.2.1 --- Operating conditions / Chapter 2.2.2 --- Intelligibility and speech quality / Chapter 2.2.3 --- Field coverage and transmission delay / Chapter 2.2.4 --- Reliability and maintenance / Chapter 2.3 --- Functional Requirements / Chapter 2.3.1 --- Major system features / Chapter 2.3.2 --- Cryptographic features / Chapter 2.3.3 --- Phone patch facility / Chapter 2.3.4 --- Mobile data capability / Chapter 2.4 --- Bandwidth Requirements / Chapter 2.5 --- Bit Error Rate Requirements / Chapter 3. --- VOICE CODERS --- p.38 / Chapter 3.1 --- Digital Speech Coding Methods / Chapter 3.1.1 --- Waveform coding / Chapter 3.1.2 --- Linear predictive coding / Chapter 3.1.3 --- Sub-band coding / Chapter 3.1.4 --- Vocoders / Chapter 3.2 --- Performance Evaluation / Chapter 4. --- CRYPTOGRAPHIC CONCERNS --- p.52 / Chapter 4.1 --- Basic Concepts and Cryptoanalysis / Chapter 4.2 --- Digital Encryption Techniques / Chapter 4.3 --- Crypto Synchronization / Chapter 4.3.1 --- Auto synchronization / Chapter 4.3.2 --- Initial synchronization / Chapter 4.3.3 --- Continuous synchronization / Chapter 4.3.4 --- Hybrid synchronization / Chapter 5. --- DIGITAL MODULATION --- p.63 / Chapter 5.1 --- Narrowband Channel Requirements / Chapter 5.2 --- Narrowband Digital FM / Chapter 5.3 --- Performance Evaluation / Chapter 6. --- SYSTEM IMPLEMENTATION --- p.71 / Chapter 6.1 --- Potential EMC Problems / Chapter 6.2 --- Frequency Planning / Chapter 6.3 --- Key Management / Chapter 6.4 --- Potential Electromagnetic Compatibility (EMC) Problems / Chapter 7. --- CONCLUSION --- p.80 / LIST OF ILLUSTRATIONS --- p.81 / REFERENCES --- p.82 / APPENDICES --- p.89 / Chapter I. --- Path Propagation Loss(L) Vs Distance (d) / Chapter II. --- Speech Quality Assessment Tests performed / by Special Duties Unit (SDU)

This study is an historical and critical analysis of pirate radio in Europe generally and Great Britain in particular. The purpose of this study is to outline the history of pirate radio, and to assess its influence upon the British radio broadcast system. Research material employed in this study includes historical accounts of pirate radio in Europe, British Governmental documents, periodical articles, and autobiographies of relevant British politicians of the period. This study concludes that the establishment of a legal commercial radio broadcast system in 1972 was a direct result of the existence of the British off-shore "pirate" radio stations from 1964 to 1967.

Graduation date: 1937

The wealth of information available on the Internet holds the potential to aid development in Africa. In order to be effective, such information needs to be contextualised to respond to local needs and practices. The combination of old and new media can support uptake and improve acceptance of new technologies in developing countries. The purpose of this qualitative study was to investigate the perceived usefulness of agricultural information sought on-line and broadcast via community radio in the two Community Multimedia Centres (CMCs) of Namaacha and Murrombene, in rural Mozambique. The data was generated from focus group discussion, individual interview, document analysis, and observation involving farmers and radio presenters. The study has shown that on-line agricultural information responds to the needs of the farmers because it contributes to eliminate pests and help farmers to make decisions about their activities. The study has also shown that there is a communication gap between farmers, extension workers, and volunteer reporters working at the community radios of the two CMCs. Volunteers have no agricultural knowledge. The problem this creates manifests itself primarily when they try to translate on-line agricultural information from Portuguese into local languages. Farmers have difficulties expressing their problems. Extension workers are not available to act as experts and mediators between volunteers and farmers. A collaborative website focusing on locally relevant content was suggested as a possible improvement.

This study is a comparative examination of approaches to talk radio as a genre on three Ugandan radio stations. The aim is to draw conclusions, from observations made about these stations, about the potential of talk radio to encourage public debate around social issues and improve democratic participation despite pertinent challenges in Uganda. The study first outlines a theoretical framework, which is informed by Habermas's theory of the media as a 'public sphere'. This framework is applied to an exploration of traditions of talk radio that have emerged globally in order to assess the potential of these traditions to play a role in contributing to the establishment of such a 'public sphere'. The study then goes on to discuss the historical development of radio in Uganda and the establishment of the current broadcast landscape. The focus is on the way in which this history has been defined by a struggle around public expression, in which government has repeatedly sought ways to control media as a vehicle for public expression. It is proposed that Ugandan talk radio has the potential to play an important role in ensuring broad participation in public expression. It is against this background that the study then describes and analyses the development of the talk genre at three Ugandan radio stations (each one an example of, respectively, a commercial, community and public service station). It is explained that staff on all three stations emphasise the importance of talk radio in encouraging participation, by their audiences, in the public debate of social and political issues. It is argued that, because of limitations that exist within these stations, none of the talk show teams fully realize the potential of the genre for participation in such debate. The picture that emerges is one of unequal access, with those sections of radio audiences in positions of privilege being further empowered, while those on the margins remain excluded from public discussion. The study finally recommends ways to improve public participation on Ugandan talk radio, noting the need to review government support, the problems of organizational culture within the stations, the need for more guidelines on practical arrangements around talk show production and the question of contradictions that exist at policy level.

Orientador: Antonio Carlos de Jesus / Banca: Juliano Maurício de Carvalho / Banca: Terezinha Fortes Mestrinelli / Resumo: Apresenta-se um levantamento do macro-ambiente do município de Araçatuba para verificar se há viabilidade para a instalação de uma rádio universitária educativa em seu perímetro. Parte-se de uma visão histórica da radiodifusão educativa em território nacional, incluindo o trajeto realizado pelas emissoras universitárias em nosso país. O trabalho também analisa a legislação brasileira vigente, fornecendo um panorama operacional dos instrumentos legais existentes na atualidade. Destaca-se ainda o caminho da radiodifusão educativa em São Paulo de sua gênese até os dias atuais, apontando os percalços e as diferenças ocorridas entre o desenvolvimento das rádios educativas entre este estado da federação e o restante do país, para enfim realizar uma análise dos aspectos econômicos, políticos, sociais e legais pelas quais poderia passar a edificação de uma emissora com fins pedagógicos nesta cidade. / Abstract: It is a study of the macro-atmosphere of the city of Araçatuba, São Paulo, Brazil to verify if there is viability for the installation of a radio educational university. It starts with an historical insight into educational broadcasting in Brazil, including their progress. The thesis also analyzes the current Brazilian law, there by giving a panoramic view of the current legal process required. It also highlights the progress of educational broadcasting in the state of São Paulo from its beginning until now, pointing out the difficulties and differences between the development of this educational radio and to those of the rest of the country. In conclusion, the thesis covers an analysis of the economical, political, social and legal aspects required for the construction of a broadcasting station with educational objectives in Araçatuba. / Mestre

Made available in DSpace on 2014-06-11T19:24:02Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-12-20Bitstream added on 2014-06-13T20:51:16Z : No. of bitstreams: 1 patrizzijunior_ca_me_.pdf: 877135 bytes, checksum: 4b6629ed806a6aa8f8f4f5c11241afd6 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Apresenta-se um levantamento do macro-ambiente do município de Araçatuba para verificar se há viabilidade para a instalação de uma rádio universitária educativa em seu perímetro. Parte-se de uma visão histórica da radiodifusão educativa em território nacional, incluindo o trajeto realizado pelas emissoras universitárias em nosso país. O trabalho também analisa a legislação brasileira vigente, fornecendo um panorama operacional dos instrumentos legais existentes na atualidade. Destaca-se ainda o caminho da radiodifusão educativa em São Paulo de sua gênese até os dias atuais, apontando os percalços e as diferenças ocorridas entre o desenvolvimento das rádios educativas entre este estado da federação e o restante do país, para enfim realizar uma análise dos aspectos econômicos, políticos, sociais e legais pelas quais poderia passar a edificação de uma emissora com fins pedagógicos nesta cidade. / It is a study of the macro-atmosphere of the city of Araçatuba, São Paulo, Brazil to verify if there is viability for the installation of a radio educational university. It starts with an historical insight into educational broadcasting in Brazil, including their progress. The thesis also analyzes the current Brazilian law, there by giving a panoramic view of the current legal process required. It also highlights the progress of educational broadcasting in the state of São Paulo from its beginning until now, pointing out the difficulties and differences between the development of this educational radio and to those of the rest of the country. In conclusion, the thesis covers an analysis of the economical, political, social and legal aspects required for the construction of a broadcasting station with educational objectives in Araçatuba.

This research study investigates Lotus FM, as one of many South African Media components that are catering for one specific cultural or religious group. The investigation explores the implications of practice of a pecific media component that caters for specific cultural or religious groups operating in a post-apartheid South Africa. After the end of the apartheid era in South Africa, a number of South African media components have proclaimed their commitment to reconciliation and nation building within South Africa by attempting to unite audiences. The South African Broadcasting Corporation, which held the monopoly on South African Broadcasting for decades, has promulgated the notion of the rainbow nation to audiences in South Africa. Since 1994, sub-components of the different South African media segments were developed to cater for specific ethnic or cultural groups by the station managements. This was aimed at reversing the effects of pre-1994 media that catered for the former ruling minority only or ethnic groups that were categorized by the former political dispensation. It is possible, however, that this has resulted in a renewed and continued separation of interest groups present in South Africa today.

A research report submitted to the Faculty of Humanities, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Master of Arts (Journalism and Media Studies), 2016 / This research report is an exploratory study into two regional commercial music stations (YFM and 947) and their use of Twitter as a tool to relate to, interact with and enable participation from their audiences. Of particular interest was why they are using it, what they are doing with it and how this affects the on-air content pre, during and post broadcast, if at all it does. [Abbreviated Abstract. Open document to view full version] / GR2017

A pesquisa desenvolvida tem como objetivo analisar os conteúdos jornalísticos das rádios Cero Corá e FM Melodia e verificar se o meio, que atua como instrumento de divulgação, representa de forma simbólica a cultura e a identidade das comunidades fronteiriças. A análise foi desenvolvida na fronteira de Ponta Porã-Pedro Juan Caballero e Corumbá-Puerto Quijarro, e a seleção dos objetos de pesquisa, a saber, as rádios de fronteira, teve como fundamento o fato de caracterizarem-se as emissoras como binacionais. Por ser uma região limítrofe do Brasil, onde não existem barreiras geográficas, caracterizada pela conformação de fronteira seca, os municípios sul-mato-grossenses e paraguaio e boliviano representam uma área peculiar para pesquisa, uma vez que os intercâmbios entre as comunidades são cotidianos. Sendo assim, pretende-se identificar se os discursos e as vivências da população que mora na fronteira estão presentes nos relatos das emissoras radiofônicas. / The research aimed at analyzing the journalistic content of Cerro Cora and FM Melodia radio stations and certifying that the medium represents in a symbolic manner the culture and identity of the neighbouring communities. The analysis took place on the borders of Ponta Porã-Juan Caballero and Corumbá-Puerto Quijarro and the choice of the research objects, i.e. the neighbouring communities\' radio stations, happened thanks to their binational characteristic. Since it is a borderline region of Brazil, with countries separated by land borders and with no actual barriers between them, the exchange between communities is common-place and thus such municipalities of Mato Grosso do Sul, Paraguay and Bolivia are very peculiar subjects to research. Hence, the goal here is to identify whether the language and experiences of the population of the borders are present in the broadcast of the radio stations.