Wire Broadcasting Research Articles

Radio propaganda in Process of Soviet Modernization of Society in 1930<sup>s</sup> in Buryatia

The features of the formation and development of wire broadcasting in the Buryat-Mongolian ASSR in the second half of the 1930s are analyzed. On the basis of previously introduced into scientific circulation and new archival documents, the authors prove that in the context of the organizational and technical strengthening of radio, the development of mass-political and cultural-educational propaganda, the state has made serious efforts to give the auditory means of communication the most important role of political and cultural education of citizens, increase their educational level and social activity. It is argued that at the end of the 1930s, the activities of the Republican Radio Committee for Radio and Broadcasting under the Council of People’s Commissars of the Buryat-Mongolian Autonomous Soviet Socialist Republic were characterized by its growing importance in the field of self-education of citizens, enlightenment and cultural and political propaganda. It is shown that serious work was carried out to create an effective broadcasting structure and differentiation of programs, special attention was paid to the organization of radio propaganda in the Buryat language. In describing the experience of the first five years of radio broadcasting in the republic, issues of staffing the radio committee, its close work with the department of cultural agitation and propaganda of the Regional Committee of the All-Union Communist Party of Bolsheviks are touched upon. It is noted that the most important results of this period were an increase in the volume of wire broadcasting, an improvement in the content of political, musical, literary, dramatic and other types of broadcasting.

A common carrier multi-channel television wire broadcasting system

The factors governing the choice and design of a television relay system and the history and background of the development of various systems are surveyed. The basic technical features of a system carrying four television and four radio programmes are discussed. Information is given regarding various types of cable and their specifications. Network jointing and matching fittings are described and the method of using the system characteristics to plan a network is explained with examples and an indication of the sort of coverage that can be obtained. Various types of subscriber installations can be provided and their characteristics are defined and typical examples given of subscriber's equipment. The operation of the main receiving station and repeater equipment is explained in some detail and finally test methods and test equipment are described.

Current developments in wire broadcasting

Current developments in wire broadcasting

The specification and testing of television wire-broadcasting systems

In view of the continued growth of the wire broadcasting of sound programmes, attention has been given to the possibilities of the wire broadcasting of television programmes since the television service first commenced in 1936. The first licence for commercial operation of a television wire-broadcasting system was issued by the Post Office in the autumn of 1950 and four systems were in operation before the summer of 1951. These licences are issued subject to certain technical conditions and are accompanied by recommended standards of performance similar in scope to those which have for some years been associated with the licence agreements for the wire broadcasting of sound programmes.The main purpose of the paper is to describe and discuss the technical conditions and recommended standards of performance specified for television wire-broadcasting systems, and the methods of testing used to check whether the systems conform to the conditions and standards.Mention is made (with reference to more detailed accounts which have been published elsewhere) of some aspects of the history and development of wire broadcasting, to show the extent of its present and possible future use and to introduce the considerations which have been taken into account in drafting the conditions and the performance specification.The main features of a number of experimental or working systems are tabulated. Special features of these are discussed and results are given of tests made on four systems.

Wire Broadcasting in Great Britain

Wire Broadcasting in Great Britain

London discussion on “Some engineering aspects of audio frequency wire broadcasting in Great Britain”

London discussion on “Some engineering aspects of audio frequency wire broadcasting in Great Britain”

North-Eastern Section discussion on “Some engineering aspects of audio frequency wire broadcasting in Great Britain”

North-Eastern Section discussion on “Some engineering aspects of audio frequency wire broadcasting in Great Britain”

Some engineering aspects of audio frequency wire broadcasting in Great Britain

Some engineering aspects of audio frequency wire broadcasting in Great Britain

Reply to the North-Eastern Section discussion on “Some engineering aspects of audio frequency wire broadcasting in Great Britain”

Reply to the North-Eastern Section discussion on “Some engineering aspects of audio frequency wire broadcasting in Great Britain”

Reply to London discussion on “Some engineering aspects of audio frequency wire broadcasting in Great Britain”

Reply to London discussion on “Some engineering aspects of audio frequency wire broadcasting in Great Britain”

Wire broadcasting investigations at audio and carrier frequencies

The general principles underlying the design of wire broadcasting systems for the distribution of programmes at audio and carrier frequencies are considered. In Part 1, relating to audio frequency, questions concerning the remote control of receiving and amplifying stations are discussed. Details of tests on distribution cables are given, and it is shown that, with any particular load, attenuation can be rendered reasonably constant over the audio-frequency band.In Part 2 brief consideration is given to the utilization of electricity supply networks for the distribution of programmes at carrier frequencies. The theoretical and practical aspect of the utilization of telephone lines for the same purpose is treated in greater detail.

The author's reply to the discussions on “Wire broadcasting investigations at audio and carrier frequencies”

The author's reply to the discussions on “Wire broadcasting investigations at audio and carrier frequencies”

Discussion on “Wire broadcasting investigations at audio and carrier frequencies” before the Mersey and North Wales (Liverpool) Centre, at Liverpool, 15th January, 1940

Discussion on “Wire broadcasting investigations at audio and carrier frequencies” before the Mersey and North Wales (Liverpool) Centre, at Liverpool, 15th January, 1940

Discussion on “Wire broadcasting investigations at audio and carrier frequencies” before the Wireless Section, 6th March, 1940

Discussion on “Wire broadcasting investigations at audio and carrier frequencies” before the Wireless Section, 6th March, 1940

Wire broadcasting investigations at audio and carrier frequencies

The general principles underlying the design of wire broadcasting systems for the distribution of programmes at audio and carrier frequencies are considered. In Part 1, relating to audio frequency, questions concerning the remote control of receiving and amplifying stations are discussed. Details of tests on distribution cables are given, and it is shown that, with any particular load, attenuation can be rendered reasonably constant over the audio-frequency band.In Part 2 brief consideration is given to the utilization of electricity supply networks for the distribution of programmes at carrier frequencies. The theoretical and practical aspect of the utilization of telephone lines for the same purpose is treated in greater detail.

Discussion on “Wire broadcasting investigations at audio and carrier frequencies” before the Mersey and North Wales (Liverpool) Centre, at Liverpool, 15th January, 1940

Discussion on “Wire broadcasting investigations at audio and carrier frequencies” before the Mersey and North Wales (Liverpool) Centre, at Liverpool, 15th January, 1940

The author's reply to the discussions on “Wire broadcasting investigations at audio and carrier frequencies”

The author's reply to the discussions on “Wire broadcasting investigations at audio and carrier frequencies”

Discussion on “Wire broadcasting investigations at audio and carrier frequencies” before the Wireless Section, 6th March, 1940

Discussion on “Wire broadcasting investigations at audio and carrier frequencies” before the Wireless Section, 6th March, 1940

Principles of audio-frequency wire broadcasting

The quantitative limitations of wireless broadcasting have stimulated an interest in alternative methods of distributing programmes to listeners. Wire broadcasting has certain basic technical and economic advantages over wireless broadcasting. Wire-broadcasting technique has been extensively applied in Holland, where 50 per cent of the Dutch listeners have their programme service laid on to the house by a wire connection. Relatively slight developments of the same nature have taken place in Great Britain.“Audio-frequency rediffusion” is the most common form of “ wire broadcasting ” existing to-day. In “audio-frequency rediffusion,” programmes originally transmitted by “wireless” are picked up by a receiver located where reception conditions are favourable, and the output of this receiver is connected, usually by landline, to the input of an amplifier which raises the level of the receiver output to a value sufficient to energize at once a thousand or more loud-speakers connected to the amplifier by a conducting network.In common practice this network is supported on house chimneys, but sometimes it is carried on poles. The consumers' branch feeders are wired in lead-covered cable.The paper analyses the effects set up by the interaction of the reactances and resistances composing the network and the loud-speakers; and it shows that the received level, particularly towards the ends of the lines, varies enormously both with loading at certain audio frequencies and with audio frequency for a given loading.Certain generalized rules are laid down to indicate how the distortions incidental to this form of wire broadcasting may be partly minimized or wholly eradicated.The analysis of the network performance allows the preparation of a specification for the amplifier necessary to supply power to the network.

Principles of audio-frequency wire broadcasting

The quantitative limitations of wireless broadcasting have stimulated an interest in alternative methods of distributing programmes to listeners. Wire broadcasting has certain basic technical and economic advantages over wireless broadcasting. Wire-broadcasting technique has been extensively applied in Holland, where 50 per cent of the Dutch listeners have their programme service laid on to the house by a wire connection. Relatively slight developments of the same nature have taken place in Great Britain.ldquo;Audio-frequency rediffusion” is the most common form of “wire broadcasting” existing to-day. In “audio-frequency rediffusion,” programmes originally transmitted by “wireless” are picked up by a receiver located where reception conditions are favourable, and the output of this receiver is connected, usually by landline, to the input of an amplifier which raises the level of the receiver output to a value sufficient to energize at once a thousand or more loud-speakers connected to the amplifier by a conducting network.In common practice this network is supported on house chimneys, but sometimes it is carried on poles. The consumersapos; branch feeders are wired in lead-covered cable.The paper analyses the effects set up by the interaction of the reactances and resistances composing the network and the loud-speakers, and it shows that the received level, particularly towards the ends of the lines, varies enormously both with loading at certain audio frequencies and with audio frequency for a given loading.Certain generalized rules are laid down to indicate how the distortions incidental to this form of wire broadcasting may be partly minimized or wholly eradicated.The analysis of the network performance allows the preparation of a specification for the amplifier necessary to supply power to the network.