"Wired Wireless"
To following letter, and the to it supplied by the Chief Engineer of the NZBS, will probably be of interest ‘to a many of our readers: Sir,-In an article entitled "The BBC Marks Time" in a recent issue of The Round Table, there appears the following: In a very few years from now, British broadcasting for all except country listeners is likely to be based not on wireless but on wire. Already in many parts of yt . . listeners have the new system inThe advantages it offers over ordinary broadcasting are many. The range of programmes can easily be enlarged to three, four, five or more channels, is no atmospheric disturbance. . . . Wired wireless and frequency modulation will soon make ordinary broadcasting seem remote. Some explanation by the NZBS engineers would be much appreciated.
J.W.
M.
(Auckland).
This is: the explanation supplied by the Technical Section of the NZBS: The use of wires for electrical trans mission of sound is not new-telephones were in use for many years before radio broadcasting began-but radio broadcasting, or "wireless" as it is also known, operating as it does without any connecting wires between the transmitting source and the re ceiver, has risen to such importance to-day for the reasons that it can serve its listeners at a much cheaper cost, and give a greater selection of programmes than a wired system. In large cities with congested accommodation it is not always practicable to install an efficient out-door radio aerial, .so. that radio reception obtained under these circumstances may be of an inferior standard. In these few cases the use of "wired" programmes may be preferable, provided the listener is willing to pay the higher costs involved. It is extremely unlikely, however, that the "‘wired’" method of disseminating programmes will ever compete successfully with. radio broadcasting. With regard to Frequency Modulated Broadcasting, this requires the use of much higher transmission frequencies _ Special receivers, The coverage range at. frequencies is restricted by the having a clear "line of sight" path between transmitting and receiving aerials, and ¢onsequently the "shadow effects’ behind hills and large buildings can be quite serious, 5
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New Zealand Listener, Volume 16, Issue 396, 24 January 1947, Page 27
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355"Wired Wireless" New Zealand Listener, Volume 16, Issue 396, 24 January 1947, Page 27
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