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IN RADIO—The Signal Must Be Good

/ MUCH pioneer work in the propagation of directional i radio waves and in the transmission of programmes | in foreign languages has been done by the General » Electric Company of New York. The following article, which is the second instalment of the text of a talk given by Boyd W. Bullock, Assistant Manager of Broadcasting, gives some indication of the work that has been done by this company in an endeavour to further the science of radio for peaceful purposes.

onan ‘\ AFTER a careful study of the situation and of the freguencies still available, General Electric applied to the F.C.C. yor certain new authorisations. > One of these was a power in_trease to 100 kilowatts for both ;>W2XAF and W2XAD. Another -was for the use by W2XA4D of two additional frequencies, 9550 k.c. and 21,500 k.c. Still a third was ferXpcrmission to build an internatignal broadcast station (the present proper designation for a shortwave broadcast station) at Belmont, California. The latter "jon to use 20 kilowatts and _ hate on W2XAF’s or W2XAD’s frequencies of 9530 and 15,330 k.c., while they were not on the air at Schenectady. The object of all these provisions was to enable General Electric not only to improve reception in Latin-America, but also to make such reception as consistent as possible throughout a 24-hour day; and also to provide a practical and consistent service to the regions comprising the Far Hast. All these new facilities have been granted by the F.C.C., and at present the two new frequencies have been in use by W2XAD for approximately eight months. Reports from Latin-America are very gratifying. 4 Beam Antennae ¥ ILE directive antennae, of the Alexanderson panel type, have been used for many years by W2XAF and W2XAD -particularly by the latterthe new play contemplates the regular use of such antennae for all transmissions to particular countries or areas.

For instance, on the evening | schedule to South America, a 30degree beam from W2XAD on 9550 k.c. is centred on Rio de Janeiro, while W2XAF sends out a second such beam, on 9530 k.c., and adjacent to the 9550 beam on the west. W2XAD thus specialises to the predominantly Portugueses eastern half of South America, while W2XAF uses Spanish announcements, etc., to the western half. Both beams carry programmes carefully adapted to the desires of their respective predominant audiences. This is the technical and programme arrangement which has already elicited pleased comment. The effect of the directive -ggntenna is such that the beam "@ignal strength-or field inten"ey as it is called-at a given peint is several times what it would be with the same power in an ordinary antenna. All this work costs money, and the question may well be asked: "Why does the General Electric Company do it-especially since international broadcasting cannot pe commercial-sponsors cannot puy advertising time?" The answer is simple. First, because General Elec- | tric is interested in the technical and social advance of all phases of electrical enterprise. Second, because General Fiectric believes that such broadcast- ing is a vital factor in the promotion of international goodwillnot by the propaganda method, put by making all peoples better acquainted with each other, for, knowing a person-in most cases -is to like him. It is a long-range and far-sighted viewpoint-but General Electric knows that ¥ Spi bor tb 4a

through peaceable and understanding conditions,- world prosperity can flourish, bringing with it national prosperity and the prosperity of great industrial enterprises which provide employment, ‘buying power, and a real wealth to hundreds of thousands. Thus such a matter as a good Signal can influence, if only by devious indirection, the lives of many people.

This article text was automatically generated and may include errors. View the full page to see article in its original form.I whakaputaina aunoatia ēnei kuputuhi tuhinga, e kitea ai pea ētahi hapa i roto. Tirohia te whārangi katoa kia kitea te āhuatanga taketake o te tuhinga.
Permanent link to this item
Hononga pūmau ki tēnei tūemi

https://paperspast.natlib.govt.nz/periodicals/RADREC19390106.2.92

Bibliographic details
Ngā taipitopito pukapuka

Radio Record, Volume XII, Issue 30, 6 January 1939, Page 39

Word count
Tapeke kupu
608

IN RADIO—The Signal Must Be Good Radio Record, Volume XII, Issue 30, 6 January 1939, Page 39

IN RADIO—The Signal Must Be Good Radio Record, Volume XII, Issue 30, 6 January 1939, Page 39

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