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THE CHINA MAIL
RADIO TOPICS
EMPIRE RADIO.
THE POLICY OF THE BBC. OUTLINED
RADIO INVENTION.
WONDERFUL DEVELOPMENTS:
PREDICTED.
CROWDED ETHER.
RUGBY'S ALL-POWERFUL STATION.
One very real difficulty in modern communication, "Colonel radio Purves said in mall wook, address- ing a meeting in London, was the congestion of the other, due to the great and increasing number of "It is becoming stations at work. difficult," he said. "to provide fox all of them separate wave-lengths which will not interfere with one another, Radio-telegraphy can be operated on a single wave-length, but human speech consists of many different frequencies, and cones- quently a broad band of adjacent Mr. Pratten said it
anti-wave-lengths is needed to transmit It therefore cipated that within a few months its articulate tones.. it would in all probability be posmakes a heavy demand on what sible for Sydney to speak by tales known as 'ether space, and it becomes correspondingly difficult to find an unoccupied region into which a new service can be fitted."
pahno to London.
was
from "The at
Interest in the question' broad-
Sydney, Feb. 34% casting to the Empire has been res
The potentialities of radio were cently revived, and the B.B.C.made the theme of the speeches of Mr. a statement of policy on the sub- Prattan (Minister for Customs) and ject. It will be racalled that some Sir William Noble, ax-chairman of time ago an official of the Broadthe British Broadcasting Company casting Company outlined a pos- at the official opening of the sible plan for an all-red girdle of radio and electrical exhibition in broadcasting stations round the the Town Hall to-day... Both speak world, which could relay the trans-era referred to the wonderful deve missions of a short-wave station ilopment in radio invention and ap- Britain. In the preparation plication during the past three for the regional station scheme to years, and indicated that still more Feride better broadcasting facil wonderful developments were like Ligs for listeners in this country ly in the immediate future. Empire broadcasting his been alt lowed to, "recede into the back ground, but the B.B.C in a state ment pointed out that the idea had by no means been abandoned.
"It has always been part of the
Sir William Noble emphasised permanent policy of the broadcast this statement by saying that within lig authority to develop as soon as a very short time it would be pób- Colonel Purves went on to dos- possible effective facilition for Emible for the Ministers of the cribe how the difficulty of shielding pire broadcasting," it is announced Federal Government to ring up the British Receiving Station at "While keeping this idea well to the Ministers of the Crown In Londen Wroughton, near Swindon, from the
emanating fore it was necessary, however, for and converse with them
speech signals. the Broadcasting authority to ro Mr. Pratten, after referring to Rugby had been overcome. cognise its prior duty to those who the progress of wireless and alec-strength of the Rugby signale pay for receiving licences in the tricity, said that already they had Wroughton," he remarked "may be Mother Country. The broadcasting got beyond the transference of as much as ten .thousand times: authority has realised all along the sound through the ether, and tele-greater than that of the American urgency of establishing facilities vision had become an accomplished signals, on the same wave-length, for effective alternative programmes fact Moving pictured and radio to which alone the Wroughton re- through some new scheme, such as had been combined, so that within ceiving apparatus must respond. high-power regional stations a abort, space of time the picture The problem has been successfully Nevertheless, the Empire project Alm as it was now known would solved, and the system as a whole has been carried forward alongside probably disappear, having been re-discriminates perfectly between the, the British scheme of distribution. placed by an apparatus that would cast-going and west-going signals." Moreover, it has to be kept in mind enable picture patrons to see and This has been accomplished by the that the effecitve continuous use of hear living actère who might be use of extremely sensitive and rapid short-wave transmission for the re playing and speaking their parts switching devices at the London laying of broadcast programmes has thousands of miloa. away. Mr. Prst and New York trunk exchanges. not yet passed beyond the experten aald that he had made inquiries These are operated by the actual, mental stage. It is recognised that, regarding the radio and electrical voice currents of the subscriber even handled by comparatively ex trades, and these young industries who is speaking. They enable him. perienced experimenters, only a were taking a firm hold in Aus as it were, to clear the path for his limited degree of success, varying tralia. He had been informed that own speech and to paralyse the re- according to the time of day. has nearly one-half of both the radio turn path for the, time being. Even been achieved with short-wave and, electrical exhibit had been the utterance of a single short He word has to operate and restore transmission. It would be assum manufactured in Australia. ing too much on the scientific side was pleased to learn that there was these devices with speed and car. to suggest that, with the data avail-a growing tendency for established tainty." able, an uninterrupted service of firms of the Motherland to establish broadcasting on short-waves is a themselves in Australia. It was in feasible scheme.
this way that the Commonwealth would grow stronger
the
With regard to the new station to be erected near Dundee, Colonell Purves stated that it would be con- "Nevertheless, while making full
nected with the, London trunk: ear allowance for these difficulties, the Sir William Noble said that dur-change by lines carried wholly in B.B.C. are anxious to establish an ing the two months he had been in underground cables, and provided effective system of uninterrupted Australia he had taken an interest with telephone repeater stations at breadcasting throughout the Em-in broadcasting and was surprised intervals of about fifty miles. It pire, and they hope for success be at the development of radio was hoped that the station, would fare very long. There le, However, throughout
Commonwealth be available before the mors severe no question of the reccnstruction of Hig belief was that there would radio conditions of the summer sea- the Daventry station for this speci- be a continued development of radio
son are experienced! fic purpose. When experiments in in Australia. When the British hand produce the anticipatedre Broadcasting Co. commenced broad- sults, and when the necessary funds casting four years ago there were are made available, the facilities only about ten firms that had any will be provided for an auxillary thing to do, with wireless, whilst at service."
present there were upwards of 2,000 British manufacturers and dealers in radio. During those four years there had been such an advance in Britain that at present there were 2,500,000 listeners. The speaker also referred in high terms of the quality of the broadcasting pro grammes in all the States of the Commonwealth.
On the subject. of the efficacy of short waves for long-distance work, it may be added, opinion is divided. Amateurs" in Britain claim Astonishing results from short-wave experiments on low-power, two-way communication with Australia and New Zealand having been accom- plished. There is also the example of the American short-wave sta tions, the best known being ZKAF, Schenectady, and KDKA, Pitts- burgh. Both these stations can be received in Britain with much less dificulty than American sta-
band.
Waves.
ጉ
'MORE CULTURE.
· 11
а
RADIO TO THE ANTARCTIC.
"
TUESDAY, MARCH 29, 1927
DAILY CROSSWORD PUZZLE.
19. (This, oruss-word puzzle has been made by an expert But our readern are, warned to look out for occasional phonetic spellings, auch ausharbon, plow, and dition)
26
37
40
29
16.
B
13
19
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130
27
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148
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Fk
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157 58
©THE INTERNATIONAL, SYNDICATE.
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Chway-
Supervart:
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· Zostand, bird 12-Wrath.
Tämän luland, anciant Malos, GranoN 14-The beard; an of
whet 15-Lifeldes 17-A river, N. W
Belgium 18-Belonging to the
19-Scrape: 21-Genuine 24-Sodium (ohem.
gym.} 25-Kingly
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28-The Spirits of the dead (Rom.. Antiq.) il
'81-A· household pest 63-Diminutive suffix 24-At a distance 36-Belonging to thes 37-Customary 38-One who uJON 19-Tɔ out down. 40-And not
43-To talk about
vainly
47-A negativa. 148-An. Iceberg: [49--A Renog,organi -181To make dim
183-Portal |66-Bara.
|38-To venulate |60-Qoom, zatray
#1-Thus (Latin), |42-Religion (abbr), '
68-To originate |64–Terimake.İRDS
VERTICAL 1-Young Coat 2-Booner than: *-Tiima-period. 5-Girl's name
6-Vertical part of a
step or stair
7-An ending of
adjectives/
"Harry" 120-Fundamantri
22-Eaph (abbr) |23-Aggregate
26-Personal pronoun: j27+Drunk (slang) 129-7:00
30-Combining: form.
Norve
{St-Hour front 32-Presently. 125-A fatherfa, alator {36-Thresfald
42-A bookbinding
leather
{45-By; through:
<Profix) 64-Rattroad (abbr): [45-A. mound! (Roman)
Antic) |48-Additional
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{62-A golf term
Motor our for heavy 54-Exist
Fonda (England) Post.
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|65-Ending: of' superia-
tive adjjotīvas 67-Prafix. Through 58-Combining form,
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The solution or the above, orose-word puzzlä will appear in to-morrow's issue along with a new cross-word puzzle.)
"The service," he went on, "is in the nature of an experiment. If it proves successful its range and and then be pieced together into capacity will be extended. It is its original condition before it probable that during, the winter paises on to the Jand lines at the months an average, approaching receiving end. twenty-two hours. out of twenty- The Transatlantic service la a four could be given,. and if the de- really wonderful development in mand warrants it the hours of ser- telephony," Colonel Purves conclad- vice will be extended During sum ed. "There are no fewer than ten mer the conditions are more difficult, repeater stations on the land line and the period from seven p.m. to portion of the route between Lon- midnight might often be unwork- don and New York. Each of these able. The question of a future re-adds complexity to the system and duction in the cost of the service introduces further trials and tri- must be dependent on its revenue bulations to the poor little speech
their earning power coupled with exten- currents on
adventurous alon of hours of service, upon exjourney through one might almost perience of the actual cost of run- say, hundreds of switches. trans
Mr. C. W. Goyder, the young wire-ning and maintenance, and upon formers, and amplifying valves, lese amateur experimenter of Mill the possibility of devising cheaper until they reach the individual ther Hill, who made wireless history by equipment if and when additional are originally aimed at."
channels of communication become being the first Britisher to establish necessary. The plant used is very communication with the Antarctic, expensive. Irrespective of the an- Dual running and maintenance costa, the development expenges have been very high, and the capital. cost of the plant on this side only approaches £500,000."
in
"Sir
2
Upon the question of secrecy, Colonel Purves observed that while no claim to secrecy was made, it was difficult to overhear both sides. of a conversation. Even partial overhearing was a recognised weak- ness, but the average user would probably not be seriously deterred by the fact that part of his conver
tions in the ordinary broadcasting As a further illustration of the use of short waves, recently South African amateurs carried out
has achieved further success. 徐 tests with amateurs in the U.S.A., and on many occasione established He fixed an appointment with his two-way communication. The Mar- newly-found Antarctic friends con beam etations for Empire tele- the Norwegian whaler, the graphic work also employ short James Clark Ross," to pick him up again. Mr. Goyder "went to his station, wirelessed the "Antarctic, and in few moments was exchang- ng greetings with the whaler.
Strengths and other wireless tech- The wireless station at Omaha in nicalities beloved by the experimen Nebraska recently distributed ter were exchanged, and then- laughing competition to all its lis-series of dots and dashes told Mr. teners in, says a contributor to the Goyder that the whaler with whom "Manchester Guardian. Over a he was "talking had not changedation might be overheard by a stray hundred competitors took part and her position in the seven days that each roared his loudest into the had elapsed since his first "convers microphone, one, gentleman of sation," having been held up by colour stimulating himself by a pre- bad weather. liminary roll round the studio floor in order to work himself up to the right degree of hilarity. Good marks were given for many things. ranging from "volume" and "cen- tagious quality" to "wholesomeness" so that evidently no points would have been awarded for a nasty, cynical little anigger, Aa a de- velopment of the old English pas- time of "grinning through a horse-changed with him on behalf of Dr. collar" it must have been the most Macleod. impressive spectacle ever arranged.
But it is no use the B.B.C. thinking
Mr. Goyder then asked if a man named Jorgenson would come for ward. During the week Dr. Mac Goyder's feet, and remembered that leod,
of Cambridge, read of Mr
on the "Sir James Clark Ross" was
Jorgenson, with whom he had spent the previous season whaling in the Antarctic... Jorgenson, had not @x- forgotten... And wishes: were
of borrowing the same idea. Thou- ceivers and groan aloud I can't sands of indignant wireless enthu-stand these highbrow. programmes siasts would only lay down their re-] at any, price!!!.
SUNDERSTAND THAT MR-BLOT - MY RIVAL FOR THE AMBASSADORSHIP IS ON THIS TRAIN- I MUST SEE THE PRESIDENT BEFORE HE DOES-ILLRUN RIGHT TO THE
AH! I HEARD YOU WERE ON BOARD!
He suggested the eavesdropper. advisability of regular correspond-1
system of code ents devising words and phrases.
To secure real accrecy in radio telephony is an exceedingly difficult. problem," he added. “The use of
Beam system ie not a solution, since the track of the 'beam' in- cludes a very considerable area within which signals are strong and easily read. But we fully realise the importance of secrecy, Fand engineers, wo have prèviously been straining every nerve to pro- duce pure and perfect transmission of speech are now applying them- selves, to, the task of cutting it to fragments before, transmitting it, so that it may cross the radio link a jumble of unmeaning sounds
BRINGING UP FATHERS DAY
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RANSACK of
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VAIMOOR AN AN BRE 10 VS MONA THOR R SPENT
EXERT
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