1930-06-24 — Page 11

TUESDAY, JUNE 24, 1930.

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RADIO TOPICS

TO-DAY'S PROGRAMME.

The following programme will be broadcast te-day from the Hong Kong Broadcasting Station 2.B.W. on 955 metres:--

i

6 p.nl. "Mignon", Overture,

Milan Symphony Orch. 6.09 p.m.- "The Gold Diggers of Broadway”,

Regal Cinema Orch. .6.17 p.m. "Until The End”,

Fred Rich and Orch. 6.23 p.m.- Satuany of the Heart",

Alert Kotalbey and Orch. 6.30 p.m. "The Toymakers' Dream".

4.38 p.m.- "Shenandoah, Sea Shanty",

W. H. Squire, Violoncello, 0.16 p. "Rigoletto", Quartette with Orchestra.

6.5.1 p.ra... "My Fute is in your Hands”,

Layton & Johnson.

Debroy Somers Band.

7 p.m "Seches Pittoresque”,

Angelus Orch, Symphonic, Paris.

7.00 p.m.-- "Chu-Chin-Choy"; Selection,

London Repetoire Urch.

7.17 p. "Dunce of the Rain-drops”,

Jack Payne B.B.C. Orch. 7.24 p.m.-- Large, from "New World Symphony", Sir Hamilton Harty Halle Orchestra. Scherzo, from "The New World",

Sir Hamilton Harty Halle Orchestra.

7.43 p.m.- "Coppelia Bollet",

Orchestra.

7.53 "The Mer y Brothers",

Sir Dan Godfrey and Bournemouth Municipal Orchestra. 8 pa-Chinese Programne rei tayed from Ko Shing Theatre until the end of the Play.

BEST RESULTS.

FROM A SPECKLESS WIRELESS SET.

LONDON TALK TO CANADA.

IN TOUCH WITH SIX PEOPLE ON TRAIN.

སྙ

Dust, though not everyone realises the fact, la one of the greatest enemies of the wireless A Telephone conversation took Art. In many parts of the appara-place on April 27 between an office tus it is most important that there in London and a train moving at should be what is known as good | G0 miles an hour across Canada. Insulation. This means that it This important advance in the must be impossible for current to development of the long-distanze pass between certain points. "Ma-

telephone was inaugurated by Mr. terial such as ebonite, which is C. J. Smith, European vice-presid a non-conductor of electricity, is ent of the Canadian National Rail- therefore used to art is a barriet ways. to any flow of electricity.

The dust that is always present in the air of any living-room con- sists of minute particles of al: kinds of substances. It readily settles down upon the surface of ebonite, and if it is left undisturb ed a coating is formed, which be comes gradually thicker and thick

er.

A small proportion of the, pr ticles of which dust is formed is usually A conductor of elec- tricity to some extent. A coat ing even of dry dust, then, may im- pair the insulation, which is 30 im-

portant in many parts of the set.

Sitting at his desk at the offices. of the company in Cockapur Street, Trafalgar Square, he spoke to Sir Henry Thornton, the chairman of the system, who was travelling be. I tween Toronto and Montreal, near- ly 3,000 miles away.

The train was two hours out of Toronto and close to a little town In Ontario, called Trenton, when communication across the Atlantic was established.

Mr. Smith was able to have coherent conversation with Sir Henry, and spoke to several other people in the train.

"Hullo, Sir Henry!" It was Д But there is something worse

momentous moment than this. Dust has ย strong went Mr. Smith said, "Hullo, Sir Like blot Henry! Yes, I can hear you," and rffinity for moisture. L.B.C. Wireless Symphony ng paper, It absorbs and retains then went on to exchange experi- Vater very readily. The air of ment remarks about the weather living-rooms is always alightly end, each other's health. humid, and a coating of dust upon

Arrangements had been made an insulating surface soon absorbs for the Prime Minister. Mr. Mac- moisture and forms a kind of Fonald. to speak to Sir Henry cement, which is a bad insulator. Thornton on the inauguration of

can the service, but atmospherics be Noisiness in a receiving set very often be traced to the presencegan to interfere with the conver- of dust on ebonite parts such as sation before the line could be con- coil mounts, valveholders and ter- nected with Chequers, minal panels.

Mr. Smith told a reporter that Reducing Signal Strength. at first he heard Sir Henry as clear- The worst effects of al occurly as if he were speaking from the when dust is allowed to collect be- next room. tween the vanes of tuning conden- sers, for then it is often respon- sible for crackling and tearing nataes, which sound exactly like at- mospherics. Duat may also cause a reduction in signal strength, and selectivity.

RECTIFIER.

for

"After that," he said, "I spoke to about six people. I was just getting used to the fresh voice when they would go off and some- body else would come on. Later there was some fading. and the tapping of Morse could be heard. When the room in which the think we had somebody from New ireless set is housed is being York break into the conversation, swept the apparatus should beard once or twice there was a back covered up to protect it from dust, ground of all sorts of mysterious and when you are covering up do voices." aut forget the batteries.

Mercury-vapour roctifiers higher outputs are known to moat electrical engineers." It is, how. ever, less generally known that there are at present rectifiers in existence, based upon a different principle, which have been brought to the highest degree of perfection and are constructed for outputs from a few watts up to 40 kV/A.. These rectifiers which represent a pioneer work of Philips Radio Ltd., are based upon an invention of Wehnelt in which use is made of the electronic emission of a specially prepared hot flament in a rare RS. The rectifying tubes constructed according to this original discovery, however, proved to be useless in practice. After numerous experiments Philips The best way of removing dust Radio succeeded in making import- from ebonite surfaces is to use on ant and fundamental Improvements artist's sky brush. There is, how and in 1923 a rectifier was Con- ever, one risk about this; the hairs structed, specially intended for are fixed in a metal mount, and charging small accumulators. this, If unprotected, might cause a In this case double-phased rec- | short-circuit, The brush can be tification is applied. The valve, made a perfectly safe tool by

containing a wire realstance and dinary sticking plaster. filled with hydrogen. A lamp of this kind automatically alters Its

Many a high tension battery runs long before its time simply because its top has been allowed to accumulate a coating of dust

mixed with moisture

A SORRY PLIGHT. ‘A GOOD HOUSEWIFE is the so-called regulator lamp, covering the metal part with or

CONSTABLE'S STORY CAUSES VILMA BANKY'S NEW INTEREST resistance in accordance with the

HIM TROUBLE.

Bangkok. June 9. Policeman Sigata, of the Bangkok station, is to-day in a sorry plight because of a lie to save his wife,

IN LIFE.

Declaring that her only interest now is to "be a good housewife," Vilma Banky, the famous Hun- garlan screen star, in mail week) announced her permanent retirement from the screen.

The other day he reported to the authorities that he was attacked by an unknown person in the Phya She was married to Rud La Sundara lane. Police investigation Rocque, the film actor, in 1927. from several sources failed to indi- Miss Banky, a blue-eyed blonde, cate that there occurred such an in- was born in Budapest 27 years ago.

the

жав attract-

cident at the date mentioned. It She made her stage debut in was revealed that neighbours beard Vienna at an early age, and appear sounds of a struggle and then cries ed in several early films produced in of pain in the room of the police- Hungary:"

Mr, man. Shortly afterward Sigata

Samuel Goldwyn, with his wife left their room hur famous producer, rledly in a taxi. They went to ed by her photograph in the Central Hospital, where Police. a. shop window while visit. man Sigata had his wounds treating Vienna, and engaged her to ap- ed, according to the report.

pear in screen productions in the All 11-year old step-daughter of United States.

1

current passing through it, so that if the current tends to increase its realstance increases also, thereby keeping the current at the value determined by the regulator lamp, so that it is now unnecessary, to check the charging rate.

Short-circuiting of the D.C. ter-

longer no minala damage.

According this principle Philips Radio manufacture rec- tifiers for the most divergent pur- poses. We mention those intended

Can

to

cause

If dust has collected between the vanes of variable condensers, It may be removed by the careful use of a clean leather. Do not use a pine-cleaner for the purpose, as is sometimes recommended, for this is very apt to leave little bits of cotton behind amongst the vases.

Anyone who possesses a vactium cleaner can remove dust from be- tween condenser varies very easily by making use of 1. Before this

is done, however, bath should be disconnected.

batteries

Telephone communication with a moving train is established by broadcasting the voice from train to carrier-current telegraph wires which run parallel to the railway track, and vice versa.

From these wires on the Cana dian system the voice is carried to pick-up stations at Marrishurg and Cobourg, Ontario, and thence trans. ferred to the Bell Telephone Cen- tral Office at Kingston, Ontario, where it is placed on regular long- distance circuits.

Calls From Any Town. Calls are not confined to and from towns on the section of rail- way line being covered by an equipped train, but from any town

or city in North America which has

long-distance. telephone connections.

The railway passenger can place a call through the train radio tele- phone operator asking for the per- son to whom he wishes to speak) and giving the exchange number and town in which he may be found.

Connections with the train are

made by placing a call with the long-distance operator. For exam ple, the caller can ask for "Mr. Smuth, who left Montrea! recently the International, Limited,

on

for charging a large number of WIRELESS PROBLEM. Canadian National Railways." accumulators, for feeding mirror arc-lampa, special types for telephone exchange, equipped with & smoothing chocke, for electrical signalling installations, railways, etc.

100-KILOWATT TRANSMITTER

--

IN AUSTRIA.

the policeman was questioned. The She made, several films with little girl stated that her step-Rudolph Valentino, including "The father and Nang Norm, her Eagle" and "The Son of the Shaik," mother, quarrelled. Bigata tried to and has starred with Ronald companies to increase the power of strangle his wife and she struck Colman.

CHECKING AMATEURS'

CURIOSITY.

Bangkok, June 7. The authorities are installing a device rendering nugatory the pro- vate and official wireless, messages. clivities of those listening to pri For some time past it has been evident that enthusiasts are taking too keen an interest in private mea

Aages.

In connection with existing plans of the German broadcasting various transmitters in that coun him with a knife. Then they In an interview in 1923 Mias try, the Ravag held discussions as stopped quarrelling immediately Banky declared: "My marriage can to the desirability of erecting a

[The Singapore Free Press Is in« and rushed out to the hospital to not possibly be anything but an) similar transmitter in Austria. gether, she sald.

asset to my career."

The general opinion is that informed that the device referred to order to ensure good reception in in the nature of an apparatus by Austria, erection of a 100-Kilowatt which messages can be distorted and made unintelligible to the out transmitter fa essential. R

sider.cz? Ma It has been decided to erect this

British wireless messages receiv.

Sigata was again questioned at Central Hospital. He said that his previous report was correct. But

aa, the investigating officer was leaving, the policeman' called him

HER ADVICE.

The cost of a call works out at the regular long-distance rate to the point at which connection is made with the train, plus Za. for the train connection.

The purpose of the train tele. phone system is really to be of use. to business men who can be in.com. atant communication with their offices while travelling.

R100 TELEVISION.

RADIO WEATHER MAPS ON

· ATLANTIC FLIGHT,

When R100 flea to Canada ono will make meteorological history,

On the airship will be a tiny Instrument, similar to the Fulto

television experiments last year,

By means of this, small instru- ment the meteorological officer on board the airship will be able to receive pictures of maps and weather charts five minutes after they have been taken, prepared loy the meteorological section of the Air Ministry at Cardington

This will be the Arst time any long-distance air fourney has been

Two wireless fans met on top transmiltter at a 20 to 80 kilometres en in Malaya are, the Post Office graph sets used during B.B.C. back and said that he wished to of a tramcar. Behind them sat an distance from Vienna. alter his former statement. He old lady who could not help over- The plans are now being elabor.authorities atate, open to everyone went on to say that It was true he hearing their conversation.

ated.

Add to listen-in to and such other pri

vate messages as are received in and his wife quarrelled. Seeing First Wireless fans "I had Moreover, plans exist to build a that her mother was being - Jamaica last night!"

broadcasting station in Vienna as Paya Lebar usually concern, ship treated the 11-year-old daughter Second W.F. "Jamaica? You it is expected to be of great bene ping and are therefore of little srobed his with a knife has don't eat How many valves it to broadcasting tones importance. When did not make a correct report be First W.F. Two valves! The Radio-Vienna has decided to Should animportant wireless ser cause he did not wish his step night before I had Budapest "adopt a new interval signal in the be instituted in Malaya no daughter to be punished: Second W.F. You'd Budapest near future. Like the one former doubt the authorities would take A report of the incident was sub- on two valves? Well, I'm blowed 12 ly used, this Interval signal will adequate steps to prevent private mitted to the Director General,At this point the old Indy rose imitate the ticking of a clock, but messakes being overheard.] upon whose decision farther pros to get off the tram, auch a way as to indicate at ceedings will be taken against the

ng man, she said, sternly once how many minutes the inter- pollesman, who in spite of bis ofke.

No. W. Insters val will Taste verybody about your breach

Com

etiqu

Bangkok

minute three, etc. If Instance with four cannot be ascertained you ought to see. à good; minutes, Intervál, the listeners will, how long the interval

regularly hear four ticks, the next be used

made with these preparations for keeping in touch with weather conditions. ASKE however it It will be the first time, too, that beforehandpicture transmission from the hal will-ground to sircraft has bean put to actical use.

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