1930-08-07 — Page 2

HONG KONG DAILY PRESS, THURSDAY, AUGUST 7, 1930.

RADIO

FEATURES

EMPIRE BROADCASTING.

+

ITS POSSIBILITIES AND PROMISES OF PROGRESS.

The subject of an efficient short wave brondoasting service establish- ed at home and of sufficient power to supply the Colonies has been a

most keen ote to Britishers abroad for the last year or two. Whether capable of direct reception for the short wave enthusiast or picked up and relayed by a local station on the ordinary broadcast band for the 158 ambitious listener, the advan- tages of such a service are immense,

[By "COHERER:”]

The rapid development in short wave receivers has done a good deal towards surmounting the first diffi- culty, and in evidence before the

Colonial Conference, Sir John Reith, Chairman of the B.B.C., recently stated that a short wave service to supply the Empire was now practicable from the technical standpoint.

Overcoming Fading.

"

SOME USEFUL HINTS.

A bad cell in an H.T. battery can completely ruin its performancë, but sometimes good working can be restored by shorting" the cell in: question.

When tuning suddenly jumps from one setting to another, appar service (through the licence, fees)ently without any reason at all, the from which no benefit to them is earth connection is generally at apparent. The B.B.C. would ap pear to endorse this view. At the

same time, it should be borne in mind that the home Treasury deduct quite a large proportion of the licence receipts of home listeners, and in this direction appears the most "feasible source for funds for an Empire Broadcasting scheme. The approximate figure is £400,000 annually, more than sufficient for the service,

The further exploration of the For over two years now the short-

Heaviside Layer" theory has wave station G.3.5.W. at Chelms done a great deal in getting over

Colonial, Conference Scheme. ford has been carrying out an ex-the fading effect that proves such a perimental service that has done hindrance to long distance short. It should be a matter for great little more than whet the appetite wave reception. To a large extent satisfaction to all local listeners to of Colonials and pained out what this trouble is now being eliminated know that the subject of Empire number of Broadcasting is playing quite a might be done! Even the keenest of hy, the erection of a short wave fans will appreciate the aerials at various heights and prominent part in the discussions fact that the present service is lack- angles and all emerging into the of the Colonial Conference now sit- ing from many points of view and can by no means be considered to have catered for the requirements of the Colonies.

Obstacles to Surmount.

fault.

Intermittent signals, clear

*

one

moment and weak the next, can often be traced to a coil fitting *** Shortening" an aerial electric loosely in its helder. ally by means of a small condenser to improve selectivity is usually more successful in the case of valve sets with reaction than in simpler sets,

When tuned circuits are joined together by means of inagnetic coupling the closer the coils are fogether the greater the coupling will be.

Keep your batteries, out of the way of windows, or keep them covered well, as sunlight falling directly on them is harmful

one receiver, the fading effects ofting in London, and that from the LOCAL FIRM'S ENTERPRISE.

any one aerial at any moment being counterbalanced by the full recep- tion capabilities of other aerials.

The Question of Finance. The second difficulty is apparently still awaiting discussion and many views have been put forward in the home Press as to the provision of funds.

In the main there have been two eriour obstacles in the path of an ‹fficient. Empire service; firstly, the technical difficulties as regards over- coming fading, and secondly as to

Naturally, the majority of home whence should come the funds for

why they Maintaining the service and supply-listeners see no reason ing programme material.

EVERYTHING

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H.T. ELIMINATORS AT REASONABLE COST.

A NEW LOUD-SPEAKER.

NOVEL TYPE.

TO-DAY'S WIRELESS

PROGRAMME.

BROADCAST. BY ZB W, ON

335 METRES.

1 to 11.30 am-Commercial News. 11.30 am to 12.30 p.m.-Chinese

programme.

A new type loud-speaker is ex pected to make its appearance shortly on the local market, known as the Inductor Dynamic Loud

sories. It is not of the moving-coil 12.30 p.m.-European midday pro- Speaker. This speaker is some- thing new in the way of radio acces type and, equally, can hardly be classified as an ordinary electro-1.30 p.m.-Weather report. Midday magnetic. The principle upon

programme continued. which it works is something on the lines of the balanced armature, but 2 p.m.-Close down.

..

the cone-drive has free travel over quite a respectable distance, and is 6

A highly centred by springs whose natural periodicities are removed from the audio-frequency range. anchored cone is used.

B.B.C.. CONCERT LOSSES.

BILL FOR BIR THOMAS

→ BEECHAM!

The B.B.C. are considering send- for several thousand pounds as his ing a bill to Sir Thomas Beecham share of the losses suffered last year through the running of sym- phony concerts.

The concerts were given through- out the season on a co-operative basis, and it' was partly the B.B.C.'s inability to make them. pay that caused the recent dispute between Sir Thomas. and Savoy to Hill. At present there is a possi

famous conductor for as much as £6,000, but everything is being Tbility of the B.B.C. asking the

done to cover the loss by other

evidence called for from various Colonies there is indicated every promise of an early start on such a scheme. The idea that seems to

Radio amateurs who wish receive most consideration is the

eliminators usually find it very dif- erection of local transmitters in change from. H.T. batteries to each of the Colonies so equipped as ficult to procure a satisfactory in- to be able to receive the Home trans-strument at anything like a reason- mission and re-broadcast. This is able price, and, should anything go rong with the instrument it is, undoubtedly quite a sound scheme in the majority of cases, not pos to work on as it will relieve local sible to have repairs done locally.

We learn that H.T. eliminators listeners from the necessity of in are now being made locally by the |stalling short wave receivers requir-Canton Trading Association. All ing some measure of skill in opera- the work is done under expert Euro- pean supervision, and only the best tion, quite a simple set would be materials are used. The firm also capable of reproducing a London gives a full guarantee with each

instrument... programme.

To

Service Difficulties. Other difficulties still exist and the question of service is one that will require serious consideration.. serve all the Colonies at qually convenient times will neces aitate nothing short of a twenty- four hours' service as listeners in, say, Jamaica, would hardly appre- ciate the hours that are convenient to Hong Kong. No doubt the dif- culties will be overcome in time and even "if each Colony or group of Colonies are considered, us re- gards time, once or twice a wock there need be no doubt as to the appreciation of a service through: rut the Empire."

NEARLY THREE MILLION.

B.B.C. LICENCES.-

BIG INCREASES.

When will the saturation point by reached in the spread of wire. less in Great Britan?

This question is raised in the re- port of the B.B.C. for 1929, inued recently, which gives some remark- able figures of the development of broadcasting and registers new re cords in the number of liceners ja aned.

During 1929 licences issued num- bered 2,956,738, an increase of 328,344 on the previous year. Licen ces issued to the blind totalled 15,904, an increase of about 1,000.

Income for licences was £1,470,000. compared with £1,307,000 in 1928.

Groundless Fears,

In a foreword addressed to Mr. H. B. Lees-Smith, the Postmaster- General, it is stated:

"Broadcasting is still in its car.. ly years, and there are no preced ents to assist in forecasting its development.

"Once it appeared likely that a saturation point in the number of licences would soon be rescued, Land it was said that as the novelty country would grow weary of this new invention, 398" especially might resent an educa tional bins. Now,

Statistica seem to indicate that those apprehensions were ground- lesa.!!

It is expected that the new head.

quarters in Portland-placs should

be ready for occupation about the end of 1931.

Anyone requiring an H.T. elimin- ator is advised to call on the above firm for particulars.

means.

Sir Thomas. who is no longer associated with the B.B.C., stated that he has heard nothing from Savoy Hill concerning the loses

the

"I am not very interested," said.

"But if you get a heavy bi** "I haven't thought about it." "Supposing the bill arrived. Would you just take no notice of it: or tear it up, or "

I never tear bills up. That laughed Sir wouldn't work,"

Thomas.

HAVE YOU HEARD THESE? ·

Here are lists of long-wave and short-wave stations which should be picked up by anyone in Hong Kong who has a moda- rately good set suitable for IB- ceiving such signals. Success in picking up these stations also depends very largely upon fav-. ourable atmospheric conditions, Readers are invited to add to this list should they succeed In picking up any station not in cluded in either of these lista.

LONG-WAVE STATIONS.

Wave length

Call Sign K.Z.I.B. 1,153

Kilo

cycle

(Metres) Station

260" Manila 277 Shanghai K.S.M.S. 1,065 280. Tientsin C.R.C. 1,070

K.R.C. 310 Shanghai

967 320 Peping C.O.P.K. 045 345 Tokyo J.O.A.K. 870 353 Hiroshima J.0.F.K 530 846 335 Hong Kong Z.B.W. 357 Bombay V.U.B. 840

J.O.I.K. 361 Sapporo

$30 303, Keijo J.O.D.K. 820 370 Nagoya J.O.C.K. 810 370.4 Calcutta V.U.C 800.9 380 Kumamoto J.O.G.K. 790 390 Sendai J.0.H.K. 770 J.D.A.K. 760 V.U.R. 754 J.O.B.K.. 750 C.M.B. 739 KZBM 720

395 Dairen 308 Rangoon,

400 Osaka 410 Canton 413 Manila

SHORT-WAVE STATIONS.

STATION

CALL FIGH

07.86

€0.12

68.7 80.

Nauen

A.F.K. Dobintz (Germany) Khabarovi (Eussia) 07.

A.G.J.

43.5

42, 41.3

Moscow Rom Forth Singapore 38.8 Kootwijk (Holland)

Bangkok (Siam)

RF.N.

1.MA. 8.A.G.

V.8.1.4.B.

32 Sydney

91.55 Melbourne

31.48 Schenectady 31.20 Eindhoven (Holland) 31. Nairobi (Kenya):

31,28

TINE (HONG Kone)

OF WORKING

4,435 Mon., Wed. & Fri., 6 p.m. & 2am. 4,980 6-10 p.

8,291 Nat rogular

6,000 Tues, Thura, Sat, 8 p.m.

6,896 Sunday midnight

7,142 Daily 8 30p.m. & 11 p.m.

7,310 Not regular

7,730 Daily 1 p.m.

9,280 Not regular .9,603

regalar

||

P.C.J HS4.P.J. 9.108 Tues. & bri., 9 p.m.-1 am. 2.B.L J.L.O.

W.3.X.A.F. F.C. ZLO

9,630 Daily 7 a.m.

9,620 FTL 8 A., Sat. 3 am. & 10 am.

9300 Not regular

9,677 Midnight daily-

11,020 Midnight-3 am daily

11,751 7.30 pm, & 3 a.m, daily, except

Saturday and Sunday

29.0 27.8

25.63

2.M.E. Bydney Bandeng

PLE Chelmsford (England) 5.8.W...

10,526 Not regular

Manila Bahenectady.

245 -23.35 18.88 Bandoeng. 18.4. Kootwijk (Holland)

Bangkok

16.58 Halon (Holand)

188

Kootwijk (Holland)

15.74 Bandoeng.

15.8 Nancy (France)

13.93 Pittsburg

1

KLIE

12,240 Nightly· 13,850m. Wod, Fri, Sat.

16,102 Dally 6.30 pm to midnight 16,301 Daily 7 p.m.

17 200 Daily 8 p.m. to midnight

W2X.0.

PLG. P.C.L

P.O.K.

18,404 Each

P.LE.

10,351 Daily 8 ani,

WAXK

afternoon. 19,220 Daily 480-7 pan.

| 21,640 - Not zegular

[Allowance must be made for summer-time" in most Euro

pean countries, which is one bour ahead of true time.]

gramme.

me; Aunty Pat, Uncle Dick and to 6:30 p.m.-Children's program- Uncle Jeff will try to entertain the kiddies.

6.30 to 8 p.m.--Enropean program- me of Columbia records, selected and supplied by Messrs, Ander. son Music Co.

: Casse Noisette Suite. (Tschaikow

sky), B.B.C. Wireless Symphony Orchestra.

Liebesleid (Kreisler) and Zapa- teado (Sarasto), Efrem Zim- balist, Violin Solo. Classica Selection (Ewing),

Squire Celeste Octette. Florrie Ferde Old Time Medley,

Florria Forde, Comedienne. Memories of Mendelssohn (W.

Sear) Squire Octette. The Lonesome Road and Lady Divine, Layton and Johnstone. The Belle of New York-Vocal Gems, Columbia Light Opera Co.

The Singing Focl-Selection, De-

broy Samers Band. Your Love Is All That I Crave-

Norah Blaney (Soprano). Singin' in the Bathtub-Eddie

Walters, Comedian. Show of Shows Selection," Regal

Cinema Orchestra.

sp.m.-Chinese studio concert.

9 p.m-Weather report. Chinese

studio concert continued. 14.30 p.m.-Close down."

ANSWERS TO INQUIRIES.

WJ.W.-The local agents for the loud-speaker you mention are the Canton Trading, Association.

RA.H. (Saigon). In reply to jour letter, I am making inquiries and will communicate the result as soon as possible.

T. C. C.

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Just arrived-New Shipment of LOEWE R533 A.C. SETS.

8126 without Loud Speaker. $150 with Loud Speaker

Newly arrived

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Loud Speakers of various typesi

Pertrix Batteries 150, 100 s, and Grid Bias Batteries. Gramophone pick ups of best quality.

Gramophone Electric Motors

B* Eliminators a speciality to fit any requiremen

Demonstration Hours --

11-11.30 am. 12.30-1.30 pm 5–5.30 p.m. During demonstration hours expert European adrice is given on all Wireless matters.

THT

CANTON TRADING ASSOCIATION LTD.

CARL SCHROTER, Hanager-

5TH FLOOR, CHINA BLDG.

TELEPHONE 24810.