1932-09-08 — Page 2

Page

HONG KONG DAILY PRESS, THURSDAY, SEPTEMBER 8, 1932.

B.B.C. AND PUBLIC OPINION

VALUE OF WIRELESS GROUP LEADERS

་་

...

WIRELESS

RADIO

FEATURES

trackless electria cara have all been

found to be sources of interference. New Dirigible Radio Research

RECEPTION Becauso of the very general use of

LOCAL INTERFERENCE

London, August 9:-The marked sensibility of the modern wire less receiver has

very naturally

of

electric motors, interference from sach plant is probably the most im portant of all. Experience shows that it rarely, extends to a greater distance than 200 yards, and usually becomes inaudible at 50 yards. A cure can, however, be usually effect

acute an

one.

I

Successful. Two-Way Phose Worked Out Between Blimp in

Florida and Ohio Home Port

*

But there's a deeper purpose that just creating thrills for paa- sengers behind the work being done by the radio airship experimental

broadcast tests conducted from the

1

TO-DAY'S WIRELESS

*PROGRAMME,

BROADCAST BY Z.B.W.

ON 355 METRES.

"

to 11.30 n.m.-Stock quotations

and exchange quotations. 11.30 a.m.-Chinese recorded pro-

gramme.

The four panels, extending the length of the radio room, include a power unit, a modulator unit, a power amplifier and an oscillator! and intermediate amplifier... The transmitter is capable of carrying

gramma ct records kindly loan-

ù by a listener." both voice and code messages 1,000 1 p.m.-Local time and weather.

miles by day and 5,000 miles by night.

Over the Everglades of Florida, half the current when the operator a little Goodyear' airship, flying is not speaking. Oxford, July 24-The second

high, taras me its radio and "talks" national summer school for wireless

to its home port at Akron, Ohio, group leaders was opened last

Ite passengers, ranging all the night in the hall of New College, accentuated the problem of intered by connecting each main to earth when the speakers were Mr. C. A.ference from the operation of through a condenser of large caph-way from Florida mayors and city city, though sometimes a choke coll dignitaries to picturesque Seminole Siepmann, B.B.C. director of talks, local electric plant. The use in each main lead is also necessary. Indians, get many a thrill as wea and Professor Winifred Cullis, maina-operated sets, such as are Although simple remedial men ther reports and other news come Chairman of the programme Rub.

sures can be prescribed for most of, in from the far away Ohio city. committed of the Central Council. specially liable to disturbances con- Messages of good wishes were sent veyod along the electric mains, as the troubles encountered the prob- tem of high-frequency medical ap. by the Archbishop of York and by well as the progressive adoption of

paratus, for a very definito reason, Sir John Roith,

electricity for industrial and

still remaina

A Mr., Siepmann said that the

domestic purposes, have increased medical set of the "'ultra-violet B.B.C. depended largely on the

type is in itself a wireless wireless group louders for the the difficulties in this connection, so ray Bucccss of its work. The group

that within the last few years there transmitter sending out waves of be. work they were doing was one of have been many complaints from tween 2,000 to 5,000 metres in the most interesting and important listeners concerning impaired recep., length. Even with the most selee pieces of social experiment that was tion on this score. In this country tivo receiving set it is impossible happening to-day. There was no the owner of a receiving set pays to cut out such interference, which often is troublesome over a range mora vital factor in the world situn- an annual licence fee for the right | tion than the reaction of public to instal and operate wireless re- opinion to the various influences ceiving apparatus, and therefore that were brought to bear on it, quite naturally expects to be able and the group leaders were build-to receive a broadcast programme ing up something less blind and unaccompanied by annoying disturb

The B.B.C. and the Post dary circuit is provided. The alter pilota Aying the blimps in New receivers and transmitters of prac- | capricious than the public opinion ances. which was so often exploited and Office have made a practice of a native appears to be to use a comYork and (ieorgia, hundreds of tically unlimited range. The trans- mado an instrument for. private sisting so far as possible in theplete metallic screen large enough miles away, but the westber station mitting equipment, built as com- ends Broadcasting was beginning elimination of interference from to enclosa both the apparatus and also keeps all ships in the vicinitypactly as pessible and of lighti to inculcate in the public mind &avajdable causes, and, as a result of the patient. This latter method has of Akron informed of local weather! weight, has a range of 200 miles by senso of tolerance had respect for a good deal of research on the sub- already been adopted in America ject, are now in a position to pre-

other people's views.

1

12.30 to 2 p.m.-European pro

report.

2 p.m.-Close down.

is

In one corner of the radio station is the main receiving equipment, including both a short-wave receiv up-to-date experimental station ater and a long-wave set used to pick the blimp basc in Akron, which was; up weather reports from the gov recently licensed for general experi-ernment station at Arlington, Va., mental work under the call letters which are translated to charts im- WAXQ.

mediately for the benefit of pilots in 6 the air and relayed to them at once.

Important machines for register.6 ing wind direction and velocity, sure are in constant use here

Airship Equipment.

Some day when great air liners ply the sky routes, the work being done between these little "fying

of 300 yards. As a result of exten-laboratories" and Akron may re-variations in temperature and pres

the subject the sive research on Post Office advocate that future insult in the saving of passengers and millions of dollars' worth of pro- stallations should be re-designed so

perty. that a closed non-radiating accon

Messages ore not only sent to

Each Goodyard airship is equip ped with standard aircraft radio

conditions. A recent heavy storm

Both was thus avoided by several of the day, 2,000 miles by night. The policy of the B.B.C. was scribad remedial measures in the able in hospitals where such app blimps flying in this vicinity.

phone and ecde conversations can be carried en between a blimp and the ground station.

and elsewhere, and is certainly suit-

ratus is almost in constant use. At great majority of cosci.

present efforts are being made to Before any special investigation restrict the private use of high-fre

is undertaken in any particular case,quency medical apparatus to periods however, the complainant is invited

outside thle usual broadcasting

2 Basi Station Equipment.

governed almost entirely by the attitude of the public towards what they did. It was not generally re- cognized how sensitive the B.B.C. was to public opinion, although it could be obstinate in face of

naire which often furnishes suf. hours. It is understood that such the only experimental station to versation by phone with the radio- threats, and not at all amenable toficient information as to the nature restriction is enforced by local the kind of voiled opposition which of the interference in question.gulations in such countries.

sprang from (notives other than those with which it was concerned. The B.B.C. was a public service, and its 'wholo objective was to en- rich the experience of the public.

A Critical Public,

to complete and return a question-

Complaints are received by both tha B.B.C. and the Post Office, and all receive the attention of the latter, being dealt with either by the local Post Office Engineering Staff or in apec cases by the Engineer-in- Chief. As an indication of the ex- Professor Winifred Cullis said tent of the work it is of interest to that it depended largely on that note that the total number of cases hudience whether broadcasting was of electrical interference dealt with to be made into a great instru-by the Post Office is about 10,000 & ment of education, using the word. year. In a recent lecture Colonel in the sense of preparation for life, A. 8. Angwin gave a particularly anil not in its more limited technical lucid account of the methods which

Education was a subject in which people were intensely inter- ested, and for the majority of people it had now taken the place of theology as a subject about which to dispute. The public's present attitude towards education was un doubtedly & critical one, and that was perhaps a good thing.

sense,

the Post Office have adopted in tracing sources of interference and of the means adopted a eradicate the trouble in the different types of electrical apparatus. The cures sug gested cannot fail to excite the ad- miration of the technician because of their simplicity and evident ap plicability.

A Miniaturs Radiator.

JA

The base station equipment located at Wingfoot Lake, just out side of Akron, includes four panel transmitter and is probably

re-have a tranmitter using a new system of modulation which saves

HAVE YOU HEARD THESE?

Here are lists of long-Ware and short-wave stations which should be picked up by anyone In Hong Kong who has a mods-- rately good set wailable for re- ceiving such signals. Buccess in picking up these stations also depands very largely upon Kay- ourable atmospheric conditions. Beaders are invited to add to this list should they mucceed in picking up any station not in oluded in either of their lista.

37;

LONG-WAVE STATIONS.

Wave length (Metres) Station

200 Manila 277 Shanghai

Call Kilo Sign

cycle K.ZI.B. 1,153 K.8.M.S. 1,083

345 Tokyo J.O.A.K. 353 Hiroshima 3.0.F.K. 355 Hong Kong Z.B.W. 357.1 Bombay 361 Bapporn 300 Keijo 370 Nagoya 370.4 Caloutta

#TO

880 840 V.U.B. 840 J.O.LK. 830 J.O.D.E. 0 BIO J.0.0.K. V.U.C. 800 380 Kumamoto, J.0.0.K. 790 300 Sendai 'J,0.H.K. TID 395 Dairen J.Q.A.K. 760 400 Oraka J.Ó.B.K. 410. Canton C.M.B. 7:30 480 Mania K.ZEM. 625

SHORT-WAVE STATIONS.

STATION

CALL Shake

A

Tho programmes which they draft- ed were largely the result of infor mation about previous programmes, Most of the interference oncoun-, collected in all kinds of ways. Alltered has been proved to be of a this information was pooled, and high-frequency nature and is attri on the basis of it the first draft butable to the

sidden Changes of programmes were drawn up. That current in electrical circuito-eg. information was increasing, because the making and breaking of con 67.65 Dobints (Germany) the mumber of groups was growing-tacts and keys.

Khabarovsk (Busula) R'A-97. Sometimes the 60.1%

63.7 Nationw

LAGI. There wore over 1,000 groups last electrical circuit in question acte 50

Mosco

E.F.N. winter, so that information was now a miniature wireless radiator 43.5

Route 42 Perta coming in from very many different sending out waves through space 418.

Blagspare parts of the country.

Kootwijk (Holland) 88.8 but in 90 per cent, of the cases

Bangkok (Biam) "It was, formerly quite difficult

examined the interference is due to 85.2 Bydany to persuade busy people to come direct conduction of the high-fre

81.55 and broadcast. They had an idea

quetley current along the wires o that broadcasting was all jazz she the mains circuit itself. A portable enid. "We have quite got over wireless receiver is generally need 25 Bydney that. Distinguished people now for the purpose of tracing the realize that it is worth their while source of the trouble. If the run to come, because they get a wcnof the street mains is followed it

24.5 23.85 derful audience. Thanks to the exis found that the interference on 18.88 collent way in which broadcasting such a receiver increases in volume 154 has been controlled, it can call on the services of the very best as the source is approached. At 160 people."

the point of maximum volume in 163 The system of grouping listeners quiries in the immediate neighbour | 15.5 into organized bodies, she added, hood then

reveelal the particular 18.95 was vitally important. It greatly to the advantage of the plant which is responsible for the B.B.C. that there should exist this trouble. Motors and generators, body of keen poople, willing to give

rectifiers, medical apparatus, flashi- their time and capacities to so im

portant à pièce of educational work, ing signs, lifts, tramways, and

Dary

Tr** (Hoxo Kowa) OF WORKING

The Puritan, first ship to bo equipped with the experimental. radio equipment, found

no diff- culty in carrying on a two-way con- marine station at Cleveland, while the ship was on the ground at Havana, Cuba.

Behind the scenes at the new station, watching the instrument dials, is Mr. Linwood A. Gagne of Methuen, Mass., who designed and built the station, and who is work- ing with the blimp pilota on, the solution of communication prob- lems.

The Goodyear Zeppelin engineers Icel that the research work being carried on there is of infinitely greater importance than commer. cial work. Within a very few years, commercial airships, they predict, will be flying national routes on regular schedules. Radio will play an important part in the operation of these great air liners. But there are many things about radio still to be, learned. These unknown factors are what Mr. Gagne and his men are studying. · Bome of the Problems.

7

to 6 p.m.- European programme.

Orchestra by

to 0 p.m.-A relay from the Hong

Kong Hotel courtesy of the Management, During the intervals recorded music will be broadcast from the Studio.)

to 8 p.m.-A programme of re- cords front Z.B.W.'s Library.

to 6.39,p.r.-

A Concert. Song-Wine Women and Song" (Strauss)-Mavis Bennet (So

prano),

Pianoforte Solo-"Liebestraum"

(Liszt).

23743

CENTRAL RADIO

SERVICE

KINGS BLOG

(Opp. The Perry)

RADIO EXPERTS - WORK GUARANTEED

For TONE,

QUALITY,

BEAUTY, DURABILITY,

obtain the

Pianoforte Sola-" Naila" (Do-MORRISON

libes - Dobnanji ). William Bachaur.

Chorus:(a) Vive La Compag

nie," (b) "When Johnny Comes Marching Home," (e)" There:

is a Tavern in the Town,"

--

PIANO

(Guaranteed ten years)

Harold Williams and the FOR SALE OR HIRE

B.B.C. Male Chorus. Violin Solo" Valsa Binetta "

(Drigo-Auer).

Violin Solo "Estrellita " (Ponce-Heifetz). - Jascha Hei-

fetz.

Song The Rebel" (Wallace). Song" Son O'Mine' (Wallace).

-Denis Noble (Baritone). p.m.--Stock exchange quota- tions.

6:39 to 7.25 pm--

Light Opera.

Columbia

"Tom Jones" (Selections) (Ger- H.M. man). Reg. Band of Grenadier Guards. ・・ "Merrio England"--Vocal Gems

(Hood - German). Light Opera Co. "il.M.S. Pianafore"-Selections (Sullivan) Band of H.M. Coldstream, Guarda.

"Lilac

Time"Vocal

(Ross-Schubert).

Light Opera Co.

Gems Columbia

"Yeomen of the Guard"-Bolec

at

TSANG FOOK PIANO COMPANY,

8, Des Your Road, Central

(Entrance Ice House Street) Telephone 24648.

;ן,

FAMINE DISTRICT IN PHILIPPINES.

ONLY A FEW GRAINS OF RICE A DAY.

Manila. Three hundred fami lies, consisting of approximately 800

tions-Band of H.M. Cold-persona, are affected by the famine in Umingan, Pangasinan, accord- stream Guards. 7.25 to 8 p.m.-"Sonats in Cing to an investigation of the

Minor"

(Grieg), played by

Marjorie Hasward and Una famine condition in that munici Bourne. (This Suite is by pality by a representative of the special request of a listener). American Red Cross. Many of 8 p.m.-Local time and weather the people in the famine-stricken a special type of antenna which report, etc.. must be developed, as reception is 8.03 to 10 p.m.-Chinese recorded area have only a few grains of rice now twice as good when the blimp

Some of Mr. Gagne's problems:

·"

*progranime.

a day to appease their hunger,

cording to the investigator's report,

The situation has been aggravat

is in one direction as opposed to 10 50 10.30 p.m.-A relay of t the 4,434 Mon., Wed.& Fri., 6 p.. & 2. the other; shielding the radio

Band of the 1st Bitn, of the 4,990 | 6-10 pontyoki tre 5,201 Not regular ·

South Wales Borderers, con ducted oy Bandmaster Gecks,ed by the fact that the merchants from Mount Austin Barracks, and rice dealers have stopped ex- by courtesy of the Officer Com- tending credit to starving farmers manding.

6,000 Tue, Thurs, Sat, 8pm: 6,890 Bunday midnight if des 1,143 Daily 6.30 p.m, & 11 p.m. 7BID Not regular fald 7,730 Daily 1 p.m. 8,108 Tuas. & Fri., 9 pm-1 sm. 9,230 Két regular

9,503 Not regular

9,620 FT. 8 am, Sat. 3 am, & 10'xm.

9,590 Not regular

9,077 Midnight fally

J1.48

1.4

120

710.

27.0

25.58

17.6

Bandoeng Chelmsford (England)] 6,8.W...

Manila " Schenectady.. Fandoeng Kootwijk (Holland) Bandoeng Bangkok

KLE. PLE

G.A.0. V.8.1.A.B. F.C.L HSAPI. £B.L. felbourne

BLO Bahenectady

W.2.3.A.F. 9,550 Dally 7.2.2. Eindhoven (Holland) PC... Bydney Akirobi (Kenya)

10,526 Not regialar

KIIE

W.2.1.0.

Kootwijk (Holland)

15.74

Bandoz

P.LLG. P.O.L P.L.F. H81.PL POK PLE

10,920 Daily 5.80

p.m.

Nanoy (France) Pittsburg

10,851 Billy 3 am.?”

W.B.I.K

21,540 Not regular

11,020 Midnight-8 am, daily 11,751 7.80 p. & 1 am, daly, except RATIBA Saturday and Braday 18,940 Nightly

12,850 4

4a.m. Wed., Fri., Sat.

15,102: Dally 6.80 pin, to midnight 10,004 Daily 7p.m........

17.280 Dally 8 pain, to midnight 17,761 Sundays 7 pm # midnight 18,409 Each afternoon.

[Allowance must be made for "anmmer-time" in most Burg" pean countries, which one boor ahead of trus time.)

equipment. from the electrical dis turbances of the motors; maintain- ing dependable two-way communį- cation between Akron and any air- ship within a radius of 300 miles; contact by radio with the buses | 10.30 to 11pm,-Chiness. recorded carrying the ground crews so that emergency landings could be effect 11 p.m.-Clone down. ́ed or rice versa.

Mr. Gague has been a radio de

programme,

who are already in heary, debt in view of the failure of the rice cropa this year, according to the report. Giving food relief for a short period of time will not solve the problem in the famine area, ther Red Cross investigator reported and be urged a more constrictive relief measure than the distribution of food among the people. The Red mitter is set for frequency of 3,105 Cross authorities in Manils con- Governor. - General kilowatts, but the receiver can forred with cover all bands by plug in coils. Theodore Roosevalt on the famine With the neemETADATELINGA

batteries the and a plan ang been outlined where:

votes since boyhood, and chose that has a radionone range of 40 miles branch of the service when he join- or more the equipment is in an cd the navy. He rose to be acting aluminum cused by a by 14 inches. chief operatur of the U.S.8. Den- There to four tubce for the re vur during his four years service,ceiver and four for the transmitter, and in the spring of 1931 came to all of the two solt type. The trans Akron to develop the station here. has als designed a tiny 19 pound radio receiver and transmit ter to be used by racing balloons; an important factor in the James wholers installation weighs 20 by relief will be extended to the pounds, the light weight of which Gordon Bennett races. The outfit has to be considered in equipping fomine-stricken people by provid (Continued at foot of next column.)' a 'rating balloon.

them with work.