1930-07-17 — Page 2

HONG KONG DAILY PRESS, THURSDAY, JULY 17, 1930.

PADIO

FEATURES

CHOOSING A RECEIVER.

POINTS TO CONSIDER BEFORE INSTALLING.

The selection of a suitable re-

(BY COHERER.")

When speaking of a trouble-free receiver one naturally brings to mind the all-mains set, whereby power is supplied by plugging in to

ceiver is apt to present something of a problem to those about to em- bark on radio entertainment for the first time. A few remarks as to the principal points to bear in mind when making a choice should be of interest to both, the Olding and charging troubles. Hand" and the novice.

In Hong Kong we are remark- ably fortunate in having almost as wide a field for selection" as any town in Europe or America, and there are now on the local market sets to suit every need.

Home-Constructed Sets, It is not proposed to discuss in this article kits of parts or circuits for home construction. Those who contemplate buiding their own sets undoubtedly do so with confidence in the design on which they are working.

The average requirements of those installing their first receiver are not very ambiticus, and trouble free reception of the local station

is all that is usually asked.

Sets for Local Reception. Sets answering these needs are obtainable locally from the simple one-valve headphone set, costing not more than 880, to an elaborate est of seven or eight valves costing

seca or more.

The

any convenient electric-light socket, thereby dispensing with bat teries and their attendant replac

One-Dia! Tuning.

Simplicity of control is another point much sought where radio has no further interest than the music it can provide. One-dial tuning now incorporated in the majority of manufactured sets where ex- treme range is not required, and for the ordinary broadcast range of 200 to 500 metres sufficient selecti- vity is possible with this method.

has considerable patience and a degree of enthusiasm sufficient to transcend the etherial shortcomings in the way of interference; greater satisfaction from an entertainment point of view will result in con- fining one's activities to reception of the nearer stations.

Hong Kong is not very favour- ably placed for alternative pro- grammes, and unless a good short wave set is employed very little short of Manila (under favourable conditions) is possible.

Short-Wave Sets.

For short-wave working the all- maine set must be ruled out of the Foalms of practicability. Fluctua tions in pins supply and the

TO-DAY'S WIRELESS PROGRAMME.

BROADCAST BY Z.B.W. ON 335 METRES.

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

programme. T

10.30 to 1.20 p.m.-Mid-day Euro- pean programme of Columbia records selected and supplied by MessrAnderson Music Co. 1.30 p.m.-Weather report and local time Mid-day programme con- tinued.

6

pmClose down.

to 6.30 pm-Children's pro Kratome. Auntie Pat, Uncle Dick and Uncle Jeff will enter- 'tain the children.

6.30 to 8 p.m.-Evening European programme of Columbia re cords selected and supplied by Messrs. Anderson Music Co The House That Jack Built," Ray Starita and his Ambassa dors Band (with vocal chorus). "Bonny Was A Warrior; Johnny Boker" and "Tom's Gone To Hilo," Raymond Newell and Chorus with Piano. Song of the Waterfall" and "Scent of the Jasmine," J. E Squire Celeste Octette. Cochran's 1930 Revue-Selection" and "Heads Up-Selection," Piano Solo by Billy. Mayerl.

A number of listeners, especially action of the components employed Faust-Prelude" and "Faust

for the rectification and smoothing of the current cause" instability of Bat-dwellers, find it inconvenient to erect an outside aerial or earth. This need is very well catered for tuning to an alarming extent where by several local dealers who stock wave-lengths are calculated to the quite efficient frame-aerials al-one-hundredth part of a metre: though, unless installed quite close to the transmitting station, aset of at least three valves will be found accessary for loud-speaker results.

Long-Distance Reception.

A high-tension accumulator bat- tery, with a trickle charges for home-charging, is the best possible source of supply for such a receiver, and an outside aerial of good height is essential.

The latest type of short-wave

Those who seek programmes from sets, embodying screened grid high- further afield have many more frequency amplification and screen- points to consider, and unless card-unit stages are most efficient, and with a little practice the aver age amateur will fad tuning a fairly simple matter. "Coherer

EVERYTHING.E.C.) ELECTRICAL will be pleased to advise readers

your guaranice

TENACIOUS COATING"

KEEPS YOUR SET

AT PEAK PERFORMANCE

It's not the filament but the coaring

on it that counts

Osram

Valve

as to a suitable receiver on receipt

of a letter addressed to him, c/o

Valse," Milan Symphony Or chestra, conducted by Cay Lorenzo Molajali. Lighterman Tom" and It's A Beautiful Day." Harry Dearth -Baritone, with piano. "Lionel Morketon Memories,"

Debroy Somers Band.

RADIO WONDERS.

TO SOLVE MYSTERY OF

tor.

HEREAFTER.

Mr. E. T. Fisk, managing diree of Amalgamated Wireless, Limited, addressing members of the Millions Club in Sydney last

wireless communication with Mars month, said that all the talk about left him cold, but he was convinced that, in the distant future, it

would probably be found that radio would solve the mysteries of the future world and of life after denth.

The reason for this belief, he said, was that radio made use of ether waves that permeated infinita space, so far as present knowledge went, and it was probable that, .by means of these ether waves, there would be constant and reliable communication between the future inhabitants of the earth and those who had passed over the border into anether world.

Radio Motive Power.

That, however, was a matter for the far distant future. In the near- er future he was convinced it would Le possible to use radio to propel aeroplanes and ships just as are less telegraphy and telephony were carried on at present. Meanwhile, radio was proving of great assist- ance to navigation by means of direction-inding apparatus. It was no longer necessary for a ship to go blindly through a fog, as radio apparatus did for the navigator Come Silver Moon" and "Love's during fog what lighthouses did in Dream," Duet: Dora Labbott elear weather. An Australian in- and Hubert Eisdell with J. H.vention enabled the captain or Squire Celeste Octette.

officer of a ship not equipped with. The Skaters Waltz" and "Ay ordinary wireless to send out an Revoir One Step Ray Star-S.O.S. signal giving the name of ta and his Ambassadors Band. the ship and its approximate Hold Your Glasses With Bottom location.

Up

T

Ver

Bigger and Better-

Ella Logan,

La Golondrina" (Serradell) and "La Paloma" (The Dove), Paul Whiteman and his Orch. "To A Seagull" and "Brown Eyes I Love," Hubert Eisdell, Tenor, with piano.. Lucky Girl-Selection:" Jack Payne and the B.B.C. Dance Orchestra (with vocal trio).

.

9 p.m.-Chinese programme.

1

-300 Words a Minute.

There were great possibilities for the future of beam wireless, which

Was

now the quickest and most effective means of communication between Australia and England. It was now possible simultaneously to send 300 words a minute each way between Sydney and London. The

reason the stations were situated in Victoria was that they had to

the Hong Kong Daily Press, stat o p.m.-Weather report and local comply with certain technical and

ing briefly the requirements as to range and power.

time. Chinese programme con- Defence Department requirements,

tinued

10. 0 p.m.-Close down!

HAVE YOU HEARD THESE?

Here are lists of long-wave and short-wave stations which should be picked up by anyozS in Hong Kong who has a mode- rately good set suitable for re- ceiving such signals. Success in picking up these stations also depends very largely upon tav. ourable atmospheric conditions. Readers are invited to add to this list should they succeed in

picking up any station not in cinded in either of these lists.

LONG-WAVE STATIONS.

Call Kilo-

Ware length (Metres) Station

260 Manila" 277 Shanghai 230 Tientsin

Sign cycle K.Z.I.B. 1,153 K.S.M.S. 1,055 C.R.C. 1,070

310 Shanghai K.R.C. .967

C.O.F.E. 220 Peping

$45 345 Tokyo

J.O.A.K. 670 333 Hiroshima J.O.F.K. 830. 355 Hong Kong Z.B.W.

840 357" Bombay V.U.B. 640 261 Sapporo J.O.LK 830.. 368 Keijo

370 Nagoya

370.4 Calcutta

330 Sendai

395 Dairen

·J.O.DK... 620-

J.O.C.K. 810 V.U.C "809:0 380 Kumamoto J.O.G.K. 790 J.O.H.K. 770 J.D.A.K. 760 -784 J.O.B.K... 750 C.M.B. 139 KZR.M." -796-

398 Rangoon VUE

400 Osaka

413 Manila

410 Canton

If

and the present sites were the only. ones procurable that met both re- quiremonts satisfactorily. It was not at present possible to use the beam stations for wireless tele- phony, for, whilst the Australian stations could be so used, those in Britain could not. He was hope- ful that there would be alterations in the equipment of the beam stations in Britain soon, so that' there would be "00 additional avenue for radio telephony between

Australia and Britain and Europe.

Wireless Telephony With N.2. "It was now possible for the great" majority of telephone subscribers

Australia to speak to 4,000,000 telephone subscribers in Great Britain, and to the majority of subscribers in 14 European coun trics. The next extension in radio telephony would be between Aus tralin. and New Zealand. When that

was done the Australian stations would possibly be used to give telephonic connection between New Zealand and Great Britain. The present radio telephone systemy was the longest of its kind in the world, and the rates were one-third. cheaper than those of the New York-London .service

Speaking of broadcasting, Mr. Fisk stated that, in the future, it would be possible for Australian listeners to hear the best artists singing in the world's great centres, such as London, Paris, and New York, and later also to be able to sce the artists. Steady progress was being made with television ex- periments, but at present it was in its infancy. In Britain it was possible to receive television broad casts with a powerful receiver cost- ing about £150 at a distance not

more than 30 miles from the trans- mitting station.

T. C. C.

FIXED CONDENSERS

FOR

Accuracy Dependability

and

Long Service

THE WORLD-FAMED RADIO COMPONENTS IN GREEN CASES

OBTAINABLE AT

SINCERE'S

SÓLE DISTRIBUTORS

BUY BRITISH & BE PROUD We have just unpacked a Shipment of ALUMINIUM BASE-BOARD & PANELS. Suitable for Short Wave Receivers and other sete that require Screening.

OTHER RADIO & WIRELESS PARTS (Guaranteed. British Made).

ORIENTAL COMMERCIAL & Co., LTD. BANK OF CANTON BUILDING, TEL. 24405.

NOT A NOTE IS LOST-

So Perfect are the Reproduction Qualities LOEWE FE 63 9 tube set

ís used

MADE IN ENGLAND.

Sold by all Wireless Dealers,

Osram

Valves

with the NENANIOUS COATING

WRITE for "OSRAM WIRELESS GUIDE" (1929 Edition) Sent Ppat Fren.

SHORT-WAVE STATIONS.

STATION

CALL SIGN

KILO.

CYCLER

TIME (Hose Hose)

* WORKING

6,000 Ther., Thurs, Sat., 8 p.z.

6,896 8mday widnight

REQUIRES FRAME AERIAL ONLY WITH NEW BARIUM TUBES.

WITH LOEWE SHORT WAVE ATTACHMENT.

CAN ALSO BE USED

12.30—1.30 p.m.

5-5.30 p.m.

Daring demonstration hours expert European advice is given

67.06

Dobintz (Germany)

A.F.K.

60.12 Khabazovak (Russia)

R97

56,7 Nauen

4,434 Mon, Wed, & Fri, 6 p.m. & 2 x 4,300 | 6–10 pm.

Not regolar

50.. Moscow

B.F.N.

Demonstration Hours 11-11.30 am.

43.8

Rome

1.MA

Ferth

P.C.L

2:B.L..

42.

418

23.8

Singapore

Kootwijk (Holland)

37. Hangkok (Siam)

Bydney

31.66 Melbourne

31.18 Schenectady.

7,143 Daily 6.80p,m: & 11 p.m.

V.8.1.A.B.7,310 Not regular

-7,730 | Daily:11 pm

HS4P.J.: 8,108 Tues & Fri, 9p.m.-1 m,

8.230 Not regulat 9,503 Not regular

W.2.K.A.F. 9,530 Daily 76.5

3120 Eindhoven (Holland) B.C.J.

21.28 Sydney

31 Nairobi (Kenya)

28.6

Sydney

9,820 Tri, 8 am 8. 3am. & 10 km,

9,590 Not regular

9,577 Midnight daily

T.L.O.

2.M.E

FLE

10,520 Not regular

8. GOD (England),5,8,W

25.63

22.09

Manila

23,35 Schenectady

K.L.X.E.

W.2.X.0.

T.LO..

H.S1.E.J.

18,88 Handoeng

17.4 Bandoeng

16.9

Bangkok

16,88 Hulsen (Holland)

P.E.L

163

Kootwijk (Holland)

P.OK

16.74 | Bandoeng

PLE

18.5

Nancy (France)

13.33 Pittsburg

11,020 Midnight-3 m. daily

11,751 7.30 p.m. & 3., daily, except

12,240 Nightly

Saturday and Sunday

12,850 4.m. Wed., Fri, Sat

Op.m. to midnight

16,102 Daily 6.80

10304 Daily 7pm

17,761 Randaya 7 pm &

17,700 || 11⁄2ily 10 pa.. 18,404 Each afternoon *19,220 | Daily 50-7 pim

19,201 | Daily 8 km.

W.8.XX. 21,340 Not regular

on all Wireless matters..

Loewe R 533 A.C. set $126 without Loud Speaker, with Loud Speaker $150,

4 Gives splendid volume.

"Pertrix" High Tension Dry Batteries

150 volts, 100 volts, 60 volts and 45 volts.

s. Heavy Super Duty and Grit Batteries 9, 12 and 30 volts.

NEW PARTS, RECEIVING SETS and LOUD SPEAKERS.

CANTON

RADING ASSOCIATION, LTD.

TIKADINU

CARL SCHROTER, Manager-8TH FLOOR, CHINA - Bldg.

TELEPHONE 24610,