1931-11-26 — Page 2

Page

HONG KONG DAILY PRESS, THURSDAY, NOVEMBER 26, 1931.

EVERYTHING

RADIO

G.E.C.) ELECTRICAL

your Quaranter

GECOPHONE ALL-ELECTRIC RADIO SETS

and

RADIO GRAMOPHONES SPEAK FOR THEMSELVES.

DEMONSTRATIONS DAILY from 11.00 am).

4:

All apparatus to the value of £5 or over can be supplied on hire purchase terms.

Free service for 3 months

G.E.C. SHOWROOM

Queen's Building,

Chater Road,

Hong Kong

sram Valves

PURITY OF TONE

ARCTURUS

ACTION

in

SECONDS

That Thess Faster Better

Tubes-To-day

A-C LONG LIFE TUBES

PENTCDL

See the New Products

TYPE 551 VARIABLE-MU TUBE

New in design.

Advanced

in principle... Efficient in performance.

TYPE PZ PENTODE

Higher power sensitivity Greater mutual conductance Larger undistorted power

output. THE TUBES WITH THE

LIFE-LIKE TONE

For Better Results, Use "Arcturus" Blue Tubes.

FEATURES

SAFETY OF LIFE AT SEA CONFERENCE

MARCONI SOUNDING DEVICE FULFILLS

RECOMMENDATION.

The figures of loss of tonnage at

Thin-Hey method

taking

BANDIT-CATCHING

BY RADIO.....

(Continued from Page 1)

Aerials are built in under the roof, while an efficient counterpoiao is provided in the metal chassis and fraanowork of the car. years ago semi-automatic aeriala on About six

the outside of the vans were in use. These, when not in action, would lie flat along the roof of the vans- they were composed, of five strands

pearance of the Flying Squad van. been wirelessed half way across the Someone has seen the loiterers and, world at this request of some police. telephoned to the Yord, which has authority.

1.

instructed the vans by wireless.

And many erooks are still wom dering how it in done!

Radio Portraits,

Replies have been re-

egived within 4 hours.

Experiments were recently made in picture "transmission, and it is possible that within a few years.

Although the primary object of portraits of international crooks. the Yard scheme is the efficient who aloghuted" will be trans policing of Loudon, radio" mesangea mitted across the sens. Actual are frequently sent to America, photograph, dĩ finger-prints will. Canada and "Australia, and several occasions, fingerprints have numbers as at present. --

on then be sept, and not merely. code.

s published by Lloyd's from time soundings gemoves, pue of the main to time show, when anayeed, thas causes of the the admitted disin more than half the losses are dueclination to take soundings by the to stranding. In the 1930 statistics old methods, whereby one or more for example, strundings and kind-members of the crew were taken red casualties, which are comprised from other duties and exposed to under the term ** wrecked," are the elements while the tedious of wire, about 14ft. each in length HAVE YOU HEARD THESE? the most prolific cause of Kisaster, sounding operation, was being com-By an ingenious arrangement the To such easitalties are attributable | pleted.

#

Some idea of the value-of radio

supports of the serial conld be 50 per cent of the number of

Features Exclusive to Echometer, made to rise from the prone to the steamships · End motorships lost, Although a number of Instru- upright position when required; but and 37.3 per cent, of sailing ships.ments have been produced to take these werials, besides being unsight- Those figures add considerably to soundings by the echo or reflectionly (they were called flying bed- the importance of the recommen-method, thei Marconi Sounding Desteads "), were too conspicuous for dasion of the Safety of Life at Sea | vice has important and exclusive the liking of the Squad and were Confereare that the development advantages, and it is these which scrapped. and use of, echo sounding devices are making it is popular. The should be enouraged,

first, na bas already been explain The "Margoni, Sounding Device ed, is its silence in operation, which introduces several new features in is of such great importance on sounding apparatus operating on passenger currying vessels. the "reflection system, and it has

Secondly, is oporates from an

Suddenly motor raiders amash--n: certain exclusive advantages, which accumulator, and, therefore, the West End jeweller's shop window are conspicuous in comparison with abip's dynamo need not be brought with a brick, grab thousands of older methods, and which into us when soundings are rapounds worth of jewellery and make the Echometer such an aquired. This is an important point dash away in a fast eur. A ni- tractive proposition to, shipowners to be borne in mind when the

formed policeman dasbed up, gets and navigators.

the

Advantages of Echomoter. The principal advantages of the Echometer type of Sounding Device

ture

It is silent in operation and re- sponds "immediately and ab- *iately. Its operation will not disturb the rest periods of passengers or grew,

It can be used simultaneously with the wireless direction

Ander.

1F

Only one hall fitting is required for transmission and recep- tion.

queB

may be gathered from the following incidents of how the scheme works.

A Chase.

tion of filing sounding apparatus the number and description of the on a small ship is under "considerar and telephones immediately tion, especially where it is not de direct to the Yard. In his control aired to rm the dynamos during, room the radio man hears the daylight hourA. Further, in some message and calls up the vana. In" a few seconds all the Yard vans cases, the dynamos on these ships are running on full load, and any

are receiving a incinge: those in the area affected bead for the scene, extra current taken by A

power

and those on the fringe converge operated "Sounding · Device 'over- loads the machine or makes is to cut off the fleeing bandits' car. necessary to have a new dyname. All sound their special toned hors witlyn large output, installed. The during the chase. small accimulator for the Marconi

trans-

fJ

Here are lists of long-wave and short-wave stationa' which should be picked up by anyone in Hong Kong who has a mode- rately good set emitable for re-

picking up these stations also ceiving such signals, Buccess in.

dopende very largely upon fav- curable atmospheria nonditions. Readers are invited to add to "thia- list" should, they succeed" in "

picking up any station not in. ~ cluded in either of these lists.

STATION

LONG-WAVE STATIONS.

Call Kilo

Wave longth

Sign cycle KZ1R 1,158

(Metros) Station

280 Manila 277 Shanghai E.B.MS. 1,083 348 Tokyo

J.O.A.K. 870 333 Hiroshima J.O.F.K. 850 336 Hong Kong: Z.B.W 848 367.1 Bombay

382 Sapporo 300 Keijo 370 Nagoya 370.4 Calcutta

V.UB840 J.O.LK. J.O.D.K. 800 JO.UK. 610 Y.U.C.

300:0

380 Kumamoto J.O.G.K. 790

300 Sondai

396 Dairen

400 Osaka

410 Canton 480 Manila.

SHORT-WAVE STATIONS.

CALL SIGN

87.60 Dobints (Germany) ·AF.K. 80.12 Khabarovsk (Russia) | R.4.07. 56.7 Nauon

01

J.O.E.E. 770

J.Q.A.K. 780

J.O.B.K. 750.

C.M.B. 731 K.Z.R.M. 025

TIME (BONG KONG)

OF WORKING.

4,434. Mon., Wed. & Fri, 6pm. & 2 pm

4,090 0-10 p.m."

5,201 Not regular

4,000 Tue, Thurs, Sat. 8 p.m.

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

7,310 Not regular

7,730 | Daily 11 p..

8,108 Tues, de Fri., 0 p.m.-1: n.m,

9,230 Not regular

9,303 Not regular

9,530 Daily 7

m.

0.020 Fri, 8 am, Sat. 3 a.z. & 10 m.

9,690 Not regular

A.G.J.

50.

Mosco

ILPN.

43.6

Roma

1.M.A.

6,306 Sunday midnight

12.

Parth

6.4.6.

Bingapore

V.3.1.4.B.

38.8

31.55

21.28

Kootwijk (Holland) Bangkok (Slam) Bydney Melbourne Sebenectady" Bindhoven (Holland) Sydney Nairobi (Kenya) Bydney

P.CL

·H.5.4.P.J..

*.B.L.

3.1.0.

1

W2.X.A.F.

B.C.J.

2.F.C.

7.1.0.

3.M.E,

27.8

Bandoong

P.L, R

25.53

Chelmsford (England) 5.8.W.

24.5 Manila

K.1.X.E.

28.35 Schenectady

W:2X,0.

18.68 Bandoeng

P.1.0.

18.4

Kootwijk (Holland)

P.C.L.

17,4

18.0 16.3

Bangkok

Bandoeng

P.L.F.

H.9.1.P.J.

In many cases the 'Yard cas, finds | 325 Sounding Device can be charged at itself travelling at breakneck speed 31.48 any convenient time when there is alongside the bandits' car. The 31.20 only ry hight load on the dynamo. Yard Bank their sign on the wind- 81. The Silent operation of this

screen and, revealing their identity, 28.5 The third exclusive fenture is equipment is unique among sound] that, only one hull fitting is requir. force the bandits into the kerb. ing devices. It is due to the factcd. This is about one foot in dia-Ofter there is a minor crush; a this the waves transmit through meter, and, owing to the accurate

wild scramble, a short ight and the bandits, with the booty, are on the water are produced by a small synchronisation, between transmitter at supersonic frequency, mister, and receiver, the one fitting

their way to gaol. ... they are inaudible to the not only imparts the signal to the human cur. They are imparted to water but also receives the celo the water by the projector in the from the sea bed. The work of in bottom of the ship. This consists stallation only takes a few hours of a quartz crystal between two to complete, and no further atten thick steel plates. The outer of tion or adjustment is necessary these plates, Weing made to vibrate afterwards except an annual cont by, the action of the electrical þeî paint.

charge on the erystal, imparts a Wo understand that more than wave motion to the water, directed 300 ships throughout the world now towards the sea bed. The only use this system. More than 60 power required for this operation British ships have been fitted with JS IL four-volt accumulator, and the Echometer type of Sounding there is no hammer, electric motor, Device within the last six months. or other running machinery to com- and during the same period orders pliente matters.

have been placed for approximato ly 150 of these instruments.

Simplicity of Operation,

When a sounding is required, the offer of the watch has merely to

puil out a stall witch handle LINERS SPEAK” TO

mounted in the face of the indict tox, and the depth of whter ver- tically is shows at once. 28 піз accumulator operates the instru ment it is not necessary to use the ship's dynamo when sounding, and once the set is switched on it con-

OLYMPIA.

WIRELESS SURPRISE AT SHIPPING EXHIBITION.

On other necasions suspected persons loitering in a fashionable or quiet suburb waiting an opportu (nity for a quick burglary job, "have been surprised by the sudden ap

(Continued on nézt Oolumn.).

wishes to the Exhibition from those on bold through the medium of their Marconi long-distance tele-

Office ship-to-shore telephone ser. phone equipment and the Post.

vice:

This demonstration of the quality of modern maritime telephony was impressive on account of the ro markable strength and clarity with which the voices from the Atlantio were heard at Olympia. So clear. werd the conversations that they" might have been carried on by people sitting at adjacent tables," shid one appreciative commentator." An additional felicitous signific- ange was given to the noension by Guests at the infitgural lunchéen | the fact that Sir Austen Chamber- tinues in operation, showing the held at Olympia to mark the open- Iain was also present at the luncheon depth many times a minute withing of the Shipping, Engineering and was able to convey over the unfailing accuracy.

and Machinery Exhibition re telephone circuit the grectings of Navigators have at once apprecently, enjoyed a wireless sur- the Royal Navy to the British Mer- cinted the value of operating this prise item," when Lord Webster coatile Marine. device simultaneously with the Wemyss; presiding at the luncheon," All these concerned in this inter- direction finder. When a line of roceived telephone calls from the usting demonstration of present day soundings is being taken to check Captains of the Empress of Britain efflciency in marina eommunications the ship's position, it is not neccs and the Homeric. The converas are to be congratulated on the sary to stop the sounding device tions which casiod were clearly re-success attained, for a Dr. Hele to tako a D.F. bearing. The result produced on udspeakers so that Shaw, the veteran scientist, point- is an absolutely correct check of they could be beard by all the gueste ed out in his speech which followed, the ship's position, giving true or at the lunehood. Both ships were at the fact that both ships were in compass bearings from one or more the time ploughing their way east touch in mich quick succession, and

*

THE SINCERE Co., LTD. points of land, and the depth of ward on the Atlantic and their were rendered clearly audible to

SOLE AGENTS.

water and the consistency of the Captains wife able to voice good everyone present represented no sen bed under the ship.

(Continued on next Column.) mean achievement.

Kootwijk (Holland) 15.74 Bandoong 15.5 Nancy (France) .. 13.93 Fittaburg

P.C.K

9,077 Midnight daily.

10,528 Not regular

11

11,00 Midnight--3 a.m. daily

11,751 7.30 p.m. & 8 n.. daily, except

Saturday and Sunday

12,240 Nightly

| 12,800 | 5 am. Wed., Fri. Bat.

16,102 Daily 6.30 p.m. to midnight

10,304 Daily 7p.

17,250 Daily 8 pm to midnight

17,701

Bundays 7 pm & midnight 18404) Each afternoon», 19,220 Daily 6.36-7 p.m..

PLE.

19,861 Dally 8 am.

W.8.X.K.

21,640 Not regular

H

Allowance must be made for "summer-time in most Euro pean countries, which is one hour ahead of tras time.)

Ideal for XMAS GIFTS. PILOT A.C. Midget Superheterodyne

(Lowest Price. Ever Offered.).

Skilled Radio Experts Supervision.

Free Service to Patrons

1982 Model Engineering Features

7-Tube Superhet. ';

Circuit

(Including Multi-Mu Screen. Grid...and Power Pentode Tubes.)

Hair Line Selectivity

Volume and Tone Controls

Local-Distance Switch

Pick-up Connection Moving Coil Speaker

...

THE WING ON CO., LTD.

Tax. 26871.

Sole Distributors.

Tri 20672.