1931-02-12 — Page 2

HONG KONG DAILY PRESS, THURSDAY, FEBRUARY 12, 1931.

MUSIC FROM MANY COUNTRIES

by wireless with TELEFUNKEN 40

Long range All-Electric receiver with station selector for use with batteries. lighting inaine. Sa

or

with TELEFUNKEN

LOUDSPEAKER

ARCOPHON

RADIO

For Demonstration and further particulars apply to

SIEMENS CHINA CO.

TELE

FUN KEN

;

Office-Pedder Building, 4th Floor. Showroom-27, Nathan Road, Kowloon,

Canton Office-Shameen.

Swatow

-Gebr. Roese.

TELEFUNKEN

LONGEST EXPERIENCE-LATEST DESIGN.

ARCTURUS

The Famous Blue Tubes

For Better Radio Reception

Exclusive Features :—

LIFE-LIKE TONE-When you purchased your radio set, you expected to get clear, life-like reception. That depends on the tubes you use! The exclusive, advanced design of Arcturus Tubes eliminates. mechanical background noises-every note, every word, comes in with a vivid Life-Like Tone. With a complete set of Arcturus Tubes in your radio, you know you'll get unusually clear, brilliant prograthmes. 7 SECOND ACTION—Arcturus Blue Tubes in your radio set bring in programmes in just 7 seconds

no annoying wait for programmes to begin, Just Aip the switch, and by the time you turn the dial, the programme is there quick, certain, as compared to the usual 30 seconds, or more, wait.

*WORLD'S RECORDS FOR LONG LIFE.

Throughout the world, Arcturus Blue Tubes are proving themselves to be the tubes that have established a world's record for long life. Because. they withstand exceptional overloads that often burn out other tubes. Arcilinis Blue Tubes assure the user of long, satisfactory service.

Ask Us For Demonstration

THE SINCERE Co., LTD.

DISTRIBUTORS.

FEATURES

PRACTICAL HINTS ON IMPROVING RECEPTION.

MODERN SELECTIVITY NEEDS

UP-TO-DATE LOUD-SPEAKERS.

will come. on

Shortly the Hong. Kong Broad. crating Station the other with increased power, and, owing to this some Bets will have to be more selective Un than they are at present selective, sets are becotning un- fashionable and an effort will have to be made to increase the sharp ness of tuning. The use of an in- door aerial in place of an outdoor wire is certainly the first stop..

Points to be watched when rigging ap an indoor aerial are, listance from walls it should be well spaced nway, length of run-it should be an average length of 20ft.; the lead-in should be direct to the set Also that you have a good earth is this has a big effect on selectivity.

Pre-set Condensor.

Coil Tappings.

The best plan is to disconnect the aerial lend to the coil and twist it

round a needle. Tho.necdie can

then be prodded between the coil wirings so that it will penetrate the insulation and, a turn at a time, various positions may be tried.

a supply of current to creants the magnetic field in which the din- no langer exists, because we now phragm coil moves. This objection have permanent magnet moving-ooil loud-speakers working as simply as

sabinet conn.

A strong rival to the moving." When a position is found which coil is the inductor-dynamic loud- gives better selectivity than the speaker. This is a new development direct connection to the end of the in loud-speakers, The, inductor. coil, then bare the wire here for an dynamic is somewhat similar to the inch or so, alip a piece of paper moving-coil, but instead of a coll underacath the torn to raise the moving in a strong, magnetic field wiro and then faake a proper solder. there is a special armature system. An outstanding feature of the in- ed joint to this part of the coil.

Some coils are provided as stand-ductor dynamic is the excellent re- and with two or three tappings. It productions of bass notes, which are is not convinient to probe about in heard with natural quality., side the cabinet to alter the tap- inge, and it is a good plan to bring out the tapping points to socketa on a small strip, of ebonite at the side of the cabinet. The aerial should be connected to a wander plug which may be inserted in which

Up-to-Date Loud-Speakers,

In the set itself there is plenty to be done. If there is not a pre-over tapping is most suitable. set condenser in the aerial lend then fit pac, for that is a very simple way of sharpening up the tuning. A pre-set condenser is much better than a fixed condenser, for often you require to alter the valus dur ing reception. It is a good plan to have a pre-set condenser with

A

To simply the choico, of new loud-speaker let us take the different types available. The most popular is undoubtedly the cabinet cono. This type of land-speaker is available at all pricca. Quite good

1931 Appearance. The present-day set is distinctly different from that of sets of eigh toen months ago. If you want your act to look up-to-date you must cut down the number of controls on the panel. Your set, which has probably one screen-grid stage, has, separate tuning knobs for the aerial In and bigh-frequency condenser. addition there is a reaction control knob, an on-off switch, and one or two more filament rheostats. At first sight all may appear neces- sary. With the exception of the a maximum of about 0003 mid.quality can be obtained from a rheostat controlling the high-fre- near the set. The knob may be cabinet cone costing a little as 22. quency valve you will in most canada Blackened to reduce the serial (When I say little I do not refer be quiet anfe in scrapping the coupling and sharpen up the tuning to dollar-paid folk, with the present others. The high-frequency valve for foreign station reception. When rate of exchange £2 merna a nasty rheostat can easily be fixed at the you want to receive the local station hole in the pocket of a dollar-paid, side of the cabinet. This does not at full-strength the knob should be person.). If the listener, is extreme-involve any complicated wiring and ly restricted as regards outlay the it is a good idea to have the H.F. serowed in,

plaque or open core loud-speaker valve rheostat and the reaction con- without cabinets are cheapest and give remarkably good results.

Examine the wiring of the aerial coil and ace if the aerial, lend. goes down to the grid end, or, to an intermediate tapping. It is quite possible that if the lead goes to the grid end and if the whole of the coil is, therefore in circuit, the selectivity may be improved by pro- viding an intermediate tapping.

TO-DAY'S WIRELESS PROGRAMME.

BROADCAST BY Z:B.W. ON 315 METRES.

11 to 11.30 a.m.-Stock quotations. 11.30 am-Chinese programme, 12.30 p.m.-European programme... 1.30 p.m.-Weather report, local time, and commercial news.

3 p.m.-Close down,

3 to 8 p.m.-European programine of Columbia records supply by Messrs. Anderson Music Co.

8 to 10.30 p.m.-Chinese Studio

concert.

:

3° to 3.31.p.m.-***

Variety, Orchestral "Neapolitan Nights." The London Novelty Orch. Piccolo Duet-"The Jolly Whist- lers."Jean and Pierre Geanin Piccolo Duet-"The Language of the Nightingale."-Jean and Pierre Gennin. Xylophone, Solo-"The Squirrel

Dance."Rady Starita,

Chorus Clemantine."-Harald Williams and the B.B.C. Male Chorus:

Banjo Solo" Joy

Ernest, Jones, ....

Dance"

Pinao. Sold The House. That Jack Built "Selections-Bilý Mayerl...

Xylophone Solo-" The Woman' in the Shoe."-Rudy Starita.

5.31 to 6 p.

Orchestrál.

trol at one side of the cabinet where they are out of the way but acces sible for occasional adjustment. On Moving-Colls and Inductors,

the other side of the cabinet you Moving-coil loud-speakers have could put the nick-up switch and. rightly assumed pride of place for the on-off switch. This will leave perfect reproduction. An objection: the panel with only the tuning con- to the moving-coil was the need for | trols.

HAVE YOU HEARD THESE?

Here are lata of long-wave and short wave stations which should be picked up by anyone in Hong Kong who has a mode- rately good set suitable for re- coiving such aiguals. Success in picking up there stations also depends very largely upon fay outable atmospherio conditions. Roaders are invited to add to this list should they succeed in picking up any station not, in- cluded in either of these listo.

LONG-WAVE STATIONS.

Wave length (Metres) Station 200 Manila 277. Shanghal

Call Kilo

L

cycle

Sign R.Z.I.E.. 1,163 K.S.M.H. 1,055 280 Tientsin C.R.C. 1,070 967 310 Shanghai K.I.C. 320 Peping

C.O.P.R. D4S 870 345 Tokyo J.O.A.K. 353 Hiroshima J.O.F.K. 550 365 Hong Kong Z.B.W. 337 Bombay

301 Sapporo 300 Keijo

370 Nagoya 370.4 Calcutta

848 V.U.B. 840 J.0.1.K

630.

J.O.D.K, 890

J.0.0.K 810

V.U.C

809.0

360 Kumamoto J.O.G.E. 700

390 Sendai 365 Dairen 399 Rangoon

· 400 Osaka- 410 Canton 413 Manila

SHORT-WAVE STATIONS.

CALL BIGN

[A.F.K.. -67,65 | Dabints. (Gormany).

·00.12 | Khabarovsk (Runain). 14.07. 56.7 Nausa

J.O.H.K, TO J.D.A.K. 700 V.U.R.. 754 J.O.B.K: 760

C.M.B.

728 KZ.B.M,

TINA (HONG KONG)

OF WORKING

4434 Bon., Wed. & Fri., 0., & Jam.

4,000 &——10 p.m.

6,201 Not regular-

6,000 Tue, Thurs., Sat. 8 p.m.

6,80 Banday midnight

7,142 Daily 6.80 p.m. 11 p.m.

7,310 Not regular

7,700 Daily 11 pm.

8.103 Taos & Frl, 0 pm-1 am.

9,200 Not regulár

9,603 Not regular

9,020 V, àm, Sat, 3 am, & 10 am.

·A......

20.

Moscow 43,5 Kome

EEN.

IMA

425

Partha

aA.G

41.3 Singapore

V.B.I.A.B.

88,8 Kootwijk (Holland)

PO.L.

37

Bangkok (Binm)

HSPJ.

83.4

Sydney

Z.B.L

81.55 Melbourne

SLO.

81,48 Schenectady

W.2.X.A.F.

-0,8001'Daily f him,

i

(Sibel-

31.20 Eindhoven (Holland)

P.C..

31.28 Sydney

LF.C.

9,600 Not regular

31, COVE 278

Nairobi (Kenya)

7.1.0.

2,677 Midnight anily

2916 Sydney

Z.M.E.

10620 Not regular

Bandoong

PLE

25.69 Chelmsford (England) 6.8NY.

13,020 Midnight 3am. dally, 11,761 7.80 p.m. 4. 8 am, daily, akcept

Saturday and Sunday

24.3 Manila

Raas Schonectady

18.88 Bandoeng

X.1.X.R. W.3XO. P.LLG.

18.4 Kootwife (Holland)

17,4,Bandpeng

16.0 Bangkok -16.9.

8.1.PJ.

Kootwijk (Holland)

PAK

15.74 Bandoong 15.4

:PLE.

Nanoy (Franes)

Finlandia-Tano Pocin

lus).The New Queen's Hall Orch. BU MAAN Danse Macabre" (Saint-Saens). The Paris Symphony Orch, A Musical Jig Saw (arr. w.

Aalon)-Regal Chiema Orch....... 0.10 0.41 pam.-Children's program

me from the Studio.

6.45 to 7,05 pm-Musical comedy:

and stock quotations..." Frederica Selectiona- London

Theatre Ošéb, • st "Florodora"-Vocal gems.→→Colum.

Nahid Eizbl. Oneri Caminany,

(Luigini) By: special" request; played, by the Paris Symphony Orchestra, conducted by Pierre Chaguon

(Continued on Page 3)

40 Nightly

12,240

12,800 m. ed., Fri., Bat. 10102 Dally 6.80 pin. to midnight 10,304 Daily 7 p.m.

17.280 Dally 8 pm to midnight

17.761 Sundays 7 pm, & midnight

18,404 Enola afternoon

19,220 Daily 6.30—7. pmi 10,861 Daily 3-4-

415 B X K + 2 1540) Not regala

FAllowance must be made for "ummer-time" in most Euro- pean countries, which is one hour ahead of trae time.]

AC-SG3

Set

ENTIRELY MAINS OPERATED

A sensation in 3 valvo sets, with 1 watt undistorted output;" coough power for any moving coil or dynamic loudspeaker. A set that will appeal to you whether you are interested. în perfect quality from the local station or clear reception fron distant stations."

Price only $145.00

Tnetwling Mazla Valves (the best British Valves)

Special B ELIMINATOR for buy domestic set or made to order for any requirements.

For perfect reception

·MAZDA” Valves, large stock newly arrived

RADIO batteries made by new process minimis- ing deterioration "PERTRIX" 150, 100, 80, 45 volts and C, batteries.

Ebonite "TROLIT" and Pressed Fibre Panels cut in any size. Loudspeakers, and various parts are also obtainable.

For further information apply to:-

CANTON TRADING ASSOCIATION, LTD.

CHINA BUILDING (5TH FLOOD).

The

TELEPHONE 24610..

EVERYTHING9.6.C. ELECTRICAL

yous puaranize

COSIER FIRES

FOR COSY HOMES

ELECTRIC

Magnet

An

example from the complete range of

"Magnette. Household Electric Appliances

Irons Keules. Toasters

Cleaners Fans Fires Washing Machines Cookers, Grillers, Appliances for the Tollet etc

FIRES

MADE - IN ENGLAND'

Magnet Fire:

Current consumption or 1 units sh hour. Finished in brown, blue, green,grey or white vitreous enamel.

Sold by all THE GENERAL ELECTRIC HT Blectrical

·Dealers, Storesjele,

CO. LTD.