1932-08-04 — Page 2

Page

HONG KONG DAILY PRESS THURSDAY, AUGUST 4, 1932.

HOME-RECORDER SWITCHING.

RADIO

FEATURES

But their values are not eritical THE INVISIBLE RED

and depend largely on the resist- ance of the recorded-pick-up, and tho amount of high stuff you wish Anyone who is experimentally to cut out when reproducing. So minded and what ratio enthusiast try any components you have on isn't-will find great attractions hand before buying fresh ones. A And patentiometer with only two ter it home-recording outfit. that, quite apart from the "tan?minals in use will be ideal for the which can be had with records resistance.

mado by oneself, whether from the radio or from a microphone.

Mention of a microphone reminds mo that many are "put off" home- recording because it seems far too expensive. But you can use your cone speaker as the microphone if you have a powerful set, and if you are contemplating buying a gramophons pick-up, you need not do so if you buy a recording outfit, for the actual recorder serves this purpose as well,

A Real Time-Bavar,

i

If you trace out the circuit you

will see that one side of both the recorder and loudspeaker are con nected direct to L.T.-To obtain

RAY.

NEW USES FOR THE INFRA-RED.

THE LOWER PART OF THE SPECTRUM AS A FIELD OF FUTURE RESEARCH.

I

With the 1900's the X-ray. With

this effect the G.B.-pick-up plug the 1920's the wireless waves. Then, in the set must be joined up with a public made ultra-violet conuer- grid-bias plus, the bias being sup-ous by medicine men and sun-sear- chers and glass manufacturers. The plied by the cell on the unit.

scen Acientific eyes This, however, will not apply if 1030's have

a transformer input is used. In turning towards the other end of such a case the pick-up bias plug the spectrum, Down among the should be left in its normal posi-infra-red rays and all the mysteri- tion, but you must ace, that one ous slow vibrations that the eye side of the transformer primary cannot see but over which the scien. (the side which daca not go to the tific heart is beginning to grievo But all that by the way; what I grid-bin's cell of the unit) is joined there is a field of unlimited inves tigation. Perhaps the way of pro- up to grid-bias plus.

Let us trace the, circuit out ingress in the 1940's will bo an in the two positions of the switch, fra-red route. First we will have it over to re-

cord."

now

the

really want to write about is the bother, whether a loudspeaker is ted as the "mike" or not, of changing over all the necessary connections each time you want to. go from recording to playing. At The loudspeaker is first, before the original, novelty

"miks ** and you will see that its weare off, you won't mind, bus

"unearthed" end goes to, the high later on you will find some switch-potential side of the volume con- ing scheme highly desirable, trol. The slider of this should be And the simpler it is the better. put to maximum unless you find So I have devised a scheme which the sensitivity of the speaker wants

double-pole cutting down a bit.

will work with

接

change-over switch, or if a tone control is to bo switched in and out as well, with a three-pole changeover switch.

."

HAVE YOU HEARD THESE?

Here are lots of long-Wave and short-wave stations which 'should be ploked up by anyone 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 fav- ourable atmospheric condition. Readers are invited to add to this list should they succeed in picking up any station not in eluded in either of these lists.

31.58

Quite recently we have seen the beginnings of the new era. Long 687 distance photographs have appear-50. od showing the clear outlines of the 43, coast of France taken from the $1,8 cliffs of Dover; or far-off mountains 37,

the 85.2 at greater distances than twenty-two miles separating the 31.48 Straits of Dover, registered in de-8128 tail on a specially sensitized plate. 31. It is

light olaimed that the registered ou the plate is 'the 26.68 infra-red rays of the spectrum, the part which lies below the visible 28.86 light which the human eye regis- tore when an object is "seen."

Ready for Recording. The high potential end of the recorder now goes to the get's out put and the remaining section of the switch does nothing. Having made a record, put the switch over the other way and you are imme- ia diately ready to play it back!

LONG-WAVE STATIONS.

Ware length (Metres) Station

200 Manila 977 Shanghai 345 Tokyo

TO-DAY'S WIRELESS

PROGRAMME.

BROADCAST BY Z.BMW.

ON 355 METRES, -

PHORE

23743

CENTRAL RADIO

SERVICE

KING'S BLOG

{{Qop Shoe Ferry)

12.30 p.m.-European programme of RADIO EXPERTS - WORK GUARANTEED.

301 Sapporo

Call Kilo- Sign cycle KZIB 1,188 K.8.M.S. 1,053 J.O.A.K. 870 353 Hiroshima - J.O.F.E 860 840 355 Hong Kong Z.B.W. 337.1 Bombay

V.U.B.

840 J.O.L.K. 830 J.O.D.X. 800 1.0.0.K.

BIO V.U.C.

il to 11.30 .D.-Stock quotations. 11.30 a.m.-Chinese programme.

Columbia records.

308 Keijo

370 Nagoya 370.4 Calcutta

800.5 380 Kumamoto J.O.G.K. 190 300 Sendai J.O.H.K. 770 J.Q.A.K. 760 J.Ó.B.K.. 760

C.M.B. K.Z.R.M. 625

395 Dairen

400 Oaks

410 Canton

480 Manila

SHORT WAVE STATIONS,

STATION

CALZ BIGH

דוניס

CYCLES

Trus (Hora, Kora) or WORKING

4,434 Mon., Wod & Fri., 6 p.m. & 3. 4,000 6-10 pm.

Thars, Sat, 8 p.m.

6,896 Bunday midnight

7,143 | Daily 8.80 p.m. & 11 p.m.

7,310 Not regular

7,780 Daily 11 p.m.

4

8,108 Tues, Fri, 0 p.m.-1 sm.

9,230 Not regular

0,503 Not regular

0,630 || Dally 7 a.m.

9,620 Fri. 8 am, Sat, 3 am, & 10 a.m.

9,590 Not regular

9,077 Midnight daily

67.08

Dobintz (Germany)

A.F.K

80.12

Khabarovsk (Basila) RA.97.

Nauonw Mosco

A.G.J.

6,291 Not regular

REN.

6,000 Tues,

48.5

Home

1.M.A.

Forth

6.A.G.

Singapore

V.8.1.A.E.

89,8

Kootwijk (Holland)

P.C.L.

Bangkok (biam)

H.S.4.P.J.

Sydney

2.B.L.

Molbourne

3.L.0.

Boban ootady

W.2.K.A.F.

Eindhoven (Holland)

P.C.J.

Sydney

2.F.C.

28.5 27.8

Nairobi (Kenya) Byrney

7.L.Q.

2.M.E.

10,626 Not regular

Handocag

PLE

Chelmsford (England) 5.8.W.

Manila

K.1.XX.

13,240 Nightly-

Schenectady

W.2.1.0.

12,850m. Wed, Fri, Sat.

18,88 18.4 17.4

Bandoing

P.LG,

Kootwijk (Holland)

P.O.L.

Bandoong

P.L.F.

18.0 10.3

Bangkok

H.8.1.P.J.

Kootwijk (Holland)

P.C.K

Bandong

P.LE.

19,220 Daily 15,80–7 p.m.

16.5 13.98

Nancy (France)

Pittsburg

W8XK,

24.5

In the United States, where, as

other countrico, exhaustivo 15.74 experiments are being made with

The circuit of the arrangement is given in the diagram, and for the time being we will suppose that your loudspeaker is to be used as microphone. The two valves shown are merely for the purpose of The loudspeaker is now connect-invisible waves, it is said that a showing how the arrangement fits ed to its usual terminals and the photograph of an aeroplans two in with the circuit of the receiver.recorder-pick-up is across the hundred and twenty-seven miles The first valve V1 is the detector, volume control. The tone control away was obtained by infra-red or first amplified for pick-up work, has, now come into circuit and is rays on a foeny day. and the set's pick-up terminals shunted across this pick-up where

The Baird television process was are shown wired up direct. to the it will be very helpful in removing carried a step farther the other vaivo in the usual way. If a trans-scratch from home-made records day, when a two-way television and former is used for pick-up input, and for controlling the tone, of pro- telephone operation was carried out it will come between the pick-up fessional records. Of course, once in Paris. Telephone conversations terminals and the V1 valve, and the best setting for a certain pur-wore held between the offices of Le slight differences in the connections pose is found, it can be left ad- Matin and the Galeries Lafayette. will be necessary, but I shall dealjusted.

The speakers could see one another's with those Ister.

Volume is controlled with the expressions as they spoke. It was! potentiometer in the usual way. made possible by the use of infra-

Components Required.

The second valve V is the power or output valve of the sot, and an ordinary output filter eircuit is shown. A filter circuit is, a neces sity for the scheme so that one side of the loudspeaker can go direct to, L.T. negative.

G; D. cell.

In the circuit-diagram the radio-red rays.. gram switching of the set is omit-

manner,

No Enage.

11,020 Midnight-3 am. daily 11,751 7.00 pm, & 8 am, daily, except

Saturday and Sunday

18,102 Daily 080 p.m. to midnight 10,304 Daily 7 p.m.

17.280 Dally 8 p.m. to midnight

17,761 Bundays 7 pm & midnight

18,404 | Each sitemioon.

19,351 Daily & ..

21,640 Not regular

[Allowance must be made for **summer-time" in most Euro- pean countries, which is one hour shoad of truo time.]

THE SALESMAN'S

'SUREST AID."

SPARKLE OF MODERN ADVERTISING.

society, held at Grosvenor House.

Responding to the toast of his health, which had been given by

Mr. Austin Reed; proposing the toast of the visitors, mentioned Sir William Crawford and Sir Edward Iliffe, especially as representing the

1 p.m.-Local time and weather re

port.

1.30 p.m.-Rugby Press news, etc.

9 p.m.-Close down,

5 to 8 p.m.-European programme. ·

8 to 6 p.m.-A relay of the Hong Kong Hotel Orchestra by cour- tesy of the management. (Dur ing the intervals recorded music will be broadcast from the Studio.)

0

to 8 p.m.-A programme of

Columbia records.

é to e.33 p.m.-

:

Vocal Duet Blue Eyes-Blue

Eyes."

Vocal Duet-"Blue Eyes-Do I

Do Wrong?"-Evelyn Laye and

Geoffrey Gwyther.—9131,

For TONE, QUALITY,

BEAUTY, DURABILITY,

obtain the

"London Street Noises "--Leices MORRISON

ter Square-Beauchamp. Place, Brompton Road. Actually re- rorded with explanation by Commander Daniel.--9413. Band-"The Vagabond King "- Selection (Friml). - Percival Mackey's Band.-9195.

Song "Chu-Chin-Chow--The Cob- bler's Song."-Jamieson Dodds (Baritone).

Vocal Gems-"Chu-Chin-Chow."-

PIANO

(Guaranteed ten years)

FOR SALE OR HIRE

at

Columbia Vocal Gem Company. TSANG FOOK PIANO

-059.

0.35 to 6.15 p.1----

Concert Waltzes.

Hydropaten" (Gungl).. "Jolly Fellows" (Vollstedt),-- New Concert Orchestra.-1388. "Lea Patineurs" (Waldteufel). "Les Sirones" (Waldtoufel),- Reg Band of H.M. Grenadier

Guards.-94).

0.49 to 7.10 p.m.--

Operatic.

Song "The Marriage of Figaro --Oh, Come; Do Not Delay " (Mozart). Bella Baillie (Sop- rano),-9373. Orchestral Il Trovatore

Selection (Verdi).-Percy Pitt conducting the B.B.C. Wireless. Symphony Orchestra.--8185, Song "Carmen-Flower Song" (Bizet)-Arthur Jordan (Tenor)

---9204

A Concert,

tisers were dependent on the home market primarily. It was import- ant, therefore, while the national 7 p.m.-Stock quotations, etc. budget must be halanced, that the householder's own domestic budget should not be recklessly crippled. The effective purchasing power of the home market must not be allow- London, July 1-A high tribute edito fall. It was not over produc- to the paramount value of news-tion, but under-consumption, which Mr. Baird's octoviser," again, papers as a medium for announce-barred the way to prosperity. ted, as it works in the normal makes use of the infra-red raya ments and advertisements was paid Millions of our fellow countrymen which penetrate fog, for navigation by Lord Luke of Pavenham, pre- had endured hardships not of their purposes. The noctovisor is a form sident of the Incorporated Society own making, and if we preached of camera which registers the ap. of British Advertisers, and chair-and acted optimism for six months, To make records of radio, instproach of ordinary navigation of Bovril, Ltd., when pro- he believed the whole atmosphere put the radio-gram switch on to lights that to the normal eye or aiding yesterday at the thirty- would be changed. Apart from the loudspeaker and radio;" and the over to reapparatus would be invisible in a second annual luncheon of the record "pick-up" the components cord." For all reproducing of refog. It is fog, that bane of travel required are a three-polo change cords and work with the "mike," lers on sea or land, which is our over switch, a 1-meg. volume con- the radio-gram switch on, the set of the chief incentives to investiga trol, a fixed condenser, and nik, of course, left on "gram."

Bir tions into the possibilities of using Francis Goodenough, Lord advertising world and the, great 7.10 to 7.45 p.m.- variable resistance, and a 10-volt If you don't want the tone con- the infra-red rays. It was becauso Lake said one heard of many forms publishing world. Tho gathering, trol part, use a D.P.D.T. switch of fog that Mr. Paul Humphrey of advertiming in these days. There he said, was the 20th century per- If desired, all of these can be and leave out the fixed condenser Macneil, an American of Scottish was aky writing, and even sky sonification of faith, hope, and mada up into a compact little unit and variable resistance and the descent, engineer and architect, shouting was threatened, and Ath-charity. Where could there be a with four terminals for joining up connections thereto. And if you delved into the mysteries of the lone talked of a broadcast Buy more living example of faith than to the loudspeaker and pick-up use a proper microphone; proceed spectrum's "underworld." After Irish" campaign, but, he conclud- those who launched on full-page terminale of the set. Tho values as follows: t.

eight years he perfected a sextanted, we have to come back to our and half-pago advertisements of given for the fixed condenser and Don't join the switch contacts by which it is a simple matter for old friends the newspapers if we hopefulness and helpfulness, where any navigator to tell his position variable resistance will generally be X and Y together, but take from a sun which he cannot ste. wish to get through. The news-could they find better examples OK.

Mr. Macneil has recently visited papers complete the contact for us than advertising consultants ↑ And England. The Admiralty has ear microphone transformer, and the ried out exhaustive tests of his all between consumer and producer." for charity, what better form could other side of it to LT. negative. weather sextant, and has now ad- Lord Wakefield was the guest of they find than the newspaper pub- Then carry on just na already de-opted it. It is shortly to be made honour, and he described generous lishers, who furnished the medium. scribed, but, of course, speaking tant depends on the use of a

in this country. In brief, the sex-advertising as true economy. "Ad. I and the space? Those three had interests that were common and into the microphone and not the special reflector which concentrates vertining is essential in-the-modern inter-dependent-

the invisible rays and Zócubes them world,”~~lé ̈said "It ̃ ̄ ̄ ̄ ̄is ̄ ̄ ̄as- Sir William Crawford. responded. loudspeaker!

on a special infra-red ray dotectonishing how many different ways toast of the chairman and the so- Mr. R. Winter Thomas gave the tor fitted with a thermo-couple. The the tiny electric impulse set up ia car-

advertisement carries its

ciety, to which Mr. Thomas Bell "If a Death Ray were over to be ried to an amplifier and the rend sage. It has added a sparkdo released in a practical form," said ing recorded on a galvanometer.

Others present included:- sprominent physicist cautiously, It is claimed for the sextant that humour are some of the advertis-

Lord Dudley Gordon, L.-Col: H it would be less unlikely to be it will find the sun under any era best methods, no our chair McDougall, Mr. Charles McDougall, found in the infra-rod region than weather conditions-whether it be man knows well. Original and Sir Edward Lifle, Sir Basil Clarke, among the upper and more rapid obscured by fog, by the blackest persistent advertising has become Mr. Philip Emanuel, Mr., Walter

the salesman's surest-aid?”:

Harrison (president of the Newn- rays of the spectrum." Meanwhile, thunder cloud-in fact as long as it is not Death-but-Life-that is the sun is above the horizon...

Presching Optimiam,

paper Society) Lt. Col. W. A Vignoles, Col. Ivor Fraser, Mr. H. dotted line" can be incorporated in aided by the uas of infra-rod-vibra Invisible rays.——— Mysteries ter

Prosperity, like, charity, began P, Gisborne, Mr. H. Dalrymple, special unit external to the set. tions: Think of the appalling los Adventuring into, the realms of The scheme is suitable for record of material, of time of life because speculative science, one's mind at home, proceeded Lord Wake Omdr. H. S. H. Ellis, Major Ire- of fogs. And watch for develop dwells on other possibilities. The field, but it need not end there, manger, Mr. Robert Owen, Mr. ing radio itens as well as for rements with infra-red rays in the Death Ray those other horrors. While export trade was tremen and Mr R-H-Palmer Misa-Bath cord-making via a““mike,

Hoxt ten yearE,

(Continued on préusuna coluis) dously important, British adver Tomlinson,-and-Mr-ALWright

•

•

to one side of the secondary of the

MAKE UP A SEPARATE UNIT·

-th

OFSET.

SPOLT

Here are the simple connections. All the components outside, the

responded to commercial life. Wit and

-

(Song

Piano Solo "Minuetin

Major" (Paderewski). Piano Solo-"Duetto"

Without Words) (Mendelssohn). -William Murdoch.-9372. Song "The Enchantresa" (Chor

COMPANY,

8, Des Voeux Road, Central,

(Entrance Ice House Street) Tolophone 24048.

UNCLAIMED TELEGRAMS.

AT THE GREAT NORTHERN TELEGRAPH Co., Las.

ADDRESSED

***

Mr. Charles Thom 2017

207, Shomshuipo Miss Sonia Franch Thos

Cook

FROM

***

Kobe

Shanghai

Antungjap

Sydney Smith c/o Sca

men Institute...

F. V. JENSEN,

Superintendent.

Hong Kong, August 3, 1832.

noff,--0368. 7.45 to 8 p.12.

Octettes,

"Rondo Capriccioso” “(Mondels- sohn, arr. Mulder). — J.H. Equire Celeste Octette. "Serenade" (Tilt).—8170. "La Serenata" (Angel's Seren- ade) (Braga).-J.H. Squire Celeste Octotte-0110,

8 p.m. Local time and weather, re-

Fort

ley and Hatton)-Muriel Bruns 8.03 to 9.30 p.m.-Chinese Studio

Concert. kill (Contralto)-9058; Violin Solo-Indian Lament" 9.30 to 10 p.m.A relay of the band,

of the 1st Battm South Wales (Dvorak-Kreiler),

Borderers, conducted by Band- Violin Solo Bourres (Sam:

-master-Gacks, from the Officer's mone)-Albert Sammons-9184 Bong-"O Vision Entrancing" (from Esmerelda) (Marzials and Thomas)-Arthur Jordan (Tenor)-9201

Piano Solo Prelude in B Flat”•

(Rachmaninof).

Piano Bolo "Polichinello" (Rachmaninoff)-Leff Pouish

Mess, Murray Barracks," by courtesy of the Officer Com- manding..

10 p.m.--Rugby mid-day Press newa. 10 to 11.30 p.m.-Chinese Studio ......Concert

11.30 p.m.-Close down, ai

All records in the above European programmes are supplied by Messrs,

(Continued at foot of next column.)—Anderson Mall Co.