Page
HONG KONG DAILY PRESS, THURSDAY, JUNE 9, 1932.
";
0
FEATURES
DEVELOPMENT OF THE RADIO- GRAMOPHONE.
AUTOMATIC OPERATION AND FIDELITY OF REPRODUCTION
"ut off."
PROGRAMME.
portant quality, however, there are strument with eight 10in. or 12in. strumentis se limited in its repro-TO-DAY'S WIRELESS various properties which it is ren- peards, of any make, and once ductive range as to sonable to expert, and which can be started the amplifier will reproduce notes to perceptible degree it muş obtained without excessive expendi-a continuous programme without be considered unsuitable according
to modern standards.
tare,
!
further attention until the entire selection has been played through, The amplifier will be switched off automatically when the programme has been concluded
ed This mechanism is located on the response to
4
motor board, just under the lid of the cabinet, and is remarkably "novice-proof," Automatic record
Automatio Record Changing,
WAY OF some of the early examples of radio-gramophone construction COMPARATIVELY speaking, it is any reader of this article will re- terpart of the mechanical vibra. coud be said that the advantage rollert. a distinctive quality about tions of the needle as it travelled of record reproduction was obtained; only the other day that the man
of that over the undulating path of the rent the sacrifice of radio quality. "gramophone music" who had heard, however imperfect-
In the
of good cord groove. The "result was Case
There were several reasons for this, by, a few bars of music brendenst [ period.
electric gramophone, a costly in-" from a point in the same city wasmachines, which were relatively ex- entitled 'to' the respect accorded to pensive, the quality of reproduc-trament, but cho of greater flex and it is unnecessary to tolerate"
tion was certainly superior to that ibility than the acoustic grame- any snerifice of radio quality in the changing has extended the useful- & resourceful, pioneer. The pioneer
of the early broadenst receivers, bus phone by virtue of the fact that selection of a dual-pirpose instru-nous of the radio-gramophone con siderably, since it is possible to it could never be mistaken for any volume could he controlled and a very wide range of frequencies could
employ the instrument for dance thing other than what it was.
be reproduced.
musie without monopolising the services of an attendant. Even for ordinary home use the system has
in radio End to be resourceful, for
men
more
"
not
་
41
On
Electrical Recording.
کہیں
BY a reversal of the principle the
ment to day.
Simplicity of contral is another property we have a right to expect of the modern radio gramophone Earlier instruments comprised so
many knobs that it was a work of
obvious advantages.
4
»
BROADCAST BY Z.B.W ON 355 METRES.
report.
noties, ate. p.m.-Close down,
Eliminating Needle Scratch, MODERN radio-gramophone vir-11 to 19.30 m.--Stock quotations.
cuits are, however, design- 11.30 a.m.-Chinese programme. to limit the high-frequency 12.30 p.m.-Buropean programme of
a point below that Victor and H.M.V. records. arising from needle scratch The 1 p.m.-Local time and weather friction of the needle against the record produces a note which 1.30 p.m.-Rugby Press news, mail is much higher, in frequency, than the range of nates, we or dinarily wish to bear, so that the electrichi characteristics of pick-ups and circuits must be such as will6 eliminate the undesirable frequen cica with, inevitably, some sacrifice of musical notes rarely occurring and not, as a rule, essential to the appreciation of a musical theme.
The electro-magnetic pick-up. which takes the place of the Bound-box in an acoustic gramo- bne of the most im- phone, is pertant parts of a radio-gramo- As the first link in the phone. chain between the reverd and the human car it is charged with the task of translating the minute
cord groove into electric current physical characteristics of the re-
variations, and if the pick-up be. inefficient not the most expensive or elaborate amplifying equipment can give good results.
in all probability he would have an intricate and anlovely mass of np. puratus to handle and, as the result The recording of sound of painstaking, deliente adjusteyinders and, later, discs, as well menta, he would achieve a feat as the subsequent reproduction, de- which, though amazing enough at praded entirely on acoustic prin-
recording companies were able the time, is on, commonplace now riples, which were bounded in their
Response Curves, that the youngest member of the application by the limitations of the to adopt the method of electrical family is often the radio service, materials then available and by recording, which is responsible for jurt to tune in a station, but now'
THE ap-to-date radio-gramophont of the home.
number of mechanical difficulties, the high quality and wonderful it is common to find that one tuning
should be capable of reproduc volume control, are all that require The audible results hore a per- Many of these limitations have been fidelity of gramophone recorde to control, with a master switch and
ing a wide range of frequences. That ceptible resemblance to the retual removed during the past few years, day. It is no exaggeration to say
to be manipulated.
rendering:
could be that acoustic reproduction, can that an electrically recorded ren-
On the gramophone side develop is to say, there should be no appre- now be the medium of real enter dering of, say, a piano-forte solo, claimed. There was much muta-
can be reproduced with such fidelityment has been equally marked. ciable suppression of high notes gonism to the new science. Some tainment.
on a modern radio-gramophone as There is no occasion to wind up rogarded it A an impracticable
Electric Gramophone.
to deceive one into beleving that the motor for each record, for the and no considerable loss of base. experiment that would never hear fruis of any value. Musicians wereTHE development of broadens the instrument itself is being played turntable is actuated by an der Evm" in the present highly deve trically-driven motor which is start-inped stage of radio-gramophone receivers proceeded space, and in the room. opposed to broadcasting on yarjous
Since the pioneer days of radio ed by bringing the pick-up into technique it is inevitable that some grounds, not least of which was the within a comparatively short time distortion and inadequate reception, there was apparatas on the market and the advent of the electric playing position and stopped auto- that was the highest attainable which could be handled with con- gramophone there has been amatically at the end of the record.of the extreme limits of the musical Gramophone motors have been scale should be lont; but the effect standard in the early days of bread- siderably as difficulty, even by tonishing progress in the develop.
those whose nequaintance with thement of pick-ups, electrically-driven perfected to such a degree that the of this loss should not be percept- technicalities of the science was oftarntables, loudspeakers and other current consumption is negligible,ible to any but the critical" ear of Acoustic Gramopitane.
a superficial character,
devices, so that the modern instru.and neither mechanical nor elec- the connoisseur.
Generally speaking, auch notes as It was realised by radio engineersment, combining broadcast receiver tricul noise interferes with the re- WE had another medium of what
and gramophone amplified in one, production of the record. The most fail to be adequately reproduced on might be called indirect en-that, a part of the apparatus em. xurtainment ”—one of longer stand played in the reception of brond- is capable of results which are in no striking advance in simplification, modern instrument, whether from ton of automatic record changing,cast, are those that would not be ing and established popularity, east programmes could be applied was comparable with those of its however, consists in the introduc- gramophone record or from broud of the original work.
to the reproduction of gramophone prototypes.
On the Columbia 004, for instance, appreciated in a direct audition of The gramophone or phonograph, was
it is only necessary to load the in- the music in question. If an in- ́able to reproduce at good volume records. This section of the equip- what passed for a colourable imita- ment the amplifier was connected tion of musical and spoken enter-p to a device which reproduced in There was, as almost the valve cirenits an electrient coun-
ast telephony, with the apparatus
then available.
tainment.
ARCTURUS
LIFE-LIKE TONE
THE BLUE TUBES for every RADIO
7 SECOND
ACTION
VADIATILI MU
LONG
LIFE
ARCTURUS
THE SINCERE CO., LTD.
SOLE AGENTS.
A Conductor's Verdict. DESPITE this progress, the app-
sition of leading musicians to either form of reproduction continurd to be both definite and hitter. With the greatest sincerity, men whom the public would have hren 'glad to | hear on disc or radio protested that
radio, and gramophone reproduction. onstitute à prostitution of music and a menace to the advancement of musical appreciation.
Ong of the great musicians most difficult to convince of the musical quality of gramophones was Sir Henry J. Wood. For many years he refused to have anything to do with thein and stendfasily declined to make records. But his antugeniam was actually broken down after listening to a Columbia recording of a 'cello solo by W. H. Squire, when he declared that for the first time, the gramophone had render. ed justice to orchestral string quality..
HAVE YOU HEARD THESE?
Here are lists of long-waVB and short-wave stations which should be plaked up by anyone in Hong Kong who has a mode. rately good sat suitable for re- solving such signals. Buccess in ploking up these stations also depends very largely upon fav. ourable atmospheric conditions. Readers are invited to add to this list should they succeed in pleking up any station not in cluded in either of these lists.
Loud Speaker. SIMILARLY, however excellent. the recording, and however high the efficiency of the pick-up and amplifier, a poor lond spraker may nullify every merit. and present to the car a very pour rendering
Moving-coil, speakers have be come very popular during the past year or so, and are the standard unit in high-class radio-gramo- phones. Apart from the expensive nature of this type of speaker when Arst introduced, many people ob ierted to the preponderance, or over-accentuation, of the bass re Kilogister, which was particularly ob oyalsicctionable in the reproduction of
LONG-WAVE STATIONS.
Мате length (Metres) Station
200 Manila
"Call
Bign
KALB. 1,182 K.S.M.S. 1,083 J.O.A.K.
870 850
848
277 Shanghai 345. Tokyo 353 Hiroshima J.O.F.K 355 Hong Kong Z.B.W. 357.1 Bombay V.U.B. 840 381 Sapporo J.O:LK 880 306 Коро
370 Nagoya 370.4 Calentta
J.O.D.K. eno J.0.0.K. 810 7.U.C.
330 Kumamoto J.O.G.K.
390 Bandai
J.O.E.K. J.Q.A K.
800.9
700
770
306 Dairen
760
-400 Osaka
410 Canton 450 Manila
J.Ö.B.K.
710
C.M.B. K.Z.R.M.
720 625
SHORT-WAVE STATIONS.
STATION
CALL 8ION
From that time Sir Henry bas been closely associated with the development of orchestral recording and in view of his former adverso | attitude it is a remarkable fact that he has just delivered a dictum which places the radio-gramophone on a new pinnacle. His apprecia- tion of the instrument has led him to signify his acceptance of the Columbia as of a standard which
represents the highest achieve- 01.20 Eindhoven (Holland)
81.28 Sydney mont in musical performance to-
31. day." He amplifies his statement 28.5 27.8 by remarking "I should like to see
26.69 one in every home. Indeed, this is not an unreasonable wish, judging 24.6 by its very modest price."
Not all the mechanical and elec trical inprovements which contri- bute to the efficiency and simplicity of operation associated with the "modern"-radio-gramophone--could- rank in importance with fidelity of reproduction in any appraisement of its qualities. Given this all-im-
37.
-41-48-Babenectady
TIME (HONG Kora). OF WOLLKIND
4,424, Wet,& Fri., p.m. &.2 `n m
7,142 Daily 0,80 p.m. & 11 p.in. 7,010 | Not regular
7,730 Daily 1 p.m.
8,108 Tues. & Fri, 9 p.m.-1...
0.230 Not regular
0,508 Not regular
0,680 Dally
7 A.m
3,020 TL 6 am., Bal, 3 min. & TULE
0,500 Not regular
· D,677 | Midnight daily
€7.86 Dobinte. (Gormany) C012 Khabarovsk (Russia)
A.F.K
RAST.
4,900 || 0.10 p.m.
£6.7 10.
Nationw Mosco
A.G.J.
5,291 Not reguler
R.F.N.
6,000 Tue, Thurs., Sat., B p..
43.b *42.
Bome
1.M.A
6,896 Bunday midnight.
Perth
8.L.G.
41.0
Singapore
7.8.1.A.B.
>8.8
Kootwijk (Holland)
P.C.L.
Bangkok (Slun)
R.S.4.P.J.
35.2 Bydney
2.8.1.
31.55 Melbouras.
*LO,
W.2.X.A.F
PC.J.
LF.C.
Nairobi (Kenya) Bydaoy Bandoong Chelmsford (England) 6,6,W.
T.LO. 2.M.E. P.L R
Manila
K.1.X.E.
Sahinectady 21.75 18.88 Bandoong 34.4
W.2,XO.
F.L.G.
17.4 10.9
Kootwijk (Holland) Bandoang Bangkok 16.3 Kootwijk (Holland) 1874
Bandong Nancy (Franos) ∙188 F
Pitlaburg 13.03
2.0.1.
P.L.F.
H.8.1.P.J.
P.C.K. P.LE,
WAIK.
19,220 | Daily 5,80--7 p.m.
19,851 Daily § 10. -
21, Not regular
10,526 Not regular.
11,00 Midnight- a.m. daily
11,761 7.30 pm, & 8 am. daily, except
“Saturday and fluriday
12,240 Nightly. 19,850. Wed., Fri., Sat. 18,102) Daily 680 pim; to midnight " 10,304 Daily 7 pan.
17,280 Daily 8 p.m. to midnight 17,751 Sunday 7 pm & midnight 18,404 | Exxh afternoon.
[Allowance must be made for "summer-time" in moet Euro- pean countries, which is one hour ahead of trao time.]
speech
Probably the loud speaker was responsible for much of the hos tility radio and gramophone re- production, of which mention was made earlier in the present article. As with every section of this virile
2
8 p.m.-European programame of Victor and H.M.V. records. to 6.18 pm. An American in Paris" (George Gershwin).--- Victor
Orchestra Symphony conducted by George Gershwin.
36063/35064.
0.18 p.m.-
A Concert.
Violin Belo-Vocalise" ·(Rush-
maninoff-Press).
Violin Solo Caprice in E Flat.
Major" (Wieniawski-Kreisler). -Mischa Elman.-1364. ·
Song
Ma Curly-Headed Bab by (Clutsam).-Hulia Lashen- ska (Soprano),-1334. Piano Soler "Etude in A Miner"
(Mendelssohn).
Piano Solo-"Etude in F Major" (Mendelssohn). Sergei Rach maninof.-1200.
Song" Oh Could I But Express
in Song" (Malashkin). Song" The Blind Ploughman " (Radclyffe Clarke). Feodor Chaliapin (Bass),-1383...
'Cello
Solo--Spanish Dance' (Granados Casals) 'Cello Solo-Vito"
(Popper).-- Pablo Casals.131.1',
Continued on Page 31)
23743
CENTRAL RADIO
SERVICE
KING'S BLOG
(Opp. Skor Frity)
RADIO EXPERTS-WORK GUARANTEED
FOR
industry, the designing of loud British Instruments
speakers has developed very rapid-
ly and very efficiently. and the British Music
moving-coil unit, which was once, d
costly item, has been brought to
such a pitch of technical efficiency
British Composers
at a reasonable cost that it has been British Publishers
adopted as standard in the better- class instruments.
An Article of Furniture.
ONE direction in which the manu facturers of broadenst receivers
British Pianos
#
SED
and radio-gramophones have made OUR WINDOW DISPLAY
When FINEST COLLECTION OF EVERYTHING MUSICAL
notable advances is in the structural excellence of their models. circuits were inherently unstable it was considered necessary to dis tribute the equipment over a large area, with the result that the ap paratus of a few years ago was anything but ornamental.
The radio-gramophone now forms an elegant piece of furniture in
IN
SOUTH CHINA.
keeping with the best trend of TSANG FOOK PIANO
modern furnishing. It is, in short, an instrument which is a distinct adornment to the home and, at tho same time, a source of entertain- ment available at any hour of the day or night. The first cost is no serious matter, whilst maintenance Liao negligible a quantity that the radio gramophone will bear com. parison with any other form of entertainment.
COMPANY,
8. Des Voeux Road, Central, (Entrance Ice House Street) Telephone 24648.
{i