Page
HONG KONG DAILY PRESS THURSDAY, JULY 21, 1932.
WIRELESS TELE PHONE FOR SHIPPING.
NEW FACILITY FOR SHIPS IN BRITISH HOME WATERS,
STATIONS TO USE ELEVEN WIRELESS COAST
TELEPHONES.
An important step in the deve lopment of wireless communication for shipping-ix annoured by the General Post Office and the Marcuni International Marine Commanien. tion Cu Lid. The Post Office hran derided to instal wireless telephant apparatus manufactured by the Marconi Company in eight more
wireless count stations in order to
ascertain the ponibilities of such
RADIO
FEATURES
All Parts of the desat Govered. MARINE WIRELESS.
The stations now to be fitted will complete a chain of wireices tele- phone stations round the coast of the British Isles so that the re- quirements of all ships in home waters will be met. The telephone transmitters to he fitted in the ecast stations have been specially designed by the Marconi Company for this service, while for use on haard ship the Marconi Company is offering to shipowners a choice of two small and compact sels. one of 330 watts power for ships requiring fairly long ranges, and
MEETING OF INTER- NATIONAL DELEGATES
IN LONDON.
Fourteen marine wireless com- panies, exploiting marina wireless in more than fifty countries, and jointly responsible for the service provided by the majority of the wireless ship stations of the world, were represented at a serics of meetings of the Comité Inter-
:
International Co-operation.
On Friday, April 22, in company with important officials of the Chamber of Shipping, the British Post Office, and the Board of Trado, the delegates were the guests of the arconi International Marine Communication Company at a dinner at the Savoy Hotel
WIRELESS ON THE NEW RADIO FIELDS
EMPRESS OF
BRITAIN.
TELEPHONE COMMUNICA- TION ROUND THE WORLD.
Mr. Henry Morgan, in proposing The Marconi wireless telephone : the toast of the Quests, referred to and telegraph equipment on the the useful work being carried out Empress of Britain," which has the by the Comité International Radio-most complete and up-to-date wire- Maritime. He stressed the importless installation of any ship afloat, ance of n spirit of co-operation he proved of the greatest value on the tween the various countries of the ship's world cruise which was con-
London at the end of April to con- while recognising the need for in covering over 36,000 miles and in- sider problems arising out of the dividuality in the administration of cluding 20 countries, International Radiotelegraph Con- each country's own affairs. He said ference, which will be held in he was sure this spirit of inter-versations were carried on with Madrid in the autumn of the pre-national co-operation would be an sent year.
TO CONQUER.
More Power Output and Twin' Speakers Arrivo-Stepping
Out on the Ultra
Bhorts,
[BY VOLNEY N, HURD.]
TO-DAY'S WIRFLESS
PROGRAMME.
BROADCAST BY, Z.B.W ON 355 METRES.
11- to 11.30 a.m.-Stock quotations. 11.30 a.m.-Chinese programme. 12.30 p.m.-European programme of recorded muzic supplied by the Brunswick House, p.m.-Local time and weather
report.
une of CO watts power for ships, national Radio-Maritime held in world in matters of mutual interest, cluded last month after a voyage! tame out of the recent Chicago 30 p.m.Rugby Press news, etc.
whose requirements will be satis fied by shorter ranges. These sets are extremely simple to use and are designed for operation by the ship's officers themselves.
At present the use of telephony will be limited to communication between ships and the const sta tions. Messages sent by telephony from ships to the coast stations will be transmitted to their destia tions on land by telegraphy. In
the
reverso
i
The Madrid Conference will con sider proposals in respect of the existing Convention and Regula tions which, signed at Washington in 1997, cover all respects of the wireless work of the world; and direction telegramas, the London meetings of the G.I.R. a. service if, established on a per-
tranmitted by landline to the coast. were held for the purpose of dis manent basis. The number of at-stations and addressed to ships cussing the many knotty technical
will he passed on to the ship by and commercial problems involved. tion thus equipped will then num-
Important progress was made, her, eleven distributed round the wireless telephony. This system is
known as "telephoned radio tele. and it is hoped that everyone in cousts of the British Jalus.
grans." For such services wireless terested, directly or indirectly, in The wireless const stations which telephony is operated on what is wireless, whether organised for will be fitted with the new equip-known as the simplex principio, safety, service, or amusement, will that is to say a switch is pressed benefit by the labours of this or- ment are as follows:-
when the subsriber is speakingganisation, whose member com- Cullercoats, North
and released when he is listening panies are working in the closest to the other subscriber. Duplex respective governments,
possible co-operation with their
wirolces telephony can only be used when there is suffijent space on board ship for two aerials to be placed some distance apart so that iwo wavelengths can be used with
Foreland,
Niton, Lands End, Seaforth, Port Patrick, Malin Head, Valentia.
Wick, Fishguard and the Humber stations are already equipped with
wirelcas telophone apparatus,
Hitherto, although wireless tele- phony has been used to a certain extent between ships at sea in com- munication with one another, wire- less communication with the shore.
l
important for not only in the deliberations of the Committee, hut in the wider field of effort which was directed towards restor ing prosperity throughout world,
the
"What's new in radio?" The 1 adswer might be, "Nothing." if we are to judge by the stories that!
manufacturers' show, The new atories from that exhibition, 4 cording to what got into the metro. politan dailies, were shining ex-i
fodder for the "radio-minded."
Publicity is of great value in de- veloping a new business, and the
Direct wireless telephone con- England, Italy, the United Statesmples of the kind that are poor of America, Canada, Australia, - Hawaiian Islands and the Philip pines, the wireless telephone ser- vices which have just been institut- ed at the last two places being in- augurated by the conversations held with the Empress of Britain.
Lieut. Col. A. G. Lee responded
Wireless telephone communica- in an entertaining speech, in which he introduced some serious remarks tion was maintained with Rugby concerning the Madrid Conference.
from the time the Empress of Colonel Lee, as Assistant Engineer-Britain left England until she ar- in-Chief at the General Post Office, rived at Yokohama and, the "abip has had charge of engineering was in touch with Ocean Gate, the matters on the British Committee American telephone counterpart of which has been considering the Rugby until she was beyond Colom- agenda for Madrid, and has put in bo. a good deal of spade work in this connection. His intimation that he would not be present at Madrid to support his proposals was received presentatives of the Governments with regret; but these feelings were
of the countries concerned inspect tempered by gratification at the knowledge that, thougir he will heed the installation. It is estimated
sent from Madrid in person, the
that altogether 200,000 people visit influence of his work will be very munch in evidence
ed the ship during the cruise.
The unrivalled capacity of the wireless telegraph installation was
The Servico of Wireless.
On Thursday, April 21, the dele- gates, at the invitation of the Canadian Pacific Steamship Com-
visited the Empress of any, Britain, where they inspected the wireless telegraph and telephone But interference. It also requires | installation, and by 'courtesy of the two land stations, one for trans-General Post Office, spoke by wire- mitting and one for receiving, at less telephone through Rugby to. Hayburn, referred to the integrity
some distancs from one another,
London.
1
Demonstrations of wireless tele phony were given at almost every port of call and in most cases re-
radio industry needs it. It is more than mere publicity. It is a public service in that it gives the public an analysis of the new developi ments, permitting it to make wiser purchases. However, from the Chi- ago show came nothing but reports thought of the future of radio fiom
of what different manufacturers
sules and broadcasting viewpoint.
Not a line was to be seen telling of new set developments.
The writer was unable to attend the show this year, but even sitting at a distance, viewing material that Las come from various sources,
it is quite apparent that there have been some progressive steps taken
in radio set refinement. For in- stance, a twin push" system of using power tubes instead of the familiar push-pull has been reduced to practice and successfully instal. led in receiving sets. It means that
Mr. A. Hubert, of Brussels, Pre-indicated by the fact that it kept with low-priced power equipment,
aident of the Comité International Radio-Maritime, in proposing the tonst of the Chairman, Mr. F. S.
Continued on next Column.
has, except for its use on large facilities which are not available HAVE YOU HEARD THESE?
ships, such as the Homerie and Em- press of Britain, heen limited, for
and would be too costly for coust station work.
all practical purposes, to ships
Simplex telephony on the other carrying wireless telegraph a hand can be carried on with one paratus and using murse code tele-wavelength and one aerial systemą,
graphy.
and it has been found adequate for
Simple Wireless Telophone Sets för mibst mobile services. It is the
Ships
system used for communication with
aircraft and harbour services and
on all ships, except lurge liners,
It has been felt for a long time that simple wireless telephone sets such as those used by fishing and which carry elaborate equipment whaling vessels in communication for communication with Rugby. with one another, and operated There are certain dificulties in by ship's ouers, offered a valu- linking up simpicx wireless tele- able medus of inter-ships and ship phony from moving stations to the to shore communication for many land line telephone system to en other chases of vessels. Shitis, uble, calls to be put through to any for instance, which would not be subscriber; but it is intended to justifical in fitting wireless telegraph
Carry out experiments to see how installations, and which are not re-
far these can be overcome quired by law to do so, would'
Advantages of the New Service, benefit very greatly from having simple means of wireless communi- cation which could be operated with a minimum of trouble and
expense.
37.
Here are lists 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- ceiving such signals. Buccess in picking up these stations also depends very largely upon tay- ourable atmospheric conditions. Readers are invited to add to this list should they succeed in plóking up any station not in oluded in either of these lists."
LONG-WAVE STATIONS.
Ware length
(Metros) Station
960 Manila 277 Shanghai 345 Tokyo
Cail Kilo- Sign cyole KZ.L.B. 1,153
K.S.M.S. 1,083
J.O.A.K. 870
383 Hiroshima ` J.0.F.K. 250 355 Hong Kong Z.B.W. 816 357.1 Bombay 381 Sapporo 268 Keijo 370 Nagoya
370.4 Calcutta
V.U.B. J.O.LK. J.O.D.K. J.0.0.K Y.U.C.
840
620
820 810
380 Kumamoto J.Q.G.K. 790 390. Bendri J.O.H.K. 170 395 Dairen J.Q.A.K. 760 400 Osaka . J.O.B.K. THO 410 Canton C.M.B.
K.Z.R.M. 625
480 Manila
SHORT WAVE STATIONS.
BTATION
CALL SIGN
Ts (Horo Koso)
"OF WORKING
4,434 (Mon, Wed ¡4 Fri,, 6 pan. & 2 .m 4,090 (6-10 p.m. 5,291 Not regular
7,730 Daily 1 p..
8,108 Tues. & l., § p.m.-1a.m.
tregalar
9,590 | Daily 7 1.m.
9,630 Fri, 6am Sab, B; mm; &-10 am-
9,590 Not regular
9,077 Midnight daily
€7.08
66.7
50
Dobints (Germany) A.F.K Khabarovsk (Kusala) R.A.VT.
A.G.J. Naud Morco
LEN.
6,000 Tues., Thura, Est., 8 p.m.
43.5
312
25,53
24.0
Bome Porta Singapore Kootwijk (Holland) Bangkok (diam) Bydney 81.66-Melbourne.
W.2X,A.F. Bohenpolady Eindhoven (Holland) P.C.J. Sydneydd
LF.O. Kairobi (Kenya) 7LO. Bydway Bandoeng Ohelmsford (England) 6.8.W.
IMA
6,898 Bunday midnight
BAG.
V.S.1.A.B.
7,810 Not regalar
7,148 Daily 3.80 p.m. & 11 pin
F.C.L
154PJ
F.D.L.
9,880 Not regular
9,508 Notr
2.ALE. PLE
10,520 Not regular
Manila
Bohenectady Bandogug
P.LG.
108
1874
Kootwijk (Holland)· Bandoeng 17.4
Bangkok Kootwijk (Holland) Handoeng Nancy (France)
P.C.L.
P.LV.
HB.I.P.J, P.C.K PLE
10351 Daily 8 mm.
Pittsburg
W.8,IK
21,540 Not regular
great value of the new ser vice will be that ships which have not hitherto been equipped with 12 wireless, such as vessels engaged in 38.8 The opportunity will now bo the coastal trade, and the smaller 85.2. afforded for these vessels to experi- claseca of ships which are not real.48 81.20 ence the value of such a service, quired by law to carry wireless 31.28 the General Post Ole having ar, telegraph apparatus, will be able 81.
28.6 ranged for a sufficient number of to enjoy all the advantages of wire £76 const atations to be equipped by less communication at a very mode- the Marconi Company for telephony rate cest. Now that thin facility 20.36 38.49 to test the extent to which a wire is to be provided it is hoped that 10.4 loss telephone service is likely to shipowners and masters will make 15.0 be used by shipping. If the service full use of it, and show that its proves successful during the period usefulness is such that it must be 15,5 of trial the Post Office will arrange cofile X permanent and integral part; for its continuance on a permanent
basis.
of the service of wireless communi
cation.
11,020 Midnight-8 a.m. dally 11,781 | 7.30 păm. & 8 a.m; daily, except
——————— Saturday and Sunday- K.I.XR. 18,240|| Nightly W.2LO 13,850 4-. Wed., Frly Satu
16.102 Daily 6.30pm, to midnight' 16,804 Daily 7 p.z
{Allowance must be made for
17.280 Daily 8 pm to midnight 17,751 Sundays 7,p.m &'midnight 18,404 Enola,afternoon."
19,200 Dally 5,801/ p.m.
summer-time "'- in mort Euro-
pean countries, which is one hour abond of true time.)
the Empress of Britain in direch communication with England and America throughout the cruise and that at Christmas time greetings were sent by wireless to 21 dif ferent countries from a point near Cape Gardafui in
the Indian Ocean.
and far-sightedness with which Mr. Hayburn had watched over the in terests entrusted to him, and said that though, in their relations with one another, members of the C.I.R. sometimes spoke different lang- unges, they always showed such a spirit of co-operation that they and more were becoming more
great volume with little distortion is possible, something that formerly required very expensive equipment,
*
Another, contribution to undis- torted, clear music of good volume is the triple-twin tube. This is really two tubes in ons, using direct coupling; that is, a coupling which oan introduce no distortion at any ordinary frequency. This tube gives the equivalent of a 250 tube output but requires only the same voltage
as the former 245 tube. Because it
is two tubes in one, it he a tre- mendous amplification factor and will give a much greater signal build-up than the Pentode of lost
2 p.m.-Close down.
3 to 8 pm-European programme. to 6 p.m.-A relay of the Hong Kong Hotel Orchestra by courtesy of the Management. During the intervals recorded music will be broadcast from the Studio.)
6 to 8 p.m.-A programme of Victor
and H.M.V. records.
e to C.43 p.r.-
Operatiď.
SungGotterdammerung Hear
ken with Heed to What I Teil. Thee" (Wagner).
Song "The Rhinegold-Yield It, Wotan" (Wagner).-Ernestine Schumann-Heink (Contralto).—
7107.
Band
fele
Band
Selections from Nefisto- (Boito, arr. Creators). Mefistofele -
(Boito, arr.
71
Prologue Creatore).-Crea-
tore's Band.-35971.
Vocal Duct "Meistersinger-See, Ev'chen Where, methought, can "She be?" (Wagner), ... Vocal Duet Meistersinger-A Shoemaker's life is aye-full of care!" (Wagner). — Elisabeth
(Continued on l'age 10.)
For TONE,
QUALITY,
BEAUTY,
DURABILITY,
obtain the
closely identified with one another. year's fame. It also requires pone MORRISON
of the trick, circuit arrangements Marine Wireless Company were
dealing with an application of radio of the Pentode in order to get pure quality. The tube is made by I electricity which was of paramount Cable and promises to be used ex-
importance. Marino wireless wua tensively in new acto.
Another feature which bas come
of two speakers; one for low notes in in a small way has been the use
and one for high, as discussed by
the eldest daughter of the wireless industry, and it had the important duty of maintaining the essential and irreduciblo requirements of the writer in these volumns a year safety of life at sca Lo forego Age. Truly capablo power, tubes. any of these requirements would mean much finer quality than any- be to imperil the lives of their thing that has been heard in the
plus this twin speaker arrangement,
PIANO
HUOM!
(Guaranteed ten years)
FOR SALE OR HIRE
fellow ercatures who worked and pust in the sets of manufacturers TSANG FOOK PIAND
travelled on the sea.
Not only were the marine wire- less companies developing the wire- lesa service as such, protecting the lives and property of thase who went down to the sca in ships and administering to their comfort and pleasure, but they were also deve loping many new devices which, by pressing the latest scientific dis- coveries into the service of naviga- tion, gave valuable and valued help to the navigator in his difficult and responsible, task.
Mr. F. S. Hayburn responded in witty and entertaining specch. He likened the work of the C.I.R. to the British Commonwealth of Nations, which formed a united Empire although each particular unit administered its own affairs in its own way. The members of the CIR, he said, co-operated in carrying on the traffic of wireless communication at ses on behalf of their clients, the travelling public, and those, who followed the sea for a living and their great aim and object was to do this work for the bencât of all concerned, and not for any one particuler class or-in-
torost.
now using this arrangement...
*
National's Ultra Short Work, Short waves are not being d- cussed a great deal at the present, tine, but in the meantime their
theg ultra short | nowest relatives waves, has bocu Hpidly coming to the fore. While amateurs have been playing with there it has taken the attention of television to focus at tention on them
These waves combine the indali": tics (of hoth light, dnd radio waves and have tramendous possibilitjen They are not affected by static, they are easily directed and, due to the fact that they do not go beyond the horizon, the same waves can be used over and over again in loca tios noh more than. 100 miles from each other.
PUNTA 1940
COMPANY
Jes Veox Road, Central,
(Entrance, Ice House Street) Telephone 24848.
23743
CENTRAL RADIO
SERVICE
KING'S BLDG
We have had numerous inquiries. about these waves, but they are so new that practically nothing has been printed about them, partien- larly from a populan,, viewpoint, Thus it was a real pleasure to find in our mail of yesterdaya hew manual of ultra short waves entitled" | RADIO EXPERTS - WORK GUARANTEED
Below Ten Meters."