1925-03-21 — Page 17

Wonderful Spring and Summer Ladies' Hats

Just Arrived.

THE HONGKONG TELEGRAPH.

Radio Notes & News.

SATURDAY, MARCH 21; 1975.

Equipment Of Broadcasting Station Told In Detall.

*

Accordingly early lu Soptember 1924 the expedition left the port. of Julianhaab, Greenland bound: as nearly as was thought probable for Battlo Harbour, Labrador.

THE MEN.

The crew in addition to the

commander was composed of thros

Fashion's latest apparatus is the collection of ed so as to have its natural firearms wore also carried. The

thought.

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of

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Hosiery for Summer Wear.

L.

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Lue is sold only in scaled parkeis-dust-proof" 1

AGENTS:-

The China Soap Co., Ltd., Shanghai-Hongkong-Tientsin Hankow-Tsinantu-Moukden

TRAVEL THROUGH

CANADIAN

NATIONAL

RAILWAYS

mon. Two of these wore cliizons) A broadcasting station consists | pull that is to say two carbon of the United States and one of a

citizen of Denmark. roughly of two distinct portions, buttons дго employed one Thoir heat, the "Llof Ericsson" the radio transmitting apparatus on onch sido of tho diaph-} and the spooch input apparatus, ragin, connected so that any dis-ospecially built for Artlo service: Наун a contributor to an tortion due to ono button will be was about 40 foot overall and drow 15 1/2 feet of water. It is thought exchange.

countoracted by that duo to the Tho radio transmitting other. The diaphragm is strotch. about two month's supplies and wero experienced seamen alectrical machinery. motors frequency above tho range of fre- grow gonorators, valves, ote, which quenoles encountered in speech but had no Aratio experience,

Once after leaving the expedi supply electrical Warod of and music. As no mouthpiece or high froquoney to the station other description of collecting tion was seen off the coast of southern Groouland but after aurial and enable this norial to horn is employed with this trans-that no traco was over found. distributo these waves into space. mitter it is capable of picking up few weeks ago the United Thoso olectrical

Bro sounds from a WAYOR

wide range of Staton government sont gonerated at enormous frequency, directions and also from consider. usually in the ordor of a millionable distancos. por second, and supposing those

ELIMINATION OF JARY.

into cruisor

the

Arotic ro- glons and for about three weeks waven to be depicted graphically, Owing to the requiremont that this ship with thros airplanes searched ́93,000 squaro miles of the distance between the crest of the transmitter shall pick up the ocean and Baffin Bay with- two wavon would reprosont the weak sound from considerable

in-out a trace of the lost expedition. "wave length" of the station; distancos, restrictions aro

The latest attempt to locate thus Д broadcasting, station posed on the mounting which having, a wave length of 400 have required special considers the crew was through the lonely metros, emanates waves 400 tion. It must hold the transmitter trading posts of the Hudson's metres between the creuta, The in such a way that it is protected Bay Company. These posts last smaller the wave length (i.o., the from the slightest mechanical jar winter were supplied with radio closer the creats are together), or vibration, which would cause sets by the Canadian Wosting-

house Company. the greater the frequency.

an objectionable, noise. It must It is known that at Christmas Thoso electrical wavON, aro be inconspicuous, or of a pleasing usually described as the carrier appearance and so arranged that time and at Now Year's tho WAWON, und they ara por its location in accordance with Eskimo's and trappora made a foctly rogular

the Pilgrimage to these posts to pay requiroments in form, and the

of

the factors, on account of their rapidity acoustic systoms will not be their respects to

Thus at this time it was most: they will not effect any objectionable. Tho transmittor

to broadcast a wirolosa receiving apparatus, mounting consists of a drum advantageous

messago sooking information ro- and, therofore, they cannot be shaped cage for holding the trans garding the members of the lost heard on a receiving sot. The mittor, the whole mounted on a foregoing apparatus is common dosk stand base. The drum has expedition.

The Hudson's Bay Company to most modern wireless tole- perforations on all sides which graph stations as woll as to are protocted by line brses mesh.is evon authorising its represent- broadcasting stations.

Inside the frame of the drummatives there to advance equip. The speech input equipment projecting inward aro four hooks ment, supplies and transport- ation to any of the survivors. superimposoa on those waves which ongago coil springs on the of much lower frequency, vory transmitter frame, the transmitter The Cruising Club of America is irregular in character, corres- being thus entirely suspended on aleo interested in the search and

is planning a relief expedition. ponding to the spooch, music, or springs.

SHORT WAVES.

other sounds to be transmitted. Tho amplifier consists of threo The rosult is that the carrior stages. Care has to be takon in wavo, while retaining its regu- the design to obtain good trans- larity as regards froquoney, be-mission frequency characteristic Where They Are Superior. comas distorted in shape and the from frequencios as low as 60 Superiority of short wares over crests instead of boing all the cycles up to 5,000 cycles; this long waves, ospecially in long samo hoight, vary, and a very requires special circuit arrange-distance daylight transmission, irregular line results from joining ments. The amplifier should be has been proven again by the ex- those crosts up. The wireless designed for use with either 130 perience of John K. Reinartz, the receiving sets required for use valt or 350 volt plate circuit sup-famous radio inventor, of Man- with this broadcasting, have ply, a potontionater included in chenter, Connecticut. passos through their coils, etc., the panel cut down the potential Reinartz has succeded in trans- and when this condition is roach-applied to its proper value, when mitting signals by day across the ad, the irregularities mentioned the 350 volt supply in employed. continent on a wavelength of 21 affect the tolophono receiver The filamont current for this motore

and it is the effect of those amplifier. should bo supplied F. Jones of Barkoly, Calif.; irregularities on the receiver from a 12-volt storago battery. Howitt Svotowohl of Hartley, Io.. which causes the reproduction A key just below the tubos will and William J. Leo of Winter! of spooch, music, ote. Assuro-provide for variation of gain in Park, Fla., roport to the Ameri- ing an officient receiving eat, the largo stops and a potentiometer can Radio Relay League that purity of the results depends on having 1 steps for smaller stops they heard Reinartz at the timo to spooch inpute quipment trans-A special jack panel carries all ho was making those short-wavo lating the actual sound vibrations the current measuring jacks for tosts.

of spooсn and music into exactly the set. These include filament For the last two years amatours corresponding electrical vibra- and plata circuits and also the have been trying to relay codo tions, and as it is the sound battery supply for the transmit messages across the continent, in received that the listener is inter- tors, the latter boing supplied daylight, with little success. Tho ested in, the spooch input equip-from the storage battery which tests were conducted on longer ment from the fistener's points of provides filament current for the waves than those used by Roin- view, in tho most interesting vacuum tubos. foature of tho broadcasting station

outfit.

GREAT CARE NECESSARY. Speech and music are sound of

LOST IN ARCTIC WASTES.

a most complex character, and Wireless Attempt to Communicate. great care and much experience.

Radio's greatest attempt to

is necusssary in design of spooch input appartus, and in order to locate missing persons was sturt maintain ideal conditions during ed when KDKA, operated by the Electric and broadcasting it is usual for the Westinghouse ban controlling the apparatus to Manufacturing Company, at East have an officiont loud speaker Pittsburgh, Pa., U.S.A., in com- noar him so that ho can hear pany with its three sister stations, through the apparatus the quality broadcast messages dostiued to be of the transmission, and make picked up by mombors, or those adjustments and control the outfit knowing the whereabouts, of the from the speach input equipment, ill-fatod Nutting expedition now The loud speaker with its neces-swallowed in the Arctic wastes.

Immediately following their ro- enry valvos, etc., is known as the monitoring circuit.

gular programmos KDKA at East The speech input equipment, Pittsburgh, Pa., WBZ at Spring- comprises sonsitivo microphanos field, Mass., U.S.A., and KYW at for picking up the speech or music Chlongo U. S. A. eout out the to bo broadcast, together with a first messages into the northland who might have Vacuum tubo amplifier by asking any

Dang

of which tho elec-heard, particularly those living. trical impulsos corning from on the eastern coast of Ballin the microphone are magnified to land, to send in information 10- This n suitable volume before being garding the expedition.

message was ropostad applied to the radio transmitting samo apparatus. In addition to theso sovoral times thoreater in the basic units the equipment in endeavour to find a trace of the This broadcast is eludos devicos for controlling and survivors. monitoring the operation of the regarded as romantic an attempt amplifier in

the to obtain data on conditione in standard of reproduction of the the arctic regions as was over

order that

CANADA Epeech of music may always be attempted,

on your way HOME.

The New route of CANADIAN NATIONAL RAILWAYS' offers the best opportunity of seeing the wonderful scenic attractions of this Dominion. Dally all steel luxuriously furnished trains

VANCOUVER to MONTREAL

Highest standard Dining Car service-moderate rates. Observation cor equipped with radio on all trains. Visit JASPER-PARK and NIAGARA FALLS, Illustrated booklets and all Information. Supplied.

Asialle. Building.

C. N. R.

Queen's Rd. c. Phone C. 2004,

The expedition that is now lost, kept up to the highost level. The high quality transmitter was concoived by William Nut which is used in this equipment ting in his attempt to try and is spacially designed so that follow the course taken by the evory graduation of tone is faith-Vikings in their daring ventures fully reproduced. Special atton-to the North American continent tion is also given to features about the year 1000. His idea was! which insure an oven response to use a sailing vessel and thus over a wide range of frequencies the wind and the currents carry and an absonco of resonance him away from Norway much in. affects and variations in eff. the same way as did the small cionoy, which if presont oven to boats of those early adventurers. vory small degree would In this way Nutting thought might land on the | seriously affect the operation of ho the equipment. In this respect American continent about the

placo

did the the transmittor represents a vory same material advance on the trans- Norsomon and thus obtain the mitters ordinarily used in tole valuable data on thoir vontures: phone, service, This transmit- and perhaps the course pursued tor is of the type known as 'push after landing.

B

48

Ariz.

500

Kinds

of

Silk

Just

Here

We have just recoivod a boat ful assortment of Chinese Bilke. All qualities and colours at reasonable pricon,

LAI WAH CO., LTD.

Nos. 139 147. Dos Vaux Road, Central.

Tel. 0.2800 and 4493,

FRESH

P.O Box No. 369.

ARKIVAL

of P. W. HEYMAN'S

AUSTRALIAN BUTTER

Solc Importera:-

SIEMSSEN & CO., Hongkong & China.

Obtainable from:

The Sincere o., The heong Kwong O!! The Sun Co., The Wing On Co., and from all the leading provision dealers.

ELECTRO--PLATING.

OVER TWENTY YEARS EXPERIENCE in the Electro- doposition of Mutale in Hongkong placos us in a position to offor reliable and officient servico for the plating of articlos in Gold, Silver, Nickol and Copper,

Artistic finishes in Bronze, Antique Copper, and Oxydized Silver.

Polished and Lacquorod Brassware.

William C. Jack & Co., Ltd,

Electrical Engineers,

Tel. Central 358. Astor House Bldg., Hongkong.

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When dryness of the THROAT or irritation in the NOSE tells you that a COUGH or a COLD is impending, the time has come to tako

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THE

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