1924-06-18 — Page 9

THE HONGKONG · TELEGRAPH;

The Famous GARNER." British-built

truck-chassis and passenger-bus.

WEDNESDAY: JUNE 18, 1924.

RADIO NOTES AND NEWS.

Simple Two-Stage Amplifier.

A

The S.S. "Telamon” arriving on the 6th. July, audio frequency amplification, oral music is one phase of his will bring us à consignment of 2 of the famous amplification. British-built

GARNER " 2-ton

equipped with pneumatic tyres,

He then faces the problem of The receiving sot of the futuro, say prominent radio ongineers, transmitting his broadcasting will be a simple three-tube cuttii programme with absolute fidolity." --perhaps single radio and single How much he loses of the origin- just double audio frequency problem which he solves through the dosign of equipmont which Therefore, the fan who plans will reproduce all sounds with- slightest doparturo such a receiver for his own usejout the truck-chassis, is certain to enjoy an outfit that from their original nature.

An essential part of such ap- will last through the various stages of changes and improve- paratus is a distortionless micro- ments now being expurioncod phone which convorts tho sound in radio. The ultradyne. the into electrical energy. Microp- monodyne, the pliodyne and many bones are extremely inefficient another "dyne" may come and and roquire that the electrical go, but there enn be-little donbt energy which they inake ́avail- July,

The amplifying system multi- three-tube reculver.

from the onargy Bus. Therefore, for the beginner, a plies the

single-tube-receiver is the safest microphone soveral billion fold Riore bofore it delivers it to the antenna If accidental noisus also but. Then, if he wants

distant reception' and use of a system. loud speaker, the next logical entor the oarlier stages of such stop in a two-stage ampliller. It an amplifying system, they may is hardly worth while adding be extremely minute and still be only one stop of amplification sufficient to utterly destroy the famous because it would still be in nature of the sound which is be

ollective for the application of aing amplified,

To overcome these the broad- loud speaker.

Ho Hook-up diagram and layout cast onginoer makes all clectrical

permanent. of a typical two-stage audio connections

makes all parts which support amplifier nro given höre,

and

The S.S. "Glensheil” arriving on the 24th. will also bring one 24-passenger British-built

and body English pattern, complete with equipped with pneumatic tyres. ́.

about

the

Before buying see us "GARNER”. truck-chassis and buses.

SOLE AGENTS:

HONGKONG & KOWLOON TAXICAB

26, Queen's Road Central,

Telephone No. 1030.

shout the survival of the simple able be greatly amplified.

CO., LTD.

RI

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EXTECTION FOR USE Put The Lan Rakes mia a beat, pour un bunione water, and who then Father

Kohne to the

Compares the teamge marthnach and thisneg The terbera, then just wa

Lux for Lace

LX je tlonely amorated with all that in delightin

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2% the esaling and preserving of dainty Jabeien, No material in have a clelightful di2m Live, and we gisa kweg a low particulars of Chantilly, knowing beat, whewest, pro think of face in general, or Chatoy en particles, yaanik mimeaga cream hun shak Tak pun og Yulak dia mermering kang sa the Tuberon në ze beauty and charm

CHANTILLY The rewar delay of Chanay

Yes the mailmang at the

mani oế chưr 18% face & Frovom it, do a large estas). kwa umder the same, the Eatingushing pecubarry of i Lane Chanlly on the set-postrel star id the "tesiar"tr

growth spooned uur ja kanun, aberas Darly, as the Puni de Parm” or the 'Fond Cheat. and it may be taken me un valachna' målene *) gre Chandir

Aves an ideal pyragaitian dua suwakɔng'anoth delightful fabrics un-Cripe qet, lime, Man

Computta l'harmeuse, Dators and Vale

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LUX

FOR DAINTY FABRICS AGENTS:

The China Soup C», LAJĄ, Shanghai Hongkong. Tientsin” Bankow Tainindu-Monkdən

IGARETTES

USGENT & HYLKS TOBACCO CO

Chesterfield cigarettes are a blend of the finest grades of rich, aromatic Turkish and smooth, mel. low American tobaccos.

Chesterfield

CIGARETTES

LIGGETT & MYERS TOBALEO Co

They Satisfy-millions!

GENERAL FORGE PRODUCTS CO. OF CHINA

SHANGHAI

Manufacturers of

BOLTS, NUTS, RIVETS, DOG SPIKES, FORGINGS, Etc.,

of every description and size.

•

Can be supplied according to

BRITISH STANDARD SPECIFICATIONS

in small or large quantities.

Delivery within two to three weeks, Samples and prices may be had on application to

SHEWAN TOMES & CO.

Sole

Apply-Import Dept. Telephone 781 Central. St. George's Building

BIBLE AND PROHIBITION.

Dutch Church of Africa Disapproves.

.

Parte for the amplifier cabinet alone are:

Two audio frequency trans-. formers, low ratio, about 4 to 1. Two rheostats, 20 ohins sael.

Two double-circuit jacks.

One single-circuit jack, Two tube sockets,

Five binding posts.

One dielectric panel. 7.by 11- inches.

One wood base, 6 by 11 inches. Bus connecting wire.

Tho singlo-circut jack may bo the one used with the single-tubo rogoivar, if that arrangement has boen made.

HOL

HOOK-UP, ABOVE, AND PANEL AND BASE LAYOUTS OF THE TWO-STAGE AM- PLIFIER.

DETEUTOR CHANGES, Following changes should be, made in the detector circuit, for the addition of the amplifier.

Double-circuit jack should bol put in place of the single-circuit jack, or the twophone connections, current-carrying conductors of Tho two inner connections of the finest grade of insulating the detector jack should be con-maturial, and he keeps his nocted to the primary or the first amplifier system warm by acti- ficial heating so that no con- transformer.

One of the outer connections of donsation of atmosphoric mois- the dotertor jack goes to the plate ture can occur.

The other of the detector tube. connection goes to the 2214-voll tap of B Battery.

Othor connections in the detoe tor clrcuit remain the sanic.

To eliminute' the influence of nearby electrical disturbances requires differont treatment. Ho accomplishes this by completely housing the entire system in un A 15-volt B battery is required absolutely continuous metallic

His to take care of the amplifier tubos, housing. microphone is both amplifier jacks being con- enclosed in a nietal vasing, His nected to the 45-volt positive and. amplifier and batteries are in a The rheostats and negative of metal-lined cabinet and all intor- the transformer secondaries are connecting conductors are on- joined to the negative of the A closed in flexible metal tubing. Battery.

There remains the problem.of Thoseconddoublo-virvalt jack is applying bis sound energy to the attached between the first and radio frequency transmitter and second stages of amplification. sending it off without the addition The outside connections join with of any noises. When he listons to the plate of the first amplifier and his station he will probably hear the positivo 43 volt tup of the Birregular crackling or crunching battery. The inside connections sounds, or musical hum, or both. go to the Pund B-plus binding posts of the second transformer. Transformers must be placed

If the former, some irregularity

in the operation of his equip mont is taking place-mechanical

at right angles to each other, shock, improper insulation, or UV201-A or C301-A vacuum moistura. Ho corrects those asi tubes may be used on this ho did in the ampliflor. amplifier and,u 20.uhm rheostat with each..

Taning is accomplished just as though there were no amplifier to the dotector circuit, excopt for the adjustment of the amplifier tubus to their highest efficiency Prohibition has boon condom by means of the theostats.

This amplifier allows for use of ed by the Synod of the Dutch

loud sponker for local Reformed Church of Bouth Africa a on the ground that

broadcasting and DX stations tip "The Synod considers Pro-to 1000 miles. hibition a wrong method for combating drunkenness, wine is a gift of God which wa OBTAINING SILENCE. may not desserate. The Scrip-

ПУ

ture. allows the individual to Noise-Elimination Process. 'abstain, as wo sdo it in the cusa

Elimination of the humn le a bit more difficult. The cauSO

harks back variably source of power,

tn

RADIO WARNINGS.

IF YOU CANNOT FEED

- BABY YOURSELF-

Give him Glaxo. He will start to grow up strong and well, because Gluxo contains just the same bone-making, brainbuilding, muscle- producing materials as healthy breast milk ¦

To wake Glaxo. Just add the required. quantity of hot water (that has been boiled) and you have ready for Baby a perfect food.

+

Remember too, Glaxo has no disease germs

in

it Your Baby cannot be troubled with the. dangers that come with ordinary cow's milk.

BUILDS BONNIE BABIES.

Claxon

#

AUSTRALIAN "MANNA."

A Fall in the West. It was recently reported in Perth (Wostern Australia) that thero had been a fall of "manna"

in- the which

they can follow definito route along the chan- nol deopened especially to make their entrarice feasible. Thie, however, requires the transmis- Devices That Help Ships, sion of a current from a cable laid at the bottom of the channel, Radio may play an important to be picked up by apparatus on part in the experiments to be shipboard. undertaken by Prof W. R. Boyle, Dlucovory of an obstruction, to the south-west of the Stato, an of the University of Alberta, for not emitting any oldotrical dis-old resident having stated that means to warn ships of the ap-charge, however, may require he had found it ever a longth of proach of land, icebergs or other the use of some sort of sounding & 20-mile ride. A parcol of it ships.

dovice on the ship, highly was sent to Dr. Ballye (general Prof. Boyle has already carried sensitive and probably made secretary of the Public Library Musoum, und Art Gallery), who his experiments to an advanced along radio-frequency lines.

Islo

ས་

·

of the Roobabitos and in Ro- When the broadcast ongineor point and is contemplating bring- Dr. Boylo has already decided said that the stuff consisted of mans xiv. and Corinthians lays out his station, he must seeing them to their conclusion, on the effectivnoss of the ap- the white woolly shells of, the. vii., but never mentions Pro- that no sounds exist in the studio with the final adoption of an paratus as regards ships and land, sugar leaf (Spondylisepis eucaly hibition as we now ano eno it." except those which he wishes to effective warning device aftor and is only undecided about its pt), a creature having a very the summor tests be will make availability against isoborgs. His wide rango throughout Australia In so far as Local Option aims | broadcast.

He makes his studio walls very on the St. Lawrence Rivor, Bolle experiments along the Labrador and Tasmania, and widoh infosted at Prohibition, tho Synod declares

Btraits and along the coast are expected to satisfy his many species of gum, such as the

Tuart and flooded gum. itself against it; but is of opinion thick and of very denso material

on this point.

Ho added that the gurious fluffy that it does fall within the scope of He lines the inside of his studio Labrador const.

Sacroby "voils the entire test, an occlesiastical meeting to give with some sound-absorbing ma-

but it is almost certain that the our-or-workS REFUSE WORK. shell was formed from an ozuda. any further opinion on a manstiro terial.

Even thon ho may-have-rotat instrument-to-be-finally-brought Four-out of five-mon sont by tion which the larva produced of a political charactor.

Professor Kuypor, who attending machinery, the vibration of out will be of some electrical the Labour Exchange having for the purpose of constructing a od as a delegate from the Roferm which gets into his sudlo through nature. That radio will play an rofused to work for the Ashby protoctivo covering. The cover od Church of the Netherlands, the vibration of the building. important part in its construction Rural Council at 6s. & day for a ing was mainly composed of wook, that sugar, and had a swoolish taste, maintained that the Prohibition Ho supports the machinery on and use is also considered forty-eight hour

authority resolved to report the and melted in the mouth. The movement had originated with elastic material, such as heavy probable...

A radio device is now beleg matter to the Exchange auth-name “manna," had been given, the heathen, and that such soots shoots of cork or rubber, and As the Gnostios were pronounted anally gets-his-studio froo of used on trans-Atlantic liners on-orities to prevent the men con to thation by the children

tering New York harbour, by tinuing to draw the doles Prohibitioniste,-Ex.

nolso,

of Austra