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40
HONGKONG
SATURDAY, JUNE
1924. (FEATURE SECTION).
GECOPHONE
A REVOLUTION IN WIRELESS VALVES
D.E.3
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RADIO, NOTES AND NEWS.
Single-Control With Sharp Signals.
What most of us want is a sim- "In general," explains Kruso Ple, sharply tuned radio receiver, "a good variable condenser la of that brings stations clearly, yet the air type and is built so that] is of comparatively low cost and loskago, must go through offora no trouble.
long paths in material that One of those is the simple, is not too thick or wido," single-control set pioturad horo.. These three colls are designed Porry Or Briggs, radio amatour, to offer little resistance," "and designed it. Add two stages of therefore sharp tuning. The amplification to it and you honvinces of the wire, the lack will have highly effofont of any varnish, the absence of recofvor that will bring in distant any tube, thoir frondom from broadcast concarte with strongth other parts of the set-all these and clarity. And there is co-operate for low loss in tuning- practically no radiation.
in broadcast programmos, T
The not consists ofthe following inaterial:
B. Kruse, technical editor of QST, ofalal publication for the
L1 and L2, primary and second-American Radio Relay Longuo, ary coils of antenna coupling.
13, tlaklor ooil,
01, variable condenser, 0005 mfd.
02, fixed mlos condenser, .001 mfd..
C3, grid condensor, no leak3, R, rheostat, G'ohn's. Vacuum tubo rocket. Two wood shafts, about 8 inches long, 1 inch wide and 3-8 inch thick...
One largo-panel, 6 by 11 inches, Two smaller panele, ono 11-2 by 4 inches, the other: 3 by · 4] inches.
Wood base, 8 by 11 inches, Fifty-five foot No. 12 D.0.0, wire,
Eleven feet No. 18 boll wiro. Seven feot No. 12. Ú. Q.-C..wire for leads.
Savon binding posts.
|
writes!
"About the worst defect of most tunors lies in the high resistance of the coils used. The resistanco Is generally in the wire at least not in the cases where wire larger than No. 16 B & B is unad, The rosistanco is in the things that are near the wire-the tube on which the wire is wound, the varnish with which the coll is painted, sometimes even tho insulation of the wire twolf.""
For this reason the calls of this sot are practically wound on air! and kept apart from other materials.
The insulating material must be good-hard rubber or molded bako lito, for instance.
Trouble from hand capacity
would be practically olimihatod
if the wire to the grid leak and
The battery binding posts are condenser comes from the station-
息
BOVO-LACTIN
The Key of Life in the treatment of gastric and Intestinal disorders.
*HE_ chief sim in the treatment of those conditions
THE
Is to throw as little strain as possible on the
digestive organs and at the same time maintain tho patient's strength and inoroase the powers of resistance, On account of its concentration, high protein content; and ease of assimilation INVALID BOYOʻLACTIN moots these indications admirably.
In cases of obstinate vomiting it is retained when all olso falin.
In tho prostration during and following attacks of diarrhoea.it acta liko à charm.
It is invaluable in the after treatment of cases of gastritio and enteritis due to the ingestion of unsuitable foods.
Other BOVO-LACTIN Preparations ¦
BOVO-LACTIN ESSENCE,
A concentrated protein propara- tion with a high vitamin content. May be taken in hot water or oold soda water.
BOVO-LACTIN GROCOLATE. The finest chocolate.power com-.
bined with Bovo-Lastin. A refreshing energising beverage.
Supplied by
Messrs. A. S. Watson & Co., Ltd., Queen's Dispensary, Coloniat Dispensary, The Pharmacy, The Chine Dispensary, The Kowloon Dispensary.
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LES ELEGANCES DE PARIS
No. 8 Queen's Road, Central. lat. Floor.
Tel. No. G386.
Tel. No. C.386
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TWINK is splendid for dyeing all the covernig
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BUMBLE
NOTED DETECTIVE'S DEATH.
•
In Charge of Famous Cases. Mr. George Marcer, who, as a chief inspector at Scotland Yard, was one of London's best-known detective officers, died at tha National Hospital in "Qucon aquaro, W.C., recently, after a long illness.
How to wind colls L2 and L3
SKETCH AND HOOK-UP OF PERRY O, BRIGGS' SET, AS PRINTED IN QST. AMERICAN BADIO RELAY LEAGUE PUBLIC. ATION. AT RIGHT, BELOW, 18 METHOD OF WINDING ĈOILS L2, AND L3,
attached to the smallor of the small panels behind the sot.
BASKET-WOUND COILS,
ary platos, and the wire, to the filaments comos from the rotary plates.
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· Solo - Arants, HONGKONG & BOUTH CHINA.
Local vaudeville artists are:
the safety of life at sea." Evon the tube sockot must be By the aid of wireless, ships can combining with local musicians The parts that make this act
of pracolain, hard rubber or essentially different from the molded bakelito to reduce resist-proceed during fogs with an ac in presenting radioprogmnimos to ordinary two-circuit tunor aro ance as much as possible. Any surate knowledge of their post-radio throughout the Dillippines. the thro cofls.
The Electrical Supply company Li is other kind of socket, like fiber or
Hons."
Wireless must play an even plané.to connect its broadcasting: antenasmolded mud, spoils the tuning, the primary of the
It will be found that careful greater part for aircraft than it station with the stage of one of inductance and Lethe secondary.
The primary consists of six attention to detail in constructions for ships, and so much so the vaudeville theatres, broads
wire of this set will rosult in exact]
that ik will become absolutely castingthe entire programms. Pro- aesential for aircraft" wound on a three-inch tube, thon and sharp tuning, with little or
grammos are broadoast Monday, turas of No. 12.D.CC.
The method whereby onoh Wednesday and Friday nights. takemoff and tied together by no troublesome radiation and ship can take bearings of any The programme broadcast from thread to make it self-supporting. | with
the simplest, cheapest transmitting sation in any part of station 1-BA Monday night in- 12, the secondary, is a baskot-
trooper in the Horse Guards; and wound' evil consisting of 40 turns † arrangement to be obtained. in the world enables many abips to foluded
In early life Mr. Morcer was a joining the Metropolitan Police 32 years ago his abilities rapidly brought him to the front.
of the same heavy wire, Foustoon steel-wire pegs or nails are not equally on a board about tha :oire" comference of a 41-8-inch eirolo. He had a spell of service at The wire is passed outside one Vino-stroot as its principal detec-peg; then inside two, and ad on tive, and scored in tracking down for 4 turns. Secure the turns. notable West-ond crimes, par with waxed throad and remove; ticularly jewel robberies. On his the windings from the pegs. promotion to Scotland Yard his
work as one of its chief dotsotive inspectors was invaluable.
many & moda. •
SAFETY THROUGH
WIRELESS.
Guiding Ships and
Aeroplanes.
determine their positions simul-1, Piano Solo Somebody Stole taneously, whereas the former My Girl By Mr. John Harris. Frestricts the use of, wireless
2. Tonor Bola-Who's Borry navigation to certain regions.!.!.
Now by Datu Maruma," of the As more and more experience is
Bavey Theatre, Plano accompani- fobtained by the navigations, re-
sulta will be very much better. mout by Mr. John Harrie
In the concluding portion of Dr. J. Robinson, the head or his lecture Dr. Robinson showed Miss Lusy Martin, of the Palace
how night errors could be elimin The tickler coll, LS, consists of the Wireless. and Photographisted, and described in detail the 12 turns of No. 185 bell ice Department at the Royal extraordinary degree of accuracy. Blues, by Mine Marcela con Solo-Blue Boosior wound like Lon 14 page in the craft Establishment at Ford with which seroplanes could beard, of the Morales Ballet Com
AVOIS LOBGES.".
domitable porseverance, with an like 1.2. enthusiasm for hard work.
The secondary coil is placed on
"
One of the most sensational
ing value of wireless telegraphy
Vocal Solo-Radio Man, by
coast and frishore stations. Mr. John Harris.
He pleaded that there was 5. Trio You've Got to Ses ont need that the results of Mamma Every Night or You tained should be made generally Can't Be Mamma At All, by Mr.,
Shrewd and resourceful, he was ciroimference of 27-8-Imah borough, lesturing at the Royal |
It in secured and guided by wireless eignals from many, Flano Accompaniments, by
of statements as to the Ipereas for ensuring the safety of ships
"That Great Britain was in buen current the crew of the Mr. Bryant Mears, and Mr. Hor. recent years was the murder of which act as shafts roschlug that facts showed b Irons Munro at Eastbourne. His from the large panel in front to
Mr.John Harring dogged tensolty was also shown the larger of the two small panels she forefront of the development revessa could have been spared rey W-Wambaugh, Plano! Ad
in back of the sot. Li is stłacza of wireless navigation, and the terrible aufforings they had com In his investigations which pre to the left shaft and La to the we can claim to coded the prosvoution of Horatio right, L1 at an angle of 5 barriod the development to a Bottomloy.
casos to engage his attention in fond between the two wooden zods, and aircraft. Ho pólnied our known. Had such knowledge | Holly, latë arrival in Manila; ands
degrees, and L3 at 60 degrees in higher piton than Mr. Morcer ones figured in a relation to L2. The whole group nation during the war unrehearsed drama in-a-West of three colls should be place application. and theatro, whither he had gone about two inches from the front leave us on the track of two mon suspect, and rear panels. out of the theft of jewels worth £10,000 from an hotel bedroom.:
ONLY ONE CONTROL “Thó condenser,-which is the
He found his mon witnessing a only tuning control, on ttaferr performance, and arrested them also must be clear of all possibl Just as the curtain Fell, resistance,
to endure
MANILA
Ha
Papa Love: