10
New Summer Hats
.FOR
LADIES & MISSES
New Models For
Sportswear and Dressy Occasions
Prices Very Reasonable
B & B & B XXXXXX
ALSO
A New Shipment of
Flowers Just Received.
YEE SANG FAT CO.
IMPORTANT to MEN
Send Your Felt Hats to Experts for Renovation. Yes We clean Ladies' Hats as well. Also Dresses and every kind of Fabric.
THE INTERNATIONAL DRY CLEANING & DYEING CO. 12. Wyndham Street, 148, Wong Nei Cheong Road, 36, Nathan Road,
Hong Kong,
Happy Valley,
Kowloon.
SAND-LIME BRICKS.
Best machine made bricks
Highest teats and uniform qualities.
For Economy, Quality, Beauty, Durability and
Satisfaction unsurpased.
YEE YICK SAND-LIME BRICK CO.,
CHING IU NAM.
"
Manager.
Factory: Canton. Hong Kong Office,
148, Queen's Road, West, 1st Floor. Telephone No. C.8882,
BUSINESS DIRECTORY.
Bookbinders.
THE "CHINA MAIL," Book.
binders.
No. 8a, Wyndham Street.
Dentist.
HARRY FONG, Dentist,
1st floor, No. 74, Queen's Road Contral. Tel. Central No. 125.
· Electrical Supplies.
THE GLOBE FOOK CHEONG
ELECTRICAL SUPPLY CO., LTD. 72, Queen's Road, Central.
Tel. C. 8270. •
Engineers &
Shipbuilders,
W. 8. BAILEY & CO., LTD.,
Engineers and Shipbuilders,
Kowloon Bay. New Work & Repairs,
Call Flag "L" Sole Arents for Kelvin Motors, i
Hair Dressers &
Booksellers.
LEE YEE
Ladies and Gentlemen's
Hair Dressers
and Booksellers.
No. 12, D'Aguilar Street, (opposite Queen's Theatre).
Hair Dressing Saloon.
HANSON SKEY,
Ladies and Gentlemen's
First Class
Hair Dreasers,
45, Des Voeux Rd. C., HK.
Optician.
THE CHINA MAIL,
RADIO TOPICS
P. I. RESTRICTIONS.
BUREAU OF POSTS ISSUES REGULATIONS.
SHIELD GRID TUBES.
NOTABLE INCREASE IN TONE QUALITY & SENSITIVENESS.
BATTERY LEADS.
THE DANGER OF, UNINTEN- 'TIONAL COUPLINGS.
Manila, May 12.
Sometimes, however, the fault is The following experiment was That Inter-island radlo traffic carried out with the well-known considerably more difficult to de- text. All the various by-pass will be controlled exclusively by Browning-Drake circuit, working condensere were proportioned suit- the Bureau of Posts in the future, out this receiver for use with the ably, the screening boxes fitted well and were screwed inte position, is evidenced by the new ruling of shield grid tube.
lead through the double walls of and the one high-frequency (grid) that body which stater that here- after, licences for the installation
metal separating ona tuned circuit of inter-island radio stations will
from the next continued in each case for less than half an inch Into the second can. The only other holes in the boxes were two small ones through which LT. +
be issued to private persons or
as the plate and H.T. + leads passed, and a third through which the neutralia-
This decision came as a result of the recent recommendation of the
The transformer iden wag then governor general who acted upon tried. This tube needs a very high the decision tendered him by the
I
The usual tuned plate method of transferring energy over to the next stage was used, as this gives the maximum amount of "kick." firms only if the proposed radio The regular type of antenna coll stations are to be established in was used and the secondary of the places not yet served by the In-regennformer acted
and that no impedance. This proved rathering condenser could be adjuster by Balar government licenco will be granted to any in- unstable and the need of shielding means of a slender screwdriver. became evident. This also promis- The by-pass condensers of the terests represented, controlled or
ed to be so broad in tuning that HT leads were connected to the incorporated by foreign repreken.
wire within an inch of the point it would be quite useless, as the where it entered the can, and H.T. tatives or foreign capital.
regular B-D circuit is only fairly accumulators were used to supply aclective.
the anode current. Yet, with all these precautions, the receiver could not be stabilised.
Those who like problems may Radio. Communication Board which impedance in the plate circuit due perhaps feel disposed to study the Investigated the numerous applica- to its own high impedance. A tun-diagram' and try to locate the fault before reading on. The writer ed circuit directly in the plate managed to solve the problem by a local and provincial for a franchise gives the highest impedance pos- reductio ad absurdum method. A sible at radio frequencies. The careful Inspection of a diagram to operate Inter-island stations.
extra grid in this tube, being at drawn direct from the wiring of the set itself provided convincing practically ground potential, shields evidence that the only possible the plate from the grid so that the source of trouble, apart, from the usual internal capacity is reduced possibility of insufficient screening, to a negligible amount. Thus this lay in the LT. + leads; for these were the only ones not protected tube needs no neutralisation of its by by-pass condensers.. According- ly a 1⁄2 microforud was connected, internal capacity.
In each compartment, between the This capacity has always been controlling factor in radio fre- point where the lead entered the the Bureau of Posts, was last yearquency transformer design and toolbox and the box itself. On replac appointed by the govemor generai large a primary has usually proving the screening boxes the receiv
further trouble, per- and is his advisory committee on ed Impossible of neutralisation. gave no
This tube is a happy combination mitting itself to be neutralised the short wave radio situation.per in that the very high impedance its readily, and remaining perfectly taining to inter-island radio com- plate circuit demands is offset by stable even when both aerial and
earth were disconnected. the shiolded grid.
It is clear that the LT. + leads
tions of various
concerns,
both
Board Makes Report. This board, composed of H. C. Anders, representing Malacanari, Commander Luckel of Los Banos, Major L. B. Bender, Signal officer of the Philippine departments and Gonzalo Kamantigue, engineer of
merce.
The board in its investigation,`
a
The next step was to wind a very
tralisation.
Tests Quite Amazing.
TUESDAY, MAY 22, 1928.
DAILY CROSS-WORD PUZZLE.
(This cross-word puzzle has been made by an expert hut our readers are warned to look out for occasional phonetic spellings, such as harbor, plow, and altho.)
5
6
7 8
10
12.
13
T
15
16
137
18
19
20
121
23
24
25
26
27
28
29
30
131 ₤32 133
3455
36
137
38
39
40
41
42
43
$114
145
le
47
48
N9
10
151
LOTHE INTERNATIONAL LYNDICATE.
HORIZONTAL
1-To administer
nausdove potion
6-The original aviator
-Contrition 12-Bidnny 18-Bottom of a show
(pl.) 15-Diving bird 16-Amusemant 18-Technical (abbr.) 19-Deviate. From path
of rectitude 20-Additional paymont 22-Deacon (abbr.) 23-Abbreviations for Government department in
charge of army 24-Twisted woolen.
thrend 26-N. central Stato
(abbr.)
27-To smooth 28-Josters
24-Prepooltion. 20-Provoked
HORIZONTAL (Cont.) 30-Captura 38-More carteis
30-Wore away 40-Tribe of Indians 42-Enjoin
45-Feathery flakos 44-Chairs
48-Spurlova
47-One-humped
camels
VERTICAL (Cont)
|10–Part of spácah (pl)
11-Extremely needy 12-Panted
14-A food-Rah 16-Proposition 17-Hard-shelled fruit 20-The bodily structure
(pl.)
121-Drain
24-Triumphed
|65-Lustrous 'orystallino 25-@windled
minoral
St-Privilege tax
VERTICAL
1-Glver
20-Burden
31-Container for liquida
32-Eyed
33-Induced
95-Stitchas
2-8ign of future event 37-Furbearing 'animal S-Perceive at a
distance
4-Prefix meaning
-Period of time
(abbr.)
6-Pronoun
2-Turmel?
8-Dealt out sparingly
34-Part of verb to bowl 6-Harmonized
(pl.)
39-Heavenly moseenger
|414Hinder
43-Earth
|46-Scotch for "email" 146-Ologa kimar
{mbbra}
|48-8uffix manning "one
who" 49-Preposition
SUGGESTIONS FOR SOLVING CROSS-WORD PUZZLES
Start out by filling in the words of which you feel reasonably sure
• will give 'veu a clue to other words crossing them, and they is tury to sell others. A letter belongs in each white space, words starting it the numbered squares and running either horizontally or vertically or bath.
(Tre solution of the above cross-word puzzle will appear in to-morrow's issue along with a new cross-vord puzzle.)
discovered that the majority of the high primary in the B-D transform-running through from one compart. er and after experimenting a 55.ment to another, and eartned only applications for licences came turn affair, wound of fine wire in through the valve filament and a from foreign owned concerns and a small slot, was taken as a fixed tex-ohm fixed resister,, were convey- constant. This receiver was in Ing high-frequency voltage from submitted the decision to the gevharently very stable and it did not one tuned circuit to another. To ernor general that in the interests demand any change in the placing confirm this, the experiment was of future inter-island radio deve of the coils or other parts, nor did tried of inserting into adjacent dering complaints. The active sup- compartments the two ends of a pression of oscillators, however, lopment that
these franchises it demand any shielding or no-piece of wire, employing the holes entirely a matter for the Post should not be granted.
through which the neutralising Office, which acts on Information During the past year there have
condensers were adjusted, and supplied by the B.B.C. Time-saving been a few radio stations put into The next testa were carried out bushing them temporarily with sya- and more effective working of the operation by various commercial with the completed receiver. It teflex. Provided that this wire vans might result if complaints concerns, the majority of them be- was first tried in a suburban loca-reached
than about two were sent direct to the Post Office. ing lumber companies, who have tion where only fair results hadfinches into each compartment it After tracing a "howler" the en- various camps in other parts of the been obtained with the regular was sufficient to render the receiv-gineers in charge of the van can B-D type of set, the antenna being er hopelessly unstable, but on al- warn him that a repetition may islands.
By establishing one radio set in about a 25-foot indoor affair. Tun-lowing it to touch the metal screen- mean cancellation of his receiving the home office and another in their ing it was lots of fun as the tickler ing box at any point there was in- licence. If he ignores this and re- branch station, they been able to could be carried right up to the slant return to model behaviour.peats the offence his licence might On a third occa- establish daily aerial communica-oscillating point, and away from it In making this experiment It was be withdrawn.
without that terrific squeezing and noticed that so long as the wire sion he would render himself liable tion with them and consequently marring of tone quality one usual was entirely outside the scream there to prosecution for listening with- feel that this service is better ly gets. This first tube was giv- was no sound in the telephones on out a licence. adapted to their particular needs ing excellent amplification and do allowing it to touch the cans, but
Bureau of Posts.
To Continue Short Wave.
more
*
YESTERDAY'S SOLUTION.
AS
TE EARMARK AVINGS ROL NA DASHDEN
TO
N
G
BIG TEA LIP
RUR PLAN! CIALIST RAN
INAG ANA PATROÖN DIG BIBLE È N AMITY ACE APC SPY SY OPACITY BALLAST NOR LIONIZE. SVE EI DOLON GADDERS
"OTHE INTERNATIONAL SYNYGATI.
be
than is the service offered by the ing so without being anywhere near the moment any part of it pass Singapore wireless amateurs time for months, and still finds it the oscillating point. Stations ed through the hole, a loud scratch- working a two valve set are now hard to catch up with the demand. were brought in from all around. Ing was heard every time it came in regular touch with London The reason is that the completely.
A five-foot piece of wire was into contact with the metal. This broadcasting on a wave length of self-contained set which can The resolution adopted by the connected directly onto the grid of was simply an aural indication of 24 metres, receiving the London carried from room to room appeals Bureau of Posts says in part "that the shield grid tube. Stations still the H.F. voltages induced into the programme between 2 am. and 7 very much to the man in the street, this policy which will hereafter
continued to come in. Chicago and wire when in proximity to the tun-p.m., including the Savoy Orpheans, who does not want to be bothered restrict the installation of private Atlantic City high-powered stations ed circuit and shows forcibly how and terminating with the chimes with aerials and earths and wires, radio stations in places where were played on the loudspeaker extraordinarily, careful one has to of Big Ben at midnight. (G.M.T.) and things of that kind. He likes there are already radio or tele with plenty of volume on this short be in attending to every detail of a
to have everything in one box, graph stations for public use, has antenna, and of course, the selec-powerful amplifier. If amateura Accompanied by three friends, with only a button to press if he been adopted by the government tivity was markedly improved, have experienced difficulty in ob- Mr. C. G. Allen (an amateur wire wants to hear music from a broad- largely for the purpose of avoiding One of the greateat treats however, taining, perfect stabilisation, they less operator) set out on a tour of casting atation. interference in communication not was the improved tone quality, would be well advised to see that only among local stations operated | The B-D type of circuit gave pretty the screening is perfect and to by the Insular government, by the good tone, but it could not equal avoid coupling due to battery leads. 'U. S. Army and Navy and by others this receiver paragraph. The flat
having franchises or licences, but top tuning curve is needed if one MISCELLANEOUS NOTES.
THE HONG KONG OPTICAL Co. with foreign stations as well. is to get good tone quality. Many
'Phone 2232,
58, Queen's Road Central.
Printers.
"THE CHINA MAIL," General
Printers. Publishers and Bookbinders.
in the case of short-wave stations..
.. *
Kent in a saleon motor car, in Do Not Expect Too Much. which he placed a six valve low The portable is an excellent wave set. A loud speaker was in thing in its way, so long as you stalled, and an aerial was rigged do not expect too much from it. over the hood. The reception of One friend of mine, having bought the broadcast from 3Lo was excel- a portable set and a Rice Kellogg "Furthermore, the International R.F. receivers have attempted to The British Post Office wireless lent from 7.30 o'clock. Mr. Allen loud-speaker, was positively furl- Radiotelegraph Convention, recent get this and many stages of R.F. direction finding vans have track has gained fame throughout Brious that his reception was not as ly held in Washington, DC., issued have been used with amall gain pered down many oscillatora in the tain as the most successful listen- good as that given by the demon- regulations relative to the preventage in order to avoid excessive past few months, but the nuisance er to distance stations, notably jstration Bet In the Science tion of international interference shape of the tuning curve.
regeneration "which destroys the is still rife. If the vans are to Australian stations.
Museum! For goodish loud-speak- This be used to best advantage, speedy The Popular Portable.
er strength you must have a power new receiver comes near to sound-action after a complaint is neces- It has been predicted in the valve in the last holder; for big "If the Installation of private ing like the flat top models than aary, says the "Daily Telegraph." spring of every year for some time strength a supor-power valve, or Ba, Wyndham Street. Tel. C. 22. short-wave stations is not limited, any other, and it is quite evident Serious "howling" in a given area now that the coming of summer even two in parallel, are required. the interference problem will be that the resonant curve of this set may have ceased if much time is would see a boom in portable sets. These valves are portable enough, come serious, and might get he is very rounded at the top, giving allowed to elapse, only to break "Boomlets" there have been; but, but the batteries required to work yond control. It is believed, there-practically a flat top without, tricky out with increased frenzy, when the curiously enough, the boom came them economically are not. fore, advisable to limit the number circuit arrangements, The case vans have safely retired. The not in summer-time, but at the be-not, then, expect a self-contained of privately owned stations so as for the shielded grid tube has been B.B.C. has done everything: It can ginaing of this last winter. Sev-receiving set to produce dance not to hamper or limill the opera- tried and it was found to be most to reduce the annoyance by issueral firms who specialise in these music for a couple of hundred tion of public service ratione.”
ing pamphlets and carefully, consi- receivers have been working over-{people in a large hall,
BRINGING UP FATHER.
Ship Chandlers.
E. HING & CO.,
26, Wing Wo St. Tel. C. 1118, Metal Merchants and Ship
Chandlers. Managing Director—
نااا
DO
THAT
en
FOR SALE.
·ASIATIC AND FOREIGN POSTAGE STAMPS In Bags, Packets, Sets, and
Single.
PICTORIAL POSTCARDS With Chinese Costumes, Views of Hong Kong, Canton,
'Macao &c.,
and ALBUMS of HONG KONG
SCENES.
GRACA & CO.
alers in Philatelie Goods. Artist Postcardny, Toys" Picture Booka, &c.
- No. 10, WYNDHAM STREET, P/0. Bar No. 620, HONG KONG
FATHER-WHY DON'T YOU TRY TO-BE NEAT?DRESS UP FOR DINNER - JUST TO PLEASE. MOTHER- TRY TO BE SWELL-DADDY-
Batisfactory.
BY GOLLY- COME TO THINK- ABOUT IT-I'M NOT A BAD LOOKIN'
MAN AT
Abh
WELL" FOR GOODNESS SAKE-LOOK AT THE WAY YOU'VE GOT THAT TIEF ON" AND DF ALL THINGS-DIDN'T 1 TELL YOU TO GET THAT SUIT
PRESSED? LOOKAT THE
SPOTS ON THAT
VEST-DON'T:
EVER COME BEFORE ME
AGAIN UNLESS
YOU?
SHAVE:1
GET OUT- YOU MAKE
ME SICK.
OUTSIDE
Do
OF THAT I'M ALL RIGHT-
HOPE.
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