2
HONGKONG TELEGRAPH.
SATURDAY,
OCTOBER 4, 1924. (FEATURE SECTION)..
RADIO NOTES AND NEWS.
Sodion Detector with High Selectivity,
B
LUFF YOU TRULY TRULY DEAR
arold P. Donto, inventor of combination is connected acros .o sodion detector, which has the tube terminals, rather than # that its shown some advantages over the noross the hattory, eryatal and regular tube in many range of adjustment will be in- circuits, in still at work trying to dopendent of battery conditions. perfect it and put it to more use!
Otherwise tho cireult is protic. than aro at present available,. ally like a single tube doubla circuit. His latest tube, the H-13, la Inductively coupled quite an improvement on the There's a varie coupler for tho coupling. 11 23-plato original, which came in a your antenna or more ngo. This uses a solid, variable condensor across the instead of a liquid, anode. It is rotor or secondary, and a 43-plata said to be much more sensitive variable condenser in the ground and more economical in the fa- cirenit. ment power required. It uses a filament current of less than one fourth ampera
The structure of the SB tubo is shown in the diagram. Cis the connection leading to the Femi-oylindrical "collector," and Ploads to the "anode" electrade. These are both of nickel. The filam, P. is fun up just within the open side of the collector.
The wires supporting these parts are sealed through a glass head and the entire assembly is mounted in a mall glass tube."
the
This high selectivity is obtained in the antenna cireuit.
....__.PHILIPPINES RADIO.
University to Take Up Wireless.
The Manila Bulletin of Septem- ber 24th reports: --
Two important innovations, ono establishment of an extension service envering the entire islands through radio and the other in- volving a radical re-arrangement of the academic year; will come On the outside of this tuba are up at the meeting of the executive commented a fow turns of resistance committee of the University of wire, connected directly in series the Philippines next Thursday. with the filament. This wire Doan Francisco Bonitoz of tho Borves a double purpose, as a form college of education is the father of heater, of maintaining
of the radio extension service ides proper vapor pressure within the and he made the recommenda- tubo and of providing the necess- tion to higher university officials. ery potential for the collector.
His proposal involves the erection A good circuit for non of thin of a university broadcasting new tube accompanios this des- station capable of reaching the cription. The heater, H, is, con- remotest sections of the islands nocted in sorios with the negative with a view to giving the people and of the filament to secure a the benefitof lectures of professors necutive potential for the collector on matters of public interest and circuit Cand Pare the collector also to giving them a chance to and anode terminals and P ́i tho, hear the addresses of prominent potentiometer which is used to visitors in the university during regulate the potential of the the weekly convocations, collecter for, variotts conditions. It is believed that the radio ex- of operation.
tension service plan is within the Since the greatest collector power of the univerity to carry potential variation pred never be out. It is declared that the ex- more than a few truths of a volt, penditure involved is not of such resistance i: added, PR. 10large amount as to be a burden broaden its adjustment. This university
financos. Tho
R
BATTERY
B BATTERY
HOOKUP SHOWING USE OF THE NEW SODION DETECTOR, 8-13, WITH DETAILS OF THE TUBES CONSTRUCTION,
"Choke that radio, Frod. Can't you see it's spoiling our quarrol ?"
of the insular
cooperation government in carrying out the project can be obtained, it is confidently declared.!
Tho other plan Neoks to introduce the quarterly system of study instead of the Homestral
lavolved. The present now semestral system is more than losa than the
INTERNATIONAL RADIO WEEK.
The ohlef radio topio of the moment in the international radio week, which it is hoped to arrange : from November 23rd to November 30th. The B. B. C. are interesting themselves in the proposals, and are being inado arrangements whareby Continental stations діня participate in the standard semester in American mas Most valve Hots-will collegos.
declared, scheme. The quarterly system may be already receive several of tho so arranged as to compensate the European stations oasily enough, loss now occasioned the students but rebroadcasting by the BB.C. would certainly be much enjoyed through shortoning of between-
by crystal set users. terms it is declared.
week a
it is
.
·
HOSPITAL APPEAL.
HEAVY GALE IN BANGDON.
As the result of a heavy galo
A novel method of appoaling to the public for funds for the hostel for professional nurses wi ich Lady Lytton hopes to esta-on September 1st, the Govern blish in Calcutta was adopted on Sept. 7th., when one of the leaders of the movement broadcasted information with regard to the proposed institution and asked the help of all listeners-in. This
ment launch Clan was sunk at Rangain. She was making for! Dalla Creek to seek shelter, when she was caught by a squall. The engine-room was awamped by a wave, causing her to foundor.
WITH the approach of cooler days, one naturally thinks of his headgear-and rightly so. Every well-dressed man realises that his hat is one of the most important details of his dress-it can so easily
make or mar his appearance.
New
Autumn
Hats.
is the first time any appeal has Forturately, no lives were lost, We are now showing the New
been broadcasted in Calcutta.
2
THE HIGHEST STATION.
▾
the crow being picked up by
another launch Salvage opera Season's Styles in Glyn's Celebrated
tions have begun, and it is hoped that the launch will bo raised!
The now wireless station on the shortly. Besides the damago caus Soft Felt Hats, Tweed Hats and
Herzogstand Mountain, Bavaria, ad to trees and electric wires the
in Boaring completicn. The loss of life reported so far is that Caps, Bowlers, Single and Double mountain stands 5,400 feet above of two persons through a house sen level, and the wireless station being blown down.
is claimed to be the highest in the world. Now it is announced that a Swise station is to built no less
than 8,300 feet above sun level, by the St. Gall Radio Association. This must seem very galling to the Bavarians!
IT WORKS.
Terais, Silk Hats, etc.
A very dressy Glyn" Model, with bound edge brim.
GLYN
HATS OF..
CHARACTER and REPUTATION.
GECOPHONE
(GLYN & CHA
10ldBen:S LONDON.
A splendid all weather shape
that turns down |losing smartness.
Colours:-
without
Groy, Silver, Brown, Smoke,. Black, White.
There is a
GLYN STYLE
for everyone.
A [really dressy shape
which has become ex-
tremely popular.
TWO VALVE AMPLIFIER.
THE SINGLE & TWO VALVE AMPLIFIERS
CAN BE USED WITH
GECOPHONE
CRYSTAL OR VALVE RECEIVING SETS.
BC 2620, LOUD SPEAKER
$48.
THE GENERAL ELECTRIC CO.,
W. O. Runcle of Philadelphia !s shown here with a two-tube" reflex receiver be built into a postcard size camera casa. Two dry battery lupes and a crystal": dalector, with transformera, con denser and other necessary parts-- have been crowded into this little pos
A "Glyn" Hat draws the attention. of every man who uses a wise dis- crimation in his choice of headgear, and the wide range of styles ensures satisfaction for each customer nó matter what his taste or preference,
The new Glyn Styles are well worth an Inspection. We shall be pleased to show you or send on approval.
Wm. POWELL, Ltd.
Sole Are for GLYN
No comments yet.
Private notes are available after approval.