1923-07-28 — Page 7

THE HONGKONG TELEGRAPH,

SATURDAY, JULY 28, 1923.

RADIO NOTES AND NEWS.

Is the Vertical Antenna Best?

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754

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BROADCASTING STATION SEP AT RIO FANEIRO, SET IN A LOW VALLEY BETWEEN TWO HILLS, SHOWING HOW THE VERTICAL CAGE ANTENNA IS HELD UP..

An instance of the efficiency of the vertical antenna is brought out in the case of station Spe at Rio Janeiro.

จ

There, because of its peculiar location, in a low valley between Leo hills, this broadcasting station bas had to report to a vertical cage antongs, extending 500 feet in the air and held in place by a doublé cable stretch-

It ing from billtop. to hilltop. was installed in connection with the Brazilian exposition at Prais Vermelha and is being continued indefinitely.

transmitters.

Yet, the 500-watt transmitting capital is normally attended. The set-the same used at the regular conditions which have arisen as broadcasting rtations without a result of so many people coo. such bindrances in the Uitdaruating their own sets were not States is able to reach into Honolulu, and to be heard 1100 miles off deepite the heat of trepiest eummer, daytime and the natural obstructions of the surrounding country!

I it the vartioal caze antenna that makes this possible?

reseen, and two months ago negotiations were opened between the Post Office and themselves a to the issue of a new form of should continue to use their sets. license under which these people

He wanted them to understand tha, in. addition to trying to their in suufacturing protect Better Broadcasting..

members, they had never lost Another step was taken recent-sight of the interests of the iy in. Loudon towards the imgeneral public. They were ant provement of broadcasting, when going to stop broadcasting. Broad. come to stay, The apparatus used at this new studio was opened at the easting hai

need bo afraid station is a 500-watt Western premises of the British Broad and no one

Yet Casting Company at Savoy-bill. that the programmes would be Electric transmitting set.

The underlying principle in discontinued. They had already this station has already bean heard as far off as Honolulu, 8.000 quipping it has been to eliminate made contracts for their London miles away! That's the long dis-echo within and sound from with programme as far ahead as ex tance record for 500 welt radio out. All the walle have been December. In about six weeks the lined with six layers of sacking, new Manchester and Birmingham: weighing about five tona and stations would be operating, and More startling than this even, representing some five miles of the difficulty of securing artists! is the fact that this station has material, and the floor is covered owing to the inaccessibility of the bas carrying on two-way redio with heavy felt and carpets. The present station a; would be remov. | conversations with Sao Paulo 225 microphone used is a great im- ed. In London their new scoom- miles of, and Buenos Aires. 1.100 provement upon those employed modation would make possible miles to the south, in the heat of bitherio.. It will receive the voice programmes which were imposs summeraad in the daytime. That or instrumente in any part of the ible before. is just when radio transmission le studio, thus making it unueces most difficult and static disturb-eary to speak, ring, or play very acar to it Naturally, in a room ance most insidious.

Braider, the country is exceed-80 constituted there are diff ingly mountainous and is covered culties of ventilation, but there, it with thick tropical growth which is hoped, will be overcome. The absorba a great amount of the main object which the engineer energy sent out between stations. has bad in view is to bring about Due to its location, this was the the closest similarity between the most difficult situation encounter sotual voice oritone and the re ed by the radio engineers that production. It is claimed that suc. cess will follow this latest effort, erected the station.

IRE

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For instance, that night they had the band of the Grenadier Guards, and contracta had been made with other famous military bands for the reat of this

year.

been

be is so

Broadcasting at Sheffield. For some time those interested in wireless telephony at Bheffield have been complaining of the facilities for receiving messages Many of them consider that a

ought to bave A privileged body was invited station to view the studio on the occasion established in the city itself, and of its opening, and Lord Gainford, are by no means satisfied with cbarman of the company. took the fact that, the nearest of these the opportunity of addressing the contres is at Manchester. Now, an improvement is thousands of listeners in through however. aut the country. In the courss promised. Captain P.P. Eckers of his remarks he said the Broard-ley, the chief radio engineer of casting Company was not, in any the British Broadcasting Cam sense of the word, a monopoly.pany, has been investigating the The manufacturers of wireless ap. local conditions, and paratus met together by invitation sati-fed that the complaints are of the Past Office last year, as it was justif'd that it is proposed to realis d that broadcasting would establish a rolay station in or near Sheffield in the course of a have to be controlled by one

The trans broadcasting authorily if the month chaos which was so obvious in mission from, say, London will be America was to be avoided. It picked up at some point outside was also obvious that cert in Sheffield by wireless, and a land restrictions should be placed on wire will connect the wireless re- the clase of apparatus used in ceiving station with the transmit-i order thas chaos, by te ure of ting station. The strength of the reaction at the re civ ng end, signs le da received in 8bcffield might be avoided. No body of will be amplified several hundred commercial men were inclined times, and the effect will be that to put up capital to start a new listeners in will be able to obtain) enterprise unless they were satisfactory results from the use! comparatively crain of some of the cheaper crystal sets instead sort of retura on it, and the of the one, two, or three valve dividend of the Broadcastin. sets now needed. The University Company is limited to 74 or has undertaken to place its re- cent; that is to be the maximum sources at the disposal of the

or go.

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THE LATEST

SELF GENERATING Electric Torch

with extension for inspecting loteriors tanks. of petrol

barrels etc.

"MADE LIKE A WATCH"

THE ELECTRICAL DEPARTMENT

THE HONGKONG HOTEL COMPANY, LIMITED.

rate of interest on the capital company in order to facilitate the ponding closely to those prevailing theless the performance of two irvested, and is less than thexperiment and enable it to be put in England. This policy le pro-Karrier vas owned by the interest with which the raising into operation at the earliest moving highly successful and con- well known publishers, Messrs. of commercial or industrial ment..

sequently the firm's export selling Wyman, is somewhat remarkable. organisation bas been extended Both vehicles have been in use for BRITISH MOTOR NOTES. evitability of the 8 h.p. air-cooled to apply the same policy to all the over 10 years and both have sever

Rover for use in tropical se well markete of the world.

Proofs of Durability.

durability as in cooler countries. The point

Exceptional

By the R. A. C: Correspondent.

is one worth mentioning, because)

ed over 225,000 miles. The larger,

"

a 2 tonner, has cost in all about

hes

£227 for repaire," cverbauls ard

or

of the doubt sometimes expressed always been one of the chief replacements. The record of the The following motor notes by as to the efficiency of air cooling claims of the British engineering lighter vehicle, built for a 30 cwt. Carlindustry and I propose from time load, is even more more remark- In 10 years the total able. the R.A correspondent have under extreme conditions. been kindly supplied us by the respondents in India and Africa to time to give a few well

and overhauls bas amounted

£100, Hongkong Automobile Associs record petrol consumption well authenticated examples to prove cost of replec ments, repaire

to no mora than tion.:-

over forty miles per gallon with the justification of this claim, go

Looking through something 1.8s than one-eighth

· penny for every mile An Interesting Appointment, the 8 hp Rover and one user in far as motor manufacturers are

Also the proper allowance The same of Starley, though Indie claims to have achieved concerned.

the remarkable average of 58 some letters addressed. to the of well-known in the motor industry is perhaps even better known to miles per gallon at about 25 miles Sunbeam Motor Car Company, Irun. the older generation of pedal cy an hour. The Overseas model of find that there are many examples for depreciation of this vehicle is clists, who realise how much they the 8 borse Rover has specially of Sunbeam care still running shown to be no more than a half- bave been indebted to the Starley low gear ratios if required, and which were purchased more than 800 a milo, whereas the over 100,000 miles to their credit. machine of this size is more of their days. Consequently there the ground clearance is some-10 years ago and have records of allowance usually made for a

Even in the more modest like 111⁄2d or 2d. a mile.

The County Surveyor of are many who will be very inter-what increased.

Merers. A.J.8 evens report much ested to loare that Mr. J.K. ("Jack") Starley has recently improved export trade in A. J. S. aphere of the pedal bicycle, I have

motor cycles, with the exception lately come across an instance in Bedfordshire has issued a report taken the position of Managing that Europese trade is still some which, a Swift light roads or containing working costs of six

Director of the Rover Company

of which his father was the what stagnant, Even in Europe, purchased in 1897, is still running, Commer Car lorries, three of founder. Mr. Starley has been however, things are improving. A having covered over 125,000 miles which have been in service for for thirty years in the service of contract for over 200 AJ.S. motor on British and European roads, over ten years. The fleet covers the firm and is one of the most Cycles for Italy has recently come It has have never been off the about 80,000 miles in the year st replarament of chain saddle a little over fivepeooo. The loads carried have consisted maluly of popular figures ia the motor through and business is also brisk road for anything worse than the an average cost per ton mile of

in Switzerland." -- industry

In a previous note I referred to leather and pedal rubbers. the policy of the Austin Motor Substantial commercial vehicles road materials and the work has Mr. Starley has, by the way. Company of delivering their cars would naturally be expected to been largely over unmade roads shown me some very conclusive at the principal ports: in the show bigger rallenge records then and those in course of cons dosumiontary proof af the Empire Overseas at prices corres- the lighter products, but never-

Improved Export Trade,

struction,