Radio Broadcast (Nov. 1925-Apr 1926)

244 RADIO BROADCAST ADVERTISER ^digree Thirty-eight years ago — Mr. Alfred Graham invented and demonstrated the first practical loud speaker which the world had ever heard (illustrated above). Created by the actual originators and world 's oldest makers of loud speakers, it is only logical that the Amplion should be unrivaled for clarity of tone. Some of the countries in which Amplions rule as favorites: UNITED STATES CANADA ENGLAND SCOTLAND WALES IRELAND NORWAY SWEDEN DENMARK ■ HOLLAND BELGIUM FRANCE SPAIN SWITZERLAND ITALY JAPAN | SOUTH AFRICA NEW ZEALAND AUSTRALIA Graham Loud Speakers placed upon market. Illustration shows the "1893 model." In 1 894 Graham Loud Speakers first used in British Navy. Graham transmitters applied to phonographs for loud speaker reproduction. In 1896 Graham Loud Speaking Naval Telephones developed and adopted by British Admiralty. In 1398 Graham Watertight Loud Speakers patented. Placed onmany warships and mercantile vessels, throughout world. In 1902 Complete Graham Loud Speaker installations, on central bat tery plan, erected on warships as sole means of communication. In 1906 The most extensive loud speaking naval installation to date was made by Grahams. Included a Graham exchange system fitted to H. M. S. Dreadnought. Onwards Graham Loud Speakers applied to all sorts and conditions of service at home and abroad, ashore and afloat. By 1 9 1 9 No less than 12,000 Graham loud speaking installations in operation on ships alone. In 1920 (beforeradio loud speakers were in common use) "AMPLION" Loud Speakers produced for radio by Alfred Graham & Co. " AMPLION"trademark registered. In 1922 Amplions adopted as standard equipment by leading makers of radio sets abroad. In 1923 Amplions introduced into United States, Canada and other countries. Quickly attained largest throughout-the-world sale of any loud speakers. In 1924 To supply demand The Amplion Corporation of America was formed to market and manufacture Amplions here. In 1925 More Amplion companies formed and agents appointed throughout world to keep pace with international demand. The Amplion Corporation of Canada, Limited, organized. JUL WM))Mw. The Amplion of 1926 To hear this new cAmplion Dragon AR ig is to appreciate why cAmplions, -year after year, internationally lead in salts. Six models, including phonograph units, $i2to $42.^0. Write for interesting literature and dealer's address. JhelVoridSStandard fgud Speaker Alfred Graham & Co.. London, England Patentees THE AMPLION CORPORATION OF AMERICA Executive Offices: Suite L, 280 Madison Are., New York City Canadian Distributors: Burndept of Canada, Ltd., Toronto Associated Companies and Agents : Alfred Graham 8C Co., London, England; The Amplion Corporation of Canada, Limited, Toronto; Compagnie Francaise Amplion, Paris, France; Compagnie Continentale Amplion, Brussels, Belgium; Amalgamated Wireless (Australasia), Ltd., Sydney and Melbourne; British General Electric Company, Ltd., Johannesburg and Branches; Indian States and Eastern Agency, Bombay and Calcutta; C. J. Christie E. Hijo, Buenos Ayres; David Wallace 8C Co., Valparaiso; Mestre 8c Blatge, Rio de Janeiro; F. W. Hammond 8C Company, London and Tokio. This is a good time to subscribe for RADIO BROADCAST Through your dealer or direct, by the year only $4.00 DOUBLEDAY, PAGE & CO. GARDEN CITY, NEW YORK TRADE MARK REG. Above types in copper — tinned copperLoop wires in silk or cotton covered Litz wires. Enameled wires. Write us for descriptii ROSS WIRE COMPANY RADIO WIRES We manufacture all types. Round braided antenna wires Flat braided antenna wires Round stranded antenna wires enameled copper — tinned bronze. Antenna supporting springs. Cotton and silk covered wires for set wiring. i atalogue. W 69 Bath St., Providence, R. I. Say "Pico" Instead of "MicroM icrc-Farc.d" XA/HY not adopt and familiarize the prefix v " 'pico' for 'micromike?'" wrote Mr. F. I. Anderson in the September Radio Broadcast (page 662). "Thus, instead of saying a 'tripleo-five' condenser, for an instrument of 500 micro-micro-farads, let us say 500 picos, which is correct and simple, if we once get used to it. To be precise, we should say pico-farads, but we could drop the farads once we get used to the pico end of it." From Robert S. Kruse, technical editorof QST, comesa letter informing us that he is heartily in agreement with this idea and has already taken steps to make it take on definite shape. Editor, Radio Broadcast, Doubleday, Page & Company, Garden City, New York. Sir: I want to enter an enthusiastic endorsement of the idea expressed by Mr. F. I. Anderson on page 662 of your September issue. By a strange coincidence we received this issue on the exact day when we had been discussing the extremely unsatisfactory nature of the micromicro-farad. This letter is only to offer you my personal cooperation in anything you would care to do along this line, although we have already half formed a plan of more general technical cooperation. This plan has now been submitted to our Executive Committee which is investigating its practicality. Very truly yours, Robert S. Kruse. Technical Editor, QST. Radio Developments in New Zealand \ A 7E ARE always pleased to hear from our ' " readers abroad and we think that fans in this country are interested to know what progress is being made in foreign parts too. There is a certain amount of satisfaction in knowing that one's local station is heard regularly in some remote spot of the globe, and perhaps a certain amount of chagrin when one reads that such and such a station may be heard very well, in New Zealand for example, while the native fan, who may be merely two or three thousand miles nearer, is unable to receive it. We wonder what percentage of East Coast fans have received kgo, kfi, and kpo, as often as Mr. Dominion Radio Company wellington, new zealand Editor, Radio Broadcast, Doubleday, Page & Company, Garden City, New York. Sir: Just a few lines to express my appreciation of your excellent magazine. I have always found it an ideal publication in every way. I have just received the July issue and I think it is the best yet. I was very sorry to learn of the death of Miss Mix, as her column was of great interest to us. Broadcasting here is not of a very high order just yet, but this year will see New Zealand with one of the best broadcasting services in the world. Parliament is making provision this session for the erection of several main stations and several satellite relay stations. The revenue is derived from fees to be ir Tested and approved by Radio Broadcast if