Radio Broadcast (May 1929-Apr 1930)

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WILLIS KINGSLEY WING .... Editor KEITH HENNEY . Director of the Laboratory HOWARD E. RHODES . . Technical Editor EDGAR H. FELIX . . . Contributing Editor RADIO BROADCAST PUBLISHED FOR THE RADIO INDUSTRY VOL. XV. NO. 6 Contents for October, 1929 MERCHANDISING SECTION The Telephone Rings the Doorbell Everett M. Walker 317 Features That Sell Radio ---- Dudley Walford 319 Are Used Sets Like Used Cars? - - - - 320 Clippings - - - What Radio Men Say 322 Saving the Summer Slump --------- 323 Have You Personality? Then Sell It Howard W. Dickinson 324 A Merchandising Plan That Sells Sets ------ 326 Keeping Service Sold ----- John S. Dunham 328 Tested Sales Ideas ---- Merchandising Shorts 330 Cooperative Dealer Broadcasting Novel Window Display Sell Your Golf Clubs Receivers Building a Prospect List Striking Window Display Dramatizing Battery Set's Uselessness Value of Good Delivery Trucks Selling the Farmer The Radio Dealer's Advertising Dollar ------ 332 The March of Radio An Editorial Interpretation 334 How About the Jobber's Place? A Medal for Commissioner Lafount Improving the Dealer's Position Courts Strengthen Commission's Position Professionally Speaking ------ Keith Henney 336 We Still Have Growing Pains New Features for 1930 Sets The Tube Business News of the Tube Industry 337 News of the Radio Industry --------- 338 In the Radio Marketplace Offerings of Manufacturers 342 The Serviceman's Corner - - - - - 344 ENGINEERING SECTION Strays from the Laboratory Technical Shorts 349 Regarding Band-Pass Circuits Engineering Limits Efficiency of Crystal Control New Government Books Data on Pentodes Cost of Quartz Crystals Eight Good Slogans Badio Sets for the Farm Grid-Leak Vs. Grid-Bias Detection J. M. Stinchfield 350 "Radio Broadcast's" Set Data Sheets ------ 353 The Edison Model C-l The Fada Models 55 and 77 The Steinite Model 40 The Buckingham Model 80 Automatic Volume Control Virgil M. Graham 355 Design of the Colonial 32A.C. Fulton Cutting 358 An English Output Tube, the Pentode -W.T. Cocking 360 Radio Broadcast Laboratory Information Sheets Howard E. Rhodes 364 No. 301. Output Transformer No. 303. "Power" and "Lin Ratios ear" Detection No. 302. Output Transformer Ratios The contents of this magazine is indexed in The Benders' Guide to Periodical Literature, which is on file at all public libraries among other things This month we take a few lines to quote the plaint of a dealer who has the problem of selling radio in a rural community. His shop is in North Dakota. He says: "Have the radio manufacturers forgotten there is a rural population? I do not know of a commercial receiver that is practical and at the same time economical in operation for the user of batteries that can even approach the satisfactory performance of the modern socket-powered sets. As a dealer in a rural community I expect approximately fifty per cent, of my business from the rural population who have no electric light service, and I have to get along with magnetic loud speakers and the power output of a 112a tube, unless they can afford an extensive outlay of B batteries and continual charging of storage batteries to operate a larger power tube and dynamic loud speaker. It is my impression that any manufacturer who would market a practical four or five-tube screen-grid set with a low plate-current consumption and the volume level of a 171a tube or more would be amply rewarded for his efforts. As it is, sales on battery sets will be bound to slump badly and a large potential market is being sadly neglected." Let the rural dealers take heart. It will not be long that the battery-user will be penalized for his lack of electric power service. Some sets are already on the market to meet this requirement — and it is a real one — and more are on the way. We should not be surprised to see new tube design contribute greatly within the next twelvemonth to a more complete answer to this need. The Rochester, Buffalo-Niagara, Cleveland, and Toronto sections of the Institute of Radio Engineers are sponsoring a district convention to be held in Rochester, N. Y., November 18 and 19. Papers will be delivered by A. Hoyt Taylor, W. A. MacDonald, W. C. White, and others. — Willis Kingsley Wing. TERMS: $4.00 a year; single copies 35 cents; All rights reserved. Copyright, 1929, in the United Stales, Newfoundland, Greal Britain, Canada, andother countries by DOUBLEDAY, DORAN & COMPANY, INC., Garden City, New York MAGAZINES Country Life Radio Broadcast Short Stories Le Petit Journal El Eco West World's Work . . The American Home BOOK SHOPS (Books of all Publishers) . . . New York: <Lord & Taylor, James McCheery & Company, Pennsylvania Terminal, 166 West 32nd St., 848 Madison Ave., 51 East 44th Street, 420, 526, and 819 Lexington Avenue, Grand Central Terminal, 10 Wall Street> Atlantic City: <2807 Boardwalk> Chicago: <75 East Adams Street> St. Louis: <223 N. 8th St. and 4914 Maryland Ave.> Cleveland: <Higbee Company> Springfield, Mass: <Meekins, Packard & Wheat. OFFICES . . . Garden City, N. Y. New York: 244 Madison Avenue. Boston: Park Square Building. Chicago: Peoples Gas Building. Santa Barbara, Cal. London: Wm. Heinemann, Ltd. Toronto: Doubleday, Doran & Gundy, Ltd. OFFICERS . . . F. N. Doubleday, Chairman of the Board; Nelson Doubleday, President; George II. Doran, Vice-President; Russell Doubleday, Secretary; John J. Hessian, Treasurer; Lillian A. Comstock, Assl'l Secretary; L. J. McNaughton, Asst't Treasurer 314 • • OCTOBER 1 929 •