The radio dealer (Apr-Sept 1922)

82 THE RADIO DEALER July, 1922 Du Kane Variable Condensers All Metal High Capacity 43 23 17 11 Plate Sizes Immediate Shipment Any Quantity Duquesne Radio & Mfg. Co. 6426-28-30 Hamilton Ave. PITTSBURGH, PA. it Will help V YOU ^.increase r sales This catalog will show you how to secure the names of your best prospective customers, those you want to reach most. Counts and prices are given on thousands of different Lists, covering business concerns, professions and individuals, such as Noodle Manufacturers. JJrugcists, Coal Mines. Karmers, etc. Personalized sales letters and descriptive literature mailed to live prospects will increase your sale3 by creating direct orders or inquiries. 99% Guaranteed Mailing Lists backed by our 5t refund Insure your cettltig up-to-dato information, for our Lists must bo compiled from latest sources to avoid heavy losses through the guarantee. Send for FREE Reference Book today A postcard will brim.' this valuable sales help. | ROSS-GOULD CO., N.IUUi. St. Louis. , Ross -Gould Mailing LiS't'S St.Louis SELXS AT SIGHT VARIO COUPLER KNOCK-DOWN Complete Parts BOXED Tube— Black Insulated. Rotor— Hard wood. Hardware— Brass — NICKEL PLATED, in"' -v "*v eluding Hard •\ wood Base for 1 mounting. List $1.50 Liberal Discount THE R. C. MILES Manufacturers Agents 30 East 23d Street New York City Sale; Representatives Wantea. Sectional UNIVERSAL Radio Outfits Set of Three Units: Tuner and Detector Unit. . . $ 50 00 Two-Step Amplifier Unit.. .. 35.00 Unit for holding "A" Battery 9.50 Top and Bottom, which when added to the three other units, make a complete section all in one. Each, $5; both 10.00 Complete Set, Total $104.50 Ask your dealer; if he cannot supply, write us. Dealers and Jobbers: write for discounts. Dept. 805. ^-^^ Davenport. Iowa. U.S.A. Antenna Cannot Cross Alleys in Chicago By F. D. PEARNE Chief Instructor, Dept. of Electricity, Lane Technical High School No part of the antenna system, including the antenna, its supports or supporting structure, shall project upon or cross any public street, ailey or other public property, unless installation has been authorized by the City Council of the City of Chicago in accordance with the provisions of Sections 2500 to 2503 of the Chicago Code of 191 1. This is included in the new radio ordinance. The Commissioner of Gas and Electricity or his assistants shall have the power and it shall be their duty carefully to inspect all installations. They have the right to enter any building when deemed necessary, to inspect such installations, and it shall be unlawful for any person to interfere with them in the performance of their duties. If upon inspection it shall be found that installation is safe, the commissioner shall issue a certificate of inspection. The use of such radio apparatus will be declared to be unlawful previous to the issuance of such certificates, provided, however, the Commissioner of Gas and Electricity may issue a temporary permit for use of apparatus during the course of construction or alterations. The said Commissioner of Gas and Electricity is empowered to inspect and reinspect all radio sending and receiving equipment. When such equipment is found to be unsafe to life or property he shall notify the person or persons owning, using or maintaining such equipment to place same in a safe and secure condition within forty-eight hours. Previous to the issuance of the permit provided for in Section 2, there shall be paid, by the person or persons ROYDART DETECTOR The makers of the " Roydart " products also make a double barrelled crystal set detector. This has two galena crystals held in cups. The set also permits of satisfactory adjustment of the cat's whisker through simply pressing the two spring leaves that hold the rod. As soon as the pressure on the spring leaves is removed the rod stays " put." The " Roydart " line also includes a system of vacuum tube set units that permits of a gradual upbuilding of the set as the enthusiast becomes more and more proficient. making application for such permit, and collected by the city collector, inspection fees in accordance with the following classifications : Receiving stations only, $3. Transmitting and receiving stations, $5. Reinspections, $1.50 per hour. No inspection for less than $1.50. DEALERS Have you tried " PRACO " Service ? We are distributors to the trade for all representative manufacturers, and specialize in the cutting of panels and tubing to your order. Have you our latest price list and discount sheet ? PITTSBURGH RADIO AND APPLIANCE CO., Inc. Desk D 112 Diamond St., Pittsburgh, Pa. SALES ORGANIZATION with established reputation among radio manufacturers, jobbers and dealers in the Metropolitan District will consider promotion of one additional production exclusive basis. Can give references and prove past results. Box E. A., Radio Dealer. ATTENTION MR. DEALER Do you find any difficulties in obtaining your desired Radio supplies? If so, wire or write us your needs. We carry standard supplies that are sold with a guarantee. A postcard will bring you our catalog. Our PolicyQuality, Delivery, Guarantee WHITE RADIO CO. Distributors 141-3-5 West 33d Street NEW YORK CITY