Radio today (Sept 1935-Dec 1936)

HAVE A NEW BOOKLET * Solar Mfg. Corp., 599 Broadway, New York, announces a new technical catalog for engineers and laboratory execs. * Sound Engineering Manual published by Webster-Chicago Co., 3825 West Lake St., is off the press. Free to dealers who have previously requested them; 10 cents to others. • Brush Development Co., 1893 E. 40th St., Cleveland, Ohio, is ready with a Data Sheet No. 10 crystal-operated type headphones. • Briggs & Stratton Corp., Milwaukee, Wis., has just issued a sales manual and instruction book on the company's new 6-volt battery charging unit and lighting plant. Here is what users of OPERADIO UNIT-MATCHED EQUIPMENT say: "The use of OPERADIO P. A. Equipment has enabled us to increase the attendance of our airport as high as 400 %. " — Large Chicago Airport. "It looks like we'll have to doff the old bonnet to OPERADIO with reference to your Model 62 Portable Auto Amplifier. It certainly Is a honey." — Illinois Radio Shop. "It will be pleasing to you to know of the hundreds of complimentary remarks made to members of the committees on the excellent loud speaking equipment furnished by your company for our picnic." — Dallas, Texas. Commercial Association. "We And that the message we want to deliver to the public is done more directly over the OPERADIO Public Address System than through any other medium and is therefore more effective." — Chain Store Ladles' Apparel Shop, San Francisco. "Tour OPERADIO Sound Equipment has been In use in our 11th Street Store for a period of six months. To date we are completely satisfied with this System and would say that were we In a position to do so. we would also install same in our 27th Street Store." — Milwaukee Drug Shop. "We furnished your new Adore Model 18A Junior Portable OPERADIO Public Address Unit to Rear Admiral Richard E. Byrd for his lecture In the local theatre, where he talked to about 1700 people. He made the statement that yours was the finest system that he had ever used in connection with the many lectures he has given." — Indiana Radio Sales & Service. "We received a real pleasant surprise in the performance of the OPERADIO Sound System purchased from you, and it is our belief that other shows will adapt its usage rapidly. ' ' — Nationally known circus. •Facsimile copies of letters from which the above statements were taken will be supplied on request. ■ss Dept. RTjor Catalog No. 10 Ask About Our Convenient Time Payment Plan row MANUFACTURING COMPANY Unit-Matched P. d. Equipment at its Finest ST. CHARLES, ILLINOIS * Simpson Elec. Co., 5216 W. Kinzie St., Chicago, has literature on a new type tube tester and set servicer, introducing Roto-Ranger meter. * Warren Telechron Co., Ashland, Mass., has announced a Winter catalog on self-starting electric clocks. * Magnavox Co., Fort Wayne, Ind., has a new engineering bulletin on wet electrolytic capacitors. * Tobe Deutschmann Corp., Canton, Mass., has published a new catalog completely descriptive of all the company's products. * United Sound Engineering Co., 2233 University Ave., St. Paul, Minn., is ready with new descriptive literature on radio service equipment. * Monark Battery Co., 4556 Grand Ave., Chicago, is offering an information series on special radio batteries designed for farm radios. * Ward Products Corp., Cleveland, Ohio, is ready to send a new catalog showing the complete line of the firm's products. * International Radio Corp., 515 William St., Ann Arbor, Mich., has a new announcement series on Kadette quality compacts, featuring the company's "Clockette." * Meissner Mfg. Co., Mt. Carmel, 111., is out with a new bulletin No. 510, carrying complete coil listings. * McMurdo Silver Corp., 3356 N. Paulina St., Chicago, is ready to rush full detail bulletins on a "Masterpiece 30-60" sound system. * Radio Speakers, Inc., 1338 S. Michigan Ave., Chicago, is currently releasing an information series on permanent dynamic and electro dynamic speakers. * Majestic Radio & Television Co., 600 West Adams St., Chicago, has complete literature on its new 1937 line of receivers. * Operadio Mfg. Co., St. Charles, 111., has announced a catalog No. 10 on unit-matched P.A. portable units, amplifiers, mikes and speakers. * Utah Radio Products Co., Orleans St., Chicago, will send bulletins on a complete line of vibrators, transformers, chokes, and 8 other products. • . SPEND AN HOUR A DAY WITH RIDER • • AN HOUR A DAY WITH RIDER on RESONANCE and ALIGNMENT Do you know what happens when you tune a circuit to resonance? Are you familiar with all the various alignment operations? Can you align the oscillator, r-f and detector circuits— single, double, or triple tuned systems — of any set and KNOW why you do certain things? This book gives the answers. Pocket Size RESONANCE OHO( ALIGNMENT Profusely Illustrated YOUR SUCCESS AN HOUR A DAY WITH RIDER on DC VOLTAGE DISTRIBUTION in RADIO RECEIVERS You should know thoroughly how the value of resistance and wattage rating of each resistor in any receiver is calculated — and why. The DC distribution networks of 1937 sets are more complicated than ever! Get these facts at your command. Let Rider guide you through all DC distributing systems. He makes it easy. Hard Covers D.C.VOLTAGE DISTRIBUTION 17L RADIO RECEIVERS AN HOUR A DAY WITH RIDER on AUTOMATIC VOLUME CONTROL A.V.C. is now a standard feature in practically every receiver. Can you recognize one system from another when you examine the schematic? Do you know how the circuits operate in the different receivers? Here is the source of information that will answer every one of your questions — and the data will serve you for years. 96 Pages 60 cents each Buy them from Your Jobber DEMANDS YOU OWN EVERY RIDER MANUAL 62 Radio Today