Radio today (Jan-Dec 1937)

J Jn^MjtmJu THE CHOICE OF SERVICEMEN BECAUSE THEY ARE USED BY LEADING SET IVTANUFACTURERS TRIAD MANUFACTURING COMPANY, Inc. Pawtucket, Rhode Island The Quality Name in RadioTubes Profitable! • CLAROSTAT KxHct Duplicate Controls, Resistors and Ballasts save time, trouble, uioiiey^ kickbacks. it Fit in place. Function correctly. Look the part. A real servicing job. •k Restore any set to original factory status. Satisfies the set owner. ■k Most extensiA'e listings of sets and replacements eliminate all guess^vork. See Us at I.R.E. Show or at National Parts Show. Meanwhile, write for free Guide and Catalog. CLAROSTAT .VvVi, MAXIJFAiCTIjIH.'Vfi CO. N > 2U5 IVorth Sixlli Si. y-^ Ilrooklvn, jX. >'. H. W. BlakesKe, named by Zenith to head promotion on parts and access. TECHNICAL MEETINGS AT I. R. S. M. CONVENTION ■*■ Lectures for the forthcoming I.R.S.M. Convention, June 10 to 13, will be of a more varied type than the Institute has ever arranged before. Technical lectures on timely subjects, clinics, and similar sessions will be supplemented by inspirational talks delivered by men whose names have made radio. Among those who will appear on the Convention program are E. T. Ciinniiig'hani, Pres. of RCA Mfg. Co.; O. H. Caldwell, former Radio Commissioner and now Editor of RADIO TODAY; Robert Herzog, Editor of SERVICE; Harold Olsen, of Weston; Walter Jones, of Hygrade-Sylvania. Keeping pace with developments in the electronic art and in response to repeated inquiries from servicemen, arrangements have been made for a discussion of the use of radio frequency in intercommunicating systems for offices and homes. The speaker on this subject will be either Herbert H. Frost, head of the FrostMinton Corn., or Fi-ank Hayes, his Chief Engineer. It is planned also to devote an evening to a "Set Clinic" to allow technical representatives of the set manufacturers to explain in an informal manner the engineering and service aspects of their apparatus. Clinics on test apparatus and public address are also being planned. ■*• At the April 1st meeting of the Emporium, Pa., section of the Institute of Radio Engineers, speaker was R. H. Langley, well known radio consulting engineer. Subject was "Some Studies of Magnetic Materials at High Frequencies." * George Non'is, veteran representative in Seattle, Wash., for Triumph Mfg. Co., has been re-appointed to represent the firm in lining up new distributors. Triumph has branches out from the contract buyer and export business; increased production facilities now permit sales through distributors and parts jobbers. Model 600 Model 500 SHORT WAVE CONVERTERS FOR CAR RADIOS Can be attached to any car radio. Has on and off switch. Does not aCFect the reception on the standard broadcast bands. MODEL 600 — covers 49. 31, 25, 20, 19 and 16 meter bands. Designed for reception of American and Foreign short wave broadcast. Especially adapted to use in tropical countries and the more remote parts of the world. Distance range 5000 to 10000 miles. A very attractive unit. List Price $24.95 MODEL 300 — covers 6000 to 20000 kilocycles. Has variable condenser with illuminated diaL List Price $19.95 For Use of Police and Other Law diforcenient Oliieers MODEL 100 — police converter with fixed condenser. Covers 1500 to 2600 kilocycles. List Price $1 1,95 MODEL 200 — police converter with variable condenser and illuminated dial. Covers 1500 to 5500 kilocycles. List Price $17.95 MODEL 400 — police converter with fixed condensers. Covers 5 to 10 meters. Also adapted for usr of amateurs. List Price $ 1 3.95 MODEL 500 — police converter with two metal tubes, variable condenser and illuminated dial. Very sensitive. Exceptional distance range. List ?rice $21.95 ALL WAVE ANTENNAS — Model B— under car and Model C— Fish Pole Type. List Price $5.00 JOBBERS AND DEALERS WANTED ABC RADIO LABORATORIES 33.14 N. IVew .lersey Street Iiifliniiapoli.s, liiflinna, U. S. A. 1 his low-priced "Salt-Shaker" mike is a winner! Bell Telephone Laboratories designed it for broadcasting and public address. It's both directional and non-directional— assures regular Western Electric quality at a new low price! Distributed by GRAYBAR Electric Co. In Canada: iSorthern Electric Co., Ltd. GRAYBAR ELECTRIC CO., RT-4-37 Graybar BIdg., New York. PleaBe send bulletin describing the new WeBtern Electric 633A microphone. yame Addrens City State -- April, 1937 75