Radio today (Jan-Mar 1939)

t&ulfoj MASTER ENCYCLOPEDIA r7Ui REFERENCE BOOK •&' ^ it*«^ V BUYING GUIDE SALES CATALOG ENCYCLOPEDIA 1939 EDITION — OVER 600 PAGES THE ONLY OFFICIAL" EQUIPMENT MANUAL of the Radio Industry! Compiled in cooperation with and approved by Radio Manufacturers, this authentic source book of over 600 pages is crammed full of vital, essential information that is indispensable to everyone identified with Radio and allied lines. GIVES THIS IMPORTANT DATA The New 1939 Edition of Radio's Master Encyclopedia is the most comprehensive ever issued. No other book like it. Important data that you need in your business — conveniently cross-indexed for split-second reference. Thousands of illustrations, specifications and prices on every conceivable type of Equipment, Accessories, Parts; ranging from Tubes to Transmitters, and including the latest in television tubes and parts. Contains Directory of over 1,000 Manufacturers where located and what they make — gives index of trade names. ••WHO USES IT?.. Universally used and accepted by Radio Jobbers and Dealers, Amateurs, Service Men, Schools, Colleges, Libraries, Governmental Agencies, Industrial Organizations, Purchasing Agents, Police Departments, Steamship Lines and many others connected in any degree or interested in Radio. SAVES TIME -SAVES MONEY Radio's Master Encyclopedia is truly a complete Radio and Equipment Manual all bound under one cover, taking the place of files and files of miscellaneous catalogs and information. WHERE — WHAT —HOW MUCH, instantly at your fingertips! Thousands in everyday practical use proving invaluable and unsurpassed as a REFERENCE BOOK, SALES CATALOG or BUYING GUIDE. MONEY BACK GUARANTEE! Radio's Master Encyclopedia, now in its third year, has served the industry well. That's why, with complete confidence, we are ready to send it to you on an absolute "Money Back in 5 Days" Guarantee, if you are not 100% satisfied. To save the cost of transportation, send your remittance with order — $2.50 in U.S.A., $3.00 Elsewhere. Or if you prefer, we will ship C.O.D. plus postage charges — in either case, our "Money Back in 5 Days" is your assurance of complete satisfaction. UNITED CATALOG PUBLISHERS hc 260 BROADWAY. . . NEW YORK, N. Y. communication system which enables the utilization of two or more carriers for simultaneous transmission of pictures, printing telegraphy, or telegraphy and speech or pictures and speech to remote points, through the use of simple apparatus which can be easily coupled to any telephone line. Patents on a new fast facsimile system have also been granted W. O. H. Finch. The new system is three times faster than the old, Finch reports. SduHefa New Sylvania display yOVRffflf0> LIKE TOUR CAR 700/ $YLYANIA RADIO TUBES An attractive display is being distributed by Hygrade Sylvania jobbers to servicemen. It comes in two sizes, the large is for window and the small for counter display. The display is printed in eight colors and is designed to help the dealer and servicemen sell their services. Corner cab/net booster To help dealers push sale of corner cabinet line of radios, StrombergCarlson has developed a new display. It consists of two hinged wings covered with wall paper, held in right angles by two gold-foil covered bars. The cross-bars contain the copy message and rest on a corner cabinet, which fits snugly between both wings. The wings give the effect of a room corner and saves dealer space. A Bantam buy Assortment of 6 Hytron bantam tubes in a single package, handles replacement for 18 tube types. One each of following; tubes: 6A8GT. 6J7GT. 6K7GT, 6Q7GT, 25L6GT, 25Z6GT, in individualy-sealed cartons. Dealers' net price of $2.39. Shields are supplied for tubes needing them. Packaged by Hytron Corp., 76 Lafayette St., Salem, Mass., to simplify dealers' and servicemen's needs. o* 1939 John F. Rider, recognizing the difficulty presented by the many de: velopments in Radio will, during the year, release a long list of new books especially written for the serviceman. Know Theory! Keep Ahead of a Fast Moving Industry. Books on this timely subject will cover all phases — including Light — PhotoElectric. Cells — Synchronization. liaALb fajcAimJ&i The high state of development in this field makes it necessary that you know its theory. Rider will give it to you. liaALb SiAAjixjuw There will be SIX new books that will tell, in the easy to understand Rider style, how to save time in servicing. UAi/L OKLOWI/lL Rider Manual Volume X will be issued in the Fall — covering 1939-40 sets. Many New Features! 404 Fourth Ave. New York City MARCH. 1939 When writing advertisers, please say you saw it in the 1939-40 RADIO YEAR BOOK 87