Radio Broadcast (May 1928-Apr 1929)

r i a SB The Name Means Everything Strict vigilance guards the acknowledged high standards of these tubes with the result of an ever-increasing efficiency of performance. A set of new Cunningham Tubes gives new life to your radio. X;Xv-;Xv Manufa tured anil sold under -XvX-X' nght;.. patents and inventions •XXvXX owned and/or controlled by XyXX* XvXvXy Radio Cot poration of America. vX-xX;' 111 E. T. CUNNINGHAM Wi Inc. .aX-XX-X New York Chicago XvXxy: Xv. Xv/Xv. San Francisco . :.X-XvX-X-? L A BRACH RAOHFOTO RELAY Used Exclusively in the COOLEY Rayfoto Receiver Approved by A G. COOLEY For Further information Address L.S.BRACH MFG. CORR ENGINEERS AND MANUFACTURERS NEWARK N J U.S.A. TORONTO, CAN JU*T OFF THE PRE*S thoroughly revised; right dozen to the minute; much new material never published; greatly improved and enlarged; no advance in price Fourth Edition "Radio Theory and Operating" By Mary Texanna Loomis President and Lecturer on Radio, Loomis Radio College. Member, Institute of Radio Engineers, Copyright in XT. S. and Great Britain. Nearly 900 Pages. Over 700 Illustrations. Beautifully bound in Flexible Red Kraft Leather, stamped in gold. Complete text and reference book on radio, with special chapter on "Aircraft Radio," and much European material added, especially" British. The first edition of this book was published in July, 1925, and since that time has been used as a text by practically all the leading radio s hools in the United States and Canada, by many universities, technical colleges and high schools, and by all the United States radio schools of the Army, Navy and Coast Guard, also a reference book of the Department of Commerce. It has long since been recognized as America's Standard RADIO TEXT BOOK and has had the largest sale of any radio book on the market during the last three years. It contains a wealth of practical, systematically arranged, and sympathetically presented information. This book, so different from other works on the subject, is understandable and interesting, not just page after page of dry theory. The author has received hundreds of letters from educators, radio experts and fans from all parts of the world praising the book in highest terms. It seems to have filled a long felt want in the line of radio text and reference books. Each edition has been a great improvement over the preceding edition, but the latest edition (4th} far surpasses any of them. It is a library in itself, and you should have a copy, if interested in radio. PRICE $8.50 Postage Paid To All Countries For sale in nearly all bookstores in the United States, also in Shanghai, China; London, England; Melbourne, Australia; Wellington. N. Z.J Calcutta, India; Honolulu. T. H. ; Manila, P. I. ; Vancouver, B. C. Buy of your hookdealer, or send check or money order to LOOMIS PUBLISHING COMPANY Dept. 10 Washington, D. C. RADDOFONE! THE ^'V,/ ELECTRIC RADIO PHONOGRAPH COMBINATION* PlatterWalixjt Console fjosworth €> tube AC. set with 2 rectifier* tubes oefdeef PlIROPCWER 86inch SpeaUer GENERAL ELECTRIC MOTOR and special (^iocAric pickups— lllr-de^Jer deslar I III iimiilNiinmiirmmiifii'jmuiiiuiiHiMimiHimimiiM i< nimiiJinmmu mum iwiwin PLATTER CABINET <2 NORTH VERNON INDIANA lilllilHil|iiiiiiiiiiiliiiiiiilii|itiiiiiiiiiiuitiiuini(uiiiiiiiiiiii(itiniiiiiiiiitiiiMiiiiiiiiiii iiiiiiniiiiii RADIO DEALERS Send for our catalog illustrating the products of over 100 radio manufacturers. WHOLESALE ONLY! F. D. PITTS COMPANY 219-223 Columbus Ave. BOSTON, MASS., U. S. A. Established 1919 Since IQIJ STAN CARD QUALITY