Radio today (Jan-Dec 1938)

After the starting voltage of the vibrator has been obtained, adjust the potentiometer so that the voltage is between 6 and 6Vi volts, then observe the output meter for smooth flow of secondary power. The output meter can be calibrated in "good" and "bad" readings by using known good and bad vibrators. Vibrator testers of this type will prove invaluable since the true condition of the vibrator may be quickly, easily and accurately determined. GROUND CONNECTIONS ON NEW TYPE OCTAL SOCKETS When tracing the wiring in StewartWarner 1939 radio chassis, it will be found that apparently certain socket terminals are not connected to ground, even though the circuit diagram shows a ground connection. Actually such terminals are connected to a common grounding lug which is located between the two bakelite wafers of the socket. It is important to remember this fact when tracing the circuit wiring since if you do not know of these internal connections, the circuit wiring may seem to be incomplete. MEN WHO ARE STABILIZING RADIO-PARTS SALES (One of a series) T~ — CONNECTION BETWEEN W BAKELITE WAFERS w jmfasz % / % J^HH 9 to, P ( wk ^GROUNDING v <^m LUG D V ^ / BOTTOM VIEW Sockets with the internal connections can be identified by the grounding lug extending from the side of the socket (see diagram). In the chassis this lug is always grounded. The bottom view of the socket shows which three terminals are connected to the grounding lug. For most tubes these terminals are the cathode, one side of the heater and the shield connection. Most of the Stewart-Warner 1939 A.C. receivers use one or more of these special sockets, employing them wherever all three of the above terminals are to be grounded to the chassis. Of course, any wiring or other parts connecting to any of these three socket terminals are thus grounded by the internal socket connector. + One manufacturer of small sets cautions the serviceman to place the back of the receiver at least six inches away from the wall, etc., so as to allow free circulation of the air. Set referred to is an AC-DC job using a plug-in type resistor in series with filaments. Seems that this might also apply to AC-DC sets made by other manufacturers. Leon Adelman Sales problems of the Cornell-Dubilier Electric Corporation are managed by genial Leon L. Adelman. At the lusty age of nine, when most moppets are falling off tricycles, Adelman was already looking into the curious workings of inductance coils, condensers, crystal detectors and aerials — with a view, possibly to "taking up" radio. This is significant because few men of his age — Adelman is now 35 — bring to their job so vast a fund of useful experience. Salesman, laboratory assistant, director of publicity, editor, advertising manager, sales manager — these are satisfactory careers in themselves for most men, but to Leon it's all in a lifetime, and all in radio, at that. Those who know him will tell you, at the drop of a condenser, of this man's extremely likable, smiling disposition, of his honest, straightforward business dealings and his genius for hard work. And a quick glance at Cornell-Dubilier's sales chart offers insight into the man's managing ability. Under Adelman's persistent guiding hand, C-D jobber sales have skyrocketed. In 1934, sales have doubled those of '33; in 1935, they were up 100 per cent again over the previous year. 1936 saw them shoot ahead another 60 per cent and in 1937, 40 per cent higher. Adelman's formula for success is simple. Work. If the lights are burning late in the home office, you know Adelman is in town, and seeing to it that every order has been filled. Mostly though, he is on the road. As radio editor of Science and Invention and the Experimenter; technical editor of Radio News; contributing editor of Radio World and associate editor of Amateur Radio, he worked tirelessly to keep interest alive in the burgeoning art by spreading information to eager fans many of whom were to become foremost figures in radio. As a counter salesman in radio's pinafore days, Adelman learned firsthand the requirements of radio parts buyers and dealers. Later, as service manager for the F.A.D. Andrea Company, he came to know radio sets and the importance of quality parts in avoiding service troubles. From Fada, Leon Adelman joined the pioneer Charles H. Freshman Company. Next, he became assistant sales manager of the Hammarlund Manufacturing Company, Inc. For a time after that, he operated his own company, Leon L. Adelman, Inc., exporters and importers. Out of this wide experience he developed a keen perception of modern merchandising principles and a sound knowledge of the "radio game." To quote Adelman: "Work is man's salvation— and mine!" RSA ELECTS NEW NATIONAL OFFICERS At the annual meeting of the Board of Directors held in Chicago, June 8, 1938, the following officers were elected to serve until June 1939: T. P. Robinson, Dallas, Texas — Pres. A. J. Theriault, Cleveland, Ohio — V-P. Donald H. Stover, Freeport, 111. — Sec'y Lee Taylor, Chicago, 111. — Treas. New Chapters that have recently completed affiliation with the RSA are Alton, 111.; Quincy, 111.; Fremont, Ohio; Steubenville, Ohio; Ogden, Utah; and Long Island, N. Y. In addition to the above Chapters, Danville, 111.; Cincinnati, Ohio; Indianapolis, Ind. ; and Tulsa, Okla., are all definitely considering affiliation with the RSA. We're growing and growing! Highlights of first RSA convention After three days of unremitting activity, the Board of Directors of the RSA completed the tremendous task of revising the by-laws, establishing the Code of Ethics, electing new officers, and choosing an emblem and slogan for the RSA, as well as other business of the organization. After long and serious deliberation, the Board of Directors fixed the amount of the national dues at three dollars a year effective January 1, 1939, in order that members can continue to receive all of the many benefits enjoyed in the past as well as a host of new ones to be added in the near future, and in order that the RSA might continue to be self-sustaining and entirely free from any subsidy or domination. An admission fee of one dollar for 1939, was also agreed upon. Duluth — Duluth Chapter voted u have one meeting a month during the summer. A very interesting meeting was held at which Mr. H. B. Eilers gave a very fine talk on "Facsimile". KSTP in St. Paul is on the air nightly with a facsimile program. Holyoke — A regular meeting was held on June 15th. A list of slow pay customers was made up and will be distributed to our members at our first meeting held in September. 52 Radio Today