Evening Star Newspaper, November 22, 1925, Page 39

PONTIAC STATIONS SET GOOD EXAMPLE WIR-WCX Vie With WEAF in Maintaining Constant Radio Frequency. A new puace-setter to vie with WEAF, New York, in the matter of maintaining a constant frequency has developed in the East in the joint broadcasting stations WIR-WCX, at Pontlac, Mich., according to the last Teports of the Bureau of Stundards. Although not mehsured as frequently as the waves of plant checked perfectly in the five tests the bureau engineers made of its broadcasts. WEAF, which has shown no devia- tion from its assigned frequen more than was measur tiines hout being found off wave length. Other prominent st tions which maintained their fre- quencies with sufficient constancy to be cons stations were WRC and WCAP, both of Wi ington: WSB, at Atlanta; WBZ, Springfield; WGY, Schenectady, and KDKA, Pittsburgh. More Care Urged. It is expected that in the future stations w their trans as the nended this, Hoover bring has been cl s for much of the prev; ng interfer- ence and the inability of listeners to tune in on distant stations. _ The new radio bill to be introduced in Congress is expected to include a proviso for cancellation of the licenses of those stations which fail to adhere 0 their assigned frequencies. Means of Control. In this connection, a piezo erystal is being studied by engineers at the Standards Bureau as a means of con- trolling the frequency of tra : Apparatus embodying the c 4 s been perfect, for use of the Depart- ment of C¢ adio inspectors in “pol the e nd is at present boratory reat Lakes. It two instruments, both be- ow power oper- ated by dr: In order that the io world in gen- eral may share in this work det infornation regarding the apparatus with specifications for its construc- tion will be furnished interested par- ties by the bureau upon request. SHORT-WAVE BAND CHANGES EXPECTED Radio Experimenters Plan En- tensive Research Work This Win- ter in Long-Distance Field. ch work s and engineers e program of dio amater this Winter. An e ultra-short n is being mapped out by the Relay League, and other experimental work will be done by the United States naval radio engineers and in the search laboratories trical companies, at the recent radio co regulations are expect soon dividing the wave bands below five meters into two sec inz the lengths from 4 7196 meters for expe and the bamd from .7496 to . the amateurs. The latter band takes in the frequencies from 400,000 to 401, 000 kilocycles. In addition to that. it is expected that the 16 3 nd will be given ove al work in general, i ng reserved for beam tran is now the case. Other that are ex- pected in conformity to the recom- mendations of the conference would widen the 16000 to 18,000 kilocycle band for Government point-to-point service, and also open the 11,400 to 14,000 kilocycle band for this work. More thorough co-operation by the amateurs and engineers in Europe, Asia, Afl and South America i also being arranged for the wave work this Winter, and mes: transmitted and heard halfway around the world may become commonplace experiences. Post for “Solemn 0l1d Judge.” George Dewey Hay, “the solemn old judge,” now k _in Dixie as an- nouncer of WSM, Nashville, will be one of the guest announcers who will talk to e world from th studio during Atlanta’s fi radio exposition, December 7 to 12, Roof of the World. From the Kausas City Times. The name Roof of the World is given by many, including the natives of the region, to a series of broad val- Jeys that traverse the elevated and extensive plateau country of the Pamirs in Central Asia. This lofty tableland has a mean elevation of 13,000 feet and covers an area of about 37,000 square miles. Some of the mountain peaks attain tion of more than 000 feet above sea level. The region this year was visited by the scientific expedition of the Roosevelt br s, who there hunted for ovis poli, a rare mountain sheep. his is the famous Crosley Super- ‘Trirdyn Regular which, with only three fubes, equals — and ofeen out- perfoms any set on the arbst! The * very finest that radio in vol- “ume, disance, and hate mew Jow price.. At awthorised Crosley deslers. i GROSLEY BYTER COSTS an eleva- | THE SUNDAY STAR, WASHINGTON, D. John Smith and His Radio BY FREDERICK C. RUSSELL Car owners throughout the world have followed John Smith in his daily mororing—and have benefited thereby. Ncw he has taken up rodic, and is willing that his fellow fans should be amused and profit by his evening erperiences. Smith has a faculty for “finding out things,” 80 it will pay radio devotees to follow him in The Sunday Ster each week. No. 40: Caring for the Set. It was a surprise to Smith to realize one evening that his set wus not working as well as it did when new. It was during a period of fa- vorable radio weather that he made this discovery, and the slump in per- formance was, therefore, all the more pronounced. “I should have bought " he complained “Maybe you're better off than you think,” I suggested. “Suppose you had bought an expensive set and treated it the way you treated this one, you would have been minus just that much more money.” Smith experienced a second shock when he realized that in delving into the theory and operation of radlo eiving sets he failed to sense the need for giving his own set reason- able care and attention. “You're right.” he e my car went back in a year's time T'd certainly consider the effect of my habit of neglecting it, but with the radio set I've assumed that the human element wasn't necessary. Why, now that T realize it, T don't believe I've ever even dusted off any of the sockets or condenser!™ Stepping over to the set 1 touched e of the dials and found that it was loose. Pulling out the loud speaker plug 1 found that one of the connections was half The speaker attachment of the phono- graph, which Smith was using in place of a regular loud speaker, was loosely connected to the tone arm. “Looks to me as if this set needed a good polish and general over- hauling,” 1 told Smith. “You have your piano tuned regularly and sel- dom complain about the cost. You do vour own tuning of the radio set and apparently do not set a very high standard for the work.” Smith Cleans Prongs. Before I had finished my ser- monette, Smith had removed one of the tubes and was busy cleaning off the prongs with a lead pencil eraser, polishing them afterwards with a clean, soft cloth. Before re- placing the tubes he made sure that the prong holders of the sockets made good connection Noticing so much dust inside the box, Smith next started blowing his breath into the mechanism—that is, until I interrupted him, suggesting that such procedure would start rust or get a little moisture in the wron. place. The way to do it, I explained, was to_use a soft brush, and since this Was not available we compro- mised by blowing the dust out with the hand pump from the car. “I'd like to know how all this dust got into the s Smith demanded. “It has a top and the lid is always down.” The secret, however, was out when Smith lowered the lid and found that it had warped to a polnt where it was always up about a quarter of an inch on one side. The obvious remedy was to use the top of the set for a book rack until the lid resumed its orfginal position. In inspecting the w Smith amined _the " batt switch h enables him to throw out the E and throw in battery charger at will. He foun that the switch could stand a thorough cleansing so that the contacts would be bright. It was plain that he was making a mental note of the fact that the care an industrious motorist gives to the spark plugs and breaker points is more or less duplicated in the care of a radio receiving set. a better ing Finds Loose Binding Post. In going over the binding posts Smith found one of them quite loose and there was a rather carelessly made connection in which a fraved end of a wire nearly touched the wrong binding post. He recalled hav- ing made that hasty connection one evening when he was in a hurry to catch u certain program. As for testing for loose connections that was merely a matter of operat- fng the set and then tapping the icion. We did not hear anything out of the ordinary, but it was evident that trouble would have been detected by odd noises in the loud speaker. Testing the “B” batteries—the dry cells in Smith's hook-up—Smith found that voltage had dropped 2% per cent, the point at which they should be replaced. Incidentally, he learned to test the batteries while the set is being operated so that the truth about the batteries could be learned while they were under load. Dry batteries, I told him, also have a habit of delivering current less smoothly after they become old. “It ought to work all right now.” Smith said, after we had gone over age battery, hooked up the batteries and satisfied our- that the tubes had neither damaged through excessive current nor used beyond their normal life of 1,000 hours. “Provided the antenna is as good as vou made it many months ago,” I stipulated. “Think of all the storms we have had lately and the many things that could happen to the wave- intercepting system. For all you know the leadin might have been disturbed during the housecleaning.” en the house was being Smith added, suddenly re- calling a likely reason for his poor reception. All of which tended to convince him that few radio sets are any more efficient than their owners, Next Week, No. 41: Puzzled by Yow Loss. (Copyright, by the Ullman Feature Service.) STATI"N WHT TO PROMOTE NEW TYPE RADIO PROGRAM Production Department With Thea- trical Personnel, Headed by John Clark, Is Established. Special Dispatch to The Star. CHICAGO, November 21.—Estab- lishment of a radio production de- partment with a theatrical personnel directed by John Clark, nationally known scenario writer, is a new de parture by station WHT to influence & new type of radio program. The response from the radio audience to this new type of broadcasts has con. vinced Director Charles Burke that the hackneyed order of program is {passe and that stations to meet com- petition for popularity must elevate and distinguish their programs by a new order of broadcasts. The WHT production department will prepare a serles of radio novelty presentations with all-star casts scheduled twice weekly. The mem- bers of the production company are on the payroll of the station and sub- ject to rehearsal call. All rehearsals are supervised by George Junkin, manager of the Drama of America. To lend the- atrical atmosphere to the presenta. tions all casts will be costumed. Radio noveltles written and pro- duced over WHT by Production Man- ager Clark are “The Listeners,” Kip- ling’s “Road to Mandala “West of the Golden Gate,” *“North of Montreal,” “In the Land of Cotton,” “A Trip to the Far East.” Many Interesting originations are promised by Mr. Clark as features of the Win ter program from station WHT. Concert Series Planned. The first of the series of musical concerts by the Copley Plaza Orches- tra under the direction of W. Edward Boyle will be sent out on the WBZ wave Sunday, November 29. — . Will Radio Thanksgiving Music. A special Tranksgiving program will be broadcast Thursday night by station WJJD, Mooseheart, Il Kiutus Tecumseh, Indian tenor, will take a leading in the Other Radio News on Page 40. RADIO CONVENIENCE Operates from the light socket ADYNE I11 is not only a supetlstive radic set. It is a complete receiving ine-ilaison. It is installed simply by pl»- into a light socket. From thmonhitfl.‘_‘.}ymopal‘l’z:hwpnfi!flpwuby turning a switch. the abinet. These power units urnish all carrent from the lighting circuit. They are sbeolutely relisble, and guaranteed. There is nothing moee to buy but the aerial, no farther expense except bousehold current—1/sc per hour of use. Price complete, includ- ing matched tubes, $285. DERESNADYNE II offers to those who already own power and speaker equipment the same remark- able performance as Deresnadyne I, yet costs little moxe than an ordinary set. Specially peiced at $125. Distributed by Robert C. Rogers Co., 1223 Eye St. N.W. cAndrews Radso Receiving Set ANDREWS RADIO CORPORATION ~ 1414 S WABASH AVENUE - CHICAGO District Oficc—Borden & Moynelo, 1336 New York Ave. C., NOVEMBER 22, 1925—-PART 1 atched~Unit Radio INSTRUMENT + TUBES + REPRODUCER + ACCESSORIES Buy Your Radio From a Big Respomnsible Manufacturer A responsible manufacturer means more than simply a manufac- turer who is honest—who does not cheat you. It means a manufacturer who has invested millions of dollars in experience—who has made good— who has won a great name and an en- viable reputation and must uphold it. Stewart-Warner is such a man- ufacturer. The proof is that today over twelve million people are satisfied users of Stewart-Warner products. Why take a chance in buying your radio from a manufacturer who has not had time to prove worthy of your confidence? You know that a Stewart-War- ner Matched-Unit Radio is a piece of dependable merchandise. The name is a guarantee of that. You know that it is sold only by our Blue Ribbon Representatives—the cream of the coun- try’s radio retailers—men who guaran- tee you 100% service and complete satisfaction after this radio is installed in your home. The day of taking a chance in buying a radio is gone. It is no longer necessary. Call on your nearest Blue Ribbon Representative today for life- long radio satisfaction. You will find his name in the list below. A RELIABLE MANUFACTURER + RELIABLE MERCHANDISE + RELIABLE REPRESENTATIVES = YOUR RADIO SATISFACTION ‘Washington, D. C. Automobile General Service Company, Brentwood. Davis & Child, 1110 Fourteenth Street N.W. H. A. Garren, 907 H Street N.E. Georgetown Radio Shop, 3320 M Street. Havenner’s Sporting Goods Store, 1203 Good Hope Road S.E. H. B. Leary, Jr., & Bros, 1612 You Street N.W. Fred S. Lincoln, Inc., 822 Thirteenth Street N.W, K. C. Sexton & Company, 631 Pennsylvania Avenue S.E. E. B. Thompson, 1436 Park Road N.W. Woodridge Repair Shop, 2045 Rhode Island Avenue. Virginia Alexandria—H. B Steiner, 405 King Street. Culpeper—Culpeper Motor Company. East Falls Church—A. M. Heinbuch, Fourth Street, Lewey P. O. Herndon—Herndon Garage, Eldon Street, Luray—]J. T. Campbell Lynchburg—Williams-Thornton Electric Company, 607 Main Strect Maurerton—Quality Music House. Petersburg—Pecrless Battery & Ignition Co, 108 North Main Street Purceflville—Little Motor Sales. Richmond—A. R. Tiller, 1308 West Broad Street. Maryland Baltimore—Arcade Electric & Radio Shop, Arcade Building, Hamilton Street. J. F. Argabright & Bros,, 106 Evans Chapel Road. Goldsmith Bros., Gilmore and Baltimore Streets. Isaac Benesch & Sons, 549 North Gary Street. George H. Pochlman, jr, 3341 Frederick Avenue. Southern Hardware Company, Trout’s Music Shop, 511 South 319 East Fort Avenue. Third Street. Cumberland—Automobile Access. Co., Baltimore and Mechanic Streets. Great Mills—T. Leonard Coombs, ‘William L. Galloway. Laurel—Harry S. Green, 119-14 Washington Boulevard La Plata—Central Garage Meadows—Marlboro Auto Sale. STEWART-WARNER PRODUCTS SERVICE STATION, Wholesale Distributors, 1117 Fourteenth St. N.W., Washington, D. C. ._Model 308, S (above] Cabinet ‘6‘! to &s Console Models from 8175 to $450 STEWART-WARNER SPEEDOMETER CORPORATION 1826 DIVERSEY PARKWAY, CHICAGO, U. S. A. TWELVE MILLION PEOPLE ARE TODAY USING STEWART-WARNER PRODUCTS 3 : % &