Evening Star Newspaper, November 15, 1925, Page 48

$4 PER WEEK Is All You Need To Pav CROSLEY ~hres.Tube Set Complete with set, 3 tubes, “A” and “B” batteries, loud speaker and antenna 545 equipment. HAVERFORD CYCLE SALES CO. RADIO DIVISION 522 10th St. N. W. ~ 3}~ —~ e~ EAR this latest master- piece of the originators | and oldest makers of loud speakers. It leads through- out the world in sales and j| has won the favor of musi- cally critical people because of unrivaled clarity and deep, full life-like tone. Six models, including console units, $12 to $42.50. Write for **Amplion | Pedigree” and dealer's address. AMPLION CORPORATION OF AMERICA Suite 23. 230 Madison Ave., e Territorial Representatives: 8. BYRD & €0, Control Receiver E do not ask you to believe that Ther- miodyne is the best radio receiver in the world merely on our “say so”. But,when you have heard Thermiodyne—compared Thermiodyne—you will know why we challenge any other radio receiver, no matter what you pay for it, to equal the per- formance of this wonder- ful Receiver. Arrange for demonstration through any Authorized Thermiodyne Distributor Model TF5 ... .. $100 (without accessories) Model TF6 . . . . . $150 (without accessories) Other Models up to $275 Trade in your old Receiver Cenvenient terms if desired THERMIODYNE RADIO CORPORATION 1819 Broadway, New York City Carroll Electric Co., Inc. Exclusiye Distributor 714 12th St. N.W. Main 7320 INTEREST OF RADIO PUBLIC IS GUARDED Recent Conference Here Had Welfare of Listéners Con- stantly in Mind. BY CARL H. BUTMAN. With the conclusion of the Fourth Rational Radio Conference the radio public heaved a sigh of relief at the action t and the recommenda- tions made to the Secretary of Com- merce in their behalf and in the in- terest of the industry in general. No more broadcasting stations will go on the air until such time as there are suitable channels released; no | more stations will be forced to divide time or wave lengths; the broadcast- ing band was left as it has been be- tween 202 and 545 meters; and efforts to eliminate all forma of interference were advocated—in resolutions adopt- ed, almost unanimously, by a confer- ence representing every phase of the industry. This conference, cited as the largest and the most satisfactory of all, ended with the adoption of a resolu- ton thanking Secretary Hoover for s interest, and promising him the support and co-operation of all branches of radio and its allled in- terests. In reply, Secretary Hoover thanked the conferees in turn for their close co-.operation, which, he sald, showed that this industry was the first to administer to its own needs through practical “self gov- ernment”—setting an example for other industries. Smoother Sailing Promised. Certain of the recommendations, when worked out into regulations by the department and laid down in legislation by Congress, it is believed, are indicative of far smoother sailing for the many radio craft on the etherial seas in the future. Among the sallent points touched upon—some of them felt to be drastic—are the following: If, in the opinion of the Secretary, there be no public need for additionai broadcasting stations on the air, he will not license any more, even it stations are now complete and await- ing a channel. This position may be taken pending action of Congress. It will be considered a hardship by some desirous of entering broadcasting, but Is held a benefit to listeners. Throughout the whole conference the keynote was “service to the radio public.” The manufacture and sale of radiating recelvers was opposed by the conference, it being pointed out that although control of some types of oscillating receivers was pos- sible and that education was needed, the commlittee on interference was anxious at some early date to pre- vent the further manufacture and use of this type of listening device. While opposing this drastic action, Powell Crosley suggested that since there were three types of receivers which might cause such intereference, he was willing to let the resolution stand, Spark sets used by amateurs were discouraged, as well as those in ma- rine use, in an effort to further clear the alr. Arc apparatus, it was held, might be further improved and the use of high-power only when neces- sary was advocated. Suggestions for, Bill. While no attempt to draw up a radio bill was made, a number of sallent features were outlined and will be presented to Congress through Chairman White of the House radio subcommittes. These recommenda- tions covered licensing of stations, op- posed a monopoly in radic communi- cation, and suggested an appeal over the Becretary of Commerce's decisions, although vesting in him the power of administration in radio matters. Five years was proposed as the time of du- ration of stations’ licenses, and es- tablished fees ranging from $25 to $2,000 per station, were advocated. Any form of Government censorship was objected to, and, as radlo broad- casting is not felt a public utllity, the question ‘Of rates and fees WAs not considered a matter for legislation. Secretary Hoover registered himself as opposed to the granting of 80 much power upon a Secretary, or rather an officlal Of the Government, without having some form of appeal from his decisions, which suggestion will un- doubtedly be incorporated in any leg- islation. Contrary to the gerneral opinion, the alloeating eommittes accepted the present broadcast bands without change, but urged that special con- Batteries. THE PRESENT GRAND OPERA EVERY WEEK FOR INVISIBLE AUDIENCE ‘ihe WEAF Grand Opera Company, a weekl, WTAG, WJAR and WCAE. Seated, left to right: Elsa Ward, norrlnu: Olive_ Cornell, con- stations, including W00, tralto; Devora Nadworny, contralto, and Elvira Boni, lyric soprano. Standing, left to rigl ‘K.Huuppe die Benedetto, tenor, and Willia Tucker, b feature on the program of WCAP, as well as & number of other ht: George Walker, basso; itone, who is leaving the group to appear in a production of ‘The Student Prince.” The company’s production tomorow night will be a tabloid version of Leoncavallo’s “I Pag- liacc sideration be given the various Gov- ernment departments in the dissemi- nation of their particular news. In dealing with ghe complicated problem of advertising by radio the conference expressed itself as unquali- fiedly opposed to direct methods of advertising, and called upon the mem- bers themselves to keep radio as free from this practice in the future as it had in the past. It was decided that the burden of keeping the air free of direct advertising should fall upon the broadcasters rather than upon the Government and that no legislation was necessary at this time. Classes Are Discontinued. It was recommended that inasmuch as the distinction between class A afd B stations is purely artificial that this terminology should be discontinued. The licensing and classification com- mittee also suggested that a permit for the construction of a statlon should be necessary before the build- ing operation was commenéed in or- der that the owner might bée assured of a wave length when the station was complete. The Department of Commerce was urged to decrease the number of sta- tions by refusing to grant any more wave lengths and likewlse refusing any more operating permits until such time as the mortality of stations had created a demand. ~This resolution was passed In different forms by sev- eral of the committees and accepted unanimously by the convention. A blow was dealt the rebroadcast- ing of programs without the specific consent of the originating station and a warning sounded against the prac: tice of speculation in wave lengths. It was urged that the department scru- tinize the sale of broadcasting stations in the future to dlscourage any at- tempt to speculate in wave lengths, which are becoming more and more valuabie, now that the number of sta- tions 1s to be limited. In dealing with the marine radio situation, it was recommended that the users of radio transmitters be encouraged to install transmitters of less broad emlssion. This was assured by the steamship authorities, who were replacing the spark equipment with apparatus having less broad emission, it was explained. Left to Govern Themselves. Matters dealing with the amateura were not changed to any extent. They were urged to observe the silent hours, but were otherwise left to govern themselves on their present: wave as- signments. It was felt that the matter of inter- ference from.radiating receiving sets should take the form of persuasion rather than coercion, and that such in- terference could better be eliminated by giving publicity to methods.of op- SK any listener what stations come in most clear- ly, and the chances are he’ll head hislist withsome of the 204 BATTERIES frequently make such a surprising difference that you’d hardly be- lieve the set is the same., 1. They last for years.. 2. They're re- chargeable. 3, They're easy o inetall. 4, They furnish the steady current that your set needs to do its best job. Sales and Service through The Willard ' Battery men erating these receivers in such a man- ner that they would not radiate. Pub- licity of this kind had accomplished much during the past year, but this, it was felt, must now be more em- phatic to accomplish the desired re- sult. This objectionable feature to radio had been greatly reduced in Canada, the committee pointed out, by the circulation of pamphlets to all the receiving set owners. The committee urged the press to publish such arti- cles as would help to educate the pub- lic in_the use of radiating receivers and the proper manipulation of sets which through changes made in fac- tory-made equipment might be made to radiate. Powell Crosley, the president of one company, objected to the drastic word- ing of the paragraph which the discontinuance of manu radiating sets, explaining that several sets which were not radiating when they left the factory might develop a radlation by changing the style of tube used, und 8o fall in the class. Mr. Crosley felt that manufacturers should have an opportunity to bring about improvement in this phase of the work rather than be ruthlessly destroyed. He withdrew his objection to the wording, however, and the con- ference accepted the report. The com- mittee on interference also endeavored to help the listener by urging the broadcasters to adhere strictly to their wave lengths, stating that those who had not equipped themselves with ma- chinery to constantly check their fre- quency, should immediately do so. The committee pointed out that harmonics, 80 objectionable to the listener-in, might be avoided partly by having the operators refrain trom using more power than was necessary. This fault should be removed by management— through a closer supervision, it was pointed out. The interference committee ex- pressed the hope that the co-operation between the broadcasting stations and the power companies would continue to the end that the interference caused by these companies would be elimi- nated. Some of these cases were pos- sible of detection locally without the assistance of the department, and the broadcasters were urged to assist the inspectors in those instances. It was also believed by the committee that many of the interference problems could be solved by the formation of listeners clubs throughout the coun- try, and it was urged that these be formed and encouraged. This commit- tee also opposed the further issuance of licenses at this time, when the con- gestion Is so acute. The legislative committee pointed out that the existing Federal statutes are not adequate to permit proper ad- ministration of radio_communication activities and urged Congress to pass necessary leglslation as quickly as ble. SUNDAY STAR, WASHINGTON, D C., NOVEMBER 15, 1925—PART 1. THREE-ENGINED AIRSHIP IS TRIED OUT IN ENGLAND Pilot Demonstrates That Two Motors Will Run Craft if Third Goes Wrong. By tho Associated Press. LONDON, November 14.—The first of several three-engined air liners to be placed in commission for the cross- channe) traffic next Spring, when the rush of tourists from the United States begins, has been tried out at Croydon flying base, among the 11 passengers being Sir Eric Geddes, chariman of the Imperial Airways; Handley Page and other aeronautic experts. It is A genvine long range radio set — wtthe priceof atoy. An improve. ment on onetube Crosleys that have reporied_trans-Adantic re- Cronley “Pop” vou. begi Tadio right. At ensborived Crodey dosiers. te Trickle Charger id e A9 o S 10 from the light 'I'hhchmmybegunnmedmanvaelt radio “A" battery of 30 ampere hour capacity or more and left permanently on chu% b et s jways at automatically keeps the Used in this manner it charge. It converts your“A"battery into a permanent “A” power unit that operates from the light socket. With any smaller battery {4 volt or emall 6 volt) this charger may be used as an intermittent charger of the usual type, or as a trickle charger if a resistance haddedmcuxdcwnduchr:l : ng rate. used as a trickle charger, a switch may be added to cut out the charger during operation and turn on Balkite “B” when the set is turned on, thus iding an entirely automatic current supply for circuits. Like all other Balkite Radio Power Units the Balkite Trickle Charger is entirely naiseless, is a per- manent piece of equipment, with no bulbs or moving parts, and nothing to replace, break or get out of order. 54 in. long, 24 in. wide, 5 in. high~—fits in your dry cell compartment.. Charging rate .4 to .5 amperes. Current consumption 1/10¢ per hour. Operates from 110-120 AC 60 cycle current. Special model for 50 cycles. Sold by leading radio dealers everywhere. Manufactured by FANSTEEL PRODUCTS COMPANY, Inc. North Chicago, Illincls ‘FANGTRRL Balkite Radio PowerUnits e 2 — . ook S “Wholesale Distributor * Doubleday-Hill Electric Co. Main 4681 Radiotron dry battery tube fog both detec- tiol fication. No matter what set you buy, be sure the dealer puts in genuine Radiotrons: UV-199 $2.50 UX-199 $2.50 UX-120 $2.50 UV-201-A $2.50 UX-201-A $2.50 UV-200 $2.50 $2.50 $2.50 3250 $2.30 $6.50 $9.00 Rectrons: UX-213 _ $7.00 UX-216-B $7.50 AVUX" 0" WX sube is the samm a5 the corresponding , excigt in sl dasign of the bass. claimed that the three-engined air liners are safe and to demonstrate this the pilot shut off one engine, and went higher on the remaining two motors, Then he demonstrated that if one of the engines failed it could be repaired in the air and started again. * The machine has a span of 69 feet and is 60 feet long. In addition to a pilot and a mechanic she carried 14 passengers at a maximum speed of 116 miles an hour. Found Him Out. From the the Madrid Buen Humor. Wife—If I were to die what should you do? Husband—Oh, would yourself. ‘Wife—You wretch! suspected it. the same as you I have always Tuesday, November 17 Commencing 10:30 A.M. Fada, Federal, Sterling, Cros- ley, Amrad, Freshman and other sets in— Cabinet and Console Types, Thompson Kits, Headphones, Speakers, Accessos N VIEW MONDAY AFTERN WESCHEER'S, 920 Penna, ON ve. The SAA SPSPEAKER volume with tone quality THE Saal maintaing its tone with any volume. It has no wood, no tin, no com. position — nothing to warp, crack or deteri- orate. The bell is of genuine Bakelite. $25 at your dealer’s, Distributed by National Electrical Supply Co. 1328 New York Ave. N.W. H. G. SAAL COMPANY 1800 Montrese Avenue - Chicage measuring da silament In avacuume,, FILAMENT one-sixteenth of an inch WD-12 n and ampli- too short might cut your vacuum tube’s life right in half. It is therefore most impoftant when you buy a vacuum tube —the most vital part of your set—to know that the filament is scrupulously accurate in length. In the RCA Radiotron, the length of the filament is carefully tested. How can anyone tell that soldering the filament into its place hasn’t pinched off a speck of its precious length? Not its fresh- cutlen, when must be measured, butits length ly mounted, welded, and finished inside a sealed-up vacuum tube. Hold a Radiotron in your hand, and look inside for the tiny thread of filament that is four times as fine as a human hair This filament is measured, in its place the tube, by ingenious electrical ap; ide tus set up in the RCA test laboratories. This is but one of the intricate and accurate tests of finished Radiotrons that mean aniformly long life for all tubes that carry the name Radiotron and the RCA mark. Look for these when you buy. The only way to know beforehand the exact per- formance a tube will give, is to know that it is produced by RCA! RADIO CORPORATION OF AMERICA CHICAGO NEW YORK CA-Radiotro MADE BY THE MAKERS OF RADIOLAS RADIO QUALITY Radio Satisfaction And Our Unusually Low Terms Satisfy Everything That Is Good in RC 715 12th St. NW. DIAMOND & GRID BATTERI M Stree! GEQRGETOWN DOUBLEDAY-HILL ELECTRIC CO. Radio A and B Socket Powers, for Operating Radio Outfits Direct from House Lighting Current RCA-Radiotron || RCA-Radiola Wholesale Distributors NATIONAL ELECTRICAL SuPPLY Co. 1328-1330 N. Y. Ave. Washington, D. C. Phone Main 6800