Evening Star Newspaper, August 5, 1923, Page 39

NAVAL INVENTION CONQUERS STATIC Enlisted Man Perfecting De- |’ vice to Filter Sound Be- fore Receiving. TESTS PROVE SUCCESS| Inventor Has Been at Task for Eleven Years at 0dd Periods. The Scott clariphone, an acoustical device for the elimination of static,; will undoubtedly be one of the great- est advancements in radio communi- cation when perfected. naval radio | experts declare. Through its selec- tive action, the clariphone subdues mechanical sounds of a discontinu- ous character, susaining the continu- ous notes and uniformly pitched | sounds, thus enabling stations trans- | mitting long distances through static interference to be read much more casily Although the inventor, Chief Elec- trician William J. Scott, U S. N.. be- gan work on this static eliminator eleven years ago and filed an appli- cation in the patent office in January, 1921, little except the name of the filtéring__device has been made public. Since successful tests at the bureau of standards and at the naval radio central at Washington, naval officials have decided to release cer- tain facts regarding the unique ap- paratus in_the interest of those who are also fighting summer static in an_ effort to perfect radio communi- “While the clariphone is still in its experimental stage. the results ob- tained from the tests in radio central seem to indicate that the entire elimination of static may be hoped for in the near future,” one naval expert asserts Noted Improvement. Without going into the technical details, and the operation is compli- cated, the writer can vouch for the fact that the instrument works. While in one of the receiving stations on the third floor of the Navy building a few days ago, we tuned in NPG, San Francisco, which was heard faintly through bad static. By chang- ing from the telephone headset on the Tegular receiving apparatus to a pair of head phones connected with the clariphone, a. remarkable improve- ment was at once noted:; the static was reduced materially and the dis- tant signals in clearer and! sharper. Dispatches from the naval stations NBA. Balboa, and NPL. San Diego, were read with ease when the clariphone was connected in, whereas the dots and dashes were difficult to distinguish through the phones di rectly on the receiving set The apparatus consists of a large metallic chamber or tube about four feet long and eighteen inches in di- ameter, with adjustable ends. From the chamber eight smaller tubes or telescopes™ project radially in pairs Each “telescope” contains a watch- case telephone receiver used for in- troducing the radio signals received from the radio set into the receiv- ing chamber. The incoming sound is! then passed through the chamber acoustically, where it is broken up several hundred times. the inventor explains, by the internal arrangement. | \11 of the static is absorbed Ly over 10.000 separate pieces used in its con- struction. Lxactly how. is not di-{ vuiged. To a lesser degree, the sound | waves themselves are also absorbed | in the filtering process A weaker but a clear note is pick- ed up by four microphones, two on the top of the cylinder and one on each end. The microphones are con- nected in parallel to the primary of a transformer, the secondary being con- nected to a head set where the op- erator receives the outcoming signals after the static is eliminated. The sound of the signals may also be heard through two acoustical phones also attached to the top of the ap- paratus. When the outcoming sounds are found too weak, they may be am plified in the usual manner Mziy Patents Pending. Whatever the internal mechanism may be. th lizes it as a pi nd Mr. Scott has p: the United State countries. The erate for the o acoustical patent office reer invention ents pending in and several foretgn clariphone will op- imination of static | either in radio telegraphic or tele phonic communication. Mr. Scott also hopes to be able to eliminate all in- terference from nearby ations using wave lengths which are close to the wave length that the instrument tuned to. To date only one instru- ment is in operation., but nother with some improvements is under construction, it is understood. The inventor is now engaged in working out a practical method for producing a good audible tone to the sound waves which leave the four micro- phones mounted on the cylindrical chamber and are heard in the head- phones by thé operator. Many naval experts, who have examined and test- ed the clariphone. Mr. Scott savs, have made helpful suggestions. Chief Gun- ner J. J. Delaney and Chief Radiomen John Gilmore, E. H. Wilkinson and E. L. Cash are aiding Mr. Scott in perfecting the radio end of his inven- tion. With improvements now under way, the apparatus can be tuned to maXimum " strength wireless signal and minimum strength of atmospheric disturbance. which goes a long wa toward impwoving long-distance wire less communication The apparatus is not vet available to owners private receiving stations nor \eurs because of its cost, but future lopment _and production on a| large scale may make it a practical | adjunct to general radio reception. The Navy is particularly interested since apparatus of this sort could be used on its ships and shore stations, particularly “in the tropics where static interferes greatly with the communication Lighter sets for adaptation in airpla and suomarines for the elimination of various forms ! of noise are also being considered. SAYS DEATH SHOT ' FIRED BY ACCIDENT; i Br the Astociated Press | CLEVELAND, Ohio. August 4.—The | fatal shooting of Patrolman Dennig Griffin on May 11 Jast was re-engeteq for the jury in Judge Phillips’ court this morning. when John L. Whit. ' field. on trial charged with slaying Griffin, resumed his testimony and | told how he claims the death shot| was aceidentally fired from the offi- | cer's .38 caliber revolver while Griffin held it in his own hands. Whitfield | said ie became angry when the officer struck him on the arm with the butt | of the revolver which Grifin had pressed against Whitfleld's side while on their way to the station house in the accused man's automobile after | Grifin had arrested Whitfield on a | charge of stealing spark plugs ! Whitfield testified that Griffin cen- | sured him for the route he was driv- ing to the police station. | “He hit me on the head with the| gun,” Whitfleld testified | Later, when he slowéd up for a| bump gn the roud. Griffin ordered himi | to “stfp on it Whitheld testified. | “I didn't like that, and 1 grabbed his_arm. The gun was discharged with a big noi~” As he told the| story of the sho ting’ Whitfleld stepped from the witness stand und demon- strated his version of the shooting! @s he sat in a chair in front of the judge’s bench, one of his.attorneys sitting beside. Whitfield accounted for the three wounds on Griffiin's head by saying Le struck it against the dashboard of the automobile when he slumped dorward after the shot was fired. {it gives | WEAF's An epoch-making event in the radio history of Washington was the dedi- cation Wednesday night of the giant broadcasting station WRC of the Radio Corporation of America in the Riggs National Bank building at 14th street and Park road. This station and WCAP, the Chesapeake and Po- tomac Telephone Company's high- powered station, undoubtedly will serve to stimulate more interest in radio in the District and surround- ing country than all other broadcast- | ing stations in this section combined. Conservative estimates place: the local radio audience at 30,000.. It is safe to predict that when winter comes and radio interest is-at its peak this number will be doubled, providing. of course, the high-class programs now broadcast by WRC and WCAP are continued. All the officials of the corporation who could possibly get to Washing- ton for the opening were here. Among them was David Sarnoff, vice president and general manager; Dr. Alfred Goldsmith, director of re- search, and J. L. Bernard, manager of the information bureau. They re- ceived the large throngs of guests and conducted them through the mag- nificent headquarters, answering vol- leys of questions regarding the ap- paratus, etc WRC, correctly termed “the voice of Washington,” did not just happen. It Is the product of unremitting toil on the part of a multitude. The équipment was built in three of the largest electrical factories in the world and many special parts were constructed in two additional model shops. The design of the station equipment was co-operatively carried out by the engineers of the radio corporation and the General Electric Company,” with much valuable help from the engineers of the Westing- house company Some brief statisties will give a general idea of the amount of ma- terial which has been included in the station. Stretched over the Riggs building is a great antenna system, supported on 115-foot permanent steel towers more than 200 feet apart There are two transmitters in the station, to make sure that the service shall be entirely reliable. There is complete oscillograph installation, wher the control room engineers can watch the delicate sound waves being traced in lines of light on a spinning mirror and detect the ex- istence of any faults in the repro- duction which might detract the enjoyment of the audience. The studio has been carefully ar- ranged for high-quality production Many dozens of huge roils of felt and other special materials went into the walls of the studio to prevent rever- beration and to keep the music clear and distinct. It then took the inte- rior decorators months to complete tiie decorataions and install all furni- ture fixtures Cor rably more than 30,000 feet of wire went into the station instru ments and wiring. The station occu- pies a suite of five rooms. There are everal separate and distinct tele phone systems within the stati One is the usual Bell system, another is @ special intercommunicating tem between all parts of the station, and the last is the broadcast an- nouncer's system, whereby announce- ments may be broadcast from various points in the station if desired. At least eight principal voltages, rang- ing from 6 volts to 2.000 voits, are necessary to run the station, and steady sources of.supply for each of these have been providied. The dra®%ings of the general assem- Iy of the station look like veritable spider webs of hundreds of interest- ing connections. The radio engineers. who have done this work unobtru- sively and willingly. will find their £reat reward in the letter of appro- bation which it is hoped WRC will receive from its vast audience. WIAY Shuts Down. Coincidently with the opening of WRC, the Woodward & Lothrop sta- tion WIAY sent its voice over the ether waves for the last time.. WIAY discontinued its entertainment pro- grams some time ago, but up to Wednesday had been broadcasting daily market reports, base ball scores and bedtime stories. What disposition will be made of the station has not been determined It is believed, however, that it will be dismantled and sold Features of WCAP. Connection with a New York studio gives station WCAP an unusual va- riety of program which could not be obtained if it dep nded om itx studio in Washingten for its entire program One of the out:tanding features of radio b oadcasting is the Sunday eve- ning program of the Capitol Theater, New York. The evidence contained in thousands of letters proves that this feature is one of the most popu- |lar to be found on any broadcasting program The microphones and special equip- ment employed to “pick up” the Capi- tol Theater program have been de- veloped as a result of many month: of work by the Bell System engineers. Although "few broadcasting stations are able to transmit successfully the music of more than twenty-five or thirty pieces, the Capitol Symphony Orchestra consists of no less than eighty instruments. The program is sent by‘wire line to WEAF's studios at 195 Broadway, New York. and from that point. through special circuits, to station WCAP in hington. Other event: alzo are picked up from points outside WEAF's studio and through wire lines are sent to Washington Notable among these was the Wil- lard-Firpo bout, described from the ringside at Boyles' Thirty Acres, Jer- sey City, N J.. July 12 WCAP' wire connection with WEAF" udio provides something more than excellent program matter, WCAP the benefit of more than a vear of experience and study in the correct balance of program mat- ter which has been carried on by staff. Every suggestion criticism and approval of the radio audience is carefully noted and tabu- lated in statistics. which are used for the guidance of the program depart- ment. A proper balance of educa- tional matter. humor. popujar music, dance music and special . entertain- ment features are maintained and follod closely #he wishes of the radio audience. The public has little conception of the magnitude of the task of pre- paring and operating_the long dis- tance line from New York to Wash- inston. which carried the radio pro grams from WEAF to WCAP. The general idea is that an ordinary long- distance circuit is set up in the usual manner. the broadcast picked up by means of a microphone and sent to the radio station by wire telephony in the same manner as an ordinary long-distance conversation. As a mat- ter of fact, the requirements of radio broadcasting are very different from those of ordinary commercial speech communication. The telephone circuits required for the transmission of events to be broadcast must be especially pre- ared and balanced. It is necessary to amplify the currents which pass over ruch lines to an_ enormous de- gree before they can be transmitted Dby. radio telephone through a broad- casting station line noise must be eliminated, lest it be amplified and radiated. The ordinary long-distance tele- phone circuit ix not simply a pair of telephone wires—it is a channel of communication involving telephone repeaters (special vacuum tube am- vlifiers), loading coils, accurate transpositions of the line, test boards, signaling equipment and many other items. Frequently two pairs of wires afford the channel for three telephone conversations and eight telegraph cir- cuits. When used for radlo. broad- asting each of these channels must be re-rduted through other circuits <o that a pair carrying only a single channel of communication is avall- able for use in connection with broad- asting. circuit of the same grade is provided for use in case of any trouble from unusual induction or accident. A tele- graphic circuit also connects all points iavolved in the broadcast so that con- from i Consequently, every ! THE SUNDAY STAR, WASHINGTO! RADIO GOSSIP AND NEWS stant communicatior: may be maintain- ed between all the engineers who are taking part in the work. Three long-distance circuits having been set aside, it is then necessary, by ‘means of ‘cqualizing net works and other special devices known only these lines distortion-free for the re- production of speech and music. To accomplish this extensive test and adjustment is necessary. Critical lis- teners have stated that programs distant are just as clearly received as though the programs had been rendered in the studio. The fa-t that this is true is due to the skill of the | engineers and ‘the care ued in ad- [ justing the lines. | WCAP's New York studio is one of the finest broadcasting studios in the country. It embodies the latest de. velopment in studio acoustics, which were indicated by manths of study and experience with the studios of WEAF. The parquet floors are laid in pitch and insulated from the walls of the studio. The drapeéries are so i hung that they can be adjusted to Eive the correct decrease in rever- beration for the music to be trans- mitted For instance. with heavy brass bands less reverberation is d sirable than with a quartet or pianist, In every case the studio director can { make his corrections and adjustments without loss of time. The most important feature of these ! studios are the special arrangements designed to eliminate delays between numbers of the program and also the special methods introduced to make possible the perfect balance and placement of artists for the best radio reproduction. As a result the music heard by means of good radio receiving sets is of excellent musical quality The delays in programs are elimi- nated by the use of two studios. ‘While artists are preparing to broad- cast in one studio, the other is ‘“on the air,” so that when u number is completed the other studio is ready to be switched on instantl WEAF'S sound-proof announcer's booth gives a clear view of both stu- dios. A loud speaker in the booth Zives the announcer a reproduction of the performance in the studios as it is heard in the ether. Because of this arrangement the announcer can place his artists about the micro- phone so that the best possible radio reproduction results. Although it appears from the fore-. #oing that WCAP is deeply indebted to its connection with New York for'| the high quality of programs which it is able to offer the Washington audience, the arrangement by no means one-sided The Washington studios can be connected with WEAF New York in the same manner that WEAF studios are connected with the Washington studios. Not only will Washington enjoy the | Marine Band concerts through WCAP, but WEAF in New York will have the benefit of this feature for its own program. Other important Washing- ton events will also be relayed to New York from time to time The use of telephone lines in con nection with radio bhroadcasting has widened the scope and utlity of the radio telephone immensely. and WCALD will offer Washington radie listeners many remarkable radio features Baying a Loud Speaker There are four tests which may be applied to a loud speaker to deter- mine its efficiency. Does 1t produce clear sound at different pitches? Is there equal loudness of sound at dif- ferent individual pitches? In compli- cated sound do the individua] pitches get through in the same proportion that they have in the original sound? Schedule of Wireless N LOCAL STATIONS. NAA—Naval Radio Station, Radio, ¥ (435 Meters). 10:05 a.m. and 10:05 p.m.—Weather bureau report. WCAP—Chesapeake & Potomac Tele- phone Co. (604 Meters). 11 am.—Memorial services for the late President Harding at Calvary Raptist Church: sermon by Rev. A F. Anderson, assictant pastor: duet, “The Lord 14 My Shepherd,” by Mrs Hutchins, contralto, and H terer: favorite hymns of the Pres.dent, “Abide With Me.™ Face Looks Up to Thee” and { Kindly Light™ 8 pm.-—Memorial scrvices for the dead President at the First Congre- gational Church: sermon by Rev Jason Noble FPierce. paster. organ ipretude, “T Need Thee Every Hour': invocation; hymn. “Rock of Ages prayer. solo. *Dear Spirit, Lead Me. by Fred East; scripture reading, Luke xxii.24-27; praver, benedicticn. late “My Lead WDM—Church of the Covenant (360 Meters). 11_am.—Morning service; sermon by Rev. George H. Talbott of the First Presbyterian Church of Passaic, N. J. § pm.—Evening service: sermon by Dr. Talbott; sacred music. WJH—White & Boyer Co. Meters). % p.m.—Services of the Vermont Avenue Christian Church; sermon by Rev. W. H. Pinkerton; special music. DISTANT STATIONS. All Programs Schedul~d for Eastern Standard Time. WGY—Shenecctady (350 Meters). 9:30 am. and 6:30 p.m.—Services of the Methodiat Episcopal Ghurch. 273 KDKA—Pittsburgh (326 Meters). 10 a.m.—Services of the Shadyside Presbyterian Church. 1:30_p.m.—Children’s “The First Rainbow." 1:45 p.m.—Concert 8 p.m—Bare ball scores. 6:35 p.m.—Services of the Methodist Episcopal Churct. KYW—Chicago (345 Meters), 11 am—Services from St. Chrysos- tom’s Episcopal Church. 6 to 9 p.m.—Sisson Trio Bible story, Emory WFAA—D=allas (476 Mrters). 3:30 to 4:30 p.m.—Radio Chapel Bible clasa. 10:30 p.m.—Singers from the choir of the Haskell Avenue Methodist Church. l 11 p.m.—Dizzy Four Orchestra. WLW—Cincinnati (300 Meters). 9:30 am—Sunday school services. am.—Services of the Church of the Covenant. . WOC—Davenpart (484 Meters), 10 a.m.—Sacred chimes concert. 5 pm. 9:30 p.m.—Base ball scores. 10 p.m.—Musical program, P, §. C. 1 Orchestra. WHAS—Loulsville (400 Meters). 10:57 a.m.—Organ music. 11 %a.m—Services of the Avenue Presbyterian Church, 5 to 6 p.m.—Vocal and instrumental solos. Fourth WJZ—New York (435 Meters). 10 a.m.—Services of the West End Presbyterian Church. 7 p.m—"The Business Men.” 7:15 p.n.—Janet Bush Hecht, con- tralto. 7:45 pm. opcert. Mayor Hylan's people's WWJ—Detroit (516 Meters). 11 am—Services from St. Paul's Cathedral, 4 p.m.-—Schmeman's Belle Isle Park. 5 p.m.—News Orchestra. Band from In addition an emergency | WDAF—Kansas City 5 to 6 p.m.—Concert. WEAF—New York (402 Meters). 2:30 to 3:30 p.m.—Ilnterdenomina- (411 Meters). in telephone engineering, to render| rendered at points hundreds of miles | _BY RADIO TODAY Begz. | Church service - Analyst’s Talk for' Is the natural sound of the loud speaker minimized as much as pos- sible? One can easily distinguish between a pure sound of a definite pitch, such as that of a flute or organ. and thé complicated sourd, such as the volee, which is the blending of a number of pitches. A loud speaker to be per- fect must be capable of reproducing all musical tones and various pitéhes of the voice without any of its own characterlstic sounds. A loud sfeaker having a horn, diaphragm or vibrat- ing reed is sure to huve its own characteristic sounds: that is, it will vibrate itself at ceriain frequencles and cause distorted sound. When the tin horn vibrates the sound is said to be “tinny.” The natural sound of the loud speaker s dependeny to a great extent on the horn. A long horn gives a lower and more pleasing pitch. A ‘poorly adjusted amplifier will make the.best loud speakér sound bad. The most successful results are obtained by accentuating the low notes and suppressing the high ones. For this reason It is sometimes diffi- cult to reproduce a distant station clearly through a loud speaker. A loud speaker cannot be used with & crystal set or single-tibe detector. At least two stages of audio fre. Quency amplification are required for successful results. Where two or three stages of radie frequency am- plification are also employed a loud speaker can be operatéd in connec. tion with an indoor loop antenna otherwise the outdoor antenna i necessary for good results. Radio in War Games. Assistant Seccretary of the Navy Roosevelt has u unique idea for the {use of radlo in Army and naval war { games. He proposes the joint study | jand solution of a problem involving | combat operations, such as an over- | | seas expedition, by the war colleges | of the Army and Navy simultanesusly, every move being radioed to umpires meeting in the War or Navy depart- ment near their radio central offices. War games are old. but Col. Roose- velt's idea is to bring the land and sea post-graduate war schools into & closer relationship during peace times, when they have time to work out problems invelving both arms. Military and naval forces would be operated theoretically on paper, just as they would co-operate in time of | war. Since the Naval War College i lo-} | !cated at Newport. R. I, and the War| College of the Army in the capital, it] would be expensive and difficult to| bring all the students into one large || hall for the joint study of intricate || war operations.” Therefore. he sug- gests that the students remain in|| pective classrooms. where all such as books and tables of reference. maps. charts, etc., are available, and as fast as orders, plans and movements df troops or ships are made to radio the action to the board of judges sitting in Washington. The Army and naval officers acting as um- pires would have two charts in their meeting place and plot every move made by the students at cach school Upon the completion of the “game.” which might require a week or ten days. the umpires would decide which | of the schools had solved the prob- iem correctly or to the best advan- | tage. and announce the resuit by ra- dio fo tie students, 1t would not be a contest between the Army on one side and the Navy on the other. but would involve the handling of both sea and land forces. The naval class would be divided, one handling the red forces, the other the blue. while the Army school would also fight out the same problem, di- viding against itself. Such studies. | naval officials believe, would tend to familiarize the naval officers with the military end of war problems and Army students with the marine side of such conflicts, effecting cloxer ce- operation and understanding of com- bined national defense ews and Entertainmezt, services under the auyspices of the New York Federation ef Churches. 6:20 to § p.m.—Musical program di- rect from the Capitol Theater. 5 to % p.m.—Organ recital by Mau- ‘nre Garabrant. WIV—New York (405 Metern). 1:30 p.m.-—-Afternoon service by Dr. | | Ralph "Wells Keller, pastor of the |Crawford Memorial Church, with isongs by the male quartet of the church. 2:15 p.m {tura_sopranc | pom { 315 pm Elinor Walker. colora- Miss Walker. William Dawson, 3:45 pm--Mr, Dawson 5 pm.- “Bubble Book Rilph Mayhew tenor. Stories,” WSB—Atlanta (420 Meters) I 11351 am.—Services of the Presbyterian Church /6 1o T, pm -Twilight sacred con- cert ¥:30 to 10 p.m_—Services of the | Wesley Memorial Church | STANDARD OIL LOSES. Must Pay Taxes on Its Profits in Virginia. Special Dispateh to The Star. RICHMOND, Va, August 4.—The Standard Oil Company hast lost an- other case in the Virginia court {one involving taxation. The case {was tried in the corporation court demand of the state for taxes oni jthe income on business done in this| state. ¥ The company paid the tax underl [ protest and then carried it to the | courts, where Judge Richardson d cided in favor of the contention of [the state revenue officers. The com- ipany tlen appealed to the supreme Court for a review and the Sudges | jhave refneed to disturb the verdict | ! which Judge Richardson facwn i The amount { £15.000 and involved was nearly the companv took the fjrecaution to pav in time to escape penalty. Tt would have been refund- ed _had the state lost — e e O e | %- E - Hear Your New Station’s Program With the marvelous “DX Sure- Fire" Svnthetic Crystal-tested, guarantesd and old onl Ssaled tubes. Ideal for t flex circult. Indorsed by N. Y. | Tiibune and Mail. §0c Mounted At Yeur Desler's or Direct Postpaid. Specialty Service Co. 852 Pacifie Bt., B'klyn, N. Y. We have ‘an iateresting propesition for live dealers. Stop By At Night #er Radiola IV %%... New Tubes—UV-19 & WD-12 Specials &350 Tuad fny 1550 =RADIO=} : SALES $TUDIO } 1403 ParkRoap WasinaTon,D.C, Authorized Dealers OPEN TO jfor Richmond ard grew out 6f the | | 1 handed { | Tune in with the New and Powerful WRC and Hear the Marvelous Concerts *142*° Westinghouse Radiola rc REG. U S, PAT, OFF. RECEIVING SETS 69 With All Necessary Equipment Corporation of America Complete Set as Sketched Westinghouse Radiola RC 3 - tube Regenerative Receiver. 3 Westinghouse WD 12 Radiotron Vacuum Tubes. Plug for Head Tele- phones. 100 feet of Aerial Wire. 2 Aerial Insulators. 1 pair Brandes Superior 2,000-ohm Head Tele- phones. 3 Dry-cell Batteries. 1 Lightning Switch. 2 2215.volt B Batteries, or 1 45-volt B Battery. Ample wire for all con- nections to set and ground. The Dynamic Power of Co-Operation Two heads are better than one. They are even better than two. If that is not a physical fact, it is a far more important thing—a psychic fact. The enthusiasm gener- ated by mutual association makes them a power beyond mathematical calculation. We have told you our association with Gimbel Brothers, New York, and a score of America’s great stores in achieving this Radiola deal. It could not have been done otherwise. Here is a standard prodyct from the Radio Corporation of America—at less than half price. People are talking about it from Bunker Hill to Puget Sound, from Sault Ste. Marie to El Paso del Norte—and they are buying. . Finally, we have plenty of machines for immediate delivery. How long that condition will continue is a matter of pure guess! In the Air Every Night The concerts now being relayed from station WEAF, New York, over WCAP, and broadcasted in Washington, are delightful. . One may hear the wonderful Waldorf and Capitol Theater orchestras as if they were in the next room--amusement and ‘entertainment without end! Experts to Advise Expert men, crack Radio professionals, will be here to advise, free of charge, regard- All salesmen are profes- sional Radio men, employed specially for the Arrangements for installation may ing installation. purpose. be made at time of purchase. Pay as Low as %5 To widen the opportunity and to put Radio in every home, the Sets will be delivered on a payment of $5. Six per cent will be charged on transactions 2x- tending over a period longer than 90 days. Selling at 618 and 626 F Street and in the Main Store - mar The [lech “(O. mhaF