Evening Star Newspaper, December 20, 1925, Page 51

={ bl TRANSEGRMERS Follow the lead of theLeaders Because leading set hailders raquire the finest tone quality and absolute nniform- in transformers, - = hordarsons than ail com- veritivemakes. E build or replace with T ad!tionally guar Dest dealers. 3-1.84:6-1.84.50. P Interstage Pos. THORDARSOK ELECTRIC MFG. CO.. CHICAGO '| John Smith and His Radio BY FREDERICK C. RUSSELL Car owners throughout the world have followed John Smith in his daily motoring—and have benefited thercby. Now he has taken up radio, and is willing that his fellow rans should be amused and profit by his cvening experiences. Smith has a faculty for “finding out ()ings,” o it u-’m pay radio devotecs to follow him ln The Sunday Star each weel:. No. 44—Tuning Different Sets. If there was any static the other night Smith wasn’t troubled by it. I As @ matter of fact. nothing on the | that simplicity in controls -usually iir disturbed him because he wasn't [£ves with better sets. Even the older setting anything at all. Superheterodyne receivers with thelr He had sent his good set back to [1Wo control dials are comparatively the dealer for a little service work |Simple, One dial operates the tuner, which he expected wouid mnot only | OF Station selector, while the other is improve the set, but lengthen its life, | the heterodyne control. The same Not to be deprived of un evening's | Station wlill often come in at several tertainment, he had brought Smith |Points on each dial. . Junior's s into the Nving room, | In order to stress a point in tuning hooked it to his aerial and ground and | ! told Smith of the threecircult re- tried his luc | senerative receiver which has three To his gre: azement he seemed | knobs. One control selects the sta- unable to get Tesults from the | lions, the second tunes the tube cir- sel. Yet he had frequently heard the [Cuit, while the third handles the re- set in operation while his own was | Feneration feature of the set. In ing. It was a set Smith Jurior had | vrder to avoid disturbing the neigh- Duilt awith the aid of a nelghhor, and | bors with radiation it is necessary to Smith had not previously had an op. | know beforehand, either through ac- portunity to tune it. | tual testing or by following the man- According to his ufacturer's chart, where to set the tion, he had taken care to use dry |tube circuit control. When this is Ueries for the filament cirouit in.|known the regeneration knob is twinl- stead of the storage battery which ne [® until a hissing is Leard as the se- used with his regular set. And he |levtor knob is turned. bad applied the proper potentiul to Jur neutrodyne appears very sim- ihe detector. But beyond that he ap- | !4r to this.” T added, coming to the peared to have used very little judg- |eal point involved. “but the tuning ment. ix as different as the circuit. Inside “Wouldn't you have the same sort ' the lid of vour set there is a chart | neutrodyne, and Brown's super-het is | even simpler,” he argued. offered by way of explanation rccount of the sit- HINGTON, D DECEMBER 20, 1925—PAR 1 the transmitter until recently, as it was concealed. ‘WJJD Has New Studio. Moosecheart station WJJD the ideal radio studio in its new quarters in the new Palmer House in Chicago. In fact, it is called a “radio suite,” because it consists of cight rooms. 2 The new studio will be placed in operation tomorrow. It is on the twenty-fourth floor, and is the highest radio studio in Ch 3 Popular Radio The claims to e WBAL Plans Holiday Program. Many attractive musical features appropriate to the Christmas se will be broadeast this week by WB! Baltimore's new high powered station. he first attraction, 4 program of old glish carols by the choir of the Emmanuel Church, is seheduled for tonight, while on Christmas eve the boys’ choir of All-Angels’ Church | will put on the air some of the tradi- tional Christmas ca pecial Christmas u Tuesday Female also will be by the . Christmas present Hazel Knox, who the junior radio andience on “A Jour- ney to Christmas Land.” Suppressing Harmonics. In an effort to eliminate their har. monics, 47 broadcasting stations have THELMA SMITH, "« equipped their transmitters with ap- Contralto, who is heard often by ‘Washington radio fans. Her last re- cital was broadcast Thursday night from WRC. given the full penalty of $300 and had | his apparatus confiscated. | " | ence; the former opened up in October | *| " WAGM at Royal Oak, Mich., is op- ! paratus designed to eliminate this | form of station interference. Most of | the stations which have taken this step to improve broadcdst reception are old-timers or stations of natlonal interest. See if you notice any im- provement or if you still get har- monics fr The _list follows: KOB, KPRC, 't X, WAHG, ! WAPI, WRBR, WHAP, WJIR, WKAR, WLW, WLWL, PG, WRC, WR WHAR, X ), WOAT, W » WRR, . WSAI, WSB, WSM, WSMB, TAM and \WWJ. Now on the Air. Two broadcasters now on the air |which may have escaped the atten-| tion of some fans who keep their lists {up to date are WAGM. Royal Oak, Mich., and KGTT, at San Francisco. | Both these stations were authorized {to operate prior to the radio confer- | ind the latter has been reinstated | after being deleted a short time. v Robert L. Miller, with 50 | « ! . on the .4-meter wave ,330 kilocycle frequency. | KGTT, at San Francisco, owned by | lad Tidings Tabern: is also a watter, operating on 21 meters, or 1 kilocycles. trouble if You tried to shift gears on my car the way you do on your T asked when he told me of Lis prob tem the next . “You of course re alize that one radio set. like one tomobile, can be different from oiher in construction and i le. yet you think the : au an rinci of op- ple one liing vation will do for Loth which calibrates the setting for the sccond or middle dial. according to | the different wave lengths. The dial to the right is usually set at about ion, while best results v turning the left dial back a few degrees. It is quite sim- | ple even if the set is not well neutral- ized. and, what's more, you can't The worst thing about this case was the fact that Mr.. Daugherty wa warned several times and advised that he was breaking the radio laws. How- ever, he ignored the warnings and persisted in operating his station un- der the false call letters SCOL. 1 spections of his home falled to reveal thmugli’the ep and the tones- Here’s a new Audio Trans- former that “’lets through” the deey and the high tones. Its perfect amplification of the overtones makes for mellow- ness and reality, - Brandes Experts in radio acoustics since 1908 Distributor National Electric Supply Co. 1330 N. Y. Ave. Main 6800 Using the same basic circuit as the “Pup.” eider Crosley [-tube models have reported trans-Atlantic recep- tion. Built like a battleship but priced like a toy, this improved one tube Crosley givesyouradio’s best at radio’s lowest prices. Tune through local pro- grams—match any set station for station on headphones. Begin radio right with the big- gest radio value. At authorized Crosley Dealers | terfere with your neighbors. Adjustments Critical. , | “In most sets, other than the high- - | class circuits, it is necessary to sta- should have picked | bilize the receiver so as to prevent it from bursting out into howls. The adjustments are critical because the best performance is usually just be- fore the howling point is reached. In one set with two stages of radio fre- ncy amplification there is one dial First Tuning Step. “You mean 1 tuned wror 2" up something.” ““The first step in tuning is to know *hat clrcuit you've got.” 1 explained. “Otherwise you simply flounder q stand as much chance of the station you want as you would | have in opening a safe w { the tuning, according to wave <now the combination. lengths, and a smaller knob to con- “How could T tell what {trol a potlentiometer, whick. in this was There wasn't any li.be o7 | cuse, acts as a stabilizer. This tvpe “You could tell 1 et is most conveniently used with was all right before 1 1oop which should be pointed toward only taking a gue the station desired. Then the station should imagine th: selector dial is turned to the correct | vour difficulty in tuning ind the point. The rheostats for the fila- | that the set was made by Junior ents are. of course, turned up. Then were up against a single-cireuit the the set becomes unstable the generative recelver. Didnt i stabilizer dial is turned slightly until o dials veception is normal again.” Smith was sure this description That was only a tenth of the story {covered the set in question |of tuning, but Smith found that it “Well, then, your trousle was that | solved his particular problem. He re- vou did not operate both dials simu. 1 that he could not operate a | taneousiy. That is the iri - set effectively merely by twist- | |ing this particular type. O1 ing the dials any more than one could | eitenminatines, Knt other | rul an automobile by knowing merely operates the tickler ari inteasifies hOW to switch on the ignition. | the signals. I can just se 1 fussing | with one dial and then i1 other, and | | getting nothing bhut set “ | Noise Beg | = v at i | “I never have that tic sk With mY ' (Copyright by the Tiiman Feature Service.) RADIO GOSSIP AND NEWS vou Te- have Next week, 45—“Where the | A new field bore teners in now open in tengths, provided the able to build himself a wave receiver. Wl henectady is regular 389-meter ch. broadcasts also on meters for the entertainment o large number of fans equipped to re- ceive qn this channel. ven though th s#ctually operating within their should be pleased to know t partment of Commerce - radi s actually try to police the air and | e offenders who interfere with adeast reception punished. | The actual punishment,, however, | really lies with the courts of justice, | which prosecute cases properly pre- | sented by the radio supervisors. In | Fortj-one-meter reception was re-|a recent case an unlicensed amateur cently reported from Fort Leaven-| named Roger M. Daugherty of Day- worth, Kans., where an Army officer | ton, Ohio, who operated a set illegally {has perfected a wire-relay svstem|with als interfering with carrying the tones of his loud speak- | radlo service. and, of course, broadeast | er_to 162 homes | reception, by broadcasting phonograph | Distant reception of this set is also| records on wave lengths 340 and 400 | frequently acknowledged to the gen-|Ineters, was sent to court and fined | eral electrical engineers. An amy Judge Hough. Furthermore, teur named Warn in Auckland, N s sentenced to remain in jafl Zealand. reports that he held WGY he paid his fine, which he did broadcasts on this wave for half an | @uite promptly. hour in bright daylight. Another fan| his amateur might have secured a in Lincolnshire. England, says he gets | bropar license to operate on specified | WGY's short-wave on the loud speak- | Wave lengths below the broadcast band | er every time he t According to |and enjoved his radio experiments by | | Statements from WGY. these short communicating with other amateyr | waves seem to carry well to great|but he ignored -the Federal la ances and to all quarters of the |broadcasting when and as he pleased. | be: | The result was that he caused hun- Zxperimentally inclined fans who |dreds of complaints to be filed with are becoming bored with the present [the Government inspectors by indig- broadcast sets and programs should [nant broadcast listeners from miles bufld short-wave sets and seize this|around. ~His broadcasts even inter- | opportunity to explore the lower|fered with reception of stations out-| bands, or the higher channels, if they | Side Ohlo, thus becoming an interstate Choobe. ras W also transmits on | Offense. As far as can'be determined, 1,560 meters, far above the present|h® has been on the air about two | Hesancast benas | vears, during which time Supervisor | _WGY triled out its 41.88-meter wave | IZdwards of the elghth district and his | Tuesday, transmitting a special pro- | inspectors have been trying to locate ! gram to the British Isles, where it ::_“; ‘;“"gifi:;:“{;_fl ;:g:":rim(:xr&td- was picked up and relayed to 21 sta-| (% T4y, Gugh it was a nominal fine, 2 the supervisor believes that the lesson and the example will be as beneficial to the radio service as-if he had been on_its often 103 Policing the Ether. Broadcast listeners, prone to criticize 75 WITHOUT 'ACCESSORI Wholesale Distributor ES Doubleday-Hil! Electric Co. 715 12th St. NW. Main 4680 The $1.50 Ducon —and no antenna! Asmall Ducon plugged into any light socket—or a cumber- some, unsightly aerial? Surely a - Ducon! It’s so inexpensive—and so easy to use—so sure in its results. Take home a Ducon today — and hear tonight’s best programs! Sold by all reliable dealers on a 5-day money-back guarantee. Dubilier CONDENSER_AND RADIO CORFORA: SAESPEAKER volume with tonequality | E Saal maintains its tone with any volume. It has no wood, no tin, no com- Hear the Christmas Carols Listen-in as the old-time melodies wing their invisible way thru space and out from your radio set. ‘To receive them tone-perfect and with utmost clarity, every socket of your broadcast receiver should be equipped with RADIO /TUB A type for every vadio use Types C- & CX— In the Orange and Blue Carten NEW YORK ~ CHICAGO position — nothing to warp, crack or deteri- orate. The bell is of genuine Bakelite. $25 at your dealer’s. Vistributed by 1328 New York Ave. N.W Washington. D. C. | National Electrical Supply Co. H. G. SAAL COMPANY Chicago 1800 Montrose Avenus ~ BalkiteB435 operate the set. rate 2.5 amperes. e $1950 v. AY 37,1930 Supplies plate current ffrom the light socket Balkite “B” replaces“B” batteries entirely and supplies iform constant plate current from the light socket. With its use there are no “B” storage batteries or dry cells to recharge or replace, and your “B” current never varies, but is always exactly what is required. Once connected to your set and adjusted to its requirements, it needs no further adjusiment, and can be put in op- eration at any time by sim.ply turning on the current. It operates either storage hattery or dry cell tubes. This new model will fit any set requiring not more than 20 milliamperes at 90 volts-—practically all sets of 5 tubes or less, and most 6 tube-sets. In most cases it will fit in your present dry cell compartment, occupying about the same space as a large 45-volt“B” dry cell nt cost about 1/10¢ per hour. Operates from 110-120 AC 60 cycle current. Special model for 50 cycles. Noiseless— No bulbs— Permanent Like all other Balkite Radio Power Units Balkite “B” is en- tirely noiseless in operation, isa permanent piece of equipment with no bulbs or moving parts,nothing to break, replace or get out of order, and requires no attention except the infrequent addition of water. Balkite Radio Power Units provide uniform constant current to both“A”and “B” circuits. Whatever type of set you own, Balkite Radio Power Units will serve it. Sold by leading radio dealers everywhere Manufactured by FANSTEEL PRODUCTS COMPANY, Inc. FANSTEEL Balkite | dio PowerUnits BALKITE TRICKLE CHARGER ° BALKITE“R” * BALKITRS3°R svancaND By T Distributor DOUBLEDAY-HILL ELECTRIC CO. 315 12th 5. N.W.—Main 4680 L om L im iy e et D el S il Tt et S Sl i T R i i i ik i il L R g i R R e B iR R R R g 0 o B i R g Blewaro-UWawwmeo Matched~Unit Radio INSTRUMENT + TUBES ¢+ REPRODUCER ¢+ ACCESSORIES Jhe ldeal Gift- Stewart-Warmer Matched-Unit Radio brings years of Christmas joy to your entire family. What present could possibly ‘be more practical or more appreciated? Why not combine the “family pocket books” this year, if necessary, for this wonder radio that will bring lifetime sat- isfaction to all? MATCHING our Instrument plus Tubes plus Reproducer plus Accessories, all to function in perfect unison, is a Stewart- Warner triumph that guarantees complete radio satisfaction. If your friend has a radio, give him a Stewart-Warner Reproducer for Christ- mas. This important member of the Matched-Unit Family will greatly improve his or ANY set. His wife will particu- larly delight in its beautiful appearance. Our Blue Ribbon Representative in your locality will gladly demonstrate any of our Matched-Units to you. If his name is not listed below, write us at once and well send it. You will never know what com- plete radio satisfaction means until you own a Stewart-Warner. 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. Hav esnner‘s Sporting Goods Store, 1203' Good Hope Road 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. B. Thompson, 1436 Park Road N.V Woodridge Repair Shop, 2034 Rhode Island Avenue. Virginia Alexandria—H. B. Steiner. 405 King Strect Culpeper—Culpeper Motor Compan = East Falls Church—A. 31’ Heinbuch, 4th Street, Lewey ) Herndon—Herndon Garage, Eldon Street, Luray—]. T. Campbell Lynchburg—Williams-Thornton Main Street. Petersburg—Pcerless Battery & Tgni Main Street Richmond—A. R. Tiller, 1308 West Broad Strect. Front Royal—Jones Service Station. Marshall—-H. 1. Lee & Son. Electric Company, 607 ion Co., 108 North Maryland Baltimore—Arcade Electric & Radio Shop, Arcade Build- ing, Hamilton Street. J. F. Argabright & Bros., 106 + Road. Irving N. Foote, 5606 Pratt, Govans. Garrison Garage, 5153 Reisterstown Road. Goldsmith Bros.. Gilmore and Baltimore Streets. Isaac Benesch & Sons, 549 N. George H. Poehlman, jr., Avenue. Southern Hardware Company, 319 E. Fort Avenue. Trout’s Music Shop, 511 S. Third Street. Capitol Heights—Bover's Economy Auto Supply. Cumberland—Automobile Access. Co., Baltimore and Mechanic Streets. Mills—T. Jeonard Coombs. William L. Galloway. Leonardtown—The Leonardtown Tmplement Co. Laurel—H S. Green, 119-14 Washington Boulevard. La Plata—Central Garage. Meadows—Marlboro Auto Sales ans Chapel Gary Street. 3341 Frederick Great STEWART-WARNER PRODUCTS SERVICE STATION Wholesale Distributors, 1117 Fourteenth St., Washington, D.C. Model 300 {above] - - $65 Cabinet Models, - $65 to $95 Console Models, $175,to $450 STEWART-WARNER SPEEDOMETER COR'N 1826 Diversey Parkway, Chicago, U.S. A Stewart-Warner Reproducers $19.50 and $25 TWELVE MILLION PEOPLE ARE TODAY USING STEWART-WARNER PRODUC