Evening Star Newspaper, May 29, 1922, Page 9

Expert Advice on Radio NQISPToMthimkaryflRmivthat. BY A. HYATT VERRILL, Bxpert on Radie The very first thing that every one ‘Wwho has' been Dditten by the radio “bug” will wish to do is to own & receiving set and listen to the music, songs, stories, speeches, news and aimilar entertainment from the big ‘broadcasting tions. All this may be done with e very simplest of afmple arystal sets, containing but three instruments. You yourself can make a simple set in a few hours and it should not cost over $5." However, you must not expect as good results with such a set as with a more complete and efficient ome. You will have some trouble with in- you live in a large city you must not expect to hear as far from the sta- tion as this, and, while no one can .* possibly say beforehand just how far such a set will bring in the music, it is safe to state that these sets are never effective more than twenty-five miles from a sending station except by some freak or unusual condition of the atmosphere. This is so even in the country. But fer the first set and your first tempts at making homemade 1 When You T hmk —of Painting, Paperhang- ing and Decorating think of Taylor. S Estimates made on Pequest. HARRY W. TAYLOR CO. B 2333 18th St. N.W. Tel Col. 1077 ) SEA VOYAGE fox your summer wvacation! The most fascinating pare of the ‘Western Hemisphere— Cube, Jamaica, Pana~ ma, Costa Rica, Colom« bia, Guatemala. Quaint, old world struments there is nothing more suit- able. Even with so simple a s one can obtain a great deal of and ‘whik -eu. wfll i:“ ‘besgin vl'.h Uu -!mpl-t you make mon ca paratus and more mfi% 3:.:&‘"’; 7~ @ -0 Crpseal Wolder (b-’ nyrted sets. Step by step, you will reach the climax and turn out a highly eficlent regenerative tube set with amplifiers nd loud speaker, which can be hard all aver a large room. Therefore, let us first take up the simplest receiving set % to devisé or construct.- Such get, as Shown in the accompanying cut, contains but three units or instruments, asid (rvm the phones, and Is known as M'Enlry circuit set owing to the fltt that the tuning coil is a simple helix or coil consisting of a prlmlry ‘winding only. The three instruments used In th set are all extremely simple and m: B constructed by any cne without the |as a use of epecial tools or devices and with a few cents’ worth of materials. But, of course, if you prefér, you may pur- chase the instruments ready-made and merely hook up or install the set your- self, However, if you do this the set will cost several times as much as if the parts are homemade and will give Do better results. Then, too, there Is the pleasure and satisfaction derived from having made everything about the set. The” fixed condenser is perh&ps the simplest thing to> make, and this has already been described in a previous . The next thing to make is For you réequire wmo double-covaed, cotton-insula.ed per_wire, or enameled cepper wh-a. lhou: No. 18 in sige; a pasteboard, or “Formica” tube nbmn three to lhrea and one-half . inches -in diameter and six inches lol’? some binding ts— those from old dry batteries will do— and a multiple-point switch, which also can be homemade If desired. If a-pasteboard tube is to be used for the coil it should first be soaked in melted paraffin and then dried In order to render it moisture proof. Then make & small hole at each end about one-half inch from the edge of the tube. Thread one end of the wire through one of these holes with about six inches projecting on_the inside and fasten it in position by a drop of glue or sealing wax on the inside of the tu ‘Then wind on the wire, leaving about one-eighteenth to one-eighth of an inch between the turns, until you come to the tenth turn. Take a twist in the wire at this point, so as to leave a small loop about six inches long, as shown in the cut. Continue winding for ten turns more, ‘when another loop or “tap” should be made. Continue winding and taking taps in this way until about fifty turns and four taps have been made, and then pass the end of the wire through the hole in the tube; fasten as you did at start- ing and leave at least six inches of free wire. With a knife, carefully scrape the Insulation from about half an .nch of the end of each tap loop and then twist the two sides of each loop tightly together. If the turns of wire on the tube are loose or have @ tendency to slip back and for give the whole a coating of melted parafiin or wrap with adhesive tape. To mount the coll, fasten it to a wooden or fiber panel by means of tacks or screws through the bare ends of the tube and run the ta wires through holes In the Dlnt; leading them to the contact point! of a_multiple-point switch. Run one of the end wires of the coll to an- ather contact ,point, and place two binding posts at some convenient spot on the panel. From one of these run ‘wire to the post of the switch arm and carry the remaining end wire of the coil to the other binding post. The coil is now._complete and ready’ o connect with the set. And now for the detector. For a first attempt this may be a most simple affair, con- sisting of a plecé of sheet brass or copper one-sixteenth of an inch thick and one inch wide cut and bent as shown. a m-n'_glm of sheet brass or copper cut to the form {illustrated and with corners bent up; a plece of fine hor bronze or brass wire, known Gain 6); inches of space per 1000 L. B. Reinforced folders ¥ [This is Hows Amml of filin ce requi by 1000 ordlnn; ;‘::vy wdm folders ....Jo% inches Amount of mnd:}uu required 01 by 1000 L. B. R rced f01ders vuemeves Tiling space gained, t whisker,” im which a few llrns like & coll are made, and of binding posts. The c 'hl-khr 1» attached to the brass up- right, which is screwed to a base, and the crystal holdee is placed directly beneath it. The orystal !s held in place by the corners of the holder be'ng bent over it, and with bits of tinfoil stuffed in between the holder ana crystal. In using the detector, the cat whisker must be moved here and there upon the crystal until a sensi- tive spet is found; as crpstals vary greatly, several should be tried yntil the best and most sensitive is found. Everything is now ready to connect. The lead-in from the ground is con- nected with the post which leads to the switch arm, the serial is con- nected with the other post and the wire from the detector is clamped in the same post which connects with itch arm. From the other post detector (the crystal holder post) a wire is led to the phones and hence to the ground post of the coil with a fixed condenser shunted across the phones as lllustrated. If you wish to make your own switch you will need a strip of brass cut to the form fllustrated, & brass screw, some brass-headed upholster- ers’ tacks and a few brass washers to fit the screw. By driving the tacks through the loops in the wires, with washers beneath the wire, very good contacts may be made. The strip of brass, at ed to the panel by the brass screw as shown, will make switch arm. By the time you have this set rigged up and working you will be anxious to have something better. Tomorrow L will describe how this set may be improved by adding better instruments. {(Copyright, 1832.) Tomorrow—~*"Improviag the Orystal Set." BANDITS LASSO VICTIM. Two Boys Stage Unusual Hold-Up From Brooklyn Bridge. NEW YORK, May ‘29.—Two bays, . | standing op the east approach to the Brooklyn bridge, last night dropped a lasso over the shoulders of Samuel Denton and jerked him off his feet. While one of the boys held fast to the rope, pinioning Denton's arms. the other went through his pockets, taking $3 and a gold watch. Later Ernest Foeri, thirteen, a schoolboy, was arrested and identi- fied, police said, as the youth who had searched Denton's pockets, He was held on a robbery charge. —_— TWO0 MOONSHINERS KILLED. ‘WOMBLE, Ark., May 29.—The kill- ing of two alleged moonshiners and the wounding of a third in a rald made by deputy sheriffs of Pike and Montgomery counties, at Fancy Hul, !several miles southwest of here, be- came known here yesterday. None of the raiding officers was Injured. A jury found thn the officers were jus- tified in the 14 !nelu 6} ‘What makes this gain? The space saved by the body of . the L. B. Reinforced folder. The body of this folder is merely medium weight; not heavy weight. But the handling edge is reinforced with a double-thickness strip. - ~ For the handling edge is the business edge of any folder. Day after day the file clerk fingers and handles tha The usual medium-weight folder, with its medmm-weag t edge, cannot long resist this gripping and bending. And the otdmry heavy folder takes up one-third; more room in the .wmmmuutfi. % in addition, L. B. Reinforced Folders cost less than heavy weight folders of equal strength, NAA-=Naval Radio Statien, Radle, Va. 10:30 a.m.—Meteorological report on 5,950 meters of arc transmitter. Noon and 10 p.m.~—Time signal, fol- lowed by weather report and ship or- ders. 10:30 p.m.~—Naval Press news, wave length, 2,660 meters. WWX—-P.I( Office Department. —Weather report Dl!trlct of Columbli; Pennlylunll. Ohio, Maryland, Virginia and West Vlrglnll. 10:30 a.m.—Marketgram (frutt and Ve, e'lbl?) on Lloo"r’nl:u Marietgram’ telegrasas > p.m.—Whblesale ‘WMU—Doubleday & Hill Electric Cu-lll' (360 Mcters). 4:30 to —Blu ball scores for the Marlows, bari nmn- ) Cl'll- len, plnnlll H viol olon itni Dialect monol Wlllh J. Slay- Disiestmpsolonas Wiliins i Riaa " Extije. N, White; sccom- B’r‘l‘nln. Quin- uu-u— Kane, Duo Art 6:30 to 7 Mm——RMIo lpnrk code. "B—Vllfl llll!l Sigual Oorps (309 Meters). 8:50 p.m—Instruction in radio. 9 p.m.—Concert. J—M‘fllm(mm 9.30 um—'l' f dinner and household hints (360 meters). a.m.—Music (360 meters). l. 5 a.m.~—Weather report (485 me- TS). u~ls am.—United States Naval Oh- time nals relayed ters). lo p.m.,—ahrkfl. quotations (360 plete sport results; 'orld n.'l 8‘0 meters). 'oast to coast dance mu- lle by Orlola Terrace Orchestra. The G; | Town Crer (360 meters). Couperikin trot (Wood-Romberg); gue to King Lear,” piano ' (Sonna- kolb; erdi) P Sovory. Nor Weslan: Echo Hong soprans (Bjer- pied” pian C Wood-RomM piano (Gollnod announced. mFHb?l‘“ items; reports on 12:30 p. nolan lnnuno ea. 8 Duo Art xlr:no selection, Iwod by the Duo mduulnt an brief talk, Anna -l on “The Science of Heal George Finckel, 'eeluu: Bnrrr n D base ball games by innings. KDEA — Westinghouse, Pittsburgh (360 Meters—Eastern Standard Time). $ to 9:156 a.m.—Music. 11:30 a.m. to noon—Music. 2:30 p.m.—Results of all league .m.—Popular concert by the Bud- ub Orchestra of Pittsburgh. p.m.—‘rhutrlu.l features; base ball scores survey of busi- ness cond(uonl by National Indus- trial_Conference Board. 6:45 p.m.—Special ne govern- ment market reports; summary of New York Stock Exchange; weather foreocast. 1 &w—"l‘l- Future of Pittsburgh Aerial Astivities,” by A. Krig- tary of the Pittsburgh Aero p-m.—~Bedtime lnd Uncle wmfly !mle- for Children. Great to have onice 8 p.m.—Versatile entertainment by the Southern Ladies’ Club of Pitts- burgh, arranged by Mrs. C. Perry Kiefer. 9:56 to 10 p.m~—Arlington time sig- nals. KYW — Westinghouse, Chicago (360 Meters — Central n-yll;ht-nvl-‘ Time—Same as Eastern Time). 9:25 a.m.—Opening market quota- tions, Chicago Board of Trade. 0 a.m.—Market quotations at one- half-hour intervals until 1 p.m. 1:20 p.m.~—Closing market quota- tions. 2:156 pm~—~News and market re- ports. 3 pm.—American and National league base ball team line-ups; prog. ress of games every half hour there- after untll their close. 4:15 p.m—News, final market and financial returns. 6:30 p.m.—News; fina] market and fln-ncm returns. 5 ‘p.m. — Children's bedtime llo ; base ball report. 8 to 9 p.m.—Program of music, by Dorothy Bowen, soprano; _Elsie panist; erlon Laffey, violin obligat Vesta Murray Watking, reader; C. Gordon Seder, musical director of the First Congregational Church of Chi- one0, 9 p. ews and sports. 9:1 BS p.m.—Special features, es an- nounced by radiophon WJIZ—Westinghouse, Newark, N. (360 Meters—Eastern Dayligh Saving Time, Deduct One Hour.) 9 a.m.—Agricultural reports and rices as released by New York, ol ersey and federal bureaus; program of music. 10 am—_Program of music: Art recital. Noon—Agricultural reports; weather forecast; program of music; Duo Art recital, 12:15 to 1 p.m.—Standard time sig- nals from Arlington. 1 p.m—Program of music. 2 p.m—Shipping news by Marine anxnur!n: and Ehlppinx program of music. l p.m.—Program -of musi Pmr—Bm ball scores; women's hion news by the Women's Wear }D.uy fashion newspaper; ~us'e Duo program 5 p.m—Base ball scores; program of mullc .m.—weather forecast; reports and prices; 2 agricul- e shipping news. 7 p.m.—Final base ball scores; chil- dren’s bedtime stories and music. / p.m—Final base ball scores: marine news by Radio Corporation of America; “Business and Industrial tandard | Conditions In the United States” as observed by the national industrial conference board: Insurance,” by David Marica: “Child Welfare,” by Dr. Frank Richardson of the *pea "vs bue u of ¢ fcan Red Croms; concert under the direction of Charles D. Isaacson of the New York Evening Mail 9:30 to 10:15 p.m.—Concert by the Meirose Quintet (colored). 10:52 to 11 p.m.—Arlington time signals. 11:01 p.m—Weather forecast WGY—General _Electrie Company. Schemectady. N. ¥ (300 Meters— Eastera Standard Time). u 30 p.m—Stock quotations, m.—Base ball scores; stock quo- tations; 1ate news bulletins. WWEZ—Wanamaker's, New York (360 Meters — Daylight - Saving Time. Ded-n Ome Hour). 40, 5:40 and 10:30 p.m —Mausic and ehlldrenl .torlh& ".;-:,.i o Ruki S DUNN-PEN Tha Pountaia Pon with the Titde Rod Pump-Hendle (TRADE mg l‘; fsorTLe pzycb “sc,s ; it it is plain why L. B, Reinfo: folders are favorites on the moul plynheduhofthgeovammt—mmm. 1470 The Coca-Cola Company " Atlanta. Ga.