Indianapolis Times, Volume 35, Number 291, Indianapolis, Marion County, 18 April 1924 — Page 10

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AMATEUR’S SIMPLE SET BRINGS SHARP SIGNALS Outfit Receives Stations Clearly, Yet Is of Comparatively Low Cost and Offers No Trouble, Bv ISRAEL KLEIN Times Radio Editor vjrJ HAT most of ns want is a simple, shaFplv tuned radio re- _ ceiver, that brings in stations clearly, yet is of comparatively low cost and offers no trouble. One of these is the simple, single control set pictured here. Perry O. Briggs; radio amateur, designed it.

Add two stages of amplification to it and you will have a highly efficient receiver that will bring in distant broadcast concerts with strength and clarity with practically no radiation. The set consists of the following material: LI and L 2, primary and secondary coils of antenna coupling; L3. tickler coil; Cl, variable condenser, .0005 mfd.; C 2, fixed mica condenser, .001 mfd.; C3, grid condenser, no leak; R, rheostat. 8 ohms; vacuum tube socket; two wood shafts, about 8 inches long. 1 Inch wide and H-inch thick: one large panel, 6 by 11 inches: two smaller panels one Hi by 4 inches, the other 3 by 4 inches; wood base. 8 by 11 inches: fifty-five feet No. 12 D. C. C. wire; eleven feet No. 18 bell wire: seven feet No. 12 D. C. C. wire for leads: seven binding posts. The banery binding posts are attached to the smaller of the small panels behind the set. Basket-Wound Coils The parts that make this set essentially different from the ordinary twocircuit tuner are the three coils. LI Is the primary of the antenna inductance and L 2 the secondary. The primary consists of six turns of No. 12 D. C. C. wire wound on a three-inch tube, then taken off and tied together by a thread to make it self-supporting. L 2, the secondary, is a basketwound coll consisting of forty turns of the same heavy wire. Fourteen steelwire pegs or nails are set equally on a board about the circumference of a 4 1-8-inch circle. The wire is passed outside one peg, then inside two. and so on for forty turns. Secure the turns with waxed thread and remove the windings from the pegs The tickle rcoil, LB. consist* of twelve turns of No. 18 bell wire wound like L3 on fourteen pegs in the circumference of a 2 7-8-inch circle. It U secured and removed like L 2. The secondary coil is placed on end between the two wooden rods, which

Radio Programs Saturday Pittsburgh. Pa.—KDKA (Eastern, 326) 1250 P. P. —Lenten service. 1:30 P. M.—Concert. 6:15 P. M. —Band. 7:46 P. M.—" Last Minute Helps to Teachers of Adult and Secondary Classes.” 8 P. M —Drama, "Mary's Lamb.” 8:30 P. M.—Band. Chicago, 111—KVW (Central, 638) 11:35 A. M.—Table talk. 6:45 P. M. —Children's bedtime story. 7 P. M. — Dinner concert. 8 P. M.—Musical program. 9:05 P. M.——" Under the Evening Lamp.” 10 P. M. to 2A. M.— Musical show. Springfield, Mass.—WßZ (Eastern, 337) 7 P M. —Dinner concert. 7:30 P. M. —Story for kiddies. 7:40 P. M. —Concert. 3:30 P. M.—Quartette. New York, N. Y.—WEAF (Eastern. 492) 1:45 P. M. —Speeches from Foreign Policy Association. 4 P. M.—Orchestra. 5 P .M. —Soprano. 7 P. M. — Saxophonist. 7:15 P. M.—Musical program. 10 P. M. —Musical program. 10:30 P. M. —Health speakers. 11 P. M. —Orchestra. Dallas, Texas—WFAA (Central, 476) 8:30 to 9:80 P. M. —Piano recital. 11 12 P. M.—Dance music. Schenectady, N. Y.—WGY (Eastern. 380) j 9:30 P. M.—Dance music. Louisville, Kv.—\VHAS (Central. 400) 4 to 5 P. M. —Orchestra. 7:30 to 9 P. M. —Concert. Kansas City. Mo.—WHB (Central. 411) 12:38 to t P. M. —Popular program. 2 to 3 P. M. —Ladies' hour program. New York. N. Y.—WJZ (Eastern. 455) 3 P. M—Popular songs. 3:15 P. M. —Musical p-ogram 4P. M.— Stringed ens-mble. 5 P. M.—Dance orchestra. 7 p. M.— Children's stories. 7:30 r. M.—Boya' band. 8:45 P. M.—Concert. 9:45 P. M. —Pianist 10:30 P M—"Ts Jazz tfc" Great American Art?” Davenport. lowa—W’OC (Central. 484) 12 M. —Chimes. 3:30 P. M.—“ Synthetic Perfumes and Flowers.” 5:45 j, —Chimes concert. 4:30 P. M.— Sandman's visit. 9 P. M. —Musical selections. Philadelphia. Pa—WOO (Eastern, 509) 11 P. M. —Organ recital. 12:02 P. M. —Orchestra 4:45 P. M —Organ recital. Jefferson City. Mo.—WOS (Central, 440.9) 11 r. M. —Special program. Cleveland, Ohio—WTAM (Eastern, 390) g p t jf.—Dance orchestra. Detroit, Mich.—WW’J (Eastern. 617) 8 A. M Setting-up exerdaes. 12 y Vocal program. 3P. M.—Orchestra. 1 P- M.—Orchestra

RADIO A SET FOR EVERY PURSE Capital Sales Cos. W. New York St *Clr. 3888.

act as shafts reaching from the large panel in front to the larger of the two sniaft panels in back of the set. LI is attached to the left shaft and L3 to the right.', LI at an angle of 45 degrees, and L3 at 60 degrees in relation to L 2. The whole group of three coils should be placed about two inches from the front and rear panels. These three coils are designed to offer little resistance, and therefore sharp tuning. The heaviness of the wire, the lack of any varnish, the absence of any tube, their freedom from other parts of the set —all these cooperate for low loss in tuning-in broadcast programs. S. Kruse, technical etLtor of QST, official publication for the American Radio Relay League, writes. “About the worst defect of most tuners lies in the high resistance of the coils used. The resistance is not generally in the wire, at least not in the cases where wire larger than No. 16 B i S is used. The resistance is in the tilings that are near the wire—the tube on which the wire is wound, the varnish with which the coil is painted, sometimes even the insulation of the wire itself.” For this reason the coils of this set are practically wound on air and kept apart from other materials. Only One Control The condenser, which is the only tuning control on this set, also must be clear of all possible resistance. “In general,” explains Kruse, “a good variable condenser is of the

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Radio Beacon Safer passage across San Francisco Bay in. foggy weather could be effected through use of the cross-coil radio beacon, developed at the Bureau of Standards in Washingtn, bureau engineers believe. This beacon marks out a line in,the ether and a boat equipped with an ordinary receiving set can be directed safely to its destination by keeping in touch with that “line.” The beacon consists of two coil antennae' crossing at 135 degrees. Its strongest signal is heard on a line bisecting this angle, so that a boat off this line would hear a signal from one coil stronger than that from the other, and would know it is off the directional line.

air type and is built so that leakage must go through long paths in material that, is not too thick or wide.” The insulating material must be good—hard rubber or molded bakelite, for instance. Trouble from hand capacity would be practically eliminated if the wire to the grid leak and condenser comes from the stationary plates, and the wire to the filaments comes from the rotary plates. Even the tube socket must be of porcelain, hard rubber or molded bakelite to reduce resistance as much as possible. Any other kind of socket, like fiber or “molded mud,” spoils the tuning. It will be found that careful attention to detail in construction of this set will result in exact and sharp tuning, with little or no troublesome radiation, and with the simplest, cheapest arrangement to be obtained in many a moon. Legion Station Charles E. Erbstein, famous Chicago attorney, has offered his broadcasting station, WTAS, about four miles east of Elgin, 111., as official station of the American Legion. Formal announcements will be broadcast twice a week, and the rest of the week will be given over to musical entertainment.

THE INDIANAPOLIS TIMES

Clip and Raw. AN EVENING AT HOME WITH THE LISTENER IN (By Courtesy of and Copyright 1924 By Radio Digest Publishing Cos.) (SEE INSTRUCTIONS FOR USE BELOW) Static ud City M.L Monday Taiwiay Wlne*tajr fnir SotunUy S-lMisj CTCH.Ctiftn.Mu 440 72:00- 1:00 Silent U:00- 2* Silent Silent 11:00- 1:00 Montreal, Quo 424 Silent 6:00-10:80 Silent 0:00-10:30 Bjta* :00-10.30 5.30-4 JO CKCD, Veneouver. B. 0... 410 10:30-11*1 10:30-11* 10:30-11:30 10:30-11:30 I0:J(M1:30 Silent CKT, Wlnnipei. Men. 450 Silent 0:15-10* 6ileat 8:15-10.00 8:ljM0* Silent ..00-10:00 CYB.MexicoCity.Me*.... 415 Bilent 7:00- 8:30 Silent 7:30-8:30 .Bileat„ 7:00- 8.30 Sent CYL Mexico City,Me* ... 510 Silent 8:30-10:00 Silent Silent 8:30-10:00 Client Silent KDKA, E. PiUeburgb, Pa.. 070 5:00-0:00 5:00-11* 5:00- 0:00 s*-11* 5:00- 0:00 5:00-0* 3-7* KFAE, Pullman. Wash 330 9:30-10:30 Silent 9:30-10:30 Silent 9:30-10* KFAF. Denver. Colo. ... 380 9:00-10:00 9:00-10* Silent 8:30-9:00 9:00- 0:00 9:00-10.00 Srtoot KFOA,Seattle. Wash. ... 455 10:30-11:30 Silent 10:30-11:30 Silent 10:30-11:30 SUent Suent KFI, Loe Vneeiee, Calif .. 489 129)0-1* 8:45-1* 5:45- 1* 8:45- 1* 8:45- 1:00 8:45- J* 8.45-1* ICFNF, Shenandoah, la.. 285 Silent Silent 7 70- 9:00 7:30- 8:30 7 JO- 8* Y-Wt-O* 8.30-7.30 KCO. Oakland. Calif. .. .. 312 Siler.t 10:00-11:00 Silent 10:00-11:00 ~Sjkot JOAII-J0 Want KCll,Honolulu. Hawaii!. . 380 12:00- 1:30 12*- 1:30 12*. 1:30 12:00- :30 2:00- 1:30 12:00- I* 12.00-1.30 KGW. Portland, Ora. .. 492 10*-11:30 9:45-10:30 10:00- 1* !0:00- 1:00 10:00- !:30 12 00- 2* 9. 0.00 KHJ, Loa Aogelea,Calif. 395 8:46- 2* 8:45- 2:00 8:45- 2:00 8:45- 2:00 8:45- 2* 8:45- 2.00 10*-12.(10 KLX. Oakland! Calif 5* 10:00-12* 9:00- 9:30 10:00-12* :00- 9:30 10:00-13:00 B*-* *!* ZPO.San Franciaro.CaTif.. 423 10:00- 1* 10:00- 1:00 10.00- 1:00 10:00- 1:00 Siiert 10*- 2* 1° : 30-12* KOV Pitub-jrah Pt. . 360 9:00*10 00 Btltnt Silent 9:00-10:00 oilenl KSD.'st Lon? Mo 848 8:30- 9 * 8:00- 0:00 7:00-10:00 8*- 9* Silent 9:00-10:00 (Man* KYW tThicaao 10 ° /. 836 Silent 7:00- 8:30 7:00- 2* 7:00- 9* 7*- 2* 7:O<V 9* 7*- 8* NAA, .. 435 5:45- 7:20 0:05- 7:20 8:25- 7:40 5:45- 7:40 7:05- 7:40 Silent Sl ant pvt X. Havana, Cuba . 400 Silent Silent 7:30-10:00 Silent Silent 7:30-10* SUent WBAP Fort Worth Trial. 478 7:30-10:48 7:30-10:48 7:30-10:45 7:30-10:45 7:30-10 45 7*- i :30 11:00.12* WBAV* Colntnbue 6 190 6:00- 8:00 Silent Silent Silent 6:00- 8:00 Silent Silent 3VBZ Maee 387 5:00- 8:00 8:30- 8 * 5.00- 8:00 6 00- 8 * 5:00-11:00 6:00- 8 * 5:40-8* HCAt piltaburgb “ 483 5 30- 9:00 5:30- 9:00 5:80- 9 * 5:30- 9 * 5:30- 9:00 5:30- 9:00 2:00- 5* WCAL.Northf.cfi! Mina.. 360 Silent Silent Silent 900-10:00 8:30- 9* 12:00- 1* 8:30- 9:30 W'CAP, tVaeJnniton. D. C. 469 Silent 6:30- 9:00 Silent 8:15-11* Slant 6.15-11* 6:20-9:00 WCBD, Zion 111 845 3:00-10:00 Bilent Silent 800-10:00 Silent Sl ant 2:30-5:30 WCX. tlelroH Mieb 517 7:30- 9:00 7:30-11* 7i30- 9* 7x30- MOO 7 30-9* Silent WDAF Kansas City Mo. 411 8:00- 1:00 11:45- 1:00 8:00- 1:00 11:45- 1* 8 00- 1* 11:45- 1* 4:00- 5* WDAP Cbicano 111 380 Silent 7:00- 1* 7:00- 1:00 7:00- 1* 7:00-1* 7:00- 1:00 8:15-11:1* WDAR PhiMelphis Pa .. 385 8:30-10* 8:30- 7 * 6:30-10:00 &30- 7:00 6:30-12:00 6:30- 7* Silent WEAF New York NY.. 493 8 31- 9.00 6:30- 9:00 0:30- 9:00 6*Mi* 6:30- 9:00 6:30-11:00 6:30- 9* WEAY Honaton Texas .. 360 6:00- 7 * 6:00- 7* 8:00- 7 * 6:00- 7:00 8:00-10* B*-10:OC 8.-00-10* WFAA. Dallas T. .. 478 8:80- 9:30 8:30-12* Silent 8:30- 9* 9:30- 9:30 9:30-12 * 6:00-11* WFLPlida.leinhia.Pa ... 398 8:30- 6:00 5:30-10:10 5:30- 6.30 5:30- 8 * 5:30- 8:80 8:30-10:10 6:30- 7* WGAZ, South Bead lod. . 3* 7*-8:30 Silent 7*-8:30 Silent 700- 8* Silent Silent WGI. Medford. Macs. .. 360 Silent 800- 7:30 6:80- 8* 0:00- 7:80 6:30- 5 * 8:30- 8* 7:30- 9* WGN.Cbleawo.lU 370 Silent 600-12:00 6:00-12 * 600-12 * 6:00-12 * 6.00-12:00 8 00- 9* WCR. Buffalo, N. Y 319 5:30-12:00 5:80- 7:45 ‘ 4:30-12* s*. 7:45 5:30-12:00 6:30- 7:45 2:00- 4* WGY, Seheneetady, N. Y.. 380- 6:45- 9:00 h:45-9* Silent 6:44- 9:OC 6:45-10:80 8:30- 8* 6 30- 7:30 WHA, Madison, VVis 380 7:30- 8.30 Silen* 7:10-8:30 Silent 7*-8:30 Silent Silent WHAS. Louisville, Ky 4* Silent 7:80- 9 * 7:30- 9:00 7:30- e* 7:30- 9 * 7:30- 9:00 4:00- 5* WHAZ, Troy. N. Y 380 8:00-10* Slier. SUent Silent Slleiit Silent Silent WHB, KaneaeCity.Mo ... 411 7:00- 7:45 7:00-10:00 7:00- 7:45 7:00-10* 7:00- 7i45 SUent B*. 1* WHK, Cleveland, 0 283 5:00- 5:30 5.*- 6:30 5:00- 5* 5*- 5:30 5:00-10:00 5100- 5:30 7:00- 9:80 WHN, New York, N. Y . 360 8:30-11* 8 JO-11* 8:30-11:00 Bx3o-11:00 8:30-11* 6:30-11* 8:30-11:00 WIP. Philedelpfcia. Pa .... 809 6:00- 6:80 s*-ll* 5:00- 6:30 6*-io* 8:00- 6:30 5:00-11:00 8:30-11* WJAR. PruviJanee, R. L... 380 Silent 6*- 7:00 6:00-11:00 SUent 6:00- 9:00 Silent Bilent WJAX, Cleveland, O 890 Silent 6:80- BJO Silent 7*-9:30 Silent Silent Silent WJY, New York, N. Y 405 Silent 0:30- 9:30 Silent 6:3#- 9:15 6:80-11* Silent 7:15-10:00 WJZ, New York. N Y 458 6:00-10:80 6:00-10* 6:00-10* 6:00-10* 6:00-10:30 6:00-10:30 8.00- 8:30 WKAQ. 8a Juan. P. R.... 360 Silant 7*- B:3<> Silent Silent 7:00- 8:30 Silent Silent WLAG. Minn.-St Paul... 417 6:15-7* 6:15- 7 * 9:30-10:45 6 15- 7 * 9:30-10:45 9:30-12:30 7:45- 9:l* WLW. Cincinnati. 0 309 8:00-10:00 10:00-12* 8:00-10:00 lo*-12 00 Silent Silent 7:45-B:4* WMAQ, iTdcugo. 11l 448 Silent 7:00-10:00 7:00-10* 7:00-10:00 7:00-10* 7:00-10:00 Silent WMC, Memphis Teas..... 500 1:30- 9* 8:30-12* Siiert 8:30- 9:30 8:30-12:00 8:30- 9:30 Silent WNAC.Baaton.Maa 278 5:00-9* 7*- 9 * 5:00- 9* 7*- 9:00 4.00- 9:00 8:00- 9:00 6:30- 8:30 WOAl.Saa Antonio.Taaa* 385 9 30-10:30 9:30-10* SUent 7:30- 8:30 Silent Silent 9:30-10* WOAW. Omaha. Neb 526 6 00-11:00 6*-U* Silent 6:00-11* 6:30-11* 6:00-11* 9:00-11:00 S2£rKK*i p f?t u i:—• ffi E tf m ' **■ * 9:00.10* s 00-* 9 00-10* 7*-n* WOO,tffilledeiph>a.Py.-. 809 6:30-10:00 Silent 6:20-10* Silant 6:30-10:00 Silent Silent ESS'S**’" C l tJ ’v Ma ’ s *- 6:30 Silent 8*- 9:30 Silent 8:00- 9:30 7:00- 7:4* WOR. Newark.N. 3.. .... 406 5:15-10* 5:15- 6:30 4:15-10* 5 15- 6:30 6:15- 6* 5:15-10:00 Bllnt WOS, Maraen City. Met . 441 8:00- 9* Silent 8:00- 9.30 Silent 8 00- 930 Silent 7-30.8-80 SMMi' 6 ' 0 $ in"! S“" n ' ?***! SUent" wKmo Malt wiiSSt 6 ”-- J3 SBS !*:o*l toSi?}.u WTAM, Clave land. 0 290 Silent BilanV 7:00-0* su"| S"! LiML. ® :o ° WTAY'§S"fk ij 883 A It'!’?! fIVU* J:14.|2. 8:14-12:00 8 15-1200 iiif kici toVask'oJ ti T } m *’ I! .. vour tain Timr, ntblract one hour; 4/ u o*r oitu ulet V t v °. ur 0,1 V “*** [.aide fiefwdea Z ncn,n 0 b *eos e „,' ttS.

Intercollegiate Club An interctilieginte radio club is being formed by which colleges having radio calls will be represented. College games away from home will be

reported through it, various matches held, interesting collegiate news exchanged and college interests represented at important legislative hearings in Washington.

Today’s Best Radio Features

(Copyright, 1924. by United Press) KBD, St. Louis (546 M) 8 p. m. CST —Mercedente’s sacred cantata, “The Seven Last Words of Christ." W.JZ, New York (455 M) 8 p. m. EST —Good Friday services from West End Presbyterian Church. WMC, -Memphis (500 M) 8:30 p. m. CST —Lecture by Lion. Josephus Daniels. CFCA, Toronto (400 M) 3 p. m. EST —Stainer’s “The Crucifixion," from St. James Cathedral. WOS, Jefferson City, Mo. (440.9 AD 8 p. in. CST- —Program by the Jefferson City Rotary Club. Amateurs Find Trains Trains snow-bound on the Boston 4 Maine Railtoad in New England during the recent storm, were located through the aid of radio while the telegraph wires were down. Waldo J. Kelley, 1 CPI of Watertown, Mass., communicated xvith other amateurs along the line and AVas a great heip in clearing the tracks and in bringing aid to stalled trains. 'Broad-Catchers’ “Broad-catchers” is the name a radio advertiser in England giA'es radio listeners. It might well be adopted for this class, as contrasted to broadcasters.

Sale Ends Tomorrow Your Last Chance to Get for Your Old Refrigerator! No Age Limit! The beautiful Alaska keeps food perfectly, Saves Ice, Has Many desirable features run qa lask aq REFRIGERATORS See the j Arc von going to keep that old refrigLork * hat !|j i jrHY y erator? Are you going to risk your Saves the >te family’s food —pay a heavy premium for anew and revoiu- m I melted ice—lose the $5 bill we offer for it ? tionary feature ere- Jj jl] f| J _ | ated by Alaska. Acts like a nttie “X-Ray. - Tomorrow is the last day of the two ymm own eyes "the weeks’ sale. Tomorrow the special actual Pebbled Cork. prices and $5 offer END. Only a few s* ring C toner 6 W au° s hours more and you ’ll have to act promptare made, it’s the ly to get in under the wire. Cork-Wall Window. Come and look into 1 Sale Ends Tomorrow Sale of Fibre and Reed Furniture Reed Plant Stand, $4.75 3 Pieces Fibre Reed Comfortable Furniture, $37.85 Here Is an artistic piece wt\ich Tt’s seldom indeed that you are able to secure a complete will add beauty to auy room in three-piece fibre suite of this design at a price anywhere Avhich tt IB jDlng'ed. Handsome* j f}r, ure i Included is a well designed settee, reed larninleres. to a very ° . .. , . charming finish, at this amazing- chair and rocker in haromal broAvn hmsli, at a price ly low figure. that makes it a most unusual value. 1 ... Stroller. Reed Fer nery $15 . 95 Enhaace ta. A W Purch... tata. *\™. home bv the addition of this strollers makes it possible for fort bv buying the products of mak- / , . „ , era who put baby's welfare first, attractive reed fernery, at a us to offer them at a price Thick rubber (ires and resilient price that makes it an excep- that - B amazingly low! Re- X'Tatures a 0 s f 8u t r £ is Serfage owe>e 0 we>e (ional value. Close y woven gHlent’ springs. Choice of offering at tomorrow's low price, reed in a variety of charming Your choice of dark blue, caramel finishes. several finishes. and ivory. ~ttvfpv PURCHASE GUARANTEED aaaßHaH QgHHHßßiiiii

Radio Superstition Anew superstitulion is going the icunds especially through the farming population of Europe. It is the belief that radio is responsible for thunder and lightning. The result is an opposition to the growth of radio in Europe.

RADIO “SUPER-HETERODYNE” Only a Few Sets of Super-Parts Left Price, $36.50 The Early Birds Will Get ’Em Our Doors Will Be Open Saturday Morning at 8 o’Clock—No Phone Orders The Alamo Sales Corp. 131 E. Ohio St.— l/2 Block East of Denison Hotel THE ALAMO ” \

“THE STORE THAT SATISFIES” 1

FRIDAY, APRIL 18, 1924

First World Show The first annual international radio show is to be opened at Madison Square Garden, New York, on Sept. 22. It is expected to be the most complete exhibition of radio, as known throughout the world, that has ever been presented.