Evening Star Newspaper, July 23, 1926, Page 14

$3.50 Philadelphia $3.25 Chester $3.00 Wilmington AND RETURN SUNDAYS August 1, 15, 29 Special Train ‘Eastern Standard Time Leaves Wuthmn (goion Station) Ar. Wilmin to AM.. Chester 'm Ph{‘llndelnhu Broad Siree IR Broad Srest Station Bekunn:r)w pxu oas fin?xm: Iphia (‘hrs(er 7:50 P.M.. Wimingion 818 Tickets on sale two d-y- preceding Excursion oSimiler, Excursion Pennsylvamn lerond The Standard Rallroad of the World The Family Friend Nothing purer, sweeter or more effective for eczemas, rashes, itch- ings and irritation Cuticura Soap and hot water to free the pores of impurities and follow with a gentle application of Cuti- cura Ointment to soothe and heal. Soape Ointrment 2 nd . Taleum e, Scid i e b W SP™ Cuticura !Bwh. Sflcl 28e. aaaaaaaas % Thirty cents a mile in a taxi—but only 3¢ a mile to Europe with excellent menus, com- fortable living accom- modations, broad decks for recreation and interesting, cul- tured companionship on the voyage in Tourist Third Cabin QB wr '; Rouna Trip $170 (up) Reserved for students, teachers, professional and business people and other congenial American vaca- First Announcement “FILENE PLAN” ECONOMY TOURS 18t0 29 Days $222 to $258 all expenses included Here are some summer sailings from New York, Boston and Montreal convenient for vaca- tionists. Round trip, if desired, less than 3 weeks, mcludlng 4 or 5 days in Paris and London. Majestic - - August ¥ (World's Largest Ship) ® New York—Chérbourg | —Southampton « « August 7 Montreal —Quebec~Liverpool Homeric + August 14 New York—Cherbourg —Southampton Devonian + August (TOURIST only) e Boston—Liverpool Minne! (TOURIST only) Aug. 21 Sept. 18 Oet. 16 New York—Plymouth ~—Boulogne — don Doric + + August 21 Montreal—Quebec—Liverpool TOURIST SAILINGS IAII‘I‘AINIII THROUGHOUT mn ® Wmn STAR LINE RED STAR LINE LEYLAND LINE ATLANTIC TRANSPORT LINE INTERNATIONAL MERCANTILE MARINE CONRANY R. M. Hicks, 1208 ¥ Street N.W,, ‘Washington, D. C., or any steamship agent. I Our Trlvelen hecks are cashable everywhere. QUARTET INDEBUT ON WCAP TONIGHT Colored Church Choir Sings From 9:30 to 10—String Music Also Listed. + The newly organized :Insurance Quartet will make its radio debut to- night through station AP. Com- posed of Winfree John: first tenor; M. Le Roy Goff, second tenor; Harry Middleton, first bass, and Edwin Callow, second bass; the quartet is scheduled to present its program from 8:45 to 9 o'clock. Six other musical attractions are on WCAP's program. The Nordica Mandolin and Guitar Orchestra is the opening feature. Interspersing its program will be a recital by Dorothy Neff Tyler, soprano. Another recital will be given later by Fannie Shreve Heartsill, soprano. The choir of the Mount Zion M. E. Church (colored), under the direction of James T. Beason, will sing from 9:30 to 10 o'clock, and the Hawalian Melody Boys—Clinton M. Rollins, Melvin Henderson, Charles Baum and Edward Pringle—will close the pro- gram with an hour’s concert from 10 to 11 o'clock. The only feature that WCAP will draw from WEAF tonight is the weekly concert of Whittall'’s Anglo | Persians. Sandwiched between the musical features will be an announce- ment of the major league base ball results, market summaries and a scientific talk prepared by Science Service. WRC will broadcast its late after- noon program from 5 to 6 o'clock. It includes a plano recital by George F. Ross, a talk by Mary E. Turner and book reviews by Mrs. Nina Reed. LocalRadio Entertainment Friday, July 23, 1926. NAA—Naval Radio Station, Radio, Va. (434.3 Meters). 7:45 to 8 p.m.—Public Health Service lecture, “Climate and Health.” 9:55 p.m.—Time signals. 10:06 p.m.; —“'ea.lhu‘ Bureau reports. WRHF--W. uhinnon Radio Hospital Fund Committee (256 Meters). 6 to 7 p.m.—Dinner concert provided by Frank H. Edmonds and W. F. Rob- erts. AL~—Washington Radio (212.6 Meters). Stlent. . WRC—Radio Corporation (468.5 Meters). i 6 p.m.—George F. Ross, pianist. 5:30 p.m.—"Light Meals for Sum- mer Days” by Mary E. Turner. 5:45 p.m.-—Book reviews by Mrs. Nina Reed—'The Strange Case of L. Adams Beck,” by E. Barrington; “The Exquisite Perdita,” by E. Barrington. Early Program Tomorrow. 11:55 a.m.—Arlington time signals. 12 (noon)—Epping Forest Trio, broadcast from the Homer L. Kitt studlos. 1 p.m.—W. Spencer Tupman’s Hotel Mayflower Orchestra. ‘WCAP—Chesa e and Potomac Tel- ephone Co. (468.5 Meters). 7 to 7:25 ‘p.m.—Musical program by a section of the Nordica Mandolin and Guitar Orchestra of the Walter T. Holt Studio, Mr. Holt conducting. 7:25 to p.m.—Dorothy Neft Tyler, soprano. 7:35 to 8 p.m.—Continuation of con- cert by the Nordica Mandolin and Guitar Orchestra. 8 to 8:05 p.m.—Base ball news. 8:05 to 8:15 p.n.—"Market Sum- maries for the Consumer,” by the De- partment of Agriculture, 8:15 to 8:30 Dm—l"a.nme Shreve Heartstll, soprano. 8:30 to 8:45 p.m.—“Science Newn of the Week—Unearthing an African Empifre’, presented by Sciehce Service. 8:45 to 9 p.m.—Premier presentation of the "Insurance Quartet—Winfree Johnson, first tenor; M. LeRoy Goff, second tenor; Harry Middleton, first bass; Edwin ' Callow, second bass; Elizabeth H. Callow, accompanist, 9 to 9:30 p.m.—Whittall - Anglo- Persians from New York City. 9:30 to 10 p.m.—Musical program by the Mt. Zion M. E. Church Choir, James' T. Beason, director; Mrs. Mary L. Barnes, accompanist. 10 to 11 p.m.—Musical selections by the Hawalian Melody Boys—C. M. Rollins, Melvin Henderson, Charles Baum and Edward Piflngla Early Program Tomorrow. 6:45 to 7:45 a.m.—“Tower Health Exercises” from Metropolitan Tower, New York City. COAST SIGNALS ENDED. The transmission of standard fre- quency signals, which has been a ra- dio service of the Government for the past three years, has been abandoned at Station 6XBM, Stanford University, California. The transmission of the signals from Station WWV, at the Bu- reau of Standards in Washington, how- ever, will be continued through Octo- ber, when a decision will be made as to whether the service shall be termi- nated, Originally it had béen suggested that the service from both the Eastern and ‘Western stations should be abandoned this Summer. Numerous requests, particularly from the East, that the transmissions be continued led officials to posgpone indefinitely the closing of th(ei service from the Bureau of Stand- ards. Forum of America Colored Officers to Train. Qfficers of the 428th Infantry, col- ored regiment of the District contin- gent of the Organized Reserve of the Army, will leave Washington tonight at 7:30* o'clock for Camp Devens, Mass., to remain there for two weeks’ training duty. They will train with a contingent of the Massachusetts Na- tional Guard. Attachment Makes Piano an Excellent Radio Loud Speaker By the Associated Press. NEW YORK, July 23,—They're using planos for loud speakers now. A private demonstration was given in the Aeclian Building yes- terday of an_ attachment which amplified radio sound waves through the piano. Taking advantage of the syn- chronization of vibration between the radio waves and the piano sounding board and strings, the in- ventor produced volume several times greater than that possible ,:"hrouch the ordinary radio ampli- e e appliance does not interfere when the piano itself is being played. Tt can be played either in harmony or discord while the radio music is going through.it. The i ventor is F. W. Roehm of Minne- THE EVENING STAR, WASHINGTON, D. C. LONG RANGE RADIO ENTERTAINMENT FRIDAY, JULY 23, 1926 Programs of Distant Stations Scheduled for Eastern Standard Time New Yo Solufm Tarkes and ol00K ‘repo 5 T0 6 Pl. 5:00—New York: Hotel Jaidort. Amn: orehu\r York: Pi e v.w"%r’fi‘ cle: Gechos Stook in Weatier:” ton base balletint L Nn‘“ Fie Talk; Ernle Golden's Orehestra: sololst . recital; inet rogram; : Plano Pml-dxflpn Orchestra. uis: Market summar Spore” talk: age ball St New. ?Y.'a‘?fi:"um. trumental prog: Dramaiic. readings 6 46__“"““ fl;;flellam sneflonmm rnnrulr:::nm ,l‘rlo . 8 concert: . base ball resul hicago: PR TG Y final market repori -7T0 8 PM. 7:00—Philadelphia: Ukuleliers: nd instrumental wln Ru'ln 1 Sopton:. New Hotel Ken, orean concert: ol i 1 Teutits. Yew mxé cmuhlm Radlo. auction: the Singing Ground Ho poems “tal or= | Ensermbl siories: omgan recital rhest L Ofchestra Trio Wicon's Orvhlfl d 1 Al and instrumental wo ford Nh Y S ‘_’ orl Pau! ¥ QWI 8:00—Atlantic City: S Clevelan T Frank g R i Vogal ..o..5 K «unm,l Serenaders .’.fiaw ‘s Orch,(‘“ln Violin Ensemihie: talk: G bl Sm SRS g 3 Pl artfc l’d ien ot te: l(ullc Areng cadings nhn“:ch i Ray e s \mldml Band (‘mcuo Edgows le": Be of Tk o—fimn N.Y: B'y"enm allas: \:flsd musical progri rt: 'k Al Schenectady : ?:conm mb?um"r'-' § 10:00—New York: Pelnam Feah bm Omhmu York: Sirand orch ork: Denny’ ‘hest o en Quinte o Bulletin Chicago: ® Congress Carnival 11 oo—(énlc-m sm talk: weuther Aot g S -w-fl-w ‘Cllib, e Msic Boxr WON_Sintin i m')é suvgr Siivy ag' omuhm- §1....., : enm eon"efl bag: “Ti rehes eflunerl tects . ecpotno~y ESSS3 st SS 22 " Orches ¥hton Orcheat s 590 wao HES SHTRORD ORG bk PECr gy guggses pra e SPRe20 ahs 3 RIJXB22E B8R SS SaD Qe - ooy Caon OuMIdmcatoly 19 GO R oaise o0 2258 383 RERE B8R 33 12 MIDNIGHT TO 1 AM. m.n Bheibuirrie Orchesira. 12:45—Kansas our; ?u"mar Ho s i "‘ o] up o Flmet Boids Bniargiiar wiip WS HO FIFTEEN MINUTES OF RADIO EACH DAY BY JOSEPH CALCATERRA Noted Authority on Radio All Rights Reserved. Reproduction Prohibited. The Advant: o and Disadvantages of a Tube’s Oscillator Ac- tion.—Part IIL. 1f it ‘were possible fo use any num- ber of tuned radio frequency stages in a recelver in a manner which would make it possible to get the normal amplification per stage when one or two stages of this type of amplification. were used, the problem of bringing in distant stafons half way around the world hout in- terference from locals would be & comparatively simple matter. Unfortunately, thee property that makes a vacuum tube so valuable in oscillator, regenerative and super- heterodyne circuits, namely, the ac- tion of the tube as an oscillator, makes the use of more ‘than two stages of tuned radio frequency im- practical under ordinary circum- stances. The tendency of the tube to act as an oscillator when used in tuned radio frequency circuits throws the circuit into oscillation and causes very unstable operation -that is so critical that' it is not suited for prac- tical work. If it were possible to eliminate this tendency of the circuits to oscillate entirely no trouble would be ‘experi- enced in_increasing the number of stages of amplification to any de- sired number. Oscillaies by Low Resistance. The conditions that help to produce | q oscillation in a circuit are low re- sistance, resonance between grid and plate circuit, capacity coupling be- tween grid and plate cii ts mainly through the capacity existing between the plate and grid, electrodes of the tube, and inductive fe from plate to grid circuits which are placed in inductive relationship to eu;h other in thc proper polarity re- lation. These bad cflcell can, of courgg, be lessened by proper adjustment of apparatus and circuits and by the use of auxiliary neut: ng circuits, The um;ncy of th!-,e ci:ldnt‘;d‘) g; into oscillation. can u actually. introducing registaiice Iato the circuit; by grid control with a potentiometer, which causes a grid current to flow which is equivalent to resistance; by shunting the wind- ings of the radio frequency trans- formers with high resistances; by using radio frequency transformers ow;:h iron cores and other such meth- Decreases Sensitivity. Y While these methods succeed in curbing the tendency of the circuits to oscillate, they also decrease the sensitivity and selectivity of the cir. cuit so that from the standpoint of general efficiency we will 'be no better off with more stages with oscillation contro! than with fewer stages which do not tend to go into oscillation so readily. By far the most successful meth- ods of eliminating the undesirable tendency of the circuits to oscillate are those which aim to balance out or neutralize the grid to plate capac- it yo fthe tube. The neutrodyne is one of the popular types of bridge circuits which make use of this prin- ciple of elimination of interelectrode ca&uny through neutralizing cir- cuits, Reversed feedback circuits, as in the case of the superdyne, have been tried, but have not met with much popularity. While some of the meth- ods outlined have been successful in n way, thelr success is only relative yet real cascade radio fre- mmy amplification is -uu in: the ng. . Steamfitters on Outing. Fifteen hundred steam fitters and their hejpers, along with relatives and friends, are holding their annual out- ing at Chesapeake® Beach today. The excursion is under auspices of Local Union No. 602, with a committee com- posed of H. M. Brown, chairman;.J. M. Botts, B. L. Harriss, Frank Maley, Willlam Locraft, 'Charles Schmidt, W. L. Watts, 8. D. Zea. B. L. Harris FEW BROADCASTERS SHIFT POWER STATU Department of Commerce Field Inspectors Report Only Minor Changes by Stations. Only a small number of the broad- casting stations now operating in the United States are expected to avail themselves of the cpportunity given ' FRIDAY, JULY 23, 1926. them to increase their power to what- ever_amount they desire, according to officlals of the Department of Com- merce. Although no longer keeping a check on the power used at American tations, the radio section of the de- partment has received advices from its fleld Inspectors that very few in- increases have been made so far and that no radical ehanges in the status of the broadcasting power are antici- pated, It has been the policy of the de- partment since the national radio con- ference of 1924 to permit gradual in- creases of power at any stations de- siring the change except in cases where such increases would cause in- terference with nearby plants. It was . however, for a station de- Siring. €0 jump its output to make formal application to the department | and to receive full authorization be- fore proceeding with operation thirough the altered apparatus. Having been shorn of its supposed rights to regulate the station power, the department has stricken from its license forms the clauses that had to do with power, and now any station may operate with as many watts or kilowatts as it wishes. The only increases expected -in the immediate future are in the cases of exceedingly low-powered stations. The expense involved in any great jumps in power, it is belleved, will keep the majority of plants from changing their criginal power status. Sold by Beet Druggiste With Money-back Guarantee Continuation Sale at GOOD HOPE HILLS On Wednesday, despite the intense heat of the hottest July day ever recorded in Washington, I sold in less than two hours the entire first section of GOOD HOPE HILLS. TOMORROW, SATURDAY, AFTERNOON between the hours of 3 and 6 I will sell at ABSOLUTE AUCTION —two additional sections of this beautiful subdivision. Many of the choicest lets in the subdivision are included in these sections FREE! HOW TO GET Simply as an advertisement and to secure a large attendance, souvenirs will be given to these attending, including one Brand-new Ford Touring Car and two FREE! Building Lots, absolutely Free. You do not have to be a buyer or even a bidder to participate for the prizes. THERE: By Auto: Drive across Eleventh Street Bridge, turn left on Good Hope Road and follow same, which is concreted, direct to property. Or cross Pennsylvania Ave- nue Bridge, turn right at 25th Street and strulght ahead to property. By Bus: Take busses of either street car company going to Good Hope Hills. YOU MAKE THE. PRICE AT THIS SALE J. C. Benny Advertising Manager John C. “Real Estate at Auction” u\fiu wi Suite 332 Woodward Bldg. Washington, D. C. Phones—Main 457-458 Wagner FORT STEVENS RIDGE Semi-detached Homes For clear construction value and sensible use of space, will interest ‘the family with an average income CASH—$60 MONTHLY Prices, $6,985 and $7,150 (Some With Built-in Garage) Open every day until 9 p.m. Drive out 16th Street through Colorado Avenue to exhibit house, 729 Ritten- heuse Street; or call up and we will take you there in twenty minutes. Play Yards for Children Light and Ventila- tion on Three Sides Six bright rooms Full Tiled Bath Hardwood Floors Screened Throughout -~ WARDMAN 1430 K Street N.W.