Evening Star Newspaper, July 6, 1922, Page 22

BY A. HYATT VERRILL, Expert on Radio Technology. t you go on a vacation this sum- and find yourself without an btial or loop you need not despair, nature has provided excellent Bstitutes in the trees. To many novices the fact that trees 4y be used as antennae Wwill géthe |a surprise: ‘Instructions for eréet aerials invarfably caution ygu 1o iflqulate your aerfals and lead-ins om trees and buildings, but using for an aerlal and letting an ordi- v aerial touch a tree are quite fferent matters. he use of a tree as an aerial of the discoveries made by Ge deprge O. Squier of the Army Signal brps. who was also the discoverer the remarkable “wired wireless” 4 many other radio stunts. During thd war countless messages were re- ived by means of trees as aerials 4 with a tube sct signals may be ked up for a distaace of forty ifes from a broadcasting station. ile the signals will be far weaker n those coming over a regular ial, they may be amplified consid- bly. The tree aerial, however, not prove satisfactory with a crystal, “set ynless very close to a station. Grounding Dificult. The “difficult part of rigging Up & tree for an aerial is in constructing the - “ground.” _An - irop or metal stake or tube driven into. the earth will serve at a pinch, but it is not satisfactory and the dnly,wayto se- cure good results is ta’ put in a burfed eounterpose. - This .consists of a.bare copper wire (No. 1% or 16 size): about twenty-sight feat long, one_end providedswith someé:sort of “clamp’ or binding post, which can be well connected with a wire lead- ing to the set. Along this wire, at equdl distanices 'apart, .you should solder eight or ten other wires, each about twelye feet in length. When you, have selected the tree. which should be forty to sixty feet high,. dig_a circular’ ditch around it, about ten inthes deep, keeping the ditch about three feet from the trec trunk. Lay your ground wire in this. Then straighten out the twelve-foot radiating wires, dig ditches wiere cover thé whole with earth, and drive highest point, you can reach bélow the first branches. Fasten a wire to this nafl, drop it down and connect eto the aerial post of your set. onnect the ground post of your re- ceivers to the wire leading to the counterpose in the trench. | ‘We ™ jmust remember that ‘a_very large: ‘portion of the radio waves travel through the earth @nd not through’ the air, for they move }through ether and ether permeates all solids as well as liquids and air. When we drive the nail into the tree.. trunk we provide a potential ecarth terminal, and as the radio waves con- stantly cause changes in the earth’s potential we bring these in through Signals With Aecrials. It is possible to pick up radio sig- nals from the earth without an aerial of any sort. and the beginner or amateur fond of experimenting will find a great deal of interest, amuse- ment and real value in trying various stunts along these lines. By merely grounding a set and with 1o aerial of any sort, signals may be picked up for long distances with properly arrenged sets, but you must not- expect to get signals as loud or as clearly with any of these devices as with-a proper acrial. Even the best loop aerials fall far short of overhead out-of-doors antennae in this respect, but by using radio and audio frequency amplification excel- lent results may be obtained with- out the bothersome and cumbersome | aerial. (Copyright, 1922.) e vacuum tube illustrated may, jording to - the manufacturer, be ly used for amplification and as an Gillator tube. Any other use con- itutes an infringement of patents Vering tubes used as détectors. As {amplifier, however, it is claimed be very efficient and to have a tage amplification factor five times it of the usual types. This is said ibe due to the design, which per- {s the use ‘of high voltages, up to volts, on the plates. The tube lexhausted to a high degree of is what is known as a A special filament ma- al is used-and very little filament ent is used. Theé average current sumption per - tube-is: .8 of .one vhich Is somewha n the average of most tubes. There herefore, less drain on a storage used fo filament lighting * battery). The filament goes ight _through trom one end of the to the other. The grid is a spiral plate is cylindrical, quite similar the usual design. The comstru h is very fugged. The manufa ers claim a high percentage of un. in their product, which is P T P T [ vacuum tube, when used as an plifier in a multistage amplification ¢uit, must be free from noises or tubes in succeeding stages will lify the nolses along with- the A rapid fire a snowball fight night you sleep On the way stop at WRITRE . Round trip FOR FRER us toll you BOOKLETS and By Ralph Brown, Radio Engineer: THE HIGH-MU AUDION. a dip in the Pacific. At 10 A. M. motor over wonderful boulevards through orange groves andup the highmountains and have A vacation and an education; go this summer. derful organ in the Mormon gull on the waters of Great Salt Lake. Side tripto Denver and scenic Colorado without additional cost. Take in Yellowstone National Park enroute. The LOS ANGELES LIMITED eaves C. & N.W. Terminal, Chicago, dajly at 8 P. M. CONTIN TAL LIMITED leaves 10:30 A. M. “Fares Greatly Reduced and No War Tax e-?y"_'lhhml these wires- lie on the ground and | a_ large snail ‘into' the trunk at, thep: the nail terminal and the counterpose |. *| terminal. - 'BY: RADIO_TODAY Complete Programs of Radio . Broadcasting' Stations.. NAA-~Naval Radio Statien, Radio, Va. 8:45 to 9 a.m.—Live stock receipts; live stock. markets. : 10 a.m.—Weather forecast for New England, New York, Pennsylvan New. Jersey, Maryland, the Distriot Columbia, North and South Carolina, Georgia, Florida, Alabama, Mississip- pl, Tennessce, Kentucky, West Vir- ginia_and Ohio on 2,950 meters. 10:30 a.m.—Meteorological report on 5,950 meters. 11:15 to 13:20 a.m.—Hog flash—Chi- eago apd St. Louis. 4 11:20 to 11:40 a.m.—Fruit and vege- table shipments. Noon—Tlme signal; weather re port and ship orders on 2,650 meters. 1:40 to 2:25 p.m.—Fruit and vegeta- ble markets. 2:25 to 2:55 p.m.—Crop reports and special -market news. 3:45 to 4 p.m—Closing live stock markets. 4 to 4:15 pm.—Hay and feed mar- —Weather report, , 0 to 6 p.m.—Daily marketgram. p.m.—Time signal; weather re- port; ship orders; 2.650 meters. 10:30 ‘p.m.—Naval press news on 2,650 meters. Except where noted, sending is CW 5,950 meters. - WYX—FPost_Ofice Department. 10_a.m—Weather report for the District ‘of Columbia, Pennsylvania, Ohio, Maryland, Virginia and West Virginia. 10:30 a.m.—Marketgram (fruit and vegetables) on 1,100 meters. it naturally does not have the “hiss- ing point” characteristic of soft de. tector tubes. When used as an 0s- cillator the tube will oscillate freely on plate voltages between two and three hundred volts. The plate cur- rent at the high voltages is at all times under control of the grid, due to the high vacuum. At both ends of the tube are caps of malded insulation, The plate ande one of the fllament leads are brought out at one end, and the grid and other filament leads are brought out ] | { i signals. It is clalmed that the high- mu tube is free from all mechanical noises. Being a high vacuum tube n Two Hours am of fun. After breakfast before luncheon. And at under blankets. Salt Lake City; hear the won- float like & EN- than fare one wey. Let you can make the trip on California. of the opposite end. The terminals, two in each cap, are 8o arranged that quick and easy connection is made when the tube is pressed into the holding. clips of the receptacle. A ecial form of receptacle is used, nce the tube will not fit in the standara tube sockets. This recep- tacle is a one-piece molded condensite block, 2% Inches by 41 inches. The contact clips are very strong and hold ‘the lamp very rigldly in position. One cap ‘of the tube is red,’ while the other is black and the receptable is so marked that it is impossible to make the wrong connection. alongside. 12:30, 2:16 and 3:30 p.m.—C. W. marketgram telegrams on 1,980 me- ters. 0 5 p.m.—Wholesale dairy report on 1,160 meters- by~ radiophome. 7:30 and 8 p.m.—Market report on 1,160 meters by radiophone. 9:60 p.m.—Weather report. WMU—Doubleday-Hill Electric Com- pany (300 Meters). 4:30 to 5:30 p.m.—Base ball scores and music. . 8 m.—Miss Erminie Lewis, so- prano; H. A. Lake, baritone; R. C. Kassebaum, violin, and Mrs. Howard Blandy, accompanist. “Love Land” (Friml), &and “Resalie” (DeKoven), Miss Erminie Lewis; “Pavatines” (Hafr), “Bolero” (Bohm)-anad “Schon (Kreisler), R. S. Kasse- Invictus” (Huhn), “Toreador Hula” (Frotere), “I Hear a Thrush at Evi (Cadman) and “Life and Death” (Taylor), H. A.-Laake. WPM—Thomas J. Williams, Inc. (360 Meters). 12:30 p.m.—News items; reports on stolen automobiles. Rosmal baum WVP—United" States "Signal Corps, Bedloes Island, N. Y. (1450 Mefers —Eastern Daylight-Saving Time— Deduct One Hour). 8:50 p.m.—Instruction in radio™ 9 p.m—Concert. WGI—Amrad, Medford Hillside, Mana. (360 Meters — Eastern Daylight- Saving Time—Deduct One Hour). 2:55 p.m.—Music, current events. Musi¢ and talks as an- radiophone. —Base ball es. 5 3:30 p. nounced by p. scores; late news flashe \ :30 p.m.—Bedtime story, ¥Two and a Honey Pot” (Norwood, Youth's Companion), read by Miss Marion W. Parker, instructor of arts, Brookline High School. 8 p.m.—“A New Industry—the De- hydration of Foods,” Paul F. Nichol investigator in commercial dehydra: tion, United States bureau of chem- istry. , 8:16 p.m.—Hesperus Quartet of Bev- {erly, assisted by Rosette Le Page, dramatic soprano—Robert Sandberg. first tenor:; Joseph R. Lemery, seond \ tenor; G. Lester Morse, baritone; E gene ' Potter, bass. “On the (Buck); “I'm Gwine to Sing in the Heavenly Choir” (Milligan), by the quartet. Soprano solo, . P Tis Morn” (Geibel), “ (Gerricke), “Sanctus” (Osgood), “Ab- sent” (Metcalf), the quartet. Read- ing by Mrs, Le Page.” ‘“Maid of the Valley” (Brackett), “To Thee, (Eichberg), by the quartet. at the piano by .Loretta “Stolen ~Fruit” (Nutting), (De Koven), “Magic e Colbert: “Oh Promise M of Your Eyes. :15 p.m. ary E.S. Ranton, mezzo- soprano and pianist. Piano solo: “Grande Polka De Concert” (Bart- lett), “Rondo Capriccioso” (Mendels- GASOLINE THE VOLATILE GAS . (Vol-a-tility: the recdiness with wbi;ll £gasoline gives up its power) You needn’t give way to the car * Your car needn’t be sluggish in getting out of traffic pinches. All it needs is Texaco Gasoline. Run it with Texaco Ga.;oline—Savc it with Texaco Motor Qil Texaco Motor Oils are heavy-body ubricants.andare distinguished *'by their clear, golden color. Light, medium, heavy and extra-heavy— they £it all.cars and all conditions. You will find Pt l them wherever you Compeny, U. 8. A. Texdt Petrilewsm Products sk (Lohr), (Dorol). KUKA—Westinghouse, East Pitts- rgh (300 Moters—Eastern Stand- ard Time). '9 to.9:15 a.m.—Music. sohn). Song: y “Rose of My Heart" Garden of Your Hear (Ashford), “The 11:30 a.m. to noon—Music. 2 p.m.—Popular concert by the Nov- elty Entertainers. ing 2:30 p.m.—Base ball scores by In-) ¢ nings. s 6 p.n.—Theatrical ball scores. 6 p.m—Harry Greb, America’s champion light-heavyweight, will tell how to keep physically fit through| systematic exercis i 6:30° p.m.—Popular concert by the Dixie Melody Boys, L. H. Feiling, manager. 8 p.m.—Novelty Six Orchestra: James Hays, pianist; John Van Hofen violinist; Robert Dodds, xophone Alan Dodds, banjo; Morris Hutchin son. drums, and Peul Btewart, cornet | ioist; John Ingram, temor, &ccom- panied by Elwood Knap] Howard Kelster, trombone, accompanied by Mrs. Mary Keister-Kerr. solos—"“Barefoo “Mither features; ba: Levey; “The Wondrous Rose,” Burn ham. Trombone solo—"Evening Stai from Tannhauser-Wagner. solos—"0D Promise Me," “Serenade,” Chambers; Faure; “Answer,” Robyn. I trombone duets—*“Miserere, | Trovatore," “Rosary, Orchestral selections—*“You Can Hav, Blues,” M KYW—Westinghouse, Chicago (380 Meters — Central Daylight - Saving Time — s Enastern Standard Time). 9:25 a.m.—Opening market * quota- tions, Chicago Board of Trade. 10 a.m.—Market quotations at one- half hour intervals until 1 1:20 p.m.—Closing marke! tion: g 2: 3 pm. League base ball team line-ups; prog: Fess of games every half hour there 15 p.m.—News; market and stock orts. rep 6: final market and base ball reports. 00 p.m.—Musical program by Joan Young, dramatic soprano; Fay Swartz, accompanist; John E Stamford, tenor; Menkes, accompanist; Paul G. Hum- mel, pianist. Program: Soprano solos—“Aria from L'Roy D'¥s” (Lalo); “Spanish Song” qmqo); “Dainkas Song” (Von Stuts- m “Lift Thine Eyes” (Logan). Co solos—“Fantasia Conocertante” (Von Wever); “Forsaken” (Koschat); “Sing Me to Sleep” (Greene); “Ye Banks and Braes of Bonnie Doone” (Scotch). Tenor solos—"Ah, Moon of My Delight” (Lehman); “Calling Me ST ——To [ el —— o [—— I ° Home to You' Mother of Mi (Foster) WJIZ—Westinghouse, Newark, N. J. (360 Meters—Kastern Daylight-Sav. Timo—Deduct One prices as released by New o] ——] ! - CAUSE T saw MY DADDY ‘GET 17 OuT!! . : » Insiessammaians eevees (Tesc] ne” (Burleigh): “Sacra- DROEFAmE 6 p.m—Weather forecast; agricu tural reports: program of music. ~ 7:00 p.m—"Jack Rabbit Stories,” i David Cory. [ pm*—“Taking the Work Ous of: Housework,” by Mrs. L. C. Reed, head! of the department of home economics of the Society for Electrical Develop- ment. _8:08_p.m.—Concert by the Twelfth (Continued-on Thirty-second Page.) Duo Art recital: A Noon—Agricultural reports; weath- er 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.—Program of music. 3 p.m.—Program_of music. 4 p.m.—Base ball scores: women's fashion news: program of music. (Mascagni); nnie Laurie. Hour). a.m.—Agricultural r rts and ork, Ne! e Nearly a Thousand Men Can Discard Their Soiled Straw Hatsy, and Start the Season Anew, at a Very Small Cost. Sale of Men’s Straw Sailors 12 BEST ieces CeaEAATE aRR LT Ie e “Absolutely and positively” the hat value of the season. erieasremer New hats, right at the top of the mode; fine Sennets with plain edge, cord edge, saw edge, radio and double radio edge; also snappy row-on-row straws. Not heavy, cumbersome hats but zephyr weights, made additionally <omfortable by cushion sweats. Plain black or brown silk band and bow. A size for every head—$1.29. Direet Street Entrance to Mea's Shop LANSBURGH & BROTHER N [c——[o]——=Jelc——f[o]c——[o]c——]aj——=]0] rineaeress eresentinwme v LANSBURGH & BROTHER |H Bargain 6th Floor e AnotherGreatJulySaleFriday! Each event steps one rung higher on the ladder of value-giving. We must benear the top, for this sale offers far more for the price than we had hoped to find. Step lively! ! 600 Voile Dresses "I"Vorr.n‘andie Voile Included These styles are the most:attractive yet offered—materials are fine, and the colors and patterns beautiful—Polka Dots—and alt kinds of figured designs, both light and dark. Side panel effects, straight or waistline models, with vestees, collar and cuff trim- ming of organdie laée or ruffles. Plenty.of large sizes from 40 to46. : See 8th St. P AR E VAN RPN BART PN A RPN e TR wenrerriererremrat PP——