Casper Daily Tribune Newspaper, January 18, 1925, Page 7

a SUNDAY, JANUARY 18, 1928 Stage People Whi Take Up Radio Dispute Not All Are Opposed to Broadcasting by the ; the Stars By J,. C. ROYLE. (Copyright, 1925, Casper Tribune) NEW YORK, Jan. 17.—Some of the big theatrical managers and pro- ducers are laying plans for “fighting the alr." They wil! determine what action they will take with regard to radio broadcasting by stage stars when they meet with the Actors’ Equity association, January 26, Other managers equaly prominent decline absolutely, however, to be drawn into the fight against radio, declaring that such a campaign is “tilting at windmills." The results of the broadcasting programs by artists under contract to the Brunswick and Victrola com- panies have been so extraordinary that there is no likelihood that these programs will be abandoned. There has been such a demand for records of the songs broadcast by the Bruns- wick and Victrola artists in the Brunswick hour and the Victrola New Year's night program that the factories have been unable to catch up with them. It {s unlikely that, having given the plan a trial, the phonograph companies will ever be caught with short supplies again. They undoubt- edly will gauge outppt of records with reference to their radio pro- grams to some extent from now on, The radio programs have been in- strumental in selling many combin- redid and phonograph cabinets. The phonograph companies say that far from checking the sale of records, there seems to be a remarkable sales impulse from a desire to hear again whenever they wish the songs of selections they have listened to over the radio, The advocates of the controversy poin to the concert of John McCormack January 4 in New York as a refutation of the claim that radio injures concert or opera attendance. Although hun- dreds of thousands tn this section heard McCormick sing from WEAF station New Year's night, the audi- ence which attempted to hear him three days later would have been sufficient to have filled the hall to capacity three times over, This fact has not been lost ou other artists of the theaterical and artistic stages, The radio adherents add that 60,000 people a day still continue to attend New York theaters and that this in- dicates no injury from radio. One theatrical producer, Sam H. Harris, has suggested that the man- agers insist on a clause in contracts with stage stars prohibiting the tat ter from appearing for the radio without the consent of the manager. He declared the public would not pa- tronizo plays when they could hear them. for nothing over:the air, On the other hand, Daniel Frohman, a manager of years of experience, said: “The popularity of the radfo will never hurt a good play. The hu- ma&n appeal of the actors and a tresses who have been visualized and whose personalities, tempera- ments and artistic resources are felt r be effaced under any radio side of Catholic Church Service Will Be Broadcast Today MOOSEHEART, ILL., Jan, 17.— Roman Catholic church service will be broadcasted from Station WJJD (278 meters) at Mooseheart on Sun- day morning, Jan. 18, beginning at 8:30 o'clock, The service will be a high mass, to be celebrated by the Rev. Leon M, Linden, pastor of Our Lady of Good Counsel Church at Aurora, Ill. Permission to broad- cast the mass service was granted by the Rt. Rev. Bishop Peter J. Mul- doon, of the Rockford diocese. The sermon subject to be preached by the priest will be upon “Marriage.” This will be the third service from Aurora churches to be broadcast by Station WJJD, as a part of a pro- gram out! by Rodney H. Bran- don, executive secretary of the Loy- al Order of Moose, who practices the doctrine.of democraey in relig fous belfef. Radio Scores In Inventions At p ast Pace By EDNA MARSHALL, Copyright, 1925, Consolidated Press Association. NEW YORK, Jan, 17.—The fasc!- nation of picking sounds out of the alr has been so great for sclemtists and the curious public that inven: tions have been called for and made which have taken radio through a course of development with strides whose length have been equalled by ustry or art, ‘That is the consensus of opinion of Major f, H. Armstrong, famed radio sclontist, credited with the in- vention of the regenerative super heterodyne systems of receiving and John V. L, Hogan, inventor of the heterodyne detector, who {s now working on the development of a single conrtol system which may be applied to all sets. ‘The timo is at hand,” {t was agreed today, “when radio telephony will be established on ocean liners and passengers mey talk with per: sons an the continent from which they came or to which they are g0- Set Is DESIGNED FOR The above drawing is a circuit di stagé of tuned radiovrequency am) adding the fourth tube is primarily ft \lso an aid to greater selectiy: shouid have a special appeal to tho! barrage area of the local broadcastii Efficiency in thts radio fre- a: cy additiqn to the set is great- er .an that usually accompanying | such a change, because of the 1 Proved design of the amplifier. In the present arr@ngement a circuit of extreme sensitivity is realized, | and ono of surpassing selectivity, | because regeneration is producct in the amplifier as well as the de- tector cicuits and the signal passes through conducting paths of ex- tremely low resistance. By means of the variable resist-| ance connecied acyoss the plate) and “Bb” battery terminals of the radio-frequency amplifier, the con- stant of the circuit can be reduced to any value necessary to sustain | regeneration without squealing, or oscillation, The tapped coil which is in series with the primary of the Filter Tuner provides an ap proximately resonant plate circuit for low, medium and high wave bands within the broadcast range. Another advantage of the tapped} coil is in its choking effect against | some of the lower wave local sta- terference in many quarters, This coil has forty turns of double cov- ered magnet wire of twenty gage, wound on a three-inch diameter tube of bakelite or cardboard, and tapped at each terminal at the twentieth turn. The aerial coupler of the ampli- fier is also wound on a three-inch| diameter “ibe. It consists of a pri- mary of twenty-five turns, and a secondary of sixty turns of the same wire, with one-half inch sep- aration between the primary and tions which cause considerable in-| Variable, Resistance Wired TUNED RADIO-FREQUENCY UN.. IS| FILTER TUNER By J. F. J. MAHER jagram of the Filter Tuner with one plification, While the purpose of for an increase in reception range ity for this as well as any set. It se fans who are located within the ing stations, and should assist them greatly in penetrating the heavy screen of interference, ve is 1 ly, and the plate load coll -nted horizontally. The sec- m-| ondary coil js tuned with an eleven | plate varlable condenser of .00025 microfarads capacity. Regeneration control {s accom: plished with the variable resis- tance, which has a range between one-thousand and one-hundred thousand ohms, and is the same type as used in the Filter Tuner side. Only a hard or amplitying tube should be used in the addition, and forty five volts should be used on the plate, using a negative grid bias which is obtained by connect- ing the low-potential side of the secondary to the negative terminal of the “A” battery. -As shown in the diagram, the high potential side of the secondary is the one farthér from the primary, and it connects to the grid of the vacuum tube. In next Sunday’s page we describe the wiring completely and the arrangements of the parts to obtain greatest efficiency will be shown {n thorough detail. The set ig an extremely sensitive combina- tion and must be wired as shown in the coming panel aud base lay- out. The change trom the convention- al radio-frequency amplifier plate inductance of ten turns to one of sixty-five turns is not radical in that it lacks authoritative prece- dent, for the change is found also in a new receiver brought out by Marcon! in England, The problem of controlling oscillations which occur in large. plate inductances has been ,solved perfectly in this case by the use of the variable secondary, The coupler is mounted REGULARLY Due to improvements in trans- mitting apparatus on this side and receiving equipment in England, American programmes are being received nightly in London and otler parts of the country in their entirety. Letters commenting on the features are received frequent- ly by KDKA, WBZ and others, but Tuning Is Difficult If Coupling Is Tight When the coupling between the primary and secondary is close, there will be a great number of combinations of primary and sec- ondary adjustments, whereby ap- parent resonance points may be obtained. With tight coupling it is difficult to tell exactly at what point maximum efficiency {s ob- tained. Therefore, it is always bet- ter practice to increase the dis- tance between the primary and sec- ondary to a point where resonance can be obtafned only on one adjust- + resistance in shunt to this coll, AMERICAN STATIONS HEARD IN ENGLAND they are different from the ones which came at first, merely notifi- cations of reception. Lately the English fans have been offering constructive criticisms of the pro- grammes, their letters resembling those sent in by American list- eners, The enthusiasm of hearing across the ocean has worn off because the thing is now commonplace, and the Britishers are now comparing our programmes with theirs, in quite the same way a8 we would com- pees shose offered by WEAF and Magnetic Leak Causes Howl in Receiver Since there {s no known insula tion for lines of magnetic force. they cannot be entirely confined to cult consists of parallel branches, and, in the case of transformers, one flows through the fron core while the other flows in the air. It is the second flow which causes howling when it passes to other ment, W. GOODNIGHT» London and America which will make radio conversations across the | tic sea as simple and frequent as talks across the continent are today. The development of radio practi- cally began, according to Mr. Hog- an, back in 1904, when the erystal set. was developed through the ex periments of G. W. Pickard, discov: | erer of the crystal principle and 6a ar ca De ar mm ing. And the system of telephony | Wil have been <stublished between thi ve Marcon! worked with tuning {de and others. Tho slinplicity of the crystal set, strong distin parts of the circuit, hen the Sob Announcers Sign Oft n and ease of transportation are id to have been behind Mr. Pick- ‘d's dealre to develop it. The simple vacuum tube me into practicability in 1904, Lee Forest and J. A. Fleming were mong thowe responsible for its pro- ulgations In 1912, Major Arm: ies himself with of the regenerative which brought firet © discovery ingiple, the desired path. The magnetic cir-| @he Casner Sunaav Tribune 900 To 100.000 Ohms oot Wide World #a0to, Commuters of Berlin, Germany, telephone by radio while they are traveling to and from work in the.city. This sectional view of a German coach shows how the radiophone equipment isused. How to Connect Your New Model Receiver By OLD ‘We hope that your new radio set of pleasure,, and that it has worke: TIMER, is’ proving to be an endless ean d perfectly ever since it was con- nected. We fear, however, that in some homes there may be a great 1 of head scratching while father struggles to overcome the dif- 6 ficulties of wrong connections. To inconcet’ novice a simple battery and coil of quite bewildering, and it is for He: written. The vacuum-tubes should be well | seated in their sockets, so that the four pins will’ be in contact with the springs in the base, In con- necting the batteries a little pre- caution Is necessary to see that the terminals are wired to the cor- rect binding posts. The “A battery is either a storage or one of dry cells, which lights the fila- ments of the vacuum tubes, This battery has two terminals, one) marked with o plus and another with a minus sign, the former be-| {ng the positive and the latter nega- tive. The “B” battery {s sinfillarly | marked. The radio set has two binding) post terminals for the “A” battery | wires, and these are also marked with plus and minus signs. The plus post of the “A” battery con- nects to this plus post of the set, and the minus post of the battery connects to the minus post of the t, The same procedure is follow- ed with the “B” battery connec: tlons. In some sets the minus terminal of the “B” battery connects to the same post as the plus side of the “A” battery, and the binding post Js then identified as “A-plus” and “B- minus.” The “B” battery terminals are made of clips, which provide voltages in steps up to forty-five, The clip marked “22-%" goes to the binding-post on the set marked ed to vacuum tube receivers as the next development. and Chester W. accomplished this scheme of using « number of vacuum tu! louder, this signal as to exclude other the bestoals and disturbances, “Bdet..” and the clip marked | “45" conects to the binding-post | marked “B-amp.,” which are de-| tector and amplifier connections. It two forty-five volt “B” bat- teries are provided, the minus of | one should be connected to the Sly | Filament Will Stand B Battery Voltage Considerable service can be ob- tained with the batteries of a radio set reversed, according to F. Mele- han, of No. 435 East Sixteenth street, New York City, who says his tubes will easily stand twenty- | one and a half volts on a filament. He writes that he tried the Filter Tuner and tuned in a number of stations with this voltage op the filament and fix volts on the plate, It is often possible to-put a high voltage on a tube filament for a short time, but usually the filament will burn out instantly, its clarity of reproduc-| way of obtaining amplification with sel tivity, Tuned radio frequency was adapt» ot U Ww Vv. Tice, in L. Hartley individually mue engineering to make keeping them so w ch a signal tuned to sig-| need lonly for the expert who«made the set it is ble how even a child could fall to make it operate, but to the wire is something mysterious and latter's benefit that this article ts D ninety volts for the amplifier, The higher voltage produces greater volume. The two batteries should then be regarded as one unit and the remaining minus terminal should be connected to the plus of the “A” battery, with the other plus of the “A” battery connecting to tha binding-post of the set marked “B-amp.” The battery |mot to the plate of the tube, " battery plus is also the source of current for the detector. The rheostats should be turned up until the tubes glow, keeping them no higher then {fs necessary to get a good stgnal. If a loud speaker {s used make sure that the tip of the cord marked with a red thread is connected to the positive or plus side of the amplifier and The quickest way to make the test if lus of the other, which will give |the wiring is concealed is to re- verse the connections of the cords until the louder and more pure signal ts heard. ‘An inside aerial may be mad in a few minutes by connecting a wire from the aerial binding post of the set marked “Ant.” or simply “A” to a bed-spring or, if enough wire is on hand, it gan be run t length of the house, or around t whose minus side connects to the picture moulding, | MOUNTAIN INTERFERES WITH RADIO RECEPTION By OLD TIMER, Fafio fans in large cities are not the only ones bothered by poor reception in “dead spots,” + eem to be blocked out entirely. We are located in a valley, on one side of which is the Allegheny as | Mountain range, with another moun- readers in other parts of the coun-|tain covered with brush on the try have reported similat trouble. | other, running north and south. One fan, ©. J. toona, Pa., has written to for advice on how to solve his locai problem: “We are having great trouble reaching any station outside Altoc na, The topography of tie country around & h that signal The Air Slogans WPAZ.— Charleston, W. Va “Charleston, the Storehouse of the Nation.” WPG—New Lebanon, O, Pulse of the Miami Valley,” WQAE—Springfield, Vt. “Among the Green Hills of Vermont. WQAL—Mattoon, Ill, “The Buckle on the Corn Beit.’ QAN—Scranton, Pa. Voice of the Anthracite.” WQAQ — Abilene, Tex. Capital of West Texas,” WRAL—St. Croix Falls, Wis “Royal Order of Interstate Knob Twisters.” WRAN—Waterloo, la. “We Radh ate All News.” WRK—Hamilton, 0. “The Old est Station in Existence.” WRW-—Tarrytown, N.Y, “Every. thing in Radio WSB—Atlanta, Ga, of the South.” WTAM—Cleveland, 0, “The Voice from the Storage Battery.” “The “The “The “The Volce The super-heterodyno ayetem, most complex of them all was, haps the outcome rong's bappeniug nited 8 here, in 191 for YF be ations ates #ignal corps to France , there was a military 0 ing nakir hetero: radio used fe The eltr and hich cou! al observ is 28 the tele Masterson, of Al-| ask| station at Johnstown, only thirty: | dyne | No one has been able to hear the eight miles away on the other side of the mountain, nor has anyone in Johnstown heard our station {n Al- Another curious condition ts here in the difficulty air planes have in obtaining bearings while flying over these mountains. The aviators report that the instru- ments behave erratically. Another station at Harrisburg, one hundred and eighteen miles away, comes in at rare intervals, but this is the extent of our reception, with the exception of our station in town.” Here {s a problem that we do not know how to solve at this range, because it {s one of those pecullar conditions that need first-hand at- tention. However, we have a few suggestions that may help, one of which is to erect a high aerial at right angles to the plane of the mountain range, and the other is to use a large loop, about four feet square, and three stages of radio frequency amplification, Having sald this much, we are at a loss to so further. nr Increases Voltage The series connection of cells {s employed when high voltages are desired. To obtain an increased vollage connect the positive ter- riinal of ene cell to the negative terminal of the next, repeating the eennection to each cell. tlon The super-heterodyne » same as the hetero- with an adaptation to radio go with the| telephony that gives extremely loud signals nd sharp selectivity onde; during the later ‘aa been rd_ refinements aid Mr. Hogan striking devel lopment of the 1920 has been re the average “The te ntlons, been few The deve nsmitter since KOA He Another national radio voice— KOA—the Rocky Mountain broad. casting station at Denver, Col., is| now being heard from coast to coast. The wave length, for the present, will be 323 mefers, and the power fating 1,500 watts. Small receivers on the Atlantic coast may hear the station because of its high power. It's sister sta- tlon—KGO—at Oakland, Cal., has been much sought for by fans who want the honor of reaching from coast to coast, but few small sets have reached it, The new Denver station is at the foothills of the Rocky Mountains, about 1,500 miles from New York by air, and will provide a good test for a radio re- ceiver, It will be found on the dials just below KDKA of Pittsburg, Pa., as its wave is but three meters shorter, Opening of KOA marks the com:| pletion of the chain of three broad-| casting stations across the United| States, WGY at Schenectady, N. Y.,| and KGO at Oakland, Ca}. KOA {s the half-way point be- tween, the Mississippi and the Pa- cific and Canada and Mexico, and will be heard by millions from one end of the American continent to the other. Already hundreds of letters, telegrams and long distance telephone calls have been received at the station in response to a ser- ies of unannounced tests under the| experimental call letters of 9XA. “From foundation to roof, this station has been designed and built | for the sole purpose of radio broad-/ casting,” declared Martin P. Rice, who recently supervised arrange- ments for the opening. “It emhodies.all the techincal and mechanical improvement suggested by the experience of our other broadcasting stations. “While KOA will be operated at 1,500 watts, the equipment has ad- ditional capacity available for teat- PAGE SEVE! How the four-tube Filter Tuner is wired, All connections indicated here will be shown next Sunday as they actually appear. Save this hook-up for reference HowaFour- Tube ard from Coast to Coast loads and transmission wil! be marked by greater reliability and ex cellence of quality. Additiona power {s afforded also for expert mental purposes.” Cost of construction approx! mated $175,000, and it {s estimate¢ the’annual cost of maintenance wil reach $100,000. The KOA staff when completely organized, wil number twenty members, including a resident engineer in charge 0 technical operations, programme manager, operators and announcers and members of the news bureat and the office personnel. KOA'S anten stem, 120 feet long, is 150 feet above the ground and is supported by two triangular steel towers, 260 feet apart di rectly beneath {is tbe two-stors studio building in witkh is housec a large reception room, waiting room for artists, general offices and a concert studio and auxiliary of speakers's stucio in the rear ang) adjoining 1s a one-story power house and generator room. For the present programmes wil! be broadcast three nights a week in addition to Sunday features. ee prEs, How to Connect a “C” Battery Properly The purpose of the “CO” battery is to malntain a constant negative! gtid Dias on the amplifying tubes The grid should always bo nege tive ss regards the polarity of the plate, The minus (—) post of the “C™ battery goes to the filament terminal of the transformer, and the positive of the “O” battery tq the negative of the “A” battery. There is now on the market a transformer on which the grid re turn connection { ing. As a result, tubes and recti- fiers will not be subject to over Only a Radio Fan ““C" battery. Can Find the Key to This New Cross Word Puzzle Here is a radio cross-word puzz thould not exceed 5 minutes. locking. who duce many into the reali of pencil solution will be published on this page next Sunday. And this puzzle is element; Horizontal 1—Support. 6—Method of payment—abbr 7-—Middle letters of the call of an Omaha station, 5626 meters | 9-—End letters of the call of a Cincinnati station, 309 meters. 10—End letters of the call of a Long Beach, Cal, station, 240 meters. 11l-—The abbrevation of the Stato 18-——Voltage-—abbr, 16—What rheostat does. broadcasting machine in days four years ago had range of some 60 mil transmitting converse rope regularly. “Re-broadcasting, tleups of numerous broadcasting to the n national importance, biggest. ‘s feats ¢ lopment with the same one © that is simple, and the time Imi The radio programme in to-day’ paper can be used if no call book {s on hand. get at first, but the un-keyed letters are R and ©. The rest are inte: 5 down may be hard to| ary, it is an ideal starter for tho; yet have not tried solving one, and its simplicity should intro: chewing and head scratching. The! Vertical 1—Name for « single circuit re | ceiver. 2—Type of current—abbr. 8—Inductances. 4—First and last letters of the call of a St. Louts station, 546 m ters. 5—Three-element vacuum tube. 8—Long wire—abdpr, 9—Current gage—abbr. 14—End letters of a Jetfersog n, 441 meters. 15--Game as 14, tremendous plece of work,| ing sets have been develop-| rfected by organizations! And with the growtb| of effecting single con bh still would make) 1 they have been when operated ‘by nunt- knobs, radio will have be-| le and so have made| pulartty,