Casper Daily Tribune Newspaper, February 8, 1925, Page 17

rae SUNDAY, FEBRUARY 8, 1925 vial casa Hise cca Sle Roxy’s Lingo .Wins Defense Of Doughboys Disciplining of WEAF ~Announcer Fails of Support By ROBERT T. SMALL, (Copyright, 1925, Casper Tribune) WASHINGTON, Feb. 7,—There has been so much talk in Washing- ton the past few days about the pro- posed “disciplining” of army and navy officers who have been engag- ed in the aerial warfare raging in congress, that the attempted ‘‘discip- lining of “Roxy"’ Rothafel by sta- tion. WEAF of the American Tele- phone and Telegraph company was almost overlooked, It ought to be stated, however, that congress was on the verge, the very verge in fact, of ordering a congressional investigation of the incident. “Roxy” is regarded as almost a Washingtonian for it was through him that all of the war veterans’ hospitals about the national capital were equipped with radio receiving apparatus and unquestionably his most popular audience each Sunday evening is composed of the disabled doughboys who did their bit in France or who met with enduring ailments in the war cantonments maintained in this country. The boys in the hospitals were ready to quit cots and crutches and go to war again in defense of Roxy. Each one was planning to take the matter up with “his” congressman, The soldiers were outraged that Roxy should be prevented from in- dulging in the banter and patter that have made his performances over the air so distinctive in their informality. Many of Roxy's remarks were ad- dressed to hig veteran friends in ‘Washington in other hospitals with- in the range of the broadcasting sta- tions putting out his stuff: The thought that “Roxy” was to be compelled to adopt the highbrow and near-learned tone and manners of the average radio announcer and be prevented from projecting his own personality into the Sunday concerts was too much for the doughboys. One of them sent word in to a radio editor that he was “bor- ed to tears” with the announcers who talk “like a floor-walker walks." The stilted manner of the great run of New York announcers, their. broad “A” and their would-be cor: rect. pronunciation of all foreign phrases, places and names are all very well in their place, but the swagger manner could not be ap- plied to the “Roxy'’ concerts with out breaking the spell and spoiling the whole works. Only a complete . surrender by WEAF in the face of an overyhelm- ing bombardment kept congress froni acting or attempting to act. As heretofore stated In'these dis- patches there has been a dearth of congressional investigations this year. The aircraft row is being worked up into a famous casus belli just beaause of lack of competition or a proper counter irritant. The attempt to discipline Roxy for being too facetious on the air is really an important step in the de- velopment of broadcasting, nonthe- less. It is a development in the line of certain stations specializing in certain progress and in a certain manner of presenting them. Certain of the New York stations, WEAF in particular, are desirous of being highbrow. They like to clothe their studios with the atmosphere of Car neg‘e Hall. They would invade the Metropolitan Opera House if they could.» Therefore, it was concluded Roxy was entirely too breezy for such an atmosphere. He would have to tone down or walk out. But these, highbrows reckoned without their invisible hosts. The fans pro- tested too vigorously. WEAF backed down. Neverthe- less, the future soon will see sym- phony statfons and jazz stations and various varieties of stations in be- tween. ‘Radio restaurants,” the “hired hand” at station WBAP_ down in Fort Worth, Texas, calls them. Virtually all of the midle western stations have thelr “breezy” an- nouncers and their community forms of entertainment and they na- turally, smiled broadly at the at tempts of the “effete east’ to dis cipI'ne so mild a person as Roxy Today, the untrammeled spirit, of the radio 1s matching or RadioRac ing Enthusiasts To Make Cleanup CHICAGO, Feb. 7.—Edith Bennett the race horse, named after Miss Hadith Bennett, the young American concert star, made her debut under colors in the third race at Miamt and won with ease against a field of the greatest two year old fillies in existence ridden some of the best jockies of the present day, much to the joy of # dozen or more Chicago radia bugs who also follow the ponies. Eddie Martin piloted the Bennett filly opposed by such masters as Parke, Stutts, Woodstock, Callahan, ‘Stevens and Grosser, Eddie and Edith proved an ideal combination The former rode a perfect race and the latter fairly smothered her field for speed. Inguddition to win- ning in a canter she also established a new track record, clipping four fifths of a second from the mark established by My Colonel for three and a half furlongs last week. Misé Bennett was the principal guest of honor at the recent Chicago Radio Exposition, where she was acclaimed as ‘the World's finest radio singer by a special jury of ex- perts. She is a big favorite In this locality, and when her name2 sake went to the post for the first time ny. yesterday she was liberally backed upon her next convert by @ group of local radio-racing en- here in April, Parts Are Easily Laid Out in This Mannef on Thirty-inch Panel. Novice Can Build 8-Tube (he Taaner Aundtan mribiune The Home Super-Heterodyne Now Simplified Parts Are Easily Wired Together and Will Bring In Distant Stations on Horn By PAUL McGINNIS, A careful builder can now construct the most elaborate radio set, the super-heterodyne, almost as easily as he can build a small set, because of the simplified form in which parts are now made, An eight- tube set will bring in the larger stations of the Bast and Middle West with a loop aerial, producing enou There are no difficult adjust- ments for the beginner to make in building such an elghttube re ceiver, and if he can place his wires as they are indicated in the | gh volume for a loud speaker, have the most imposing set known to radio broadcasting. The new ultradyne, which is a diagram he will have little expéeri-|type of super-heterodyne, I built menting to do in brder to produce the best results obtainable and with parts that anyone can pur- chase in local radio stores, and I DEVELOPMENT IS KEYNOTE a OF THE YEAR During 195, Dr. J. H. Dellenger, director of radio laboratory, reau of Standards, believes the de- velopment of a practical means of directing waves in concentrated beams in desired directions should be accomplished, including the use of this system at lower frequen- cles than heretofore. This system should also be adapted to the re- ductiong of interference. Introfucing another element of interference reduction, he antici- Ppates ‘Improvement in direction finders and the development of very directiona] receiving systenis. He also predicts the utilization of radio waves of between 150 and 15 meters on a regular engineer- ing basis, together with an in- creased knowledge of the possibill- ties of those waves and the mode of their propagation. Utilizing the higher frequencies, How to Increase the Wave Range of Set It a receiver fails to reach the higher wavelengths in the broad- cast band it indicates a lack of capacity in the tuning condensers. Sometimes the trouble can be elim- {nated by edding a coil of twenty turns of number twenty-two gage double cotton covered wire in series with the nerial. Another way is to connect a fixed condenser of .0001 microfarads capacity across the terminals of the variable con- densers and across the eerial and ground sh ee 12 Fog Signals Now The United States lighthouse getvice now has twelve radio fog signals along the coast, and is con templating more. Three lightships ye auxiliary. Bl the perfection of means for relay- ing and rebroadcasting may be an- ucipated in 1925, and adapted to various services. Broadcasting will, no doubt, take on a more def- inite service rather tham its origi- nal phases of novelty and pastime, he believes, anticipating higher quality in receiving sets and higher power in broadcasting sta- tions. Interconnection and higher power will give greater availability to programmes than in the past. Touching on the development in receiving sets, Dr. Dellenger be- Neves that a wider use of highly selective sets can be expected*next year and that progress will be made on devices for using alter- nating current as a tube supply, although batteries give good serv- ice and are hard to displace. Standardization in the radio in- dustry should eliminate a multi- plicity of parts and standardize transmitting and receiving tubes. Dr. Dellenger expects to see im- Provements in quality and speed of radio transmitted pictures through the efforts of numerous investigators and companies, In general, he looks forward to Progress in\many major problems of radio technique, such as various phases of the interference problem, radis measurements, radio wave intensity measurement and control and a reduction of the effects ot atmospherie disturbances. Spaghetti Not Needed Spaghetti tubing for covering the wire connections of a receiver is seldom essential, and in many cases has a capacity or choking effect which is undesirable. Use it only where two wires are in danger’ of touching each other unless you ate familiar with the capacity effect j and wish to dress up your set. RADIO ROBERT e atte 1 TWAN | KNOW LULA thusiasts, headed by James F, Kerr the Exposition Manager, Me. and his friends are sald to have | cleaned up close to two = Kerr dollars and they have ust pur- chased a Do Luxe udio #et with part of their winning#, which they intend to present to the young ar- tet with appropriate cetemonies appearance ‘Distance Added By Headset in Radio Receiving Apparatus Publio attention has been focused lately on-tranmoceanta radia yecep: Monwind the Ume i not far distant checked my work with the plans that came with the material so that I could figd the spags that others might come across when building a “super” without knowledge of its in tricate functions. I found that there was plenty of information packed about the parts which I purchased. I found that there was only one adjustment to be made in th am sure that I make that o1 nd then how to be come acquainted with the method of tuning so “that with only two dials you can go through the local stations and bring in programmes from Boston, Chicago, Davenport and Atlanta without any squealing whatever. I believe you can build a “super” which will produce a full and perfect tone for your loud speaker. > The set I am going to tell you about uses only two knobs in addi- tion to its two tuning dials, and when the two knobs are set once they need notabe touched again until your batt runs low or until Many Fans Do Not Observe Rule of Ether Conduct Despite educational efforts, ig- norance and indifference continue to play large parts {n radiation nul- sances. Many fail or refuse to recognize the fact that they them. selves often are the means of ruin- ing their neighbors’ enjoynient— and their own. A set that is radiating never can be delivering anything approaching sweet musical Ynotes or clear speech. At best there is a mushi- ness which thickens speech and garbles tones. If in no other way a receiver owner can tell when his tube {is in oscillggion he surely can by turning dow? the filament and adjusting the plate circuit control, The point where it is clearest 1s the proper operating point. Bringing in outside stations will be a bit more difficult, perhaps, but there will be greater satisfaction yall around. Where signals must be found by a beat note the tube fila- ment should be lowered to the proper operating point the moment the station’s carrier has been lo- cated and tuned in without the beat note. , If the beat note can be picked up, then the programme can be also without radiation. Increases Resistance, According to experts.of the navy, when several singje conductors are stranded to form Utz cable the dio-frequency resistance per | strand is increased. whon radio Usteners throughout the United States will sit in thelr homes and hear Mnglish, Irench, German, Itallan and Spantwh —broademsting. “This, declares M, ©, Iypinaky, ono of the plonoers in rudlo develop. ment and vico president of C, Bran- dew, Ino, “will {nereuse the demand for }ilgh powered peta using from 5 to 8 ttibes much mA tho mup odyne ang make radio he ie wish to force the set for weak ultradyne, and I!’ fan tell you how to’ Copyright, 1925, Premier Syndicate, Inc. | the oscillator coils.and the oscilla-/the set PAGE SEVEN How Front of New Super-Heterodyne Will Appear. and yolume by using a wire on the roof, The second condenser helps | \or tube to stretch out the incoming waves from distant stations. Sta- | tions can be logged accurately and you can select more than a score} of stations for your loud speaker with but an instant’s tuning. In the ultradyne, tuning is ac- \‘complished With two variable con- |densers controlling the first two | tubes: The tuning of the other tubes is fixed, which is the pecullar trick of the “super.” The first con denser tunes the loop aerial, or a coll coupled to an outside aerial if you wish to increase your range PLACE FOR . SPEAKER - | Much of the distortion present when using a loud speaker may be prevented by placing the speaker) In such a position as to keep echoes | and reyerberations at a minimum. Broadcasting engineers spend considerable time studying the acoustics of a place from which radi) programmes are to be teas mitted, in order that faithful repro- duction of the voice or instrument} may be obtained, Studio walls and| ceilings are constructed of a non-| vibrating material and heavy dra-| peries are hung in such a manner |that they may éasily be shifted and placed in the position which} is best for the instrument being played. Reverberation is the action of the echo repeating the original sound before the later had died }out. Its distorting effects are much greater than an echo and may be caused by the proximity| of any resonant material near the speaker. While it is physically impossible for the radio fan to take the pre- cautions that engineers do, a little| care taken as to the proper location | of- the speaker will often greatly | increase its tone quality, | A practical instance of the effect of reverberation is had in the case | of a singer breaking a wine glass merely by. singing into it. The singers mouth is placed near the glass and certain musical notes aie sung into the glass, when the sin- ger sings a note of a frequency corresponding to that of the glass, the latter will break. Another example of reverbera- tion is that of a company of sol- diers marching over a bridge or other hollow structure. They are instructed to break step so that the frequency of tle men's steps is different from that of the natural period of the bridge. It has been said that if a violin were tuned to the period of the Woolworth building and a note struck with) sufficient force, the building would collapse. ._—o \ Equator Divides Wave} ¢1In countries south of the equator ority | comply. wave so that it fits the other trans- | formers in the set, which are al- ready tuned in the factory. The 492-meter wave of WEAF, for in- | stance, is actually heterodyned to|a hundred doll about 1,200 meters, so that it will efficiently operate the four inter- mediate-frequency transformers, There are two detectors in a super-heterodyne. The first detects the wave picked up by the loop| and is on the extreme left of the | set; the second detects the 1,200-/ meter wave and is the sixth tube, coming just before the usual audio-frequency two-step amplifier on the right. The second tube in| is the oscillator which} changes the ware, and the third,| fourth and fifth tubes amplify at the intermediate frequency of 1,200) meters, { The cost of the set is les’ than even when. the| best of parts are purchased, Ir. 2. set f this kind nothing but the besc of material should be used. It| is advisable to buy the parts in kit form so that they are properly matched. The kits furnish the principal parts and the others must be bought separatery, as a rule. To-morrow the wiring of the set will be explained in detai. S OS Calls Stop All Broadcasting at Statiosn Along the Coast When an SOS call is heard by any commercial, amateur or private broadcasting station, the law pro- vides that all stations give 4t pri-| and cease sending. While many broadcasting stations are quite consistent in complying with / this regulation, Department of Com- | merce officials state that all do not | Frequently interfere~ ce in| noted, when a ship at sea is calling for aid and other ships and shore | stations are trying to communicate with her, relaying messages and locating ships in the nelghborhood | of the disabled vessel. Of course the distr call goes | out on 600 meters which should not} interfere with any but the broad- casters using wave lengths well above 400 meters, but a:i must cease transmitting until the announces that all {s well. It is possible that the department may permit broadcasters on the lower wave lengths to continue broad- casting during such silent periods, if they do not interfere with 600} When broadcast announcers are/ forced to sign off due to distress | calls, it is permissible, department rad{o officials point out, for them to announce the cause briefly s0| fans will know why the broadcasts ease. The simple announcement, | Ship in distress. Signing off tem- porartly. Station WRC” fs cited as @ model. Some stations do this, but others stop so abruptly that fans are at a} loss to know what is the matter; this is what happens when the| operator on watch hears the dis- tress call, and pulls the main) switch, It {s believed that if he) told the announcer to sign off as/| will cause losses b: suggested above, benefit to it would be a listeners, who often get the station back, wonder what is wrong with their set, and when radiating sets are used they fill the air with unnecessary squawks and whistles. Parts for “Super” he parts required to build an elghttube super-heterodyne of the ultradyne type are as follows: Panel seven by thirty Inches. Base board elght by twenty-nine Inches. Two variable condensers of .0003 mfde. One semi-variable or compres slon type of mica condenser, .0005 mfds, Fixed condensers 00025 mfds. Oscillator colls. Choke coil, 200 M. H Four Intermediate-frequency trans. formers, one of which Is designated as the first or “input.” Two audio-frequency transform ers. Two double-circuit Jacks, One single-circult jack. One filament switch, One potentiometer, 400 ofims, One rheostat 1.5 or 2ohms, Sow eral may be used. Eight binding pos' Eight tube sockets, Two vernier dials, Seventy-five tinned lugs. Thirty feet of bus wire, Cabinet seven by thirty by nine inches, Thirty-six wood screws. Tube Leads Must Be Well Separated The grid and plate leads should always be short and direct, and as far removed from each other as Possible. Proximity of these leads increasing the inter-capacity of the clerents and | often causing the tvbo to oscillate. of 006 and Navy | struggle for a half hour or so to| The capacity of the elements in the 199 type tubes is “ept at a mint. mum by running the wires frcm the ) Seal and through tho base diagonally | across from eath other, with the | filament leads separating them. Fixed Unit Increases Capacity | When your variable condenser will not reach the long broadcasting waves, connect a small fixed condenser and a simple switch across it as shown here. The addition to a fixed con- denser across the terminals of a | variable tuning condenser will in- radio reception is best during the months of July and August, which | is the reverse of the condition in| the: North. A ship ‘sailing along the equator can communicate most easily with the Southern stations in July and with the Northern ata tions in January. The re such set and eet woo to it that t dispensable on every manufacturers should therefory setn are equipped with n jack to contoct in the headset nx well as the usual provision for the conned tlon of the toble-tallge speaker, "Bome distant eintions tuned in on the loud other #tations a radio sot o can npenk crease the wavelength range of the receiver on the higher scale. If the set does not tune above 500 metres this fixed condenser ehould | have a capacity of .0001 microfa- rads to bring the range up to in- clude stations on the highest broadcast wavelengths. If the set of recelving are really fever heard until a 6 used “While It is a fact that some of the eunic recention was on loud speakers, headsets brought to a far greater percentage of fans tho faint wignals had passed over 3000 miles of water, Home were then able to bring them in en tho loud epoaker “The loud headset trans-c speaker demand Is a ‘ | ‘does not tune above 400 metres, a rger fixed condenser of .00025 mi- | crofarads capacity will be needed to_ accomplish the same resu When tuning to the lower wayve- lengths it is necessary to discon- nect the fixed condenser from the ciroult, which is done by a switch} connected as shown in the sketch.) When the switch fs thrown to the right, the condenser is in, and when it is on the right the con denser is disconnected, A loading condenser should be of the Iow-loss type, having a di electric or piste separator of mica The connections to the condenser may be made with tho afd of brass machine screws and nuts, which will form a binding post connector for the wires to the switch and variable condenser. If this type o! connector is not used, the wires should b soldered. Improve Tuned Radio Freqrency Receiver At the . sent time the produc tion of new adio circuits has sim mered dawn o minor developments on two types of hook-ups, namely, the tuned radio-frequency ofrcu! and super-heterodynes. Since super-heterodynes are rather co plicated and do not permit econo: mical operation, popular interest has been devoted to the various types of tuned radio-frequency re celvers. This type hay a number of dif ferent sub-classifications of decided merit but there is one form that {: especially worthy of attention, that is, the inductively tuned amplitier Condenser tuning has been found tigfactory. and it has become com mon practice to employ this meth od, This, however, does not alte: the fact that tuning by an induc tive control is superior, provided the inductances are of an efficient low-loss type. It Just Fits | growing one and {t will continue t be an exceptionally popular form reception. in bought to entertain the whol family and there are times whe the whole family want to listen.” pide AP tall Miguel Fleta, Spanish the Metropolitan opera, vadio debut January 29 peared’ before tho tenor made hi , when microphone After all, the radio set of ot of WEAF, New York, lio presentations king Macine Compan) ie] ta's program was relayed n ines from New Yo in Pittsburgh, Washigton Philadelphia, Buffalo, Providence Worcester and Boston 6 Riad id ic in the third of the Victor Mr. Fig by tele Mor resulta try a Tribune Classified Ad.