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GREAT BRITAIN PLANS TO PASS LAWS GOVERNING GROWTH AND USE OF RADIO?
English Expert Visits U. S. to Study Broadcast ing Conditions. "Great Britain will solve the In terference problem in radiophone broadcasting by government con tfol and regulation," according to A. P. M. Fleming. C. B. E.. manager of the research and educational de partment of the Metropolitan-Vlck er? Electrical Company. Manches ter, England. Mr. Fleming repre sented England at the International convention of the Institute of Elec trical Engineers and the Interna tional Electro-Technical Commis sion at Niagara Falls. Just ended. "We have learned many valuable lessons from the broadcasting ex perience of the United States." said Mr. Fleming. "One of the things we have learned is to avoid the es tablishment of innumerable radio stations, with no plan of co-opera tion between them. Eight 1H kw. stations are contemplated and some of these will probably be built this year. These stations will be located In the principal cities throughout the British Isles and will be oper ated so as to eliminate the chaos usually found where no rules are In force. Prevent Broadcasting. "We have no such thing as broad casting In Britain at present in the same sense as the term is used in America,' he said. "Government restrictions have prevented it. on tccount of the possible interference rith the requirements of the navy, mercantile marine, war services and aeroplane traffic. But the largest t manufacturers of radio apparatus have co-operated with the British government officials in working out plans for the proper control of broadcasting. "The broadcasting stations will be operated on strictly reerulated wave lengths and other set rules. | which will he published for the j guidance of radio receiver owners. ! ) Every radio set owner will be re- i quired to pay an annual tax. also, j and there wi-l doubtless be special i restrictions applying in times of j national emergency. "One thing that British manufac turers have had to do that was not necessary in America, was to study out c!o**ly the cost of receiving sets. The average Britisher can afford to *p*nd verv much less than the American In nurch??:ng appa Tests Directional Loop. (C) Uoderwood & Underwood. This five-foot loop used for determining the direction of ra dio signals is being experimented with at the Bureau of Stand ards by F. H. Kngel. The loop, on being rotated is alternately in a strong and weak magnetic field detected by the strength of signals heard. From scale readings the direction of the received signals is calculated. ratus of the nature of a luxury. But even with that drawback the TJritish manufacturers see a great field ahead for the radio." Makes Radio Survey. Mr. Fleming, in addition to rep resenting the Institute of Electri cal Engineers of England at the Niauara Falls convention, is mak ing a survey of radio developments in America. His survey may have considerable bearing on the regula tions drawn up for government control of broadcasting in Eng land. Listen In! A Radio Expert?ready and anxious to help you?at Peoples' Radio Dept. Visit Peoples Radio Department at our Store No. 2. Seventh and E streets. You'll And a complete stock of flrst-class Radio Equip ment at prices that are eminently fair. Complete machines and necessary parts are here in a pleasingly large assortment. Our radio expert will consider it a pleasure to s?rye you. Standard V. T. Sockets to SI.SO Stromberg Carlson Plug S1.25 Pacent Plug Pacent Twin Adapter Pacent Multijack SI.50 Pacent Jack S. Circuit 80c Pacent Jack D Circuit . Sl.oo Ant. Insulators?all types 10c to 9?<* Spaghetti, tubing, per foot 10c Audiola Crystal Receiving Set. with R. S. phones and an tennae equipment, complete S25.00 Audiola Set. separate S15.00 Mesco Jr. Receiving Set, complete S30.00 Mesco Phones. 2000 ohms S5.00 Westinghouse (Baldwin. Type "C." unit), loud speaking at tachment for phonograph, with cord and plug S18.00 Aeriotron, 6-V. U. T SS.SO Aertotron. 1%-V, W. D.-ll. V. T S8.00 U. T. Socket for type W. D.-ll Sl.50 Special?U. V.-201 Radiotrons. were $6.50 SG.20 Grebe C. R.-5 Receiver SSO.OO Grebe Type Rork, 2-stage amplifier S55.oo Magnavox (loud speaker) S43.00 Magnavox (loud speaker) SWJK) Vocaloud (loud speaker) V S35.00 R. C. Radio Transformer S0.5O R. C. Audio Transformer 57. OO Paragon V. T. Control Unit SO.OO Paragon Filament Rheo S1.00 Nutmeg Buzzers 56c Nos. 22. 24, 26 single and double cotton covered wire, % and H-lb spools 30c to ?5e U. V.-200 Radiotrons $5.00 R. C. Power Transformer, model U. P. 1968. Regular price, $25.00. Peoples price 530.00 8ervice, **Little Wonder" Crystal Set. complete $15M) Service, Intermediate Wavo Crystal Set, complete S32JH) Binding Posts ..4c to 3Se Galena (tested) 20c and 30c R. R. S. Multipoint Crystal, very sensitive, guaranteed 60c Ruco Receiver, Det. and 2-stage S130 Westlnghouse R. C.. Det. and 2-stage si30 Dictograph Phones. 3000 ohms Sio.oo Brandes' Phones, 2000 ohms 58.00 Universal (Roller-Smith). 2000 ohms 58.00 Murdock Phones. 3000 ohms....** SO.OO Mesco Phones. 3000 ohms 59.00 Copperweld Ant. Wire. 200 feet Si.00 7-strand Ant. Wire. 100 feet 75*. Geraco. H. R. Dial Sl.oo Antl. Cap. Dial Sl.oo Fada Inductance Switch, with contact points ssr Wound Coils, 6-inch Wound Coils. 8-inch 51.30 Acme Single Phone 52.00 43 Plate Variable Condenser S4.00 23 Plate Variable Condenser 53.00 3 Plate Variable Condenser SI 70 Simplex Filament Rheo... ..51.00 At water Kent Filament Rheo Sl!25 AJax Vernier. Filament Rheo... SITS At water Kent Audio Transformer .5700 Atwater Kent Variocoupler !!!!s8!oo Atwater Kent Variometer.. sroa Dubilier Ducon Si 50 Pacent Audioformer axon Honey Comb Coils? No. 35?Unmounted for.^ No. 50?Unmounted 1.1?"ta? No. 75_Unmounted T4_ No. 100?Unmounted No. 35?mounted ..... No. .75. mounted.. ALL OVER TOWN New Mexico Boy Wins Hoover Cup * I Reward for 1921 Is Made for Best Amateur Station. Following the announcement made one year a so by Secretary of Com merce Hoover that a cup would be offered to thf beat amateur station in America, much interest has been man ifested by young radio amateurs in the competition. It was won last year and has just been awarded to Louis Falcon!, builder and operator of sta tion 5ZA at Roe well. New Mexico. The conditions of award are that the cup shall be given by the board of directors ot the American Radio Relay League. Secretary of Commerce Hoover, who is in charge of governmental radio regulation, last fall offered a cup to be presented each year during hi* administration throuph the American Radio Relay League to America's best all-around amateur station, the ma jor portion of which is homemade, as determined by a consideration of the extent to which the apparatus was homemade. Ingenuity displayed, electrical efficiency, transmitting range, receiving performance, ob servance of radio law. ability of the operator, amount of amateur traffic handled, and completeness of the station log. For several years Falconi's sta tion. 5ZA. has been the chief con necting link between the Mississippi Valley and the West Coast. He has had a splendid station located In a territory where amateurs are very rare, and so has been strategically located for the establishment of amateur records. His station has been heard in every State in the Union except Maine, by ships off the Atlantic Coast, and in the Pa cific. and he is consistently heard in the Hawaiian Islands. His station equipment not only includes a spark transmitter, but a continu ous wave transmitter. I. C. W. telegraph and a radiophone. The phone has been heard as far East as Indiana and almost every place inside that range. The equipment Is entirely home made. SUPER-REGENEF OF CIRCL ^ ? ' ? f ??? New Device May Supei When Made All owners of regenerative sets have noticed that when they turn i their dials too far loud howls are i prodJced. This is because the tube: starts to oscillate within itself. The new Armstrong 8uper-Regen*rattve system of which so much has been heard, owes its remarkable results to those oscillations, which it uses to increase the loudness of the sig nals while eliminat'ng the howling The system !s described in the Wireless Age. explaining that Arm strong takes advantage of regenera tion to the limit of a tube, and still prevents it from o cillating. He has discovered that he can stop oscillations in a negative resistance circuit either by introducing resi tance in the circuit at definite in tervals or by reducing the amotmt of regeneration, so that the circuit resistance becomes positive and negative alternately. In both csfos the effect is to give the circuit first a positive and then a negative re sistance. This alternation is suf ficient to prevent oscillations. Dur ing the negative resistance period we can majte full use of the very great amplification produced?but just as the circuit is about to start oscillating of its own accord, we introduce a positive resistance During the positive resistance period, the circuit, of course, cannot oscillate anu the resulting amplifi cation of the incoming signals is much less than before. Could Be Done Mrrhaaicaiiy This variation between positive and negative resistance may be made at any frequency .desired, provided that it is less than that of the incoming oscillations. No doubt it could be done mechanically by connecting a resistance in the tuned grid circuit, regenerating be yond the oscillation point, with the resistance short circuited, and then alternately short and open circuit ing the resistance at any desired frequency. Variation in regenera tion may be accomplished in a similar manner by mechanically varying the plate voltage of the regenerating tube, so that the grid circuit resistance is alternately positive and negative. Then again, we may use a combination of both methods But moving mechanical parts may be dispensed with and vacuum tub* oscillators employed to prodr.ce this variation in circuit resistance or amount of regeneration. These me thods ar#? illustrated in the diagrams Regeneration. Figure 1 shows how the amount of regeneration is varied by vary ing the plate voltage. Th#? first tube is the regenerator, which in troduces negative resistance in the grid circuit. Incoming signals are coupled to the grid circuit, ampli fied in the first tube and fed hack to the grid by means of the tick er coil. The tickler coupling is made large enough to carry the circuit beyond the oscillating point. Th** second tube acts as oscillator of any frequency desired. Generally, one of about 10.000 cycles is suit able. The amateur and experi menter will recognize the usual oscillating circuits. The coils and condensers should be so selected as to give this frequency (which cor responds to a wave length of about 30.000 meters). Note that the plate oscillatory circuit is also in the plate circuit of the first tube. The plate volt age of this regenerating tube is thus varied at a frequency of 10,000 cycles. When the oscillations are such as to make the plate more positive, regeneration is increased beyond the oscillating point, and the signal amplitude increases to a very great value. Opening Announcement Washington's Moderate Rate Store All Radio Supplies and Parts Complete sett, advice free of charge. Installation of apparatus. Let ns demonstrate our Complete Crystal Detector Set . $5 You are invited to listen in daily, 12,1 and 4 p.m. The Radio Shop 1321 G Street The Store With the Open Doers IATIVE EFFECT TT IS EXPLAINED sede Present Appliance Practicable. Just ?? The tube is ready to buret into oscillation* of the circuit fre quency. the applied frequency re duce* the plate voltage to a low value, and thu* reduce* f-egcnera tion and Introduce* a positive re sistance In the grid circuit?effec tually cutting off any *lgn of free oscillation. A very high degree of amplification 1* thu* obtained dur ing those half cycle* of the 10.000 cycle oscillation* when the plate Is made more positive. The grid circuit of the first tube Is coup ed to an aperiodic coil In the grid circuit of the last tube, which acts as a detector. Rectifi cation Is accomplished by applying a negative potential to the grid. In stead of the usual condenser and leak. But it is really Immaterial which method Is used. The first tube may be an amplifying tube. *uch as a UV-I01. But It is desir able to have power tubes. UV-202. for the oscillator and detector, be cause of the energy they are re quired to handle. Nevertheless. UV-201'* may be used throughout, galtahle Values. For the receiving circuits, the colls and condensers should be of values suitable for tuning to the wave length range desired. In the oscillatory circuit, the coils should be quite large?with an inductance of the order of 100 or 200 mll'lhen I rles. (Honeycomb or Duo Lateral I Colls No. 1250 or 1300. approxi mately.* Pie-shaped coils used In | spark transformers, having 1.500 to I 2.000 turns, are suitable ?ere. The j condensers are ordinary 43 plate I variable air condenser*. The system shown In figure 1 | should present no great difficulty I In operating or adjusting. The con I densers and coupling in the o*c-ll [ lator are adjusted until a very high pitched whl*tle Is obtained Then the receiving and regt-nera ! five circuits are tuned to the sta I tlon to be received In the usual i manner. In fact, the operation j should be much ea*!er than that of the average receiver. IN THE AIR TODAY. WASHINGTON. NAA?KAVAI. RADIO STATIO*. s.?.v> Meters, spark. 12 m. and 10 p. m.?Time signal. 10 p. m?Weather reports, ship orders, naval press news. ?KTEn? I'M.F** OTHERWI*K NOTKD. F.nstern Mondard Time. WDM?Church ?f the Ceiemat. ? hurrh Kervlees. kdka?riTT?Brnr;w. 10 a m?Services of the Point i Preere Presbyterian Church. Rev. H. P. Barker. 1:45 p. m.?Children* Bible story. ! ?Stumbling Blocks '' 2 p. m ?Radio Chapel, Rev. John ston Calhoun. ! Open air service*. KVW?CHICAGO. 3:30 p. m?Radio Chapel service. \\<;| MKDFIIHD-1IILLMDR. MASS. 7:45 p. m.?Police reports g p m ?Radio Chapel service. WSIl?ATLANTA, GA. 12 m?Church service*. fi to 7 p. m.?Radio Chapel. 9 to 10 p. m.?Service*. WJI?skwark. s. J. 2 p m.?Radio Chapel service* j by the Rev. John A. Carlisle, Forest Hill Presbyterian Church. 5:30 p. m?Readings and records from "The Bubble Books That Sing," bv Ralph Mayhew. 6 P- m?A special story for Boy I Scouts from "Tad Sheldon. Boy I Scout." bv John Fleming Wilson. 6-30 p in?"Is Honolulu t'p to i Date " bv Edith McDowell. 7:15 P m.?Concert by the Fair ! field Quartet. AMATEUR WRITES NEW RADIO BOOK A new radio book "Modern Radio Operation." has been carefully written to interest the average man who is i ju?t beginning to take notice of r*dlo. I while the more advanced chapters. to which the early chapters lead t in logical fashion, contain many de tails and data that the most ex perienced amateur* will find new, novel and exclusive. In the open ing pages. J. O. Smith, the author, gives h simple outline of the prin ciples upon which radio coramunica l tlon is based, and Includes Illus tration* and detail* of the princi pal broadcasting station*, with several of which he ha* been connected in an operating or advisory capacity. He then takes up the design nnd opera tion of vacuum tube receiving sets snd transmitters. There is a particu larly forceful and Impressive analy sis of the comparative merits of spark and continuous wave transmission. Illustrated with fact* drawn from Smith's long experience In working with other amateur* using all types of transmitters. I Broadcasting Programs, Dates and Wavelengths for This Week. LOCAL STATIONS DAILY EXCEPT SUNDAY. Eastern 8tamdard Tunc. NAA?NAVAL RADIO STATION. Meter*, C. W. (Arc). 845 to 9 a. m.?Live stock receipts, markets 10 a. m.?Weather forecast* for New England, Middle Atlantic and Southern States. 10:30 a. m.?Meteorological report. 11:15 to 11:30 a. m.?Hogs. Chicago and St. Louis. 11:20 to it 40 a. m?Fruit and vegetable shipments. 140 to 3:25 p. m.?Fruits and vegetables 3:25 to 3:55 p. m?Crops and special market news. 3'45 to 4 p. m.?Closing, live stock. 4.-00 to 4:15 p. m.?Hay and feed markets. Monday, Wednesday, Friday. 5 p. m.?Weather. 5:30 to 6 p. m.?Maiketgram. On Saturdays no schedule after 3:35 p. m. 3,650 Meters. Spark. (Sunday Also.) 13 m. and 10 p. m.?Time signal. 10:01 p. m.?Weather reports, ship orders, nival press news. WWX?POSTOFFICE DEPARTMENT STATION. All Radiophone 1,160 Meters. 20 a. m.?Weather report. 10:30 a. m.?Fruits and Vegetables Local wholesale. 13:30 and 3:15 p. m.?Livestock, Chicago and St. Louis. 3 p. m.?Crop and special market report. Press. 3:30 p. m.?General fruits and vegetables. Press. 5 p. m.?Dairy products. New York and Chicago. 5:30 p. m.?Grain report. 7:30 p. m.?Livestock. 8 p. m.?Fruits and vegetables. Press. 9:30 p m?Weather report On Saturdays, no schedule following the 12:30 p. m. livestock report. 360 METERS UNLESS OTHERWISE NOTED. WMU?Doubleday-Hill Electric WEAS?The Hecht Co. 7 p. m.?Music and features. i company. 4:30-5:30? Music. Baseball scores from The Herald. WJH?White and Boyer. 4 to 4:30 and 5:30 to 6 p. m.? Music and features. WEAS?The Hecht Co. I- 3 tc 4 p. m.?Music. Retail ., , . merchants reports. Newark; KYW?Chicago; WBZ? MONDAY?WPM?Thomaa J. Springfield; WGI?Medford, Mass; Tp'^ -Music. I WVP Fort Wood. N. Y.; WGY THURSDAY?WMU. 8 p. m.?Music. DISTANT STATIONS DAILY. KDKA ? Pittsburgh; WJZ ? P TUESDAY?WJH?Whits and Boyer.' 7:45 p. m.?Music. WEDNESDAY AND FRIDAY NOF. 8:30 p. m.?Music. 413 meters. ?Schenectady. N. Y.; WSB?At lanta. Ga. Also KQV?Doubleday Hill Electric Co, Pittsburgh, Pa, an Monday, Wednesday and Thurs day nights at 8:30 o'clock. WATCH HERALD DAILY SCHEDULE FOR PROGRAM. LISTENERS-IN COLUMN. Jn this column are published comments relative to local am? distant broadcast stations. Pre judiced or unfair criticisms are not desired and tcill not help the stadis of broadcasting in general. Inefficient construction or opera tion of receiving s^ts may account for distortion of music heard tn certain instances. August 10. To the Radio Editor: T have noted with interest the articles in The Herald on the sub ject of "listenins-in." Much has been sad about local broadcasting and interference, but little is offered in the way of suggestions for the elimination of this interference or its caus*. 1 do not mean to reflect on the In telligence of the radio enthusiast when I pay that in most cases so called interference could be elimi nated by proper manipulation of the receiving set. The proDer operation of a receiver to get maximum re sults in n<?t merely a simple "twist of the wrist." as most advertisers would have us believe Skilled op eration comes only with lime and painstaking *ffort. Most of the present sets, part'.cu larily crystal sets at a nomina: price, are single circuit outfits, and should not be expected to be selec tive These sets And a ready sate because of th ir simplicity of oper ation and cheapness. It is well to remember that selectivity and ease of operation do not go hand in liana If the "fan" desires ease of opera tion. he gets it with a sacrifice of selectivity and vice versa. The elim ination of interference m?ans cou pled ? rcuits with a resultant in crease of effort on the part of the operator to .^et satisfactory results. I have found that in most casen the persons who complain most about "amateur interference" are those who have cheap sets or have not be* n properly instructed in the operation of sets. which. with proper manipulation are very selec tive. It does not seem to be gen eral knowledge that practically all of our government and commercial stations using arc or tube transmit ters emit harmonics which are mul tiples of the fundamental or "true" frequency. For instance, the writer has ??n numerous occasions copied KDKA on* approximately 1*0 meters, although their "true" wave is 360 meters. Naturally with high power trans mitters located in and around Washington, it is possible to pick up harmonica of the fundamental wave lengths which in some cases are so powerful as to seriously In terfere with broadcast reception. The amateur is unjuatly blamed for this Interference, because the list ener is not familiar with the code, and the moment he hears dots and dashes transmitted he thinks that it is amateur transmission. Very little commercial and government radio traffic is handled at the pres ent time by radiophone. The greater proportion is radio teleTraph. In regard to the criticism of a recent writer on the fact that al WILLIAM A. EATON FACTORY REPRESENTATIVE FOR C. BRANDIES, Inc.?Head Sets. PACENT ELECTRIC CO.?Radio E??enti?l?. DUBILIER CONDENSER AND RADIO CORPORATION? Mica Transmitting and Receiving Condenser*. GENERAL RADIO CORPORATION?Variometer*; Vario Coupleri. "MUSIC MASTER"?Horna and Loud Speakers. ELECTROD CORPORATION OF AMERICA?Grid Leaks. BURGESS BATTERY CO?Batteries. 650 Munsey Bids* Main 5784 Washington, D. C i though NOF was supposed to be tuned to 412 meters, they inter ; fered with his reception on 160 ; meter*. Relatively. Anaostia Is a ' v?ry powerful transmitting station Heint: so close to Washington it is very difficult to work through them, not because of s lack of fcharunesB of tuning but simply be cause of their high power. En thusiasts in and around Newark . and Pittsburgh and the other high power commercial stations are i handicapped in the same way. A word for the amateur. He has done much dur ng the past few j years toward the progress of the radio art. He has co-operated ; ver* closely with the Department of Commerce and other government departments. It is admitted that I if it h^d not been for the amateur this country would have been seri : ously handicapped for proficient op erators to do their "bit*" during the world war At times there are ! amateur* who "jam the air." break j ing up concerts and official trans ! missions, but such actions are ! quickly outlawed by those of the i j fraternity who are really interested i in worth-while work. JProof of de ! liberate interference means cancel ! Nation of the license of the offend ing operator, and in some cases ! confiscation of his apparatus. I have noticed of late that sev eral new so-called radio clubs have ! sprung up They claim that they are established solely for the bet terment of the art. In most cases they seem to be established for commercial gain. The Washington Kadio Club is an institution which I is absolutely noncommercial. Its ! members are those who are inter ested in radio for the sake of the fascination of the game alone. The club has adopted tentative rules for handling of traffic, which if adhered to will go a long way toward the elimination of interference. Out siders are always welcome at the ; semimonthly meetings, which are : held at the American Association . of Engineers' Hall. Thirteenth '? street and New York avenue. 1 see no teal need for or poss ble good resulting from the establish ment of numerous radio clubs, each working against the other for its , own interests. Order out of chaos will only result from unified action and a "set-together" spirit JOSEPH H SCHMIDT. Assistant Radio Inspector. Naval Radio laboratory. Navy Yard. Washington. INVENTOR REVEALS MYSTERY OF TUBE An Interesting story Is associated with the much talked of super-re generative circuit Invented by Maj. E. H. Armstrong. It will be re called that a long period of litiga tion followed the announcement of Armstrong that he had invented a regenerative receiver, the forerun- | ner of the present super-regenera tive circuit. Lee De Forrest, inventor of the De Forrest vacuum tube, was cer tain that developments made by Armstrong originated with him (De Forrest). The court. however, ruled otherwise and gave to the younger radio expert the credit. It then developed that De Forrest, who had the essentials of the re generative system in his own hands, had not been able to fathom the possibilities of his invention. He conceived of more than he was able to demonstrate. It m*as here that Maj. Armstrong, after months , of exhaustive study and experimen tation. determined just how much the vacuum tube was capable of. j He found what De Forrest missed; ; he worked the vacuum tube to the ; limit of its possib^lties and j brought it to its present perfection. The newer super-regenerative ef- ? facts are but a continuation of tta's laborious and determined study into the secrets held bound till the advent of the inventor's touch. RADIO SETS BIILT TO ORDER We can take care of your Radio troubles. Our Service Dept. conducted by expert Radio mechanics. LARGE ASSORTMENT OF PARTS ON HAND Capitol Radio Sales Ageocy 724 lit* NtWrt Only Zaelsclvs Balis 0ter* BOOM IN RADIO IS LOOKED FOR IN FEW MONTHS Gteat Public Demand Ie Expected in Fall Market. Contlaued from Page models. and these improv#ra?u are no less adaptable Us their ra dio aet than newly dealgmed daeh board control meters to an auto mobile, nor will the expense of adding them be any mora excea aive. Great Adaptability. The adaptability of the radio aet is the strongest point in its favor. Wherever human beinrs are congre gated or iaoiated radio may be made to play an important part. So long as radio messages, whether prose or song, are tranamitted and so long aa the medium for that transmission is the limitless ether, man equipped with a radio receiv ing set cannot be deprived of re ceiving fall benefit thereof. Amund sen. now on his way to tha top most portions of the earth, will at tempt by radio to keep In conttn- - uous communication with countriea in both hemispheres. South 8ea Islanders have been photofraphed pop-eyed in wonder at the startling contrast afforded by the white man's gift of a radio aet and its strange noises as compared with the dull monotonous thud of their torn torn drums. During the recent strife in Ire Isnd the country, except for com munication maintained by v.ireles* transmission, was entirely iaoiated from the rest of the world because the commercial cables had been severed. Life prisoners barred from association with their fellow beings and hospital pstlents unabl* to seek their choice of entertain ment, are now permitted to 'listen- ? in" for their Instruction and amuse ment. Sick people confined are ~ comforted by radiophone concert* Such eources of amusement are enr joyed by ship passenger* hundreds . of miles at sea and by miner* ? leacues beneath the earth's rniif Radio In a comparatively brief ps- ' rlod. because of Its adaptability t* the uses of mankind largely through the development of the ra diophone. has passed from the lone investigator jn the experiment*! r laboratory to the crowd where ft 4g welcomed so fast as manufacturers of rsdio spparatua can protuce tha aets and parts needed for listen - lng-in. 4st?sskfl? Itaila Not leaat in all Its present.flay uses and one which hss led maru- * facturers to enter the field of spe cial design Is the installation of ra. 1 diophone sets in automobiles. The * use of radio in auto? in less prac ticed than It will be another sum- ? mer While en route, the recetvinc set as now constructed does not * lend itself to efficient operation un- .. der conditions of no?se and vibra tion consequent to aotomob'le .travel. But at noonday or night fall when the travel-weary tour let camps by the roadside for a . ; rlod. rsdio dispels a part of the day s fatigue. Nearly all o rc I ceiving sets are portable A brr?T? where one would naturally : pp?,is? the thirst serves ss an exceliert ground Tall trees selected for their shade and shelter provide am ple support for serial mire It Is ? only necessary then to unpack the radiophone set as one would unpack the thermos bottle and camp stool Writing to s New York daily re cently a writer who had expe rienced this auto radio, said. "We thought that you and your readers would be interested in o?r experiences here at Goodhue Lake | N Y. with radio. Mflea Prom R?w-fce?ier. _ ar* ?bout eighty mllea from Rochester on a camping trip. The | lak* is about a mile long and a \ I quarter of a mil* wide, entirely j surrounded by hoav|)y wooded mountains The forest extends clear to the waters edge We brought with us a type H. R receiver end HZ two-stage amplifier. W? had to erect our aerial between two trees, and the most we could ge' up was eighty-flve feet, snd this onlv aoout thirty-Are feet from the ground and entirely surrounded by treea. In some places not mora than a foot clearance. The wire is only about six feet from the roof ?f *ur ramp Tor a ground wa attached a wire to the top of a biscuit bo* And dropped it from the porch into the lake resting on tha bottom about a foot deep. "In short ft seems that we hare the worst possible conditions?jr ?> fort of trough in the earth. sur rounded by trees. "We h?ve been able te frt - line concerts her# from ench an Schenectady. Rochester. I Newark. Detroit and Indianapolis | but laat evMilnt. at 11 mUnljrh we received a (rlendld concert | from Atlanta, Oa.. broadcast by the i Atlanta Journal.** It may be readily Judged there , fore that no use to which man would be likely to subject the n? w | art wo0id overtax the possibilities of a radio set. ? It 1s not reasonable to suppose ( that a device ao readily adaptable to the services of every man wi:i I be less in demand thsn it is todav j Rather will the fall season witness | an unprecedented demand for rada ! and more radio. M. D. M RADIO WARNS OF FOREST FIRES Fire in the forests^ that guard the cultivated fields of the West ern States' Trees sre threatened and cataatrophe seems certain over a wide area of fertile farm ing land. Let these trees burn and the farms that now sunplv an im portant percentage of American foodstuffs would dry and harden into ansAtr Sahara An airplane patrol delects Are while still a small blaze. The ob server In the airplsne notes the smoke, spots its position on a map and by radio transmits. "Bushee afire In XYZ valley point about 143 north 72 west. The operator at ? the alrdrom* copies the message and hands it to a telephone operator, who quickly consults his map. finds the location of tl?e fire and telephones to the nearest forest ranger. The latter goes quickly t<? the spot, lummon ing s'd if necessary. Such is the procedure at the Hick River Air Station, typical of all the others This station was estab lished Isst year for the fire protec tion of the forests on the eastern slope of the Rocky Mountains, and radio playa an essential role la the work- a.