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SERVICE DEPARTMENT FOR READERS Please ;remember that Radio Age has one of the best radio instructors in the United States, who is ready to answer any technical question. This costs you nothing. In Which Vol. 2 RADIO AGE Proposes Your The Magazine of the Hour Health ITH this issue RADIO AGE Volume 2 JANUARY -FEBRUARY, 1923 Number 1 W enters upon its second year and volume and we take this CONTENTS occasion to say an appreciative Page word to those who have been How to Make a Sharp Tuning Crystal Detector.____..... 3 By FRANK D. PEARNE going along with us through the various interesting stages of Fees for Composers -None for Broadcasters____ 5 By FREDERICK SMITH development in the wireless field. Gen. Squier Sees a New Era 6 We started modestly, but with an abiding faith in the possi- Harbord's Views on Broadcasting 7 bility of making a middle -west- Description of Fixed Condensers Used with Simple Homemade Radio Receiving Sets 9 ern radio publication that would be sufficiently interesting Description of a Loading Coil Used with Simple and Radio Receiving Sets_ 12 helpful to find a field for itself. Here's That Lawsuit Against Grebe 14 Long before the end of our first year readers had been "Hooverising Radio " -Legislation Urgently Needed..__15 registering from every state in With the Radio Trade 16 the union, not to mention sub- Thought Waves from the Editorial Tower 17 scribers in such far -away places National Broadcasters' League 19 as Germany, Brazil, Holland Pick-Up Records by our Readers 21 and Hawaii. Questions and Answers 22 It is an old axiom in the Interference Causes Lawsuit 23 newspaper editorial office that Corrected List of U. S. Stations 26 -27 a good story is a good story the world over. The same holds 500,000 "Attend" Radio Wedding 32 true of a good publication. If it meets with favor among the RADIO AGE is published monthly by fans in the Mississippi Valley RADIO AGE, INC. it will find friends anywhere on the radio map where English Publication office, Mount Morris, Ill. is Editorial and Advertising Offices, Garrick Building, 64 W. read. Randolph St., Chicago. We have tried not only to present valuable and up -to -date FREDERICK SMITH, Editor FRANK D. PEARNE, Technical Editor technical information, written M. B. SMITH, Business Manager by authorities, but we have Mid -West Advertising Representatives: YOUNG & WARD sought to reflect in our pages 308 North Michigan Avenue, Chicago, Ill. a broad vision of radio in its Eastern Representative: GEO. W. STEARNS present social and economic Flatiron Building, New York City, N. Y. aspects and in its tremendous possibilities. Advertising Forms Close on 19th of the Month Preceding Date of Issue. Here are our thanks to the Issued monthly. Vol. 2, No. 1 Subscription price $2.50 a year. Entered as second-class matter September 15, 1922, at the post office at Mount reader- family and our most cor- illorris, Illinois, under the Act of March 3, 1879. dial wishes for the new year Copyright, 1923, by RADIO AGE, Inc. -THE EDITOR. JIIIIIII I!II I!Allllll II II I lll II!IIIIIIVIIIIIIIPII,IIIII IIIPIIII IIII I IIIIPIIIIIII IIIII IIIlillllllllnllllll,IIIII IIIIIIIII IIIIIII IIIIII,IIII OII IIIII I,II ll ll lll'.I III OIn1t IIII I In, Pll tllll llll lll' GI I III, II ll ll lll II!IPIII Illh llll l,ll llllli IIII!IIII IIIIIIIII IIIIIIIII IIIIIIIIIIIIII II IIIIIIIII IIII IIIII IIII IIIlilllllllllllll Illnplll lll ll lll llllllllllll llll llllllllllllll I

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B I ° ir How to Make a Sharp Tuning Crystal Detector (Here it is -the long distance crystal set) By F. D. PEARNE SINCE the atmospheric con- extent, but is this due so much up and thrown on the scrap heap? ditions have cleared up to to the inefficiency of the crystal It is usually taken for granted such an extent that carefully as it is to the tuning arrangements that any old type of a tuner is designed crystal sets are getting usually used in connection with all right for a crystal and as a rule distances never before dreamed of, them? the crystal set is furnished with the lowly little crystal is again It is very seldom that one sees a single circuit inductance which, beginning to attract attention. the finer type of tuning apparatus it is true, is capable of bringing Everybody wants to know about associated with the crystal. The in the 360 meter stations fairly that long distance crystal set, and Germans experience no difficulty well, but it will also respond to in this article we are going to in covering long distances with a wide range of wave lengths and show how this set is made and a crystal, but they use the same as a result, any stations having why it is called the long distance carefully made tuners in those waves from 200 to 600 will come crystal set. Some fans seem to sets as they do with the audion in on the 360 meter wave adjust- think that the crystal set is not type, so why not give the crystal ment, nearly as strong as the 360 as sensitive as the audion bulb, a chance, or at least an even break meter station, which makes it which may be true to a certain with the audion, before it is given practically impossible to hear any

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8.P -T PHONE CONDENSER

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GRCUNO 4 RADIO AGE -"THE MAGAZINE OF THE HOUR" selection entirely through without lower binding posts marked "D -1" Halt Radio frequent and noisy interruptions. and "T -1" as shown on the drawing. Tax An The proposed Chicago radio ordi- And another thing which makes extra variometer might then nance, which has been under considera- confusion particularly bad is the be added to make the set regenera- tion since last summer, struck another fact that often several stations tive. This of course should be static screen and was put over for broadcast at the same time, on placed in the plate circuit. To further consideration early in January. waves of the same length. A adjust the set, the coupling should The ordinance. drawn by the de- single circuit set is incapable of be set at maximum, that is, the partment of gas and electricity, was selecting any one of these waves windings of the rotor of the vario- designed to protect radio fans and the by itself, which must be done if coupler should be in a horizontal public generally from hazard to life clear reception is to be expected. position. The crystal should then and property by improperly constructed be adjusted and the variometer outside aerials, and provides a fee Figure "A" shows a crystal de- turned until the signals are heard, for inspection, which the radio user tector receiving set, so designed must pay. This fee ranges from $1.50 then the coupling is gradually re- to $3 per set. that sharp tuning is easily obtained. duced, that is, the rotor should The parts are easy to construct At a public hearing of the council be turned at a slight angle and committee protests against the ordinance and yet are rugged and durable. then the variometer is again ad- A series condenser of .0005 M. F. were plenty, the support coming only justed until the signals come in. from the representatives of the depart- capacity is provided, to permit This process of changing coup- length the ment of gas and electricity. Chairman two wave ranges, and an ling should be carried on until Adamowski gave everyone who wished extra binding post for the addition the tuning becomes very sharp an opportunity to talk and protests of an audion detector is also added. and the interference from other were voiced by Secretary John P. Tansey A vario- coupler is used for taking stations is entirely eliminated. of the Radio Club of Illinois, George advantage of the sharp tuning Foster of the Commonwealth Edison characteristics of a loose coupled The phone condenser shown in Company, Thorne Donnelley of station WDAP, F. D. Pearne and others. circuit, and a variometer and fixed the drawing is an ordinary fixed shunt condenser allow close regula- condenser, such as is usually sold "I do not think the city should tion on the secondary. take action in advance of the final report for this purpose. It should have of the government on its plan for regula- The variometer is used in place a capacity of .00025 M. F. The ting radio," said Mr. Foster. The of the variable condenser in order detector may be any of the stand- opposition was apparently so unanimous to employ a minimum of capacity ard crystals, but should be care- that a motion to file the ordinance and and a maximum of inductance fully tested to make sure that it forget was on the point of passing, when at all times. This gives a higher is the best that can be had for the Alderman Link asked: voltage on the detector. The cir- purpose. The binding posts are "Is there any one here that favors the cuit as shown can be either mounted conveniently arranged in the proper ordinance ?" on a table, or enclosed in a cabinet parts of the circuit to make the Messrs. Tousley and Nixon of Com- as desired. addition of any of the ordinary missioner Carlson's department de- audion circuits a comparatively clared that the electrical inspection No attempt has been made to easy matter. department has knowledge that load the circuit for 1450 meters, many aerials now constructed were hazards, and that it was but a ques- because the dead end effect would It will be plainly seen by looking defeat the efficient design for short tion of the first heavy sleet storm over this circuit that there is when they would come tumbling down wave work. If it is desired to no special reason for calling it upon high -powered electric light and receive waves of this length, a a long distance crystal set, other power wires with resultant short circuits special vario- coupler may be sup- than the fact that the apparatus which might mean fire or personal plied with a double pole, double used simply makes it possible to injury to many. throw switch, by means of which get much finer tuning, which is "Everybody who has protested is it may be thrown in or out of the interested in radio," said Mr. Tous- really the cause of the increased any circuit. While the construction range. The signals reach the crys- let. "Naturally they are against of crystal receiver shown is restriction, but the city department the tals in most cases, but are not to not difficult, it is intended more owes it to the rest of the public audible to the ear for the reason offer them the protection we know they for those radio fans who have the tuning mechanism in need." already experimented with single that most is not It was decided to lay the matter over circuit sets and are anxious to cases sufficiently sensitive to make the signals audible. until after the first of the year, and obtain something which will really meanwhile carry on a campaign of give continuous satisfaction and The circuit described in education of the public as to the real this protective purposes of the ordinance enjoyment. It is not essential article admits of such close - that the parts used be of the tuning [W. J. Clarke, , in Chicago Evening highest quality which can be pur- that it is possible to pick up stations A merican. chased, but if such high grade which can not be found on the material is used, the certain result ordinary crystal set. To get the will be a more efficient, more best results, the aerial should be International Aspects durable, and a better looking set. made of one single wire 150 feet in length, and as high as possible. H. Gordon Selfidge, Jr., Assistant For ordinary 360 Manager of the Merchandising Division meter work, This should the aerial is connected to the be placed in a position of the Great London Store, speaking binding post marked "A" 1, and which is as free from obstructions from WJZ, the Radio Corporation - the ground to the post marked as possible. The ground should Westinghouse Station at Newark, "A -2," which will include the con- also be of the best, and if these recently addressed the radio audiences conditions are followed out to the of England and America on the Inter- denser in the aerial circuit. An national Aspect of Radio Telephony. audion detector may also be used letter, the user will be surprised A cable was sent to the amateurs in with this set by connecting the at the results which can be ob- England notifying them of the time of audion input to the upper and tained rwith a set of this 'kind. the address. RADIO AGE -"THE MAGAZINE OF THE HOUR" 5 Fees for Composers None for Broadcasters By FREDERICK SMITH

If this were not a sob story it Company, the National Radio casters, who as yet have been would make you laugh. Broad- Chamber of Commerce and I. R. unable to obtain any compensation casters of radio programs have been Nelson & Co. from the public for their expensive entertaining the American public An impressive representation. E. service. Mr. White said: free of charge for a year, spending C. Mills, Chairman of the executive "Owing to the suddenness with thousands and hundreds of thou- board of the Music Publishers' which the art of broadcasting has sands of dollars, without a cent of Protective Association, made the sprung into existence the fact that return-and along come music com- naive suggestion that if the broad- as yet its activities are largely un- posers, song writers and authors casters paid for licenses issued by organized and that our government and ask for one million dollars per the A. S. C. P. they then would be has not yet legislated or regulated year in fees from the broadcasters. in the fortunate position of being the operation of stations, the Radio able to broadcast only A. S. C. P. Corporation of America does not see It happened in New York. Most compositions. The broadcasters its way clear to accept the sugges- everybody was there excepting a would not need to broadcast any- tions for compensation made by million or so "listeners -in" who thing else. the American Society of Authors, thought there was to be no alloy Composers and Publishers." in this joy of hearing songs and jazz Some of the broadcasters present at the conference declared they "The American Society of Com- tunes from their favorite broad- posers, Authors and Publishers has casting stations. They -the listen- would, in the most gentlemanly spirit, of course, see composers, in its hands the power, to a certain ers -had the fantastic idea that the extent to mould the future of broad- composer of a jazz tune should be casting," said M. P. Rice, speaking sufficiently repaid if the station for the General Electric Company. announcers told the world that his Radio Entertain- "If it is made too expensive, if it is "piece" was about to be played ment For 1lire by made too impracticable to utilize for an audience of 500,000 or more. the Evening popular music for broadcasting we Some advertisement of a bit of will turn to something else. If music, you might say. AWASHINGTON radio company has established a radio en- whatever we turn to is unsuccessful But the composers are a thrifty tertainment service for hire. The then broadcasting may die. concern proposes to supply radio we forced of music lot after all. It seems that they service on call, just as an orches- "If are out the are not the long -haired, temper - tra would sell its services for an field we will be forced into some mental scorners of money -wisdom evening. other field. And if the public puts that the popular novels and the This company undertakes to down its receiver, so to speak, and comic strips had portrayed. They send an agent to homes or halls walks out, then broadcasting is with a radio set which will be in- want their sixteen ounces of flesh, stalled and with which an eve- dead." according to the bond. If their ning's social entertainment may The fee mentioned by Mr. Mills demand should kill radio broad- be obtained or "no charge." was a minimum rate of $5 a day. casting, why let broadcasting After the concert, or whatever the die! program may be, the radio man If all broadcasters paid this fee to The composers, authors and pub- packs up his receiving set and the American society its annual lishers had heard that the radio goes on his way with his fee. revenue would exceed $1,000,000 Those broadcasting stations from source alone. Mr. Mills, goose was laying a lot of golden which conduct radio shops might that eggs (a pretty fable) and so they find this method a means of get- however, said that the $5 figure decided to go after the goose. ting some return on their invest- was "a point to talk up from or Therefore: ment. down to." "Send us a radio set and an op- The American Society of Com- erator. We want to dance." posers, Authors and Publishers Sounds interesting, doesn't it? Radio Exports Increase served notice on all broadcasters Domestic exports of radio apparatus that the broadcasters either must during the month of October totaled authors and publishers in the no- $207,535 and weighed 114,309 pounds, obtain license to broadcast copy- toriously bottomless pit before they righted face for viola- according to figures compiled by the stuff or suits would pay for giving the public the Department of Commerce. The value tion of the copyright law. biggest kick the public has had since of these radio shipments was as follows: A conference had been held, Mrs. O'Leary's cow kicked over England, $70,391; Quebec and Ontario, prior to this momentous decision, the well -known lantern. They said $35,728; Argentine, $32,092; Brazil, $27, at which were represented the they would go on the air with 072, and Japan $11,299, the balance American Society of Composers, "The Old Gray Mare, She Ain't going to twenty other countries. Authors and Publishers the Au- What She Used To Be" rather than thors League of America, the Music pay money to the A. S. C. P. for Show Postponed Publishers' Association, the Music the privilege of broadcasting the Postponement of the Second National Publishers' Protective Association latest copyrighted Broadway and Radio Exposition has been announced. and the Radio Inspector of New Forty-second street sensation, "My Milo E. Westbrooke, director of the York, the American Telephone and Bromo- Seltzer Bride." exposition says that information as to Telegraph the date of the show will be sent out Company, the Radio J. A. White, of the Radio Corpo- later. Corporation of America, the General ration of America, said that there The exposition was to have been held Electric Company, the Westing- was little possibility of adding at the First Regiment Armory, Chicago, house Electric and Manufacturing further to the burden of the broad- January 13 to 20, inclusive. 6 RADIO AGE-"THE MAGAZINE OF THE HOUR" Gen. Squier Sees a New Era WASHINGTON (Special to practical experiments undertaken tributed in the plane and controlled Radio Age). -Radio devel- recently. from the dash board by the pilot. opment advanced several Although handicapped by both Work on a radio telephone mule lengthy strides during the past a reduction of funds and personnel, pack for use in mountain artillery fiscal year through broadcasting, the division of the Signal Corps was also underway but uncompleted technical research and the applica- entrusted with communication, re- at the close of the fiscal year. Con- tion of advanced design to military search and development, completed siderable progress in the design communications, according to the 78 new specifications of radio sets and testing of a radio telephone set annual report of Maj. Gen. Geo. O. and apparatus, together with 300 for use in army tanks was accom- Squier, Chief Signal Officer of the drawings during the fiscal year. plished. The development and test Army. Among the accomplishments in ra- of a five station inter -phone set Through the operation of the dio engineering was the perfection for use in the Martin Bombers was Army Radio net, established in of a new radio telegraph set for also progressing well, it is reported May, numbering 60 stations on Infantry batallions for communi- by the Chief Signal Officer. November 30, the Signal Corps cating with regimental and corps Other developments included saved the Government $14,357 in headquarters. This set has a five - work on a field telephone repeater the transmission of official communi- mile radius and employs waves for use in coupling line and radio cations, over what they would between 75 and 77 meters, but is communication, especially in balloon have cost at commercial rates. capable of ten settings or different communication; the perfection of a These radio stations established in notes between its extreme waves. direction finder for the Coast Artil- corps areas in Continental United One of its advantages is a portable lery Corps, and tests with the reson- States and in their sub -divisions square loop about 9 feet, which can ance wave coil antenna for the handled a total of 40,494 messages be folded up. It also has directional el mination of static, revealed that in the seven months of operation, features. These sets are now in where large antenna cannot be cooperating with Naval coastal radio production for the Infantry Corps. erected, and on portable sets, this stations in some instances. Another set, designed especially apparatus may be of great advan- The Army radio stations at Nome, for division or corps headquarters, tage. St. Michael, Holy Cross and Idita- employs six 250 -watt tubes in trans- rod in Alaska. have been rehabili- mitting. This gives a telephone range of about 100 miles and a Boys Start Paper tated, and new and powerful sets We have on our desk the first two with a range of about 150 miles telegraph range of practically 600 in issues of "Radio Research," a neat have been installed at Nulato and miles. The set is portable that periodical published by the Radio Re- Wrangell. Signal Corps installers it can be mounted in tractors for search Club of the Springfield (Ill.) high were working at the Noorvik, Mc- field transportation. A tube set school and printed in the high school Grath, and Bethel stations, and was developed for use in permanent print shop. A. B. McCall, instructor equipment was en route to Fort stations with two 50 -watt tubes of mechanical drawing in the Springfield Egbert and Ruby, at the end of the operated from storage batteries for school and faculty advisor of the Radio both telegraph and telephone trans- Research Club, writes us that the paper fiscal year. Equipment for the has aroused great interest and after Craig station was also available, mission. The sending and receiving units are separate and the range is carefully looking it over we are not leaving only three stations in the surprised that the boys are enthusiastic territory awaiting new apparatus. about 150 miles. about it. For the Air Service two 100 -mile "The outstanding feature of the The paper contains technical articles, range telephone and telegraph sets a and answers department, year in signal communication un- questions were especially developed ; one for editorials and news notes. It is sup- doubtedly has been the phenomenal large airplanes like the Martin ported by advertising from local mer- development known as 'broadcast- Bombers and the other for use at chants. The staff is comprised of Roy ing' ", said General Squier. The ground or base stations. The S. Skaggs, editor; Edward E. Henry, suddenness of this development ground station apparatus uses two circulation manager; Charles F. Coch- he believes, has no parallel in the 250 -watt tubes in place of ten 50- ran, advertising manager. application of science to everyday watt Since end of the It is probably the first publication of tubes. the its kind in the country and we suggest to life. "In the educational field fiscal year contracts for the develop- alone," he "we on radio fans among the schools in other states, are the ment of both these designs have cities that they write to the circulation threshold of a new era which will been let to commercial electrical manager of Radio Research, Springfield probably affect our modes of life." companies for completion. The high school, Springfield, Ill., enclosing Pointing out the importance of perfection of a five -mile range set two cents for a sample copy. The circu- wireless communication in both for inter -plane communication em- lation manager says "send no stamps." peace and war, the Chief Signal ploying the Armstrong receiving For our part we welcome "Radio system and intended to be used Research" into the radio publication Officer explains that the Signal family. Corps is endeavoring to keep abreast on' pursuit planes in formation of all developments with a view of flying, has also been placed in the utilizing and assimilating them for hands of manufacturers, due to Radio for Insane Army purposes. The experiments lack of Signal Corps personnel. A new radio receiving set has recently conducted in his office broadcasting have been awarded been installed at the Government Hos- Contracts at Anacostia, D. C., over electric light lines for of pital for the Insane in an effort the production of a number by the Department of the Interior. The to reduce the interference in the new airplane radio sets with a set has a receiving range of about 750 ether, and with the "super -phono," 30 -mile range, using two 50 -watt miles and enables the inmates to receive a method of secret line -radio com- tubes. The apparatus is split up concerts every evening from many munication, are cited as examples of into several units which are dis- different sending stations. RADIO AGE-"THE MAGAZINE OF THE HOUR" 7 Harbord's Views on Broadcasting GENERAL James Guthrie Har- "2. Such an international corn - speedily brought together in the bord, Deputy Chief of Staff, munications system that America Radio Corporation of America, so United States Army, and would not be dependent upon for- that it might do its great work free President -Elect of the Radio Cor- eign -owned cables. from previously existing patent re- poration of America, spoke before "3. Providing for the construc- strictions essential to the immediate the Illinois Manufacturers' Associa- tion and operation of radio stations development of a Communication tion at Chicago, on December 14. at home and abroad under such system, all American in its owner- He discussed the interesting ques- terms and conditions as would best ship and control, but serving the tion as to who shall pay for broad- serve the needs of the American whole wide world. This culmina- casting and various other radio people and their Government. tion of negotiations bringing these problems. He said in part: "4. Preserving to America the great electrical concerns together "Since Gutenberg invented his wireless apparatus which had been has been instrumental for making rude movable type blocks and made invented and developed in this America the heart of not only the printing possible nearly five hundred country after many years of patient wireless systems of the world, but years ago, no one invention has more and costly research and experi- the chief of all the nations in the closely touched human interest and mentation. development of long distance wire- human welfare than your new busi- "Other countries, encouraged by less telegraph stations, ship -to -shore ness, the public's new business, my their practical control of the trans- wireless telegraph and telephone new business, RADIO. It is of one oceanic cabes, were already in the sets, to say nothing of that art sec- phase of that new business that I ond only to the printed page - shall endeavor to speak to you to- wireless telephone broadcasting. night, without pretense to expert "Broadcasting appeals to the im- knowledge or technical accuracy, agination as no other invention of or even in technical language. the times. Its possibilities are be- "I think any of you can under- yond human comprehension. It is stand with what keen regret a man the romance and the inspiration of leaves a profession to which he has the world's splendid prime. No been devoted from early manhood, permanent record of the last act of and which has been very dear to "Il Trovatore" as given by the him for over thirty -three years. Chicago Grand Opera Company in Yet there comes a time when a man your auditorium here, three weeks can see that his own particular work ago, Saturday night, and as actually has had the best that he could give heard in New York-no record it, and that his own and his em- though equally perfect in its repro- ployer's interests may be well served duction is equal or comparable to by attempting constructive effort hearing it by radio at the second it in another, but not unrelated line. was given. One is history, the "It was after much consideration other, action, timely and instantane- that I accepted the great responsi- ous. Think for a minute of the bility of the Presidency of the Radio psychological charm in hearing the Corporation of America, and de- voice of Galli- Curci, or the President cided to leave the active list of the of the United States, before it is Army. I believe that I can be of heard by the people sitting in the service not merely to the Corpora- last row of the Orchestra Circle, or tion but through it to the people of in the last row of the Gallery of the our country and to our Govern- Senate of the United States. Think ment, and perhaps contribute to of sitting in your own homes in guarantee the peace of the world by a MAJ. GEN. JAMES G. HARBORD, Springfield or Bloomington by helping to develop national and comfortable open fire, and being international facili- Newly Elected President of the Radio Cor- communication poration of America transported through this modern ties. wireless field, and the problem was miracle to the Yale Bowl in distant World Communication to establish America in international New Haven, and seeing in your "Certainly for peace or war no communications as soon as possible. mind's eye, play by play, the men action could have been wiser and The General Electric Company, from Iowa-our own great west - more far -sighted than that of certain quick to heed this SOS call made by defeat the sons of Yale. You are representatives of our Navy at the the Navy representatives, patrioti- told that the weather is perfect, the close of the World War, when with cally responded even though such Bowl is filling up; the teams come memory fresh from their experi- response involved a departure from on the field; you hear the bands; ences in that conflict, they appealed its traditional policy, and at once you are moved by the cheers of the to the General Electric Company broke off negotiations already under crowd; and when the station rings to form a single independent Wire- way by which the domination of air off, in the silence of your own home less Company for the purpose of es- communications would have passed you share the elation of victory and tablishing: into alien hands. The wireless sympathize perhaps with the bit- "1. An American owned, oper- patents, inventions, and research terness of defeat. ated and controlled radio communi- facilities of the General Electric, The Program cations company, powerful enough and American Telephone and Tele- "The successful program mana- to meet the competit on of the graph, and United Fruit, and the ger, in order to satisfy the public, radio interests of other countries. Westinghouse Companies were must be an interpreter of public 8 RADIO AGE-"THE MAGAZINE OF THE HOUR" taste and opinion-a musical critic ment and education, which are now fer from this interference, or stations -a spiritual adviser -a theatrical available in the cities, are regularly capable of serving many thousands manager -a statesman, and an ex- brought to the farmer by radio, will are asked to give up time on a specific pert on education, who seeks to it have fulfilled its mission to Ameri- wave length to a smaller station which satisfy your wishes. I am told by can Agriculture. What all this will can at best serve only small corn - my future associates that thousands mean to you, Gentlemen, who are munities and a limited number of of letters have been received Executives of companies manufac- people with inadequate programs. at the large stations, intended either turing all of the products consumed "It is popularly believed that for the management or for the artists by the average American, you are radio communications being carried who perform. These letters come better able to answer than am I. on through the air may be operated from bedridden individuals who But I am sure, that radio cannot to an unlimited extent. That, never dared hope to hear again their help but bring all sections of our unfortunately, is not true. The favorite concert artists. WAM country closer together and improve spaces that scientists call the ether, believed they were doomed to hum- its moral, social and economic through which communications may drum lives without ever again seeing standards. be carried on, are very limited. They the world outside of their sick- "Commercially successful wireless are like a definite number of paths, rooms. From blind men and women telegraphy is only two and one -half or a city street upon which only so and from children have come letters years old, but it is to -day handling many soldiers can march shoulder to with wonderful heart appeal, which twenty -five per cent of the inter- shoulder. The Government can compensates those who have de- national message business of the assign additional wave lengths, but voted their lives to the development United States. While successful there are not available in the ether of this art. broadcast wireless telephony is just 600 wave lengths which can be "Mothers, too, write in an en- a year old, or I might say a year allocated to telephone broadcasting. deavor to get the wireless telephone young, the progress made in that "Under existing international and to assist them in making their year is nothing short of a miracle. national laws and regulations, twelve naughty boys behave. The mother But it has only opened the door to instead of two wave lengths could of one Johnie Owen wrote a letter, the marvelous future, and if we be made available immediately for in which she said she hoped the are to make broadcasting of social this service, and if these were sending station would issue a per- economic, religious and educational allocated and properly staggered sonal message to Johnnie, whose value; a value close to the power of over the whole country, we could ears were glued to the radio re- the newspapers, of the history even then have only 46 first -class ceiver for the evening 'bedtime and of the literature of all time, broadcasting stations. But these story' -telling him to wash his broadly speaking, the problem, ex- 46 stations would operate with a face, brush his teeth, and in other cept for refinements, is no longer to minimum of cost as well as a mini- ways, be a good little boy. develop the art scientifically, but mum of interference which is more "About four weeks ago, one of to muster our forces for the purpose important if we are to realize imme- the large stations in New York of making radio of maximum serv- diately upon the possibilities of radio. started broadcasting the regular ice to all of the people of the country. "Our problem is therefore na- Sunday morning services from St. "There are in the United States, tional and not local. What is urgent Thomas' Church. In the course of in round numbers, six hundred is a national service which will the service, Dr. Stires announced broadcasting stations ranging in take into account the best utiliza- that the offering for that day would power from less than ten watts to tion of wave lengths so that the be used for the poor of the parish - more than one thousand watts. greater service will be rendered to and on the following Tuesday, Dr. The small stations of doubtful the greatest number. Stires received a letter postmarked technical perfection are serving pure- Pay for Broadcasting from a small up -state community. ly local needs with intermittent "Who is going to pay for broad- It said that the writer and his programs. The large stations- casting? I cannot answer that neighbors, there being no church in only thirty in number -technically question, but if we have a national their immediate neighborhood, had correct and operating on perman- service organized and administered, heard the services, and had noted ent schedules, are serving as large with the slogan, "The greatest good that the collection was for the poor group as is possible with programs to the greatest number," as the of the parish ; that they had taken of quality, varied to meet the de- watchword, it will no doubt be up a collection, and there was en- mands of the hundreds of thousands possible to devise some means of closed a check representing their in their unseen audiences. obtaining compensation for the cost contribution. Some of the Problems of service either from manufacturers Service Rendered "Today, we have newspapers, and distributors of apparatus, suit- "The value of broadcasting to automobile schools, electrical manu- able contribution from listeners, any individual or community will facturing companies and chiroprac- or by the public -spirited endowment be in proportion to the difficulty tic schools doing broadcasting. Can of a Carnegie or Rockefeller. of getting the same thing by any these various agencies continue when "Gentlemen, I have touched but other means. Next to saving life it costs from twenty -five to fifty lightly on the possibilities of broad- at sea, radio's greatest service should thousand dollars a year to put on casting- perhaps, even less on con- be to the agricultural sections of this continuously a generally satisfac- structive suggestion as to its pro- country. It will serve the fariner tory program? If not, who is to do blem. Think what the broadcasting and those who live in small com- the broadcasting? Theoretically, to hundreds of thousands of homes munities as no other utility has been the 600 stations scattered through- would have meant to Theodore able to serve him. It is already out this broad country are operat- Roosevelt with a recalcitrant Con- bringing him time signals, weather ing on two wave lengths, one of gress on his hands; or what possibili- reports, market reports and agri- 360 meters and the other 400 meters. ties it would have held for President cultural information. Not until The result is man -made interference Wilson in rallying public opinion to agricultural extension courses, re- and confusion. One of two things the support of the Great War, in ligious services, opera, entertain- happens, either good programs suf- confusion to pacifists and slackers. RADIO AGE-"THE MAGAZINE OF THE HOUR" 9 Description of Fixed Condensers Used With Simple Homemade Radio Receiving Sets* By the U. S. Bureau of Standards

THIS circular describes two "fixed" 3' condensers which are used with r 1 either of the radio receiving sets described in the first or second circulars of this series. One of the fixed condensers which is connected in series with the an- 2$ CAP BLOCK tenna, will be called in this circular the "series- antenna" condenser. The other J' fixed condenser, which is connected across the terminals of the telephone receivers, will be called the "telephone - shunt" condenser. The effect of the series -antenna con- denser is to enable the receiving equip- PARAEFlNED PAPER ment to give signals of somewhat greater intensity when tuned to wave frequencies above 1,000 kilocycles per second (that is, wave lengths of 300 meters or less). It will thus be seen that the effect of this condenser is just the opposite of the P. R FOIL effect obtained by a greater number of turns of wire on a tuning coil, which, it 3' will be remembered, permits the receiving equipment to respond to lower wave frequencies (longer wave lengths).

The effect of the telephone -shunt PARAFFIN ED PAPER condenser is to increase the intensity of some radio signals to which the receiving set may be tuned. In most cases, the use of this condenser has no effect upon the intensity of signals which are re- ceived from a radio telephone trans- CAPPER FOIL mitting station, but will increase the in- tensity of radio signals which are received from most spark transmitting stations. Series- Antenna Condenser. The series -antenna condenser is shown in detail in Figs. lA and 1B. Two thin strips of metal (C and E) 1 inch wide and 3 inches long are used with three sheets of insulating material (B. D, and F), 1 1 -2 inches wide by 3 inches long. The metal strips may be thin copper, brass or aluminum. Each of the three sheets of insulating material is made up of two pieces of heavy white writing paper which are separately dipped in of clear mica having about the same thick- xi,') are cut out and preferably from clean, melted paraffin. Each pair of ness as the two sheets of writing paper hard wood. Two screws pass through sheets is then pressed together by means mentioned above may also be used for holes, H and J, in the upper cap block of a warm iron, and when cold the strip the insulating material. Two blocks G, which is placed over the base block A, is cut out to the required size. A sheet (G = 2 5- 8'x3'x I,', A = 3'x3is' so that the edges of the two blocks are even on three sides. (See Fig. 1A). The holes for the screws, H and J, are 3 -8 inch from the sides of the cap block G and equally distant from the ends. Having located the correct position of the cap block G, the screws in holes H and J are loosened and the cap block is removed from A, leaving two small holes H' and J' to locate the proper position of the blocks when the condenser is finally assembled. The two screws L and M are located just far enough in from the front edge (See A, Figs. lA and 1B) so that the block A may be screwed to the left end of the baseboard of the receiving set described in Circular No. 120 or to the primary coil support de- scribed in Circular No. 121. (See Figs. 2 and 3). 10 RADIO AGE -"THE MAGAZINE OF THE HOUR"

The wooden blocks are of dry wood smoothed up with sandpaper and given a coat or two of varnish which will not absorb moisture, or treated with paraffin as described in Cirular No. 120. A sheet of the paraffined paper or mica B is placed on the base block A between the holes H' and J' so that its ends are even with ends of the base block. A thin metal strip C is placed in position so that it lies in the center of B and has its right end rz inch in from the edge of the base block and its left end projecting rs inch over the opposite edge of the base block. (See fig. 1B). Another sheet of paraffined paper D is placed on C directly above B. The second piece of thin metal E is placed on D'above C, except that one end of the metal strip E extends r, over the right edge of block A instead of the left as did ¡C. The third sheet of paraffined paper F is placed on E directly above D and B. The alternate sheets of paraffined

connected to this binding post. Another protective purposes when one forgets to wire is connected to the terminal of the throw the lightning switch to the ground- metal sheet C and led to the back of the ed side. Another method of protection binding -post P. would be to install a lightning arrester in In circular No. 120 a short stiff wire the antenna system. The arrester may be is shown attached to the antenna binding - installed just outside or just inside of the post and extending toward a similar building, preferably the former. This wire attached to the ground binding -post. serves as an extra precaution when one The wire on the antenna binding -post is forgets to throw the lightning switch to removed and a longer one substituted so the ground terminal when the receiving as to form parts, Q and S; fig. 2. A set is not being used. similar short piece of stiff copper wire T If the condenser is mounted on the is attached between the first and second receiving set described in Circular No. nuts of binding -post P. There is a very 121, it may be placed as shown in Fig. short gap between wires Q and T and 3. In other words, it is mounted upon the paper and thin metal are held carefully between S' and S. These gaps are for vertical board which supports the pri- in position, and the cap block G is placed over them and screwed in position. The right end of the thin metal strip E is bent down, and a round head brass screw N is passed through a hole K, or in punched drilled the end of the metal H strip. The projecting end of the strip C is not visible in Fig. IA, but it is bent and fastened in the same manner as E. The completed condenser resembles the G sketch shown in Fig. 1A. Mounting and Wiring. F The condenser is mounted on either the single- circuit receiving set described in circular No. 120 or the two- circuit receiving set described in Circular No. 121. Fig. 2 shows the method of mount- ing the condenser on the single- circuit r receiving set. The condenser is fastened to the end of the baseboard by means of the screws L and M. A binding -post P is added to the panel of the receiving set about 1 inch from the binding -post marked "antenna," as shown in Fig. 2. A wire is clamped under the condenser screw N which passes through the metal A strip E, forming one terminal of the con- denser. This wire is led to and con- nected to the back of the binding -post marked "antenna" without disturbing H F D G EC any of the other wires which are already FI G. 4 RADIO AGE--"THE MAGAZINE OF THE HOUR" l1

(A) about 1 3 -8 by 3 by 1 -8 inches, a similar base of pasteboard or wood (B) 1 3 -8 by 3 7 -8 by 1 -8 inches. 6 pieces of tin foil (C, D, E, F, G, H) 7 -8 by 7 inches, 7 pieces paraffined paper or mica (J. K, L, M, N, O, P) 1 1 -8 by 3 inches, 1 stiff paper clip or its equivalent (for temporary use), about 10 feet of No. 24 bare copper wire, and 2 round head wood screws about 1 -2 inch long. The several steps in the arrangement of these FIG..` parts are shown in Figs. 4, 5 and 6. mary coil tube previously described. The layers of paraffined paper and tinfoil The connections from the condenser to are alternated as shown, starting with a lowed until the seven paraffined papers the binding -post on the front panel of sheet of paraffined paper on the base B. and the six sheets of tin -foil are placed in the two- circuit set are made as described The paper J is placed in the center of B position. The cap piece A is then placed shown in Fig 4. above. so that there will be a 1 -8 inch margin at as If the connections to the receiving set the sides and 7 -16 inch margin at the The condenser now appears as shown in have been made as described in Circular ends of B. A sheet of tin -foil C is then Fig. 4, except that the thickness of the No. 120 or No. 121, the antenna lead -in placed on the paper J so that there will condenser is much exaggerated here in wire is removed from the binding-post be 1 -8 inch of margin of paper uncovered order to better show the parts. A paper marked "antenna" and connected to the on three sides. The tin -foil C will then clip or other form of temporary clamp new binding-post which has been added extend 4 1 -8 inches over the right -hand may be used to hold the parts firmly to the front panel of the receiving set edge of the paper J, or 3 3 -16 inches over together. The tin -foil strips, D, F and H, (See P, Figs. 2 and 3). The condenser the right -hand edge of the base B. The are now bent back over the end of the cap piece A and folded over at an angle of 45 (see line RS, Fig. 5) so that the tin -foil may be wrapped evenly around the pieces, A and B, and secured by several turns of No. 24 bare copper wire (see Fig. 6). The tin -foil strips, C, E, and G, Fig 4, are wrapped in the same manner. The completed condenser appears about as shown in Fig. 6, except much thinner. This telephone -shunt condenser just described may be added to the single - circuit receiving set described in Circular No. 120 or to the two -circuit receiving set described in Circular No. 121. The condenser is placed as shown in either Fig. 7 or Fig. 8. A somewhat simpler plan is to screw the condenser to the underside of the receiving set baseboard. This saves drilling more holes in the baseboard in order to keep the wiring on the underside. No matter with which receiving set this condenser is used, the two wires, T and D, (Figs. 7 and 8) are connected to the two telephones receiver binding -posts marked "Phones." is now included in the electrical circuit paraffined paper K is placed on C directly Fixed condensers may be purchased together with the tuning coil, between the above J. The tin -foil D is placed on K. which will give about the same results antenna - and ground. This connection The overhanging end of D extends to as those described in this circular. The to the building -post is used when it is the left instead of the right as did C. series- antenna condenser has a rated desired to receive wave frequencies of The other three sides of D are 1 -8 inch capacity of about 0.0003 inicrofarad approximately 1,000 kilocycles per second in from the three edges of K. This (300 micromicrofarads). The telephone - or above (wave lengths of 300 meters or arrangement of alternate layers is fol- (Continued on page 30.) below). To receive wave frequencies of 1,000 kilocycles per second or below (wave lengths of 300 meters or more) the antenna lead -in will ordinarily be connected to the binding -post marked "Antenna" and the operation of the receiving set is then as described in Circu- lar No. 120 or No. 121. In either case the set is tuned to the desired wave fre- quency in the same manner as described in Circulars No. 120 and No. 121. The switches are set so as to include more turns of wire on the tuning coil (or the primary coil of the two -circuit receiving set) with the antenna lead -in connected to P than when it is connected to the binding -post marked "antenna," when tuning to a given wave frequency.... Telephone -Shunt Condenser. The parts used in the construction of the telephone -shunt condenser are: a cap piece of heavy pasteboard or wood 12 RADIO AGE -"THE MAGAZINE OF THE HOUR" Description of a Loading Coil Used With Simple Radio Receiving Sets By the U. S. Bureau of Standards Introduction. lie closely and evenly together. When board end, each screw being provided THIS circular describes a loading 10 turns have been wound, a 10 inch tap with a washer. The two switch arms coil which is used in conjunction is taken off. After the given number of with the necessary contact bolts are with the single- circuit radio re- turns of wire have been wound on the placed in position on the panel. A wire ceiving set described in Bureau of Stand- tubes a hole is punched through the connection is made between switch arm ards Circular, No. 120. The experi- tube just underneath the last turn and, D and binding post H and between menter who is interested in using it in by using a small blunt tool or stick, a switch arm C and binding post I as connection with the two- circuit set 10 -inch loop of the wire is pushed through explained in Circular No. 120, or a spring described in Circular No. 121 is referred this hole. A second hole is punched washer is slipped over each switch -arm through the tube about one inch bolt the rear of panel wires to the section entitled, "Use with Two - -half at the and the Circuit Set," near end of this paper. farther along the circumference and the soldered to these. See Fig. 1C. The loop The purpose of the loading coil is to pushed through this hole to the out- several taps from the coil are cut off to a enable the receiving equipment to re- side of the tube again. The loop may or length sufficient to reach from the coil to spond to wave frequencies between may not be twisted as it emerges from the the contacts. The insulation is scraped 100 and 500 kilocycles per second (that second hole. See Fig. 1B. When 10 from the ends of the wires and the ends more is, wave lengths between 3,000 and 600 turns have been wound, another of the double taps twisted together below meters). In other words, the loading tap is taken off in the same manner. the point G, Fig 1A. The taps are coil increases the wave frequency (wave The arrangement of these taps is shown fastened between the nuts and washers length) range of the receiving set. The in the left half of Fig 1A. It will be notic- of the proper contact bolts as shown in receiving set described in Bureau of ed that there are 13 taps on the completed the left half of Fig. 1A. Standards Circular, No. 120, has a wave coil, counting the two ends of the wire This leading coil is used in connection frequency (wave length) range of be- at the start and finish. Each tap is with the receiving set described in Circu- tween 500 and 1,500 kilocycles per slightly offset from the preceding one lar No. 120. The method of making the second (wave lengths between 600 and so that the line of completed taps pro- connections is shown in Fig. 1A. A 200 meters). gresses about half way around the coil 10 -inch copper wire with a battery clip at The use of the loading coil will increase as indicated in Fig. 1A. After the wire is one end is fastened to the binding post the receiving distance of the equipment, wound on the cardboard tube or oat- H with the clip attached to the receiving because 'many stations using the lower meal box it is placed in a warm oven to set binding post marked "antenna." wave frequencies (longer wave lengths) drive off the absorbed moisture. After The wire originally leading from the back use a high -power radio transmitting set. the tube has dried for some time and of the antenna binding post was con- For example, the station, NAA, at while still warm, melted paraffin is brush- nected to the back of the switch arm Arlington, Va., uses a wave frequency ed over the tube, inside and out. The bolt V. The wire is removed iron_ the of about 113 kilocycles per second paraffined tube is put back in the oven back of the antenna binding post and (2,650 meters wave length) and uses for a few minutes in order to more thor- attached to a new bolt or binding post sufficient power to be heard a distance of oughly impregnate the tube. fastened to the baseboard of the simple about 200 miles when the loading coil The switch panel B is made from a receiving set. This bolt or binding post piece wood 7 inches is located receiving described in this circular is used with the of dry about long, just at the rear of the receiving equipment previously described. 4 1 -2 inches wide and 1 -2 inch thick. set binding post marked "ground." At night this distance may be consid- Its general construction is similar to the A 10 -inch piece of copper wire is attached erably increased. switch panels described in Circulars to this new bolt or binding post with a The cost of the parts for the loading Nos. 120 and 121. The two switch arms, battery clip attached at the end toward roil is approximately $3.00. C and D, which are used with this panel the loading coil binding-post I. The wire have also been described in Circular leading from the crystal to the rear of Description. No. 120. Having drilled the holes for the antenna binding post, as described in the two switcharm bolts, the switch Circular No. 120, remains as. it was. A loading coil is simply a coil of wire arms are placed in position and the If this wire was originally connected as connected to the rest of the receiving knobs rotated in such a manner that the described in Letter Circular, No. 43, or equipment in such a manner a vari- that ends of the contact arms describe arcs directly to the switch -arm bolt V, it is able number of its turns are included in antenna upon which the contact points are to be removed and connected to the rear of the the circuit between the and placed. The holes for the switch con- antenna binding post. All other wiring the ground connection. When longer tact bolts are then drilled; is as described in Circular No. 120. wave lengths (lower wave frequencies) the spacing between contacts depending upon the are received, more are used on Method of Operating. turns the width of the end of the switch arms, coil. as well as upon the kind of contacts which The wire leading to the antenna is The loading coil is shown at A in are used. For the switch arm C there connected to the binding post marked Figure 1A, and consists of 300 turns leading to are 11 contacts and for the switch arm "antenna" and the sire the (about 5 ounces) of No. 28 double- cotton- post D, 3, as shown. The wood base E is a ground is connected to the binding covered copper wire wound on a round In order to block of wood about 7 inches square and marked "ground" as before. cardboard box 5 3 -8 inches in diameter by at wave 3 -4 inch thick. receive messages transmitted about 8 inches long. An oatmeal box frequencies between 500 and 1,500 kilo- is used for the cardboard tube with the Assembly and Wiring. cycles per second (wave lengths between cardboard cover glued to one end. Cer- Before any of the parts are assembled 600 and 200 meters) the switch arms, tain of the turns are provided with taps the base and panel are treated with C and D, on the leading coil panel, are which are connected to switch contacts paraffin or they may be thoroughly both set on . the contacts marked O. so that the number of turns included in dried and coated with a good grade of When receiving at the shorter waves the circuit can be varied. One end of the varnish which will not absorb moisture. (200 to 600 meters), it is better to remove wire is fastened at the closed end of the Shellac is not used. The panel B is the battery clip from the antenna bind- tube by weavng it through two holes fastened to the base E and the coil A ing post and put the clip previously 1 -2 inch apart and 3 -4 inch from the end. is placed in position so that the row attached to I in its place; that is, attach The free end of the wire projects about of taps faces the rear of the panel. The the wire from the new binding post to the 10 inches. The wire is wound on the coil is fastened in this position by small antenna binding post. The loading coil tube in a single layer so that the turns wood screws passing through the card- (Continued on page 30.) RADIO AGE-"THE MAGAZINE OF THE HOUR" 13

Emu IIIIWYmpulu/t aim' RADIO AGE-"THE MAGAZINE OF THE HOUR" Here's That Lawsuit Against Grebe NE ERELY a reference in the Telephone and Telegraph company. of America. That left the Corpo- j December issue of this maga- The American Tel. and Tel. sold ration in sole possession of the zine to the suit brought by the the whole shooting match to the Mathes and Lowenstein patent Radio Corporation of America Radio Corporation as late as No- rights and the Corporation wants against the A. H. Grebe Company vember 9, 1922. This sale included the court to enjoin Bunnell and has brought correspondence from the right to sue for recovery of Grebe from making and vending far and near. When we went to damages, profits and savings. The apparatus which embodies or em- press on the last number we had Corporation's bill relates that there ployes these inventions. little information concerning the had previously been litigation over It is the contention of the Grebe suit and expressed a desire for more. these patents and that a certain company that the Radio Corpora- Various radio manufacturers and Elman B. Meyers, of California. tion contemplates a monopoly. dealers have forwarded us copies of had been whipped in a court skir- a pamphlet containing the text of mish and that one Jacob Hohen- Manufacturers Organ- the bill for injunction filed by the stein, of New York, also had per- Radio Corporation. The front cover mitted himself to get on the losing ize What is described as a tremendous of this pamphlet bears th. legend end of a temporary injunction "re- step forward in the clearing of patent "What Do YOU Think of This ?" straining the infringement of said entanglements and manufacturer's patent This pamphlet apparently has been claims." problems is the announcement today of widely distributed on the supposi- The most interesting section of the formation of an incorporated group, tion that the radio public will want the bill relates that Grebe and Bun- termed the "Independent Radio Manu- to get the details. nell have been making and selling facturers," with offices at 165 Broadway There is enough jaw- breaking "wireless receiving sets adapted, de- New York. legal phraseology in the Radio Cor- signed and intended for use in com- In an interview, Mr. Walter Russ, of bill bination Pennie, Davis, Marvin & Edmonds, poration's to put a Philadelphia with, and useful only in attorneys for the group, declared it to lawyer fast asleep. In every -day, combination with vacuum detector be his opinion that the incorporation of street -corner English the bill asks and amplifier tubes embodying and the Independent Radio Manufacturers, that the Grebe people be enjoined employing the inventions and im- Inc., marks thé first important step from making receiving sets which provements of said Letters Latent." forward in the clearing of the atmosphere are intended to be operated with a If the foregoing paragraph means surrounding the many patents and certain sort of detector and amplify- that the Radio Corporation will counter -patents clouding the radio hori- ing tubes of which the Radio Cor- try to maintain that a manufacturer zon today. poration claims to possess all exist- has no right to build and sell a re- "At the request of a number of im- portant radio manufacturing concerns," ing patents. ceiving set into which the purchaser said Mr. Russ, "The Independent Radio The Corporation also asks the is expected to screw tubes invented court to order the Grebe people to and improved by our aforesaid Old Manufacturers, Inc., was organized to turn over to the Corporation all of Friend DeForest and bought from join various radio interests into a com- the apparatus they have in stock, the corner radio shop, then the mon cause, for defense or offense in con- built in alleged infringement of the radio receiving set manufacturers nection with the radio patent situation. Stock is held in equal shares by all the bigger company's rights. As an sure are going to sit up and take members and the cause of one becomes alternative it is suggested that the notice of the result of the Corpo- the cause of all. court take possession of the receiv- ration's prayer. "Of course, any action by the group is ing sets, etc., to do with them as the The Radio Corporation files subject first to the approval of the board court may see fit. A third sugges- another bill of complaint of the of directors, and it is very likely," con- tion is that all this equipment be same character against the same de- tinued Mr. Russ," that in the event of mashed and smashed and splashed fendants, with the exception that patent dispute between members of the until it bears no resemblance to Fritz Lowenstein and not the said organization, such differences could in leased, DeForest, is named all probability, be arbitrated, or some anything that might be sold, as the original other friendly settlement arrived at. manufactured, supplied or installed patentee of devices now controlled "The advantages of concerted action by the Radio Corporation, proceed- by the Corporation. The bill says are not limited to the division of expense, ing under its alleged rights under that Fritz "being then a citizen of alone," stated Mr. Russ. "For example, the patents owned by the Corpora- the United States" was the inventor the radio engineering talent represented tion. of certain useful and new improve- by the various members of the Inde- The bill names J. H. Bunnell, ments in "Telephone- Relays" Fritz pendent Radio Manufacturers, Inc., is Inc., as co- defendant with A. H. sold his rights in this new and useful such that much more technical data on and Grebe & Co., Inc. The Bunnell improvement to the same Telephone the history of various inventions is avail- is a company, and Telegraph company took important anticipatory material concern distributing that able, to the group in a manner which it is set forth. The bill relates that over our Old Friend DeForest's would be possible in no other way. This our old friend, Lee DeForest, in devices. information may at any time prove 1916 applied for patent rights on The bill then relates that Robert invaluable to some one member in "Devices for Amplifying Feeble C. Mathes became in 1916 the in- need." Electric Currents" and that in 1907 ventor of a "Circuit for Electron - When inquiry was made in regard to our old radio friend Lee came right Discharge Devices" which he soon new members joining the group, Mr. back with application for patent sold to the Western Electric Com- Russ stated that many new names have rights on certain new and useful pany. The Western Electric Com- been submitted to membership accepted sold rights and will, in all probability, be acted upon improvements in "Space Teleg- pany then the patent to in the near future. Many manufacturers raphy." Letters of patent were is- the several times aforesaid Ameri- of radio apparatus, learning of the real sued to Brother DeForest in due can Telegraph and Telephone com- advantages to the entire industry offered time. Along in 1917 said DeForest pany and the Tel. and Tel. then sold by the Independent Radio Manufacturers sold the patents to the American the stuff to the Radio Corporation are desirous of joining. RADIO AGE -"THE MAGAZINE OF THE HOUR" 15 "Hooverising Radio " -- Legislation Urgently Needed By CARL H. BUTMAN

THE extension of the regulatory both Government and private would secure the aid of the present powers of the Department of broadcasters, which would give such Interdepartmental Radio Commit- Commerce over radio is imperative. transmitting stations broader scope tee, or at least six of these technical Secretary Hoover, who has become and prevent interference to a great experts as the Governmental repre- a sort of foster -father to radio, degree. Today only two public sentatives on his new committee. states in his annual _report. Other- broadcasting waves are available, Another feature planned if new wise the evelopment of radio art 360 and 400 meters, while the Gov- legislation is secured is to make the will be greatly retarded, he explains. ernment wave is 485, confining a wave band between 600 and 1,600 The sudden increase of radio tele- meters, now assigned -for Govern- phone broadcasting during the last mental use, available to commercial seven months of the fiscal year from Button -Button and public stations. Details such 5 to 382 transmitting stations, and Who's Got the as these, however, it is hoped will the increase from about 200,000 to be left to the discretion of the Sec- 1,500,000 receiving stations, re- Button? retary. The art of radio is develop- "interference" THE old game of "Button, But- so sulted in so much ton, Who's Got the Button ?" ing rapidly as to demand con- between sending stations the Secre- has just been applied to radio stant changes and the permanent or tary of Commerce reports, that the broadcasting, and when the specific designation of every wave destruction of the usefulness of this younger radio "fry," meet they or band of waves by law would be a invention was ask each other how many radio hindrance. very important buttons they have, the one with threatened. the greater number being the win- Interference is actually far worse A conference of experts, manu- ner. Several stations now have today than it was five months ago, facturers, and government, public individual buttons and many have when Mr. Hoover's report closed at their orders on file. the end of the fiscal year. Instead and amateur representatives, which W. Dandridge Terrell, Jr., four- was called by Mr. Hoover in Feb- teen year old son of the Chief of there being 382 broadcasting ruary, unanimously recommended Radio Inspector, of the Depart- stations on 360 and 400 meters, the immediate extension of the regu- ment of Commerce, is the "in- there were actually 565 such stations ventor" and owner of the new in operation on December 1, or 179 latory powers of the Government radio button scheme. He is sup- and drafted a set of technical pro- plying broadcasting stations with more than existed on June 30. Dur- visions for submission to Congress. identifying buttons of different ing the fiscal year seven commercial Identical radio bills were intro- colors bearing their name, call trans -atlantic stations were placed and sometimes their slogan. Dis- in operation, providing for better duced in the two houses of Congress tribution of the buttons is made last session by Senator Kellogg and by the stations to listeners -in who communication with Great Britain, Rep. White, but they are apparently report having received their broad- France, Italy, Japan, Norway, Po- "pigeon- holed," awaiting, perhaps, casts. land and Germany. Another com- Many fans are already pridefully mercial station opened for business the demand of the radio public it- displaying the buttons of their self before any action will be taken. favorite stations on their coat with Central America and plans for Department of Commerce officials lapels or on banners hung on the circuits to South America and China handling radio matters have cher- wall over their receiving sets. were also underway. In the fiscal Those possessing the most but- year ending June 30, 1922, commer- ished the hope that early action tons are local champions. As new would be forthcoming for some time broadcasters adopt buttons, the cial land stations, excluding broad - and continued to license all broad- scope of the game increases and casters, increased from 161 to 345. casters every three months, while there are more buttons added to Amateur station licenses increased the pennants of the receiving sta- from 10,809 to 15,504 between June awaiting a definite law. New legis- tions. A prize pennant is planned lation would aid the Secretary of for the receiver securing the most 30, 1921, and June 30, 1922. In the Commerce in enforcing the laws and buttons in a given time. past five months, however, 1,304 bring about a more satisfactory con- The young inventor who is a more stations have been licensed pupil in the Force School in bringing the total amateur sending dition for both operators and "fans," Washington, is believed to have they point out. Authority for the started something new in the way stations to 16,888 on December 1.- appointment of the advisory com- of advertising and both broadcast- The increase in amateur interest mittee of six Governmental and six ing stations and fans are enthusi- by 5,999 is gratifying to the of- astic over the plan. Among the ficials of the Government, for outside civilian members, would as- first stations to adopt buttons sist the Secretary in reassigning were "WSB," the Atlanta Journal, they say, these young men con- definite wave lengths and in the and "WFAA" The Dallas News. stitute a reserve of trained oper- allotment of more bands for com- ators, some of whom have al- ready contributed to radio art. mercial and private uses. Con- very large amount of matter broad- gressman White's bill is expected to During the war many amateurs were cast by many stations to only three found to be superior to the average be pushed but action is not assured w ths, and necessitating time this session. commercial operator in resource- scilesInles and silent periods. The fulness and technical knowledge. Recommendations of the Radio assignment of wávés under these The necessity of an international Conference were for one exclusive recommendations, as well as other conference on radio communication Governmental broadcasting wave technical problems, would devolve for the adjustment of international band, two bands for private and toll upon the advisory committee. It broadcasting, and four for use by is very likely that Secretary Hoover (Continued on page 28.) 16 RADIO AGE -"THE MAGAZINE OF THE HOUR" With the Radio Trade It was March 14, 1922, before a piece of K. I. McCahill, president, Pittsburgh Courts Sustain Injunc- wireless apparatus was trade marked Harmony, Butler and New Castle Rail- tion with "Radio," although before then it road. \V. M. Furey, president, The Appellate Division of the Supreme had been combined with other words to Pittsburgh Chamber of Commerce, could Court of the State of New York has designate many things. Silk, pens, be heard and, at the same time, by recently confirmed the lower court's tonics, a magazine, and tea had been reason of their speaking from a glass decision granting an injunction to the branded with the mystic letters. Both booth in the hall, the speakers could be Freed -Eisemann Radio Corporation in "radiofone" and "radiophone" were used seen by all attending the show. The their suit against the Wireless Specialty in 1920, and 1922 came "super- Radio" words of these men were transmitted to Apparatus Co. The injunction was and "Radio Rex." the Westinghouse Radio Station, KDKA, sought to prevent the Wireless Specialty Many articles bear the name which at East Pittsburgh from where they Apparatus Company from advertising seem not to be trade marked, among them were broadcast. A wedding was held and circularizing certain statements made the recently advertised "Radio Boot," in this booth and that night over 5,000 in regard to radio patents. "on and off in a flash," and radio over- persons were turned away from the This decision has a very important coat, with weather resisting qualities has door. bearing, and is the first step in the solu- also appeared. The other day the name tion of a great many patent tangles was assigned to a ship, which curiously resulting from the sudden growth of this carries no wireless apparatus. In the Lighthouse Keepers' latest "infant" industry. field of sport the name has been appended Interesting developments are how to a race horse and "wireless," another Club expected as a result of this decision, horse is also pretty well known. Appar- Several men in the Lighthouse Bureau in connection with the claim of Freed ently "Radio" is a popular name, taken at Washington have been dabbling with Eisemann Radio Corporation for $150,- by and large, for use in any field, but radiotelephone receiving sets, and it 000 damages, alleged to have been there are those who would like to see has occurred to them that their experi- suffered by them as a result of the to see it confined to matters connected, ence would be valuable to keepers and patent warning advertisements inserted at least, with the art. other members of the service who would in various papers, and in restraint of like to enjoy the pleasures of the radio which the injunction was granted. concerts. Therefore, they propose to organize a radio club among the amateur Pittsburgh's Show "fans" of the service. The initiation fee A sparkling, scintillating electric foun- will be a postal or letter stating approval Let's Name It "Radio!" tain, a complete electric home, a wedding of the scheme and a desir to be enrolled With nearly every new development by radio, and the hall jammed with as a member. The dues will be a word of great popular interest there comes an thousands of people, other thousands or two from time to time telling of era of using the new name for practically being turned away at the door, all con- difficulties encountered, results secured, anything -and so a literal flood of tributed to making the recent electrical or asking information. articles have been christened "Radio." exposition, held under the auspices of the A space in the Lighthouse Service Some objects are aptly named, but many Electric League of Pittsburgh, a com- Bulletin will be reserved for answers to of them have nothing to do with the art plete success. It was stated by electrical questions and interesting information or practice of wireless telegraphy or men that this show was one of the best as will enable them to construct their telephony. ever attempted in the United States. own sets or improve those they already Twenty -four articles use the single During the week that it was held, the have and to conduct a clearing house word "Radio" as a trade mark, according main topic of conversation in Pittsburgh for new ideas. Articles will appear from to the Patent Office records, and more and vicinity was the electric show and time to time on different phases of the applications are on file. The first use everyone, not seeing it, was made to subject. Charles C. Brush is in charge appears to have been in connection with feel that a great deal was missed. >IAII of the plan. a chemical compound registered by The indescribably beautiful electrical John B. Daniels on August 23, 1904, fountain, designed by W. D'Arcy Ryan, about six years before the Navy adapted was one of the world's most dazzling Government List the word to wireless telegraphy. lighting effects. Myriads of multi- Ready In 1911 the word "Radio" was regis- colored spectra flashed about the hall, "Amateur Radio Stations of the tered as a trade mark for a make of hot - the central water spout shot up with a of 1922," air fans and also a brand of varnish and rush, and the 20,000 jewels flashed, United States, edition June 30, paint. The type and design of the glittered and sparkled from the central is ready for distribution according to letters in the word of course were differ- beams of sixteen powerful searchlights the Department of Commerce. Applica- ent, and sometimes the background and a multitude of smaller lights. tions should be made to the Superintend- of Print- varied. In 1913 and 1914, "Radio" was The S40,000 house, completely erected ent Documents, Government employed to designate certain forms of in ing Office, the price is twenty -five cents. ten days, with real grass growing in and chemicals, medicines, insecticides, leather, an iron -fenced lawn outside, was some- The publication contains 300 pages records 15,504 amateurs licensed up to threads and yarns, and furniture polish. thing that is not ordinarily seen indoors. 30, 1922, calls, address What was probably the first registera- The house of five rooms, a June their and consisted power with special licenses tion of this trade word for an electrical bath and a reception hall, perfectly together each issued schools and experi- contrivance was taken out for electrical equipped, with all the latest in furnishings to training batteries and apparatus early in 1915. and every conceivable electrical ap- menters. A little later came a type of "Radio" pliance. The house was broken in two ball : bearing, and in 1918 the "Radio" so that the crowds could walk between it golf ball was trade marked. A non - and so havean unobstructed view into 6,500 Mile Record intoxicating beverage took on the name the rooms. f An unusual combination of atmos- in 1918, and in the next two years it was Radiophone loud speakers were sta- pheric conditions is believed to have used to designate certain flower and tioned at strategic points about the hall made possible a radio feat recently garden seeds, auto lenses, phonographs, and the address of A. W. Thompson, reported. According to the report the tires, and a brand of canned fish. The president, Philadelphia Company; E. M. wireless station at Eastevan, 150 miles past two years saw "Radio" applied to Herr, president, Wstinghouse Electric southwest of Victoria, B. C., on Sept. watch charms, writing paper, skirt & Manufacturing Company; A. M. Lynn, 21 spoke to an operator at Raratonga, braid, playing cards, cigarettes and dyes. president, \Vest Penn Power Company; N. Z., 6,500 miles away. RADIO AGE -"THE MAGAZINE OF THE HOUR" li

7¿ .: YA i ;R. stS_"'ñ?i4i.. THOUGHT WAVES F ITORIAL TOWER

sHALL broadcasting be con- appeal, in its possibilities for good, trolled by the few? It is a in its power to reach the masses to question exactly as big as pass from the possessive control radio. There is sufficient evidence of the American people. that the Westinghouse Electric and Company, associat- Manufacturing to find its ed with the Radio Corporation of RADIO is beginning America, would like to eliminate place in crime detection and all broadcasting stations not owned tracing of fugitives. It was obvious or controlled by the Westinghouse from the start of broadcasting that of General the use of wireless could not fail to interests. The argument of cities James G. Harbord, published else- be of benefit to the police where in this issue, is that if wave and law enforcers generally. lengths and locations of stations A striking example of the use of were allocated there would radio in this way is presented by properly for robbers who got be room for only forty -six big the search the in the United away with $200,000 from a federal broadcasting stations front of States. It is General Harbord's reserve truck in Denver in the number the United States mint. Serial view that by decreasing notes stolen of stations from about six hundred Owing to mechanical difficulties it numbers of the bank is necessary to combine the Janu- were at once broadcast by Denver to forty -six stations, interference ary and February issues of Radio be eliminated, programs stations and the whole country would Age in this issue. Schedules in both apprised of the de- of more excellent quality the subscription and advertising de- was instantly would be of the and "the greatest good to the great- partments will be adjusted accord- scription of the loot and ingly so that subscribers or adver- robbers. est number" would be accomplished. receive full value on all been expressed tisers shall With a million and half persons Similar views have contracts. con- of the Westinghouse listening in it is difficult to by officers way of Company, notably by Mr. Davis. ceive of a more effective hampering a criminal's flight and But in the motive of the Radio the same American freedom as has making it difficult for him to dis- Big Four (General Electric Com- the daily newspaper? pose of his plunder. When the final pany, United Fruit Company, West- It is argued that independent Denver robbery support- chapter of this inghouse Companies and the Amer- broadcasters cannot go on is written we predict that it will be ican Telegraph and Telephone Com- ing stations at an expense of from found that crystal detectors or pany) altogether altruistic? Is there $25,000 to $50,000 a year. Many of vacuum tubes had a good deal to a perfectly natural hope in the them are in a position to do so and do with the solution of it. heart that, with broadcasting under as long as they are willing to pay the their control, these giant corpora- fiddler who has the right to stop vastly increase the sale their dance? FRANK D. PEARNE, technical tions could Age, has re- of their Radio Corporation appa- We would like to see broadcasting editor of Radio ratus? conducted on a free -for -all enthus- ceived the following letter which is iastically competitive basis, of course published in the belief that some Secretary Hoover, of the Depart- with reasonable government re- reader may want to lend a radio ment of Commerce, is among those strictions as to interference, and as hand to the convicts at the state who predict that owners of receiving to character of broadcast programs. penitentiary at Joliet, Ill.: sets in the United States will soon Our broadcasting is all right; "My dear Mr. Pearne: number millions. Do our radio our broadcasters are all right. The "Noticing your articles from time citizens want the vast influence, radio fans will testify to it. What to time on "Radio," I have intended soon to be exerted on our social and radio needs now is some action in to write you with reference to getting economic life by radio communica- Washington to end the present im- information, etc., as to a receiving tion, controlled by a group of cor- possible wave -length overlapping, set. I am therefore taking that porations? thereby giving broadcasters and liberty now. Is not radio broadcasting, with fans the use of the air -to which "I have been on the State Honor its direct contact with all the people, they are entitled. Farm for over two years now, and best left in the control of individual And if radio communication is that occasions this letter. There companies, of various political, sec- to be monopolized let us at least are on the average, one hundred tional and business perferments? make it a government monopoly. and twenty -five men here. We Is not radio broadcasting to have Wireless is too universal in its are two and a half miles west of 18 RADIO AGE -"THE MAGAZINE OF THE HOUR" Lockport and about forty miles Broadcaster very best programs, ever striving to im- from Chicago. Being short on Saves prove the quality of its service to the entertainment, if there is any way $56,000 public. It is obvious that the elimination we can install the equipment for a NE broadcasting station has been of this one overhead expense and concen- receiving set so that we could have issuing for some months its weekly tration of our savings and efforts upon the the benefit of the fine concerts, 0 program to 30,000 "listeners -in." quality of our broadcast programs can lectures, as well as many other This has been mailed at great expense. only result in the improvement of that things coming over The station hasdecided not to continue this product. the air, it would "Your correspondence is solicited, be a method and we publish a letter the great boon to us. station issued now as before. Your criticisms, sugges- "I would like interested a month ago, eliminating to get you the name of the station for the reason tions, and advice have helped us mater- for it is a worthy cause, so to speak - that we have not received permission ially in placing our station acehigh among and to have you give us advice, and to use it. The letter comes to us from a the broadcasting stations of the country. if agreeable, lend your aid, so we fan who says the decision is "somewhat We need your further cooperation to could get the proper equipment of a calamity," as having the program further improve our service. at as low a price as possible. at hand assists in identifying the station. Very sincerely yours, "Under the present administra- The broadcaster's letter follows: "P. S. -The program enclosed here- "Dear Friend: with will be the last copy issued to indi- tion of affairs here, with Acting vidual listeners." Warden John L. Whitman in charge, "This station has been vitally inter- ested in the constructive everything possible is being done side of radio transmitting. With this issue before us Organ Recitals to have the men realize that they we are going to change one thing to better Through the courtesy of the Estey are men, and that they are expected develop the other. Organ Company, the Radio Corporation - to go out and prove it by making "We have been publishing a weekly \Vestinghouse station, WJZ, Newark, good. It is easy to see therefore, program; our mailing list on this program N. J., has arranged to broadcast organ what great good a radio set would has now passed the thirty thousand mark. recitals at least twice a week during the do here. We estimate that if continued, it would coming winter. cost us fifty -six thousand dollars per year The organ, because of its extreme "We have a dining hall, about purity of tone and great versatility, has 16x50, where the apparatus could to print, addressograph, and mail this program. This overhead expense in no always been the most popular of musical be placed so the concerts, etc. manner improves instruments, and the radio audience has could be have the character or quality heard. We electricity, of our broadcast program, which is really voiced its approval of the recitals now power furnished by the Sanitary 'the constructive side of radio trans- being broadcasted by several of the District. Just what information mitting.' larger stations. Unfortunately, how- ever, the average organ is not well adapt- you would want before giving us "You do not listen in on the printed suggestions, as to what we would ed for radio purposes. For both leaflet. It merely gives you the names structural and artistic reasons, it is need, I do not know, but if you will of persons, selections, hours of broad- installed in several different sections; give us an idea as to about what casting, etc. We believe there is a better and though the player can produce would be necessary, its probable way, at a very great saving to us, allow- beautiful effects for his immediate cost, etc., I will be grateful." ing us to put this saving into better radio audience by the appropriate use of these transmitting, which is again 'the construc- different sections, the variation in the tive side of radio transmitting.' volume of sound is too extreme to be Bank Operates Giant "The station issues a weekly newspaper entirely satisfactory to the radio advance program sheet which is mailed audience. Radio the newspapers free. If your newspaper The engineers of WJZ studied all of The most powerful radio broadcasting prints this daily or weekly, you get the the available organs with this fact in station on the Pacific Coast -and one names, numbers and hours just as well as view and were delighted to find in the of the most powerful in the United States though we sent it to you individually. great Estey organ, installed in the -is now "on the air" in regular service A one -cent stamp takes it to the news- general offices of the company at 11 West on "Telegraph Hill," San Francisco. paper; the newspaper passes it on to 49th Street, New York City, one that The station - officially known as thousands of listeners at no further ex- was not only of the highest musical KFDB -was established by the Mercan- pense to anyone, whereas it now costs excellence but that also seemed especially tile Trust Company of California, and four cents each week to reach each person designed for radio purposes. In this is the first in the West to be built, owned in the thirty thousand. In order to get organ, the sound chambers are so and operated by a bank. 'the constructive side of radio trans- arranged that all of the tone emerges KFDB has a sufficient range tò reach mitting' to all the listeners in your terri- from a single point, regardless of which all points west of the Rocky Mountains. tory, we ask that you make it your in- banks of pipes are being played. This It is broadcasting every day (Sunday dividual duty to cooperate with us on greatly simplifies the transmitting prob- excepted) commercial, financial and agri- this change, thus saving us a tremendous lem and permits every sound intensity cultural information between the hours expense and accomplishing the same end to be caught at its true relative value by of 10 and 11 a. m., 2 to 3 p. m., with a in another way. It will be put to you the microphone. musical program between 9 and 10 p. m. to see that your newspaper is placed on An unusual feature broadcast by The first attempt at broadcasting from our newspaper program mailing list. WJAX, the radio station of the Union the KFDB station -made in August - It will also be up to you to see that this Trust Company, Cleveland, was the developed an interesting problem in program is being published daily or organ recital by Edwin Arthur Kraft, radio engineering. The power was weekly for the benefit of yourself and at the new Cleveland Public Auditorium supplied direct from a 2,000 volt genera- everyone interested, in your territory. on Tuesday evening, November 28. tor, but the commutator hum of the The amount of public demand for this This program was of especial interest generator prevented satisfactory radio service will determine your newspaper's to radio fans because of the unusual reception. willingness to give space for the purpose. character of the organ upon which To eliminate this disturbing noise, it The cooperation of yourself and other the recital was played. The Cleveland was decided to install a 2,000 volt 20 listeners in your district with the news- Public Auditorium organ is the largest amphere hour storage battery, and use papers in your locality is therefore neces- in volume of any organ in the world the generator for recharging the battery sary and has been the cause of much interest In series. The Philadelphia Storage I "For reasons which are obvious, it upon the part of musicians as well as Battery Company supplied 333 Philco will be necessary that the request to be much curiosity upon the part of the Radio "A" Batteries for the purpose placed on this list must come from the public. The organ was designed and and regular broadcasting was started on newspaper direct. built by the Skinner Organ Company November 1. "This station will continue with the of Boston, Mass. RADIO AGE -"THE MAGAZINE OF THE HOUR" 19

The Monthly Service Bulletin of the NATIONAL BROADCASTERS' LEAGUE

Solely by, of and for Radio Broadcasting Station Owners George S. Walker Arthur E. Ford, E. E. W. J. Baldwin, W S Y Frederick A. Smith Western Radio Corporation State University of Iowa Alabama Power Co. Garrick Building, Denver, Col. First Vice President Birmingham. Ala. Chicago President Second Vice President Secretary Founded to promote the best interest of Radio Broad- casting stations In the United States and Canada. Executive Offices, Garrick Building, Chicago, Ill. DIRECTORS: T. B. Hatfield, W O H Stanley O. Need, W G A H J. Elliott Jenkins. W D A P President Hatfield Electric Co. The New Haven Electric Co. Midwest Radio Central, Inc. Indianapolis. Ind. New Haven, Conn. Drake Hotel, Chicago, Ill. S. W. Place. W B A G Earle C. Anthony, K F I Radio Engineer. Earle C. Anthony, Inc. H. A. Trask, K S D Diamond State Fibre Co. Los Angeles. Cal. St. Louis Post Dispatch Bridgeport. Pa. Howard E. Campbell, W W J The Detroit News, St. Louis. Mo. T. W. Findley, W L A G Detroit. Mich. Frank W. Elliott. W O C President and Genf. Mgt A. J. Westland. W W L Findley Electric Co. Physics Dept. Loyola University Palmer School of Chiropractic Minneapolis, Minn. New Orleans, La. Davenport. Ia.

President George S. Walker, of the situation. We all are trying to recover National Broadcasters' League, sent The Copyright from the effects of the war; business out a call for a convention of the league "Hold -up for none of us is what we would like to take place on January 16, but notices it to be, and for one concern, set of were mailed later informing broadcasters THE Secretary of the League has men or association to deliberately carry that the meeting had been deferred received numerous communications out a plan that' not only will wreck because of the postponement of the regarding the demand of the American another industry, but at the same time Society Second National Radio Exposition which of Composers, Authors and seriously injure their own, is beyond us. was to have been held in Chicago from Publishers, that the owners of copy- "However, law is law, and if you righted fee the 13th to the 20th of January. music be paid a by those have it on your side, it gives you the who broadcast their music, literature to drive, and if you It was felt that if a meeting were right and power and songs. elect to drive (broadcasters out of called during the show many broad- The majority of broadcasters appear casters could be present as attendants business), then all we can do is submit, to believe that the American Society take our loss in broadcasting invest- at both functions. A meeting will be of C. A. and P. is out to gouge the ment and let it go at that. It will held at a later date, and information broadcaster. At a recent conference in be all in a day's work. The results, concerning it will be forwarded to the New York, details of which are found membership at the earliest moment if unsatisfactory to your interests in the elsewhere in this number, the A. S. C. long run, cannot be laid at our door. after the date is set. A. P. was plainly told that its demands way would not be met by some of the more "It seems to us that another important broadcasting interests. out could be found by you, and we New members of the League since the Among those who have been dis- venture the suggestion that you could last issue are reported as follows: cussing the question with the A. S. C. require broadcasting stations to announce Kelley -Duluth Company, Dulutl i A. P. is Mr. George S. Walker, President the name of the publisher, song writer, Minn.; Lennig Bros. & Co., Ninth and of the National Broadcasters' League. composer, etc., before or after the Spring Garden streets, Philadelphia, Following is a portion of a letter which broadcasting of each number, and I Pa.; Gene Huse, Norfolk Daily News, Mr. Walker addressed to the society believe all broadcasters would be glad Norfolk, Neb.; Standard Radio Equip- in response to the society's elaborate to do this; whereas, I think you will ment Co., Fort Dodge, Iowa; D. W. questionnaire: find, generally speaking that the broad- May, Inc., 375 Central Ave., Newark, "The broadcasting of popular song casters will resent this present plan N. J.; H. J. Paar, 144 Second Avenue, and instrumental music, and reference of yours as being an attempted holdup, be East, Cedar Rapids, Ia.; Chicago Daily to same by the broadcasters in naming even though it should shown that News, Chicago, Ill.; Fort Worth Star the music house having these records you have a legal right to charge for the Telegram, Fort Worth, Texas. and music on sale, undoubtedly has privilege of using copyrighted pieces. "In writing as we have we sought As we were going to press others were gone a long way toward increasing the sales of said sheet music, and records, to help you rather than antagonize coming in through the mail and will be you, and no matter what slant this mentioned in the February issue. All and in this your society has undoubtedly benefited. You should remember that whole affair may take, we sincerely these new members are interested in the hope we will retain your friendship, possibilities of concerted action. when a song or instrumental piece is broadcasted, no one can make use of it as I wish' to assure you now that you other than to hear it, and we cannot have ours." The Secretary has received a letter see for the life of us how your rights from the Radio Broadcasting Society under the copyright law are infringed or abridged in Important Meeting of America, in which the following word any manner. However, as we are TIIE National Broadcasters' League of cheer is included: neither lawyer, son of a lawyer, or even a relative of a lawyer, we do will be represented at a conference "We are pleased to see that a good, not assume to say that your lawyers arranged by the Bureau of Standards, live Broadcasters' League is being de- are wrong in their legal opinions. But United States Department of Com- veloped in the Middle West and wish we do believe that common business merce, to be held in the Engineering you all success." horse sense ought to be applied in this Societies Building, 29 West Thirty- 20 RADIO AGE -"THE MAGAZINE OF THE HOUR"

ninth, New York, on January 12. The "Missouri Broadcasters' Associa- The purpose of the conference is to OWNERS o f broadcasting tion" schedules are as follows, 485 discuss the questions: station owners who have meters being used except when otherwise (1) Shall a formulation of standards not yet joined the National indicated: for radio apparatus and service (especially Broadcasters' League, may do The forenoon schedule for each day of broadcasting) be made? so by sending their check for the week except Sunday, from eight to (2) What type of standardization the annual membership fee of 12 o'clock noon, has each period of each should be initiated; thus what general $10 to Frederick Smith, Secre- hour divided in the same way, namely: classes of apparatus or service, or what tary, Garrick Building, Chi- The first 15 minutes of each forenoon specific parts should be considered most cago. hour, \VOS, the State Marketing Bureau important to include in such standard- Membership w i l l entitle of the Missouri State Board of Agricul- ization? broadcasters to periodical in- ture of Jefferson City; for example, As to classes of apparatus: Trans- formation as to developments from 8:00 to 8:15. mitting apparatus -Complete sets, l'arts; in connection with broadcast- The next 10 minutes, \VMAJ, Kansas Receiving apparatus- Complete sets, ing, intelligence as to steps City Drovers Telegram; for example, Parts (See Appendix I). taken to eliminate the present from 8:15 to 8:25. As to classes of service: Broad- almost disastrous interference The next 15 minutes, WHB, Sweeney casting- Primary -radio telegraph, Local and news of events in any Automobile School of Kansas City; for -radio telephone; Ship and shore; part of the country affecting example, 8:25 to 8:40. Aircraft ; Point -to- point- Overland, broadcasting and broadcasting The next 10 minutes, KSD, St. Louis Transoceanic; Amateur; Line radio - interests. Also members will Post -Dispatch; for example, 8:40 to 8:50, On telephone lines, On power- distribu- receive the official organ of KSD as yet does not start until 9:40. tion systems. the League for one year. The next 10 minutes, WOQ, \Vestern (3) What features should be covered This nominal fee is required Radio Company of Kansas City; for in formulating standards for radio ap- for the cost of issuing circulars example, from 8:50 to 9:00. paratus? and handling the large volume WDAF, the Kansas City Star, is not a. Methods of rating; b. Methods of correspondence. You will in the air before noon. of testing; c. Dimensional standard- find it useful to be associated During the noon hour the schedule is ization- (1) For electrical interchange- directly with this clearing the same as before noon, excepting that ability, (2) For mechanical and di- house for broadcasting infor- \VHB will be in the air on 485 meters mensional uniformity; d. Specifica- mation, which is also a pro- only from 12:25 to 12:35, going then to tions for general requirements; e. Speci- tective institution, offensive 400 meters for the balance of hour. fications for purchase; f. Specifications and defensive. WOQ and KSD have from 12:35 to 1:00 for safety. for use on 485 meters as they may see fit. (4) Should steps be taken to provide From 1:00 to 2:00 p. m., the schedule testing facilities? tion of Electrical Inspectors; Nationa runs the same excepting that WOQ is (5) What procedure shall be recom- Electric Light Association; Nationa out of the air and WHB sends from 1:25 mended for carrying out the conclusions Fire Protection Association; Nationa to 1:40 and 1:50 to 2:00. reached by this conference? Radio Chamber of Commerce; Nationa At 2 o'clock WOS begins with its usual (6) What general recommendations Research Council; National Retail Dry 15 minutes. WMAJ has the next 15 should be made to a continuing com- Goods Association; New York State minutes until 2:30. WHB will be on mittee should such a committee be estab- Conference of Mayors; Pacific Radio 400 meters during this hour WOQ is on lished? Trade Association; Radio Corporation 485 meters from 2:30 to 3:00. (7) What consideration should be of America; Sears, Roebuck & Co.; 3:00 to 4:00 p. m. -WHB, 3 to 3:30; given to related lines of activity ?(e. g., Society for Electrical Development; WDAF on 400 meters 3:30 to 4:30. standardization of terms and symbols). Tropical Radio Telegraph Co.; Under- 4:00 to 5:00 p. m. -KSD, the St. Louis Among the organizations which have writers' Laboratories; U. S. Department Post -Dispatch. been invited to attend the conference of Agriculture; U. S. Department of 5 :00 to 6:00 p. m.-\NOS, Jefferson City. are the following: Commerce; U. S. Navy Department; 6:00 to 7:00 p. m. -WDF, the Star. to Western Radio Aeronautical Chamber of Commerce; U. S. Post Office Department; U. S. 7:00 8:00 p. m.- Electric Railway Association; Shipping Board; U. S. Treasury Depart- Company WOQ on 485 and Sweeney's American meters. American Engineering Standards Com- ment; U. S. War Department; U. S. WHB on 400 mittee; American Institute of Electrical Independent Telephone Association; By an agreed arrangement between Engineers; American Radio Relay League: \Vestern Association of Electrical In- the Kansas City broadcasters, the divis- American Railway Association; Amer- spectors; Woolworth, F. W. & Co. ion of time from 12:00 to 3:00 will be ican Physical Society; American Tele- Comprehensive report of the action varied somewhat on Saturday only. phone & Telegraph Co.; American taken at this conference will be pub- The night programs of all Missouri Society for Testing Materials; American lished in the bulletin of the National stations remain the same as formerly. Steamship Owners' Association; Asso- Broadcasters' League in the February On Monday, Wednesday and Friday ciation of Edison Illuminating Com- number of Radio Age. This is likely nights WDAF broadcasts on 400 meters panies; Association of Railway Electrical to be the mast important radio con- and \VOS on 360, both beginning at 8 Engineers; Association of Railway and ference since the sessions of last Spring, o'clock. WHB broadcasts on 400, Public Utilities Commissions; Bakelite which also were held under the auspices Tuesday and Thursday nights, from 8 Corporation; Boy Scouts of America; of the Department of Commerce. to 10:30. KSD, each week night, 400 Chamber of Commerce of U. S.; Charles meters, beginning at 8:00. WOQ, Satur- Williams Stores; Electrical Manufac- The Missouri Plan day night, 8 to 9, 360 meters. turers Council -Electrical Manufac- Recognizing the need for eliminating Sunday -WOQ, 11:00 to 12:00 and 7 turers Club, Electric Power Club, Asso- interferences and duplications of radio- to 7:30; WDAF, 4 to 5; WHB, 8:00; ciated Manufacturers of Electrical Sup- phone transmission in this territory, WOQ on 360; WDAF and WHB on 400 plies, Radio Apparatus Section; Elec- the Missouri Broadcasters' Association meters. trical Supply Jobbers Association; Elec- has been organized, with Jewell Mayes of Does not this re- arrangement of trical Testing Laboratories; Federal Jefferson City as President and Leo schedules, eliminating practically all Specifications Board; Federal Telegraph Fitzpatrick of Kansas City as Secretary. interferences among all Missouri broad- Co.; General Radio Co.; Institute of U. S. Radio Inspector E. R. Bean of the casting stations, make the average Radio Engineers; International Associa- Department of Commerce was present receiving set in a Missouri farm home or tion of Municipal Electricians, Kresge and legalized the new schedules, which office worth at least twice as much as it Co., S. S.; Manufacturers Aircraft Asso- went into effect on the morning of was under the old jangling conflict of ciation; Montgomery Ward & Co.; November 27, 1922, leaving each station radio transmission? National Association of Electrical Con- free of interference from other Missouri From Missouri State Marketing Association, tractors and Dealers; National Associa- stations. Bulletin. RADIO AGE-"THE MAGAZINE OF THE HOUR" 21 Pick -Up Records by Our Readers

I would not exchange a Reinartz for a of an entertainment program is claimed Some Crystal Records dozen vario- coupler, variometer hook by Station WGY, owned by the General A typographical error in the November ups. Electric Company at Schenectady, N. Y., issue of Radio Age made it appear that on a report received from Hilo, Hawaii, On Monday, November 13, 1922, George C. Haseltine has picked up a which is about 4,951 miles from Schenec- brought in the following stations which station 6,000 miles distant with a tady, when the distance is calculated on crystal set. The distance, of course, I claim is some record: WAAF, Chicago; WBU, Chicago; WGY, Schenectady, the globe. The distance estimated by should have been 600 miles. However WGY on map was 5,200, is N. Y.; New York, N. Y.; WJZ, the but this the mistake was more or less of a bless - WEAF, subject to correction. in disguise. It served to prove that Newark, N. J.; KDKA, E. Pittsburgh, London, England, heard the station Pa.; WGM, Atlanta, Ga.; WSB, Atlanta, has Radio Age has a strong following, for at Newark, N. J., (WJZ), and a ship Mr. Haseltine has been flooded with Ga.; WWJ, Detroit, Mich.; WCX, Detroit, in the harbor at Cherbourg has heard correspondence about the ' "6,000- mile" Mich.; WHB, Kansas City; WGY. These distances are about 3,100 performance until he is tired of trying to WGAF, Kansas City, Mo.; KSD, St. Louis, Mo.; WBAP, miles. tell the eager fans how come. Star Telegram, The Detroit News frequently hears Ft. Worth, Texas; WOC, Davenport, Mr. Haseltine writes the following from ships in the Pacific -notably the which will interest all devotees of the Iowa; WLW, Cincinnati, Ohio; WHAS, reports Louisville, Ky.; WLAP, Louisville, Ky.; Easterner, which that between crystal: Panama 13, WGAS, Australia and on October Fort Stockton, Texas, Dec. 12, 1922. WDAP, Chicago; Chicago; 1922, it WWJ WMAQ, Chicago; XYW, Chicago. heard a concert and Editor, Radio Age, "greatly appreciated" it at a distance of 64 West Randolph St., Chicago. This list of stations was brought in 3,500 nautical miles, which is 4,030 Dear Sir: from 3:30 p. m. to midnight notwith- ordinary miles. In your letter of the 4th inst., you standing the fact that we received the A letter from the operator aboard the indicated that you would appreciate any entire opera "Aida. Would like to ship Eastener tells of hearing The News more records of long distance reception have some vario- coupler, variometer complete concerts three successive nights with a crystal receiver. "bugs" shoot at this record. Oct. 11, 12 and 13, while en route from Here are a few amateur spark stations New York to Australia. On the last The aerial used in this is 7 that I have heard working this season, test but feet from ground at one end and 20 feet night the ship was 2,500 nautical miles using a small loose coupler and the southwest of Panama, in latitude 9 regular crystal hook -up. high on other end (which is bad in end). degrees south, longitude 112 degrees Call Location Miles Distance Date Sincerely, west, and a calculated great circle dis- 9 DSD E. Hutchinson, Kas.__573- _.__Nov. 10 W. G. LEHR, tance of 3,500 nautical miles from 9 AQE Eldorado, Kans.___ ._.592._.__Nov. 7 Detroit. 9 RR Lawrence, Kans. __703______Dec. 11 6842 So. Ada St., 9 BMN Sedalia, Mo._._..._.777_..__.Oct. 28 9 AOJ Columbia, Mo.__..._._814.__-Dec. 11 Chicago, Ill. 9 NC *University City. Mo. .._____ Dec. 11 9 MC Roodhouse, III.____._.823._.___Nov 1 Renting Receivers 9 DAY Canton. Ill.__ ._._._999_____Dec. 11 9 ICY Polo. Ill._ ____.1073____Dec. 11 Relative to the article entitled "Plan 9 BM Chicago, Ill. _1147_.__Nov. 8 to Popularize Radio," published in last *(Not on map.) Hawaii Gets Detroit month's Radio Age, Mr. E. L. Russell, for It is not the hook -up that makes this A distance record the reception of proprietor of Colfax Battery Service, a of radio possible, for I use nothing but the complete program entertain- Colfax, Ill., writes as follows: regular crystal hook -up such as every ment was established between the Detroit Dear Sir: one knows, (or should know). News broadcasting station, WWJ, and "In regard to your "Plan to Popular- It is partly owing to my isolated situa- the postmaster of Wailuku, Hawaii, ize Radio," I will say I think enough of tion, no interference from trees, buildings, November 23. it to begin asking questions. Is it not mountains, etc., a well insulated aerial On that night The Detroit News true that the big fault is in the fact that and lead in, with all connections soldered, Orchestra, which was the first radio there is nothing to prevent individuals a first class ground, and using a small orchestra in the world, played "Three from buying cheap crystal sets outright, loose coupler, properly wound. O'clock in the Morning" in the studio in or, for that matter, constructing their It is an error to put too much wire on the News Building at about midnight, own, and avoid paying rents? The the primary; I bring in 200 meter stations and was heard "clearly and distinctly" telephone companies get their compensa- with only the first 9 or 10 turns of the in the Hawaiian Islands at about 6:30. tion for service by owning the lines. primary, and 600 meter ships with 21 The sun is that slow between the two Who owns the air? Even if the local to 24 turns. points. The distance is figured at approx- broadcaster sold every outfit used the No one can expect to good long dis- imately 4,400 miles. It would take profit would not be sufficient to buy tance work with cheap phones and poor sound of a cannon five hours and forty - and maintain a broadcasting outfit. crystal. I use phones, or one minutes to travel from Detroit to Undoubtedly the idea is novel and has Very truly, Hawaii without the aid of electricity - merit but the financial scheme looks like GEO. C. HASELTINE. if that big a sound could be made, which a joker. If it was not for the financial is rather impossible. draw -back the plan would have been in ago and we would But the notes of this music on the operation here months have Mr. H. about wings of radio arrived on the beach of written to Gernsback it, of him writing us it. Reinartz Excels Wailuku in about one fiftieth of a second instead about Dear after leaving the antenna atop The "The only solution I see would be to Sir: local Commerce News. Thus were contested the flight appeal to the Chamber of Some time ago I built a Reinartz set as or like. So far I not been able of time and the extent of space. the have outlined by you with the exception of to find any institution around here using a 43 plate and 23 plate variable The - letter received by The News willing to support a local short range condensor instead of 23 and 11 plate, from the Hawaiian postmaster, A. F. broadcasting station." as per your hook up. Costa, says, "It sure was some sweet Have two steps of amplification and I music. There were substantiating wit- want to state that I am getting wonder- nesses." The report from the postmaster Send $1.00 to Radio Age, 64 W. ful results with this set. tallies with the station log. Mr. Costa Randolph Street, Chicago, and Have had set' in operation for about heard the whole program of the orchestra receive this middle -west radio two months and have brought in some without interruption. periodical for six months. Regular forty different stations. The distance record for a single number subscription price is $2.50 a year. 22 RADIO AGE-"THE MAGAZINE OF THE HOUR" Questions and Answers Free Special Service Department, Conducted by Frank D. Pearne

For prompt rep lies by mail, readers was too low on account of not enough than the regular vacuum tubes. Is that should enclose self- addressed and wire you would have trouble. You so? stamped envelope with their inquir- do not need your amplifier to bring in Answer: The Reinartz tuner can be ies. distance, as it will only intensify those used for this purpose, but I would advise sounds which are brought in on the the use of the long distance crystal set detector. If you are sure your winding described elsewhere in this issue. The is correct according to the drawing, I volume will not be so great as would be C. P. J., St. Louis, Mo. would advise you to wind another coil, obtained with the larger tubes but it using a few more turns in the aerial and could be used with a loud speaker. The Question: I built a Reinartz receiv- grid coils. wave length could be anything you ing set, as per your diagram in last want, depending upon the number of months Radio Age. I am not having turns on the vario- coupler, and the any results with it on long distance F. L. G., Chicago, Ill. distance might be anything up to 100 stations. If I get any long distance miles, or more. By putting one of these stations, there is a howl or whistle in Question: I have been doing con- tubes ahead of the crystal, greater dis- the coil or tube all the time. If I put my siderable experimenting using the Rein - tance could be brought in. The WD11 hand near the dials, or tuning switches, it artz circuit described in a late issue of the tubes do give a very smooth reception makes the noise worse. Sometimes I Radio Age, and have obtained some and many users say that they are much can put my hand in a certain place and wonderful results on short wave work. better than the larger tubes for detectors, if I hold it there I can tune the stations What I would like to know is, can I load but as amplifiers, they work well, but in, but rs soon as I move my hand, it this circuit sufficiently to get the large do not have the volume of the larger will start to whistle. I have a two- strand commercial stations, say from 5,000 tubes. One dry cell will run a tube of aerial about 30 feet long. I have got the meters up. If so, where is the proper this kind for about three months if 23 plate condenser on the ground side, place to insert the proper inductances? used for one hour every day. If you with the rotating part hooked to the I am planning on using honey -comb use three tubes, three cells connected in ground and I have got the 43 plate on coils. Will I need an extra coil in the parallel would run them for the same the aerial side, with the rotating part feed back circuit, that is, in the 60 turn length of time. hooked to the aerial. I have got a coil? .0005 grid condenser hooked between Answer: This tuner can be loaded very the grid and the coil and I am using a nicely. It is best done by adding a W. S. J., Quincy, Ill. U. V. 200 detector tube. I am not switch point at the beginning of the I am much interested in using any amplification all. .Could aerial coil. This is just adding one more Question: at the Armstrong super- regenerative circuit this be my trouble? If I use a crystal contact which is not connected to the built by Mr. Paul B. Coats, as described coil in series with the aerial to the tube coil. Another extra switch contact is in the September number of Radio Age. set, I can get pretty good results. If I added on the extreme end of the grid I have had but little experience in build- do not use this coil, there is a howling switch, but not connected to the coil. ing sets and fear the chances for success noise all the time. I get KSD loud A honey -comb coil is then connected small, unless I had enough to hear all over room from across these two contact points, with a would be very the the assistance showing the arrangement of the phones, without the coil. tap taken off about three quarters of crystal instruments on panel, etc. Could you The crystal coil just works good on long the way from the end on the aerial distance stations. switch. This tap is then connected to give me a sketch of same? The circuit the ground. No additional connection looks very simple on paper, but I learn from wise heads that such is not the Answer: I think that you can stop is used on the plate, or tickler coil. With the two switches on these new points case with anything super- regenerative. some of the howling by lining the back of Would it be feasible to build the circuit your panel with tin foil and connecting long wave reception can be obtained. The length of the waves so received will with unit panels, such as Sears Roebuck it to the ground. You can cut away & Co., adding the extra condensers, etc.? the tinfoil at any place where the instru- depend only upon the number of turns in this exterior coil. Several of these Answer: I am very sorry that I have ments on the panel might touch it. no panel layout for the Armstrong Nothing should come in ,contact with it may be made, making it possible to tune in on several different wave lengths. super- regenerative set which you men- but the ground wire. If you put your tion. There are some two or three dozen hand near the coil, the whistling would of these circuits out, and the panels for probably cease, but it should not be each one would have to be different. I necessary to use the hand at all. You F. G., Pittsburgh, Pa. am sure, however, that if you would will find that in getting long distance write to Mr. Coats, he would oblige you stations, the rheostat of the detector Question: Can a spider web Rein - with a sketch of the panel which he is ube is the most sensitive of all the artz tuner, as given in Radio Age in using. His address is 336 W. 47th St., adjustments. This really should be of September, be used with a Galena Chicago, Ill. Very few amateurs have the vernier type. I have found it Detector and W D 11 tubes (2 of them) been able to make this circuit function, impossible to get distance with these as amplifiers with loud speaker attached? or very few experts for that matter, sets without turning down the filament If so, what distance would this tune up and those who have done so, say that rheostat to a much lower point than to? Give hook -up, stating what batteries, there are many other circuits which that used for local stations. Your state- kind of transformers, etc., I need. If are better for receiving distance than ment about the addition of the crystal Reinartz tuner won't work, with crystal the Armstrong super. The panel arrange- coil is interesting. This of course adds detector and W D 11 tubes, what tuner ment which you mention, would be a inductance to your set and would tend would you recommend? I have at very good idea, as it would enable you to show that there are not enough turns present a double slide tuner,' with to try out many different circuits by on it. The fact that you don't need the fixed condenser and Galena detector. changing the units about. coil when getting local stations means What would the probable life of the nothing, as at close range the tuning is batteries be for WD 11 tubes? If so broad that you could get them even Reinartz tuner works, with WD11 Send $1.00 to Radio Age, 64 W. Ran- though there are not enough turns on tubes, would it improve it to have a dolph Street, Chicago, and receive your coil, but with distance stations WD11 tube before the Galena detector, this middle -west radio periodical it is different. Here you need sharp as well as the 2 after? I am told that for six months. Regular subscrip- tuning and if the wave length of the coil the WD11 tubes give a smoother tone tion price is $2.50 a year. RADIO AGE -"THE MAGAZINE OF THE HOUR" 23 Interference Causes Lawsuit THE question as to whether or from sending stations in larger attorneys who have not yet ex- not one may use the air and cities and that Bergman well knows perienced such a problem. -From space as provided by the that the sending stations in Chicago, the Pontiac (Ill.) Leader. Maker of the universe in a free and Davenport, St. Louis, Atlanta and untrammeled way is to be decided other cities have programs an- at an early session of the Livingston nounced in advance to be broad- county (Ill.) circuit court. casted each day and well knows that The question as to whether any persons in Dwight are enjoying Symphony Concerts one person has more liberty in the them and that he does not regard Sunday afternoon popular con- use of the ether of space has been the right of the plaintiff and other certs by the City symphony Or- brought in the case of Edward Mc- persons in receiving these programs chestra, are being broadcast by the Williams, a resident of Dwight, but frequently interferes with them Westinghuse -Radio Corporation against Wiley Bergman, also a resi- and renders them wholly useless. station, WJZ, at Newark. These dent of Dwight, and both ardent The bill sets forth that on No- concerts are held at the Manhattan amateur radio fans. The case is the vember 7, election day, that while Opera House, 34th Street & 8th first one heard of in the state of the plaintiff was receiving the elec- Avenue, New York City, and are Illinois and possibly the first of the tion returns that his apparatus was conveyed to WJZ by a special amateur sort in the United States. rendered useless because of the fact Western Union wire. The programs In his bill as filed Mr. McWilliams that Bergman by reason of his dis- consist of gems from the lighter sets forth the fact that he is inter- regard of the rights of the plaintiff classics together with shorter sym- ested in radio and has had his resi- so used his sending apparatus that phonic poems. Young soloists of dence property in Dwight equipped the receiving of the election returns real talent and distinction are heard with wires and apparatus necessary was interfered with and stopped for at each performance. to receive the messages and infor- more than six times in the one day. mation sent out by the various radio The bill states that because of the The City Symphony Orchestra, sending stations of considerable size great development of the radio that which is maintained by the Musical and in any considerable part of the a sending station should be so oper- Society of the City of New York, United States, which apparatus cost ated and controlled that it will not consists of 83 players carefully him a considerable sum, to -wit $500. necessarily make useless the appa- selected for their musical talent and ratus owned by the various receivers. symphonic experience. The con- He also states that in Dwight, ductor, Mr. Dirk Foch, a native of which is a town of about 2,000 popu- The bill also states that it is really possible for Bergman to use his Holland and a composer of dis- lation, there are from fifteen to tinction, has had a successful career twenty receiving outfits similar to sending apparatus at times each day when it will not seriously annoy and as a conductor of symphony con- his own. He states further that he certs and opera in Amsterdam, The has made a considerable study of inconvenience the plaintiff and the other residents of Dwight in the use Hague, Stockholm, Gothenburg, radio and receives much emjoyment and other European cities. He and pleasure from receiving of mar- and enjoyment by them of their re- ceiving apparatus. conducted several stadium concerts ket reports, items of current news, in 1919, a special Carnegie Hall concerts and programs which are Mr. McWilliams, in his bill, asks concert in 1920, and was guest con- sent out by the radio sending sta- that Bergman may be enjoined and ductor of the St. Louis Symphony tions. . restrained from using his radio send- Orchestra for two concerts in 1921. The bill then states that one Wiley ing apparatus as to interfere with Bergman, who is also a resident of the rights of the plaintiff to the rea- The object of the Musical So- Dwight, has established a radio sonable use, enjoyment and bene- ciety of New York is to bring or- sending apparatus and station of fit of his radio receiving apparatus, chestral music of the highest stand- great power; that he is not engaged and so using his sending outfit as to ard within the reach of the general in any business which calls for the render useless and of small value public. It therefore welcomed with sending of messages and communi- the receiving outfit, and from so enthusiasm the proposal to broad- cations by radio and does not send using his sending outfit as to un- cast its concerts to the hundreds of messages to any profit to himself. necessarily and unreasonably de- thousands composing the radio audi- The bill states further that when- preciate the value of the plaintiff's ence and is preparing to make these ever Bergman's apparatus is in property and from using his radio concerts the finest musical event operation in the sending of messages sending outfit at such hours of the ever handled by radio. Before each that it interferes with the receiving day as he well knows are daily used, performance a member of the So- apparatus of Mr. McWilliams and by the sending stations in the larger ciety discusses the compositions to with the radio apparatus of other cities for the broadcasting of their be heard, and explains their musical residents of Dwight and that their programs and which he well knows significance. outfits are wholly useless and inef- are being received by the plaintiff fective The series of concerts was started regardless of the skill with and other citizens of Dwight. Mr. in November. which they are operated and that McWilliams also asks that the right late Bergman will not and does not con- of himself and the rights of the de- fine himself to any regular hours or fendant may be fully established. The Homecharger charges your times for operating his sending ap- The case is a unique one and in- AUTO or RADIO Battey for Nickel paratus, but starts and operates it volves some questions of law entirely Price $18.50 at times and hours when he well new. It undoubtedly will be closely Send for FREE Bulletin 1' W. , Dealers -Write Now. ..i" . ' Electrical knows that the other owners of watched, both by radio fans `' M . The Automatic i w\ Devices Co. radio outfits in Dwight are receiving throughout the state and country l4ßi,oi 1mtitl.Iiird t. concerts, programs, market reports when it comes to trial, but also by - 4 cineln o: 24 RADIO AGE -"THE MAGAZINE OF THE HOUR" Corrected List of U. S. Stations Alphabetically by Call Signals

K DKA. E. Pittsburgh. 1'a.; Class B station, up to 485 meters; Westinghouse Elec. k KQY. Portland. Ore., Stubbs Eke. Co. Mfg. Co. KRE, Berkeley. Calif., Maxwell Electric Co. K D N San Francisco, Calif. ; Leo J. Meyberg Co. KSD, St. Louis, Mo., St. Louie Yost -Diepatch. K DOWN, Steamship America, New York. DSC, San Joel, Calif., O. A. Hals & Co. KDPM, Cleveland, Ohio; Westinghouse Elec. k \Ifg. Co. KSL, San Francisco Calif. The Emporium. K OPT, San Diego. Calif. Southern Elec. Co. KSS, Long Beach, Calif., $rest & Dean Radio Research Lab. 1(1),(1., Salt Lake City, Utah; news music. entertainment, Telegram Publishing Co. KSU Wenatchee. Wash.. 300 and 485. KDYM, San Diego. Calif.; Savoy Theatre. KTV', Seattle, Wash.. First Presbyterian Church. KDYD, San Diego, Calif.; Carlson & Simpson. KUO, San Francisco, Calif., Examiner Printing Co., San Fran. Examiner. KDYQ, Portland, Ore.; Oregon Inst. Technology. " KUS. Los Angeles, Calif City Dye Works k Laundry Co. KDYR, Pasadena. Calif.; Pasadena Star News Pub. Co. KUY, Del Monte Calif.. Coast Radio Co. KDYS, Great Falls, Mont.; Class B, 485 meters, Great Falls Trihune. KVQ, Sacramento, Calif.. ames McClatchy; J. C. Hobrecht. KDYV, Salt Lake City, Utah; Cope & Cornwell Co. K W G. Stockton, Calif., i'ortable Wireleee Telephone Co. KDYW, Phoenix, Arizona; Smith Hughes & Co. K W H, Los Angeles. Calif., 485 also Los Angeles Examiner. KDYA, Honolulu. Hawaii; Honolulu Star Bulletin Co. KXD, Modesto, Calif.. Herald Publishing Co. KDZA, Tucson, Ariz.; Arizona Daily Star. K XS, Los Angeles, Calif.. Braun Corp. KDZB, Bakersfield. Calif.: Frank E. Seifert. KYF, San Diego. Calif., Thearls Music Co. KDZE, Seattle, Wash.; Rhodes Co. KYI, Bakersfield. Calif., Alfred Harrell. KDZF, Los Angeles. Calif.; Automobile Club of Southern California. KYJ, Los Angeles, Calif., Leo J. Meyberg Co. KDZG, San Francisco, Calif.; Cyrus Pierce k Co. KYQ, Honolulu, T. H., The Electric Shop. KDZH, Fresno. Calif.; Fresno Evening Herald. Class B. 845. KYW, Chicago, Ill., Westinghouse Elec. & Mfg. Co. KYY, San Francisco, The Radio Telephone Shop. KDZI, Wenatchee, Wash. ; Electric Supply Co. Calif.. KDZK, Reno. Nev.; Nevada Machinery & Elec. Co. KZC Seattle, Wash. Public Market k Dept. Store Co. KDZL, Ogden, Utah; Mountain Corp. 1(231, Oakland. Calif., Western Radio Inst.; Preston D. Alle,,. KDZM, Centralia, Rocky Rad. KZN, Salt Lake City. Utah. The Deseret News. Los Angeles, Newbery Electric Co. KZV. Wenatchee, Wash., Wenatchee Battery & Motor Co. KDZP. Calif.: KZY, San Francisco. Radio Supplies Co. KDZA Denver, Colo.; Motor Generator Co. Calif., Atlantic -Pacific Gerdes. NOF. Anacostia, D. C.. 912 only. U. S. Navy Dept. KDZW. San Francisco, Calif.; Claude W. PWX, Havana, Cuba, Cuban Telephone Co. San Tabernacle. KDZX, Francisco, Calif.; Glad Tidings WAI, Dayton, Ohio, McCook Field, U, S. Army. K DZZ, Everett, AVashington; Kinney Bros. k Sipprell. WAAB. New Orleans, La.. Valdemar Jensen KFAC. Glendale, Calif.: Class B, 845, Glendale Daily Press. WAAC, New Orleans, La., Tulane Univ. KFAD, Phoenix, Ariz.; Class B. 485, McArthur Bros. Mercantile Co. WAAD, Cincinnati, Ohio, Ohio Mechanics Met. KFAE, Pullman, Wash.: State College of Washington. WAAF, Chicago, Ill., Chicago Daily Drovers Journal. KFAF, Denver, Colo.; George S. Walker, Western /Radio Corp. WAAE, St. Louis, Mo., St. Louis Chamber of Commerce. KFAD, Boulder, Colo.; University of Colorado. V WAAG, Shreveport, La., Bordeaux Co.; Elliott Electric Co. KFAN, Moscow. Idaho; Electric Shop. WAAH, St. Paul. Minn.; Commonwealth Electric Co. KFAP, Butte. Mont.: Standard Pub. Co. WAAJ Boston, Mass., Eastern Radio Inst. KFAQ, San Jose, Calif.; City of San Jose. WAA1, Milwaukee, Wis., Gimbel Broe. K FA R, Hollywood. Calif. ; Studio Lighting Service Co. WAAM, Newark, N. J., I. R. Nelson Co. KFAS, Reno. Nev.; Reno Mtotor Supply Co. WAAL, Minneapolis. Minn., Minnesota Tribune Co. & Anderson- Iteamish Co. KFAT, Eugene, Oregon: Pacific Radio Co. V WAAN. Columbia. Mo.. Univ. of Missouri. KFAD, Boise, Idaho; Class B. 985, Boise High School. WAAD. Charleston, W. Va., Radio Service. KFAV. Venice, Calif.' Abbott Kinney Co. .WAAP, Wichita, Kane., United Eke. Co.' Otto W. Taylor. KFAW, Santa Anna, Calif.; Class B. 985, Radio Den. WAAQ, Greenwich, Conn., New England Motor Sales Co. K FAY, Central Point, Ore. W. J. Virgin Milling Co. WAAR, Huntington, W. Va.. Groves- Thornton Hdwe. Co. KFBA, Lewiston. Idaho: Ramey k Bryant Radin Co. WAAS, Decatur. Ga.. Georgia Radio Co. KFBB, Havre, Mont. F. A. Buttrey & Co. WART, Jersey City, N. J., Athens Radio Co. KFBC, San Diego. Calif.; W. K. Azb111. WAAV Athens, Ohio. Athens Radio Co. KFBD, Hanford, Calif.: California Radio Lab. WAAM, Omaha, Neb., Omaha Grain Exchange. KFBE, San Louis Obispo. Calif. R. H. Horn. WAAX, Crafton, Pa., Radio Service Corp. KFBG, Tacoma. Wash.; First Presbyterian Church. WAAY, Youngstown, Ohio, Yohrling Rayner Music Co. KFBH, Marshfield, Ore.; Thomas Musical Co. WAAZ. Emporia. Kansas Hollister -Miller Motor Co. KFBD Boise, Idaho: Boise Radio Supply Co. WAH. El Dorado, Kans., Midland Refining Co. KFBIl, Sacramento, Calif.; Kimball -Upson Co. WAIT, Marshall, Mo.. Kelly -Vawter Jewelry Co. KFBL Everett, Wash.: Leese Bros. WAJU, Yankton, S. D.. Yankton College. KFBM. Astoria, Ore.; Cook k Foster. WBAA, W. Lafayette. Ind., Purdue University. KFBA, Prescott, Ariz.; Savage Elec. Co. WBAB, Syracuse, N. Y., Syracuse Radio Tel. Co.; Andrew J. Potter. KFBU, Laramie. Wyo.; N. S. Thomas. WBAD, Minneapolis. Minn., Sterling Elec. Co. & Journal Printing Co. KFBV, Colorado Springs. Colo.; Clarence O. Ford. WBAE, Peoria, Ill., Bradley Polytechnic Inst. KFC, Seattle, Wash.; Northern Radio & Elec. Co. WBAJ. Moorestown, N. J., Fred M. Middleton. KFCB, Phoenix. Ariz.; Nielson Radio Supply Co. WBAG, Bridgeport. Pa. Diamond State Fibre Co. KFCC, Wallace, Ida.: Auto Supply Co. WBAH, Minneapolis, Minn.. The Dayton Co. KFCD, Salem, Ore.; F. 8. Barton. WBAJ. Toledo, Ohio, Marshall- Gerken Co. KFCF, Walla Walla, Wash. Frank A. Moore. WBAM, New Orleans, La., I. B. Rennyson. KFCH, Billinge, Mont.; Elec. Service Station. WBAN, Paterson, N, J., Wireless Phone Corp. KFCK, Colorado Springs. Colo.; Colorado Springe Radio Co. WBAD, Decatur, III.. James Millikin Univ. KFDA, Baker. Ore.; Adlcrs Music Store. WBAA, South Bend. Ind.. Myron L. Harmon. KFED, Billings Polytechnic Institute, Polytechnic, Mont. WBAP, Fort Worth, Texas, 400 and 485; also Ft. AA'orth Star Telegram : ic.,rrhs.e KFDB, San Francisco, Calif.; Mercantile Trust Co.. also 400. Carter Publishing Co. KFDD, Boise, Idaho; St. Michael's Cathedral. WBAD, Hamilton, Ohio, Republican Puhishing Co. KFDB, San Francisco, Calif.; John D. McKee. WBAV, Columbus, Ohio, 485, also Erner k Hopkins Co. KFEB. Taft, Calif.; City of Taft. WBAW, Marietta. Ohio. Marietta College. KFCQ. Casper, Wyo.; Motor Service Station. WBAX. Wilkes- Barre. Pa.. John H. Stenger, Jr. KFDL, Denver. Colo.: Knight Campbell Musk co. WBAV, New York, N. Y., American Telephone & Telegraph Co. KFDL Corvallis, Ore.; Oregon Agri. College. WBL, Anthony, Kans.. T. & H. Radio Co. KFDC, Spokane, Wash.: Radio Supply Co. WBS. Newark. N. J., D. W. May, Inc. KFDF, Casper, Wyo.; Wyoming Radio Corp. WBT. Charlotte, N. C.. 985 also Southern Radio Corp. KFEC, Portland, Ore.; Meier k Frank Co. W B U, Chicago, Ill., City of Chicago. KFFA, San Diego, Calif.; Dr. R. C. Shelton. WBZ, Springfield, Maas., Westinghouse Elec. k Mfg. Co. KFCL, Loe Angeles, Calif.; Los Angeles Union Stock Yards. WCAG, Newburgh, N. Y., Newburgh Daily News: Newburgh News Printing & Pab. Co. KFFE, Pendleton. Ore.; Eaetern Oregon Radio Co. WCAG, Fort Smith. Ark., John Fink Jewelry Co., KFEJ. Tacoma, wash.; Guy Greason. WCAD, Canton, N. Y., St. Lawrence University.` KFGG, Astoria, Ore.: Astoria Budget. WCAE, Pittsburgh, Pa., Kaufman & Baer Co. KFGH, Stanford Univ.. Calif. WCAG, New Orleans, La., Daily States Pub. Co. KFI. Los Angeles. Calif.; Earl C. Anthony, Inc. WCAH, Columbus, Ohio. Entrekin Elec. Co. Antonio, Texas, Southern Equipment Co. K F U, Gridley, Calif. ; Ths Precision Shop. WCAI, San Wash.; Foster -Bradbury Radio Store. WCAD Univ. Place, Neb., Nebraska Wesleyan University. KFV, Yakima, WCAIl, Houston, Texas, Alfred P. Daniel. KFZ, Spokane, Wash.; Doerr -Mitchell Elec. Co. Minn., St. KGB, Tacoma, Wash.; Tacoma Daily Ledger: Wm. A. Mullen's Elec. Shop. WCAL. Northfield, Olaf College. Wiring WCAM, Villanova, Pa., 'illanova College. ' KGF, Pomona. Calif.; Pomona Fixture k Co. WCAG, Baltimore, Md.. Sandere & Stayman Co.. KGG, Portland. Ore.; Hallock k Watson Radio Service. WCAP, Kalamazoo, Mich., Kalamazoo College. KGN. Portland. Ore.: Northwestern Radio Mlfg. Co. WCAQ. Defiance, Ohio. Tri -State Radio Mite. Co. KGO, Altalena, Calif.: Altadena Radio Laboratory. WCAR, San Antonio, Texas, Alamo Radio Elec. Co. KGU Honolulu, Hawaii, Waikiki Beach, Marion A. Mluironey; Honolulu Advertiser. WCAS, Minneapolis, Minn., Wm. H. Dunwondv Industrial Inst. KGV%, Portland. Ore. Oregonian Pub. Co.. also 400. WCAT, Rapid City S. Dak., 485 also South Dakota School of 51tttes. KGY. Lacey, Wash.: .St. Martin's College. (Rev. S. Ruth). WCAD, Philadelphia. Pa.. Philadelphia Radiophone Co. KHD, Colorado Springe. Colo. Class B, 485. C. F. Aldrich: Marble k Granite Co. Dice Class -4g%. WCAV. Little Rock, Ark., J. C. Elec. Co. KHI. Los Angeles, Calif. C. R. Klleruf & Co.: Times lllrrnr Co.. R. 400 WCAW, Omaha, Nebr., Woodmen of the World. KHQ, Seattle, Wash.: Louie Wasmer. WCAX. Burlington, Vermont. University of Vermont. KJC, Los Angeles. Calif.; Standard Radio Co. WCAY, Milwaukee, Wie.. Kesselman O'Drlscoll Co. K JI, Sunnyside, Calif.; The Radio Shop. WCAZ, Quincy, Ill., Robt. E. Compton k Quincy Whig-General. KM. Stockton, Calif.; C. O. Gould. WCE. Minneapolis. Blinn., Findley Elec. Co. K JS, Los Angeles. Calif. ; Bible Inst. of Los Angeles. WCJ, New Haven, Conn. A. C. Gilbert Co. K LB. Pasadena, Calif.: J. J. Dunn k Co. WCK, St. Louis, Mo., S, tix Baer & Fuller, KLM. Del Monte. Calif.; Nogale Elec. Works. WCM, Austin, Texas. Univ. of Texas. KLP, Los Altos, Calif.: Colin B. Kennedy Co/ WCN, Worcester, Maee.. 985 also Clark University." KFDH. Tucson, Ariz.: Univ. of Arizona. WCX. Detroit, Mich.. Detroit Free Press. KLS. Oakland, Calif.: Warner Bros. WDAC, Springfield, Ill., Ill Watch Co. KLX, Oakland. Calif.; Tribune Pub. Co. WDAE, Tampa, Fla., 985 also Tampa Daily News. KLZ, Denver, Colo.; Class B. 985, Reynold ,e Co. WDAF, Kansas City, Mo.. 400 and 985, also Kansas City Star. .KMAZ. Macon. Ga., Mercer University. WDAG, Amarillo, Texae, K. Laurence Martin. KMC. Reedlcy, Calif.; Lindsay-Wetherill Co. WDAH, El Paso, Texas, Mine k Smelter Supply Co. KMJ, Fresno, Calif. 955, San Joaquin Light k Power Co. WDAI, Syracuse. N. Y.. 985 also Hughes Electrical Corp. KMO, Tacoma. Wash., Love Electric Co. : Tacoma Times. WDAJ. College Park. Ga., Atlanta & West Point R. R. Co. KNI. Eureka. Calif.: T. W. Smith. WDAK, Hartford, Conn., Hartford Courant. KNJ. Roswell, New Mexico; 485, Roswell Public Utilities Co. WDAL, Jacksonville, Fla.. 985 also, Florida Times Union. K N N, Los Angeles, Calif.: Bullocke. WDAN, Shreveport, La., Centenary College and Glenwood Ratio Corp. KNT, Aberdeen, Wash.: North Coast Producte Co. WDAG, Dallae, Texas, Automotive Elec. Co. KNV. Loe Angeles. Calif.: Radio Supply Co. WDAP, Chicago, 111., 485 also. Midwest Radio Central (Inc.). KNX, Los Angeles, Calif.; Elec. Lighting Supply Co. WDAG, Brownevills, Pa.. Hartman -Riker Elec, & Mach.Co. KOA. Denver Colo.; Y. M. C. A. WDAR, Philadelphia, Pa., Lit Bros. K013. State Collette, New Mes.; New Mexico Collego of Agri. k Mechanic Aria. J WDAS, Worcester. Base.. Samuel A. Waite. KOE, Spokane, Wash.: Spokane Chronicle. WDAU, New Bedford. Maas., Slocum & Kilburn. KOG. Los Angeles, Calif.; Western Radio Electric Co. WDAV, lluakoeee, Okla., Daily Phoenix, KON, Los Angeles, Calif. 1 Holzwasser,DInc. WDAX, Centerville, Iowa. First Nat'l Bank. KDP, Detroit, Mich., WDAP. Fargo, N. D., Kenneth M. Rance. KOQ. Modesto, Calif.. Modesto Evening News. WDM, Waehington, D. C., Church of the Covenant. KPD, San Francisco, Calif.. Hale Bros. WDT, New York N. Y. Ship Owners Radio Service. KQI, Berkeley, Calif., Univ. of California. WDV, Omaha, Nebr.. John O. Yeiser. Jr. KOP. Hood River. Ore.. Blue Diamond Elec. Co.; Hood River News. WDY, Roselle Park, N. J., Radio Corp. of America. ittsburgh. Pa., DoubledayH111 Elec. Co. WDZ, Tuscola, Ill., James L. Bush. KQVF , San Jose. Calif., Chas. D. Harrold. W EAA, Flint. Mich.. Fallath & Lathrop. . 3 RADIO AGE -"THE MAGAZINE OF THE HOUR" 25 Corrected List of U. S. Stations Alphabetically by Call Signal s

WEAB, Fort Dodge, Iowa, Standard Radio Equip. Co. t, I K. AL L, r,u.t t. l'a.. K. & L. Elec. Shop. WEAC, Terre Haute, Ind., Baines Elec. Service Co. WI L, Washington. D. C.. Continental Elec. Supply Co. WEAO, Atwood, Kans., Northwest Kansas Radio Supply Co. WIP, Philadelphia, Pa., Gimbel Bros. WEAE, Blackaburg, Va., Virginia Polytechnic Inst. WIZ, Cincinnati, Ohio, 485 also Cino Radio Mfg. Co. WEAF, New York City, N. 'Y., Western Electric Co. WJAB, Lincoln, Nebr, American Radio Co. W EAG, Edgewood, R. I. Nichols- Hinelfne- Baasett Lab. WJAC, Joplin, Mo., Redell Co. W EA H, Wichita, Kans., Wichita Board of Trade and Lander Radio Co. WJA0, Waco, Texas, 485 also Jackson'a Radio Engrng. Lab. WEAL Ithaca, N. Y.. Cornell University. v" WJAE, San Antonio. Texas, Texas Radio Syndicate. WEAL Vermilion, 8. Dak.. University of South Dakota.,/ WJAF, Muncie, Ind., Muncie Press and Smith Elec. Co. WEAK. St. Joseph. Mo., Julius B. Abercrombie. WJAG, Norfolk, Neb., 485 also Norfolk Daily News. WEAN, North Plainfield, N. J.. Burough of N. Plainfield. WJAH, Rockford. Ill., Central Park Amusement Co. WEAN, Providence, R. I., The Shepard Co. WJAJ, Dayton, Ohio, Y. M. C. A. W EAO, Columbus Ohlo, Ohio State Univeralty.` MAR, Stockdale, Ohio, 485 also White Radio Lab. WEAP, Mobile, Ala., 485 also Mobile Radio Co. WJAL, Portland, Me., Victor Radio Corp. WEAQ, Berlin, N. H., Y. DL C. A. WJAM, Cedar Rapids. Iowa, Evening Gazette. WEAR, Baltimore, Md., Bait. American & News Pub. Co. SWAN, Peoria, Ill., Peoria Star and Peoria Radio Sales Co. WEAS, Washington, D. C., The Hecht Co. WJAP, Duluth, Minn., Kelley -Duluth Co. WEAT, Tampa, Fla., John J. Fogarty. WJAQ, Topeka, Kans., Capper Publications. WEAU. Sioux City. Iowa, Davidson Bros. Co. WWAR, Providence, R. I., Tho Outlet Co., J. Samuels & Bras. WEAV., Rushville, Nebr., Sheridan Elec. Service Co. WMAS, Pittsburgh Pa.. Pittsburgh Radio Supply House. WEAW. Anderson. Ind. , Arrow Radio Lab. WJAT, Marshall. Mo.. Kelley- Vawter Jewelry Co. WEAR, Little Rock, Ark., T. J. M. Daly. WJAX, Cleveland, Ohio. 485 also Union Trust Co. W EAY, Houston, Texas, Will Horwitz, Jr. WJAZ, Chicago, Ill., Chicago Radio Lab. W EAZ, Waterloo, Iowa, Donald Redmond. W1 D, Granville, Ohio, Dennison University. - WEB, St. Louis. Mo., The Benwood Co., Inc. WJH, Washington, D. C., White & Boyer Co. WEH, Tulsa, Okla., Midland Refining Co. WJK, Toledo, Ohio, Service Radio Equipment Co. WEV, Houston, Texas. 485 also Hurlburt -Still Elec. Co. WJX. New York, N. Y., De Forest Radio Telephone & Teleg. Co. W E W, St. Louis, Mo., 485 also St. Louis Univ. WJZ. Newark. N. J., 485 also Westinghouse Elec. & Mfg. Cu. WEY, Wichita. Kansas, 485 also Cosradlo Co. W KAA, Cedar Rapids, Iowa, 485 also H. F. Paar. W FAA, Dallas, Texas, 400 and 485 also A. H. Belo & Co. WKAC, Lincoln. Neb., Star Pub. Co. WEAB, Syracuse, N. Y., C. F. Woese. WKAO, East Providence. R. I., Charles Loon. WFAC, Superior, Wis., Superior Radio Co. WKAF, Wichita Falls, Texas. W. S. Radio Supply Co. WFAO, Salina. Kans., Watson Weldon Motor Supply Co. WKAG, Louisville, Ky., Edwin T. Bruce, M. D. WFAF, Poughkeepsie, N. Y.. H. C. Spratley Radio Co. WKAH, West I'alm Beach, Fla., Planet Radio Co. WFAG, Waterford, N. Y., Radio Engineering Lab. WKAK, Okemah, Okla., Okfuskee County News. WFAH, Port Arthur. Texas. Elec. Supply Co. W KAL, Orange, Texas, Gray & Gray. WFAJ, Asheville, N. C., Iii-Grade Wireless Instrument Co. WKAM, Hastings, Neb.. Daily Tribune. WFAK, Brentwood, Mo.. Domestic Electric Co. W KAN, Montgomery. Ala., Alabama Radio Mfg. Co. WFAM, St. Cloud, Minn., 485 also Granite City Elec. Co. and Times Pub. Co W KAP, Cranston. R. I., Dutee W. Flint. WFAN, Hutchinson, Minn., 485 also Hutchinson Electric Service Co. WKAQ, San Juan, Porto Rico, Radio Corp. of Porto Rico, W FAQ, Cameron, Mo., Cameron Radio Co. and Mo. Wesleyan College. WKAK, East Lansing, Mich., Mich. Agri. College. WFAR, Sanford. Me.. Hall & Stubbs W KAS, Springfield, Mo.. L. E. Lines Music Co. WFAS, Fort Wayne, Ind., United Radio Corp. WKAV, Laconia, N. IL, Laconia Radio Club. WFAT, Sioux Falls, S. Dak. 485; also Argus -Leader. WKAW, Beloit, Wisc., Turner Cycle Co. WFAU, Boston, Mass., Edwin C. Lewis. WKAX, Bridgeport, Conn., Wm. A. MacFarlane. WFAV, Lincoln, Nebr., 485 also Univ. of Nebr. Dept. of Elec. Engineering. W KAY, Gainesville, Ga., Brcnau College. WFAW, Miami. Fla.. Daily Metropolis. WKAZ, Willies -Barre, Pa.. Landau's Music Co. WFAY, Independence, Kans., Daniels Radio Supply Co. W KC, Baltimore, Md., Jos. M. Zamoiski Co. WFAZ, Charleston, S. Carolina, S. C. Radio Shop. WKN, Memphis, Tenn., Riechman- Crosby Co. WFI, Philadelphia, Penn., 400 and 485. also Strawbridge & Clothier. WKY, Oklahoma City, Okla., 485 also Oklahoma Radio Shop. WFO. Dayton. Ohio, Rike- Kumler Co. W LZ. Fairfield, Ohio. U. S. Army. WGAB, Houston, Texas, QRV Radio Co. WLAC, Raleigh, N. C., N. C. State College/ WGAC, Brooklyn, N. Y., Orpheum Radio Stores Co. WLAO, Hastings, Nebr.. Arvanette Radio Supply Co. WGAO, Ensenada, Porto Rico, Spanish -American School of Radio- telegraphy. WLAF, Lincoln. Nebr., Johnson Radio Co. WGAH, New Haven, Conn., New Haven Elec. Co. W LAG, Minneapolis, Minn., Cutting & Walsh Radio Con,. WGAL Shenandoah, Iowa, W. H. Gass. W LA H, Syracuse, N. Y., Samuel Woodworth. WGAK, Macon, Ga., Macon Elec. Co. WLAJ, Waco, Texas, 485 also Waco Elec. Supply Co. WGAL, Lancaster, Pa., Lancaster Elec. Supply & Construetion Co. WLAK, Bellows Falls, Vt., Vermont Farm Machine Cu. W GAM, Orangeburg, S. C., Orangeburg Radio Equip. Co. WLAL, Tulsa, Okla., Tulsa Radio Co. WGAN, Pensacola, Fla., Cecil E. Lloyd. WLAM, Springfield, Ohio, Morrow Radio Co. WGAQ, Shreveport. La., Glenwood Radio Corp. WLAN. Houston, Me.. Putnam Hdwe. Co. WGAR, Fort Smith Ark., Southwest American. WLAO, Scranton, Pa., 985 also R. C. Ehrhardt and J. 11. Jones. WGAS, Chicago, HI., Ray -di -co Organization, Inc. WLAP, Louisville, Ky., W. V. Jordan. WGAT, Lincoln, Nebr., Am. Legion. Dept. of Nehr. W LAQ, Kalamazoo. Mich., A. E. Schilling. WGAU, Wooster, Ohio. Marcus G. Limb. WLAK, Marshalltown, Iowa, Meikel Music Co. WGAV, Savannah, Ga., B -H Radio Co. W LAS, Hutchinson, Kans., Hutchinson Grain Radio Cu. WGAW, Altoona. Pa.. Ernest C. Albright. WLAT, Burlington, Iowa. Radio Specialty Co. WGAX, Washington Court House, Ohio, Ohio Radio Elec. Co. WLAV, Pensacola. Fla.. Elec. Shop, Inc. WGAY. Madison, Wis., North Western Radio Co. W LA W, New York. N. Y., New York Police Dept. WGAZ, South Bend. Ind., South Bend Tribune. WLAX, Greencastle, Ind., Greencastle Community Broadcasting Station. WGF, Dea Moines, Iowa. 485, also Register and Tribune. W LAY, Fairbanks, Alaska. Northern Commercial Co. WGI, Medford Hillside, Mass., 485, also Am. Radio & Research Corp. WLAZ, Warren, Ohio. Hutton & Jones Elec. Co. WGL Philadelphia, Pa., Thos. F. J. Howlett. WLB, Minneapolis, Minn., Univ. of Minn. WGhr, Atlanta, Ga.. 400 only. Atlanta Constitution. WLK, Indianapolis, Ind.. 485 also Hamilton Mfg. Co. WGR, Buffalo, N. Y., 485 also Federal Tel. & Teleg. Co. W LW, Cincinnati, Ohio, 485 also Crosiey Mfg. Co. WGV., New Orleans, La., Interstate Elec. Co. 485 also. WMA, Anderson, Ind., Arrow Radio Lab. WGY, Schenectady. N. Y., 400 and 485 also General Elec. Co. W MAB, Oklahoma City, Okla.. Radio Supply Co. W HA, Madison. Win., 485 also Univ. of Ma. '1 W MAC, Cazenovla, N. Y., C. B. Meredith. WHAA, Iowa City, Iowa, State Univ. of Iowa. v" W MA O, Rockport, Mo., Atchlnson County Mall. WHAB, Galveston, Texas, 300, 485, 600 also Clark W. Thompson HE'eilman's Dry WMAE, Dartmouth, Mass.. Round Hills Radio Corp. Goods Co.) W MAG, Liberal, Kans., Tucker Elec. Co. WHAC. Waterloo, Iowa, Cole Bros. Elec. Co. W MA H , Lincoln, Nebr. General Supply Co. WHAO, Milwaukee. Wis., 485 also Marquette Univ. W MAL Kansas City. Mo., 485 also Drovera Telegram. WHAE, Sioux City. Iowa. Automotive Elec. Service f'o. W MAK, Lockport, N. Y.. Norton Labs. WHAF, Pittsburgh, Pa., Radio Elec. Co. W MAL, Trenton. N. J., Trenton Hdwe. Co. WHAG, Cincinnati. Ohio. Univ. of Cincinnati. W MAM, Beaumont, Texas. Beaumont Radio Equip. Co. WHAH, Joplin, Mo., John T. Griffin. W MAN, Columbus, Ohio. First Baptist Church. WHAT, Davenport, Iowa, Radio Equip. & Mfg. Co. W MAP, Easton, Pa.. Utility Battery Service. WHAT Bluefield, W. Va., Bluefield Daily Telegraph and E. K. Kitts. WMAQ, Chicago, Ill.. Chicago Daily News. WHAH, Clarksburg, W. Va.. Roberta Hdwe. Co. W MAR, Waterloo, Iowa, Waterloo Elec. Supply Co. WHAL Lansing, Mich., Lansing Capitol News. WMAT, Duluth, Minn.. Paramount Radio Corp. W HAMIM, Rochester, N. Y., Univ. of Rochester. WMAV, Auburn. Ala., Polytechnic Inst. WHAO, Savannah. Ga., Frederick A. Hill; every evening 8 to 9; Saturday nights, 12:30 WMAW, Wahpeton, N. D., Wahpeton Elec. Co. 1:30 a. m. WMAX, Ann Arbor, Mich., K. & K. Radio Supply Co. WHAP, Decatur, Ill., Dewey L. Oita. WMAY, St. Louis, Mo., Kingshighway, Presby. Church. W HAQ, Washington, D. C.. Semmes Motor Co. WMAZ, Macon. Ga.. Mercer University. WHAB, Atlantic City, N. J., Paramount Radio & Elec. Co. WMB, Auburn, Maine, Auburn Elec. Co. WHAS, Louisville, Ky., Courier Journal and Louisville Times Co. WMC, Youngstown, Ohio, Columbia Radio Co WHAV, Wilmington, Del., Wilmington Elec. Spec. Co. W M H, Cincinnati. Ohio, 485 also Precision Equipment Co. WHAW, Tampa, Fla., Pierce Elec. Co. WMU, Washington. D. C. Doubleday -Hill Electric Co. WHAY, Huntington, Ind., Huntington I'ress. W NAB, Bowling Green, Ky., Park City Daily News. WHAZ, Troy, N. Y., 400 only, Rensselaer Polytechnic hut. WRAC, Boston, Mass., Shepard Stores. WHB, Kansas City. Mo., 400 and 485 also Sweeney Auto & Tractor Schad. WNAO, Norman, Okla., Okla. Radio Engineering Co. WHO, Morgantown, W. Va.. W. Va. University. WNAF, Enld, Okla., Enld Radio Dlat. Co. W H K, Cleveland, Ohio, Warren R. Cox. WNAG, Cresco, Iowa, Rothert Radio and Elec:ric Shop. W H N, Ridgewood. N. Y., Times Printing & I'ub. Co. WNAH, Manhattan, Kans.. Manhattan Radio Supply Co. WHU Toledo. Ohio. %Vm. B. Duck Co. WNAL, Omaha. Nebr. R. J. Rockwell. WHW, East Lansing, Mich., 485 also Stuart W. Seeley. W NAN, Syracuae, N. Í'., Syracuse Radio Telephone Co. W HX, Dea Moines, Iowa, Iowa Radio Corp. WRAP. Springfield, Ohio. Wittenberg College. WIAA, Waupaca, Wis.. Waupaca Civic & Commerce Asy n. W NAQ, Charleston, S. C. Charleston Radio Elec. Co. WIAB, Rockford, Ill., Joalyn Automobile Co. WNAS, Austin, Texas. Radio Corp. WIAC, Galveston, Texas, 485 also Galveston Tribune. W NAT, Philadelphia. Pa., Lennie Bros. Co. WIAD, Ocean City. N. J.. Ocean City Yacht Club. WNAV, Knoxville, Tenn., Peoples Tel. and Tel. Co. WIAE, Vinton, Iowa, Mrs. Rohl. E. Zimmerman. WNAY, Baltimore, Md., Shlpownera' Radio Service. WIAF, New Orleans, La., Gustave A. De Carlin. W NAX, Yankton, S. D. Dakota Radio Apparatus Co. WIAH, Newton, Iowa, Continental Radio & Mfg. Co. W N A W, Fortreas Monroe, Va., Henry Kunzman. WIAI, Springfield. Mo., Heer Stores Co. W N1, Albany, N. Y., Shotton Radio Mfg. Co., Inc. WIAI Neenah, Wis., Fox River Valley Radio Supply Co. W NO, Jersey City. N. J.. Wlrelesa Telephone Co. of Hudson Co., N. J. WIAK, Ornaba. Neb.. 485 abo Daily Journal -Stockman. W OAA, Ardmore. Okla., Dr. Walter Hardy. WIAO, Milwaukee, Wia, School of Engineering. WOAC, Lima. Ohio, Maus. Radio Co. WIAP, Springfield, Mesa. Radio Development Corp. WOAE, Fremont. Nebr.. Medland College. WIAQ, Marlon, Ind., Chronicle Pub. Co. WOAF, Tyler, Texas, Tyler Commercial College. WIAR, Paducah, Ky., J. A. Rudy & Sons. WOAH, Charleaton, S. C., Palmetto Radio Corp. WIAS, Burlington, Iowa, Hawk -Eye Home Elec. Co. WOAI, San Antonio, Texas, 485 also, Southern Equip. Co. WIAT, Tarkfo, Mo., Leon T. Noel. WOAD. Parsons. Kans., Ervtng's Electrical Co. WIAU, Le Mara, Iowa. Am. Trust & Savings Bank. WOAK, Frankfort, Ky., Collins Hardware Co. WIAV. Binghamton. N. Y., N. Y. Radio Lab. WGAL, Webster Groves, Mo., YVm. E. Woods. WIAW, Saginaw, Mich., Saginaw Radio & Elec. Co. WGAN, Lawrenceburg, Tenn.. James D. Vaughan. WIAX, Lincoln, Nebr., Capitol Radio Co. WOAR. Kenosha, Wla, Henry P. Lundskow. WIAP, Washington, D. C.. Woodword & Lothrop. WIAZ, Miami, Fla., Elec. Supply Salsa Co. (Continued on next page.) 2o RADIO AGE-"THE MAGAZINE OF THE HOUR" Corrected List of U.S. Stations Alphabetically by Call Signals

W OAS, Middleton, Conn., Balle?. Radio Shop. WQAL, Mattoon, ni.. Cole County Tel. and Tel. Co. WOAT. Wilmington. Del., Boyd Martell Hamp. WQAP, Lincoln, Nebr.. Am. Radio Co. WOAD, Evansville. Ind., Sowder Bolling Piano Co. WQAQ, Abilene. Texas West Texas Radio Co. WOAV. Erle. Pa. Pa. Nat'l Guard. WQX, Chicago, Ill., Riverview Park, Walter A. KuehL W OAX, Trenton, N. J., Franklin J. Wolff. WRAA, Houston, Texas, Rice institute. WOAY, Birmingham, Ala.. John W. Wilder. WRAN, Waterloo, Iowa, Black Hawk Elec. Co. WQAQ, Portsmouth. Va.. Portsmouth Radio Aas'n. WRAU, Amarillo, Texas. Dally News. WOAZ, Stanford, Texas, Penick Hughes Co. W RAY, Scranton. Pa., Radio Salee Corp. WOC, Davenport. Iowa. 400 and 985 also Palmer School of Chiropractie. WRK, Hamilton, Ohio. Doron Bros. Elec. Co. WOE, Akron, Ohio. Buckeye Radio Service Co. WRL, Schenectady. N. Y., Union College. W O H, Indianapolis, Ind.. Hatfield Elec. Co. WRM, Urbana, Ili., Univ. of Ill. W01. Ames, Ia.. 485 also Iowa State College. W RP, Camden, N. J., Federal inst. of Radio Teig. WOK, Pine Bluff, Ark., 485 also Ark. Light & Power Co. WRR, Dallas, Texas. 985 also City of Dallas. Police and Fire Signal Dept. WOO, Philadelphia, Pa., 900 and 985 also, John Wanamaker. WRW, Tarrytown. N. Y., Koenig Bros.. Tarrytown Radio Research Lab. WOQ, Kansas City, Mo., 985 also Western Radio Co. WSAJ, Grove City, Pa., Grove City College. WOR, Newark, N. J., 900 only. L. Bamberger & Co. WSAS. Lincoln, Nebr., State of Nebr. WOS, Jefferson City, Mo., 485 also Mo. State Marketing Bureau WSAV, Houston, Texas, C. W. Vlek Radio Const'n Co. WOV, Omaha, Nebr.. R. B. Howell. WSB, Atlanta, Ga., 900 and 985 Atlanta Journal. WOU, Omaha, Nebr., Metropolitan Utllitlee. WSL, Utica, N. Y., J. & M. Elec. Co. WOZ, Richmond, Ind., 485 also Palladium Printing Co. WSN, Norfolk. Va.. Shipownere' Radio Service. WPA. Fort Worth. Texas, 485 also Fort Worth Record. WSX, Erie, Pa., Erle Radio Co. WPAA, Wahoo, Neb., Anderson & Webster Elec. Co. WSY, Birmingham, Ala., Alabama Power Co. WPAB. State College. Pa. WTAC. Johnstown. Pa., Penn. Traffic Co. WPAC, Okmulgee, Okla., Donaldson Radio Co. WTAU Tecumeeh, Neb., Ruegy Battery & Elec. Co. W PA D, Chicago, Ill., Wieboldt & Co. WTAW, College Station, Texas, Agricultural and Mechanical College of Texas. WPAF, Council Bluffs. Iowa. Peterson'e Radio Co. WTG, Manhattan. Texas, Kane. State Agri. College. WPAG, Independence, Mo., Central Radio Co. WTP, Bay City, Mich., Ra-Do Corp. WPAH, Waupaca, Wis., Wisconsin Dept. of Markets. W VP, New York. N. Y. Signal Corps. U. S. Army. WPAJ. New Haven, Conn.. Doolittle Radio Corp. WWAC. Waco. Texas, Sanger Bros. WPAK, Fargo. N. D.. North Dakota Agricultural College. W W AX, Laredo. Texas, Norman Bros. WPAL, Columbus, Ohio. Superior Radio & Tel. Equip. Co. WWB, Canton. Ohio. Daily News Printing Co. WPAM, Topeka, Kane., Awerbach & Guettel. WWI. Dearborn, Mich.. Ford Motor Co. WPAN, Houston, Texas. Levy Bros. Dry Goods Co. WWJ, Detroit. Mich.. 900 485. Evening News. WPAR, Beloit, Kans., R. A. Ward. W W L, New Orleans. La., Loyola Univ. W PAT, El Paso. Texas, St. Patrick's Cathedral. W W X, tVaeh1ngton. D. C., Post Office Dept. WPE, Kansas City, Mo., Central Radio Co. IXAD, Pawtucket, R. I., Standard Radio & Elec. Cu. WPG, New Lebanon, Ohio. 985 also Nushawa Poultry Farm. 2XAI, Newark. N. J., Westinghouse Elec. & Mfg. Co. WP1, Clearfield, Pa.. Elec. Supply Co. 2X1, New York City, A. T. & T. Co. W Pl. Philadelphia, Pa.. St. Joseph'e College. 2XJ, Deal Beach, N. J., Amer. Tel. & Teig. Co. J. WPM, Washington, D. C., Thos. Williams, Inc. Pa., Horace A. Beale, Jr. WPG. Memphis, Tenn.. United Equip. Co. 3XW, Parkersburg, WQAB. Springfield. Mo., Southwest Missouri State Teachers' College. 3YN, \Vashington, D. C., Nat'l Radio Inst. WQAK, Dubuque, Iowa, Appel -Higley Elec. Co. 9ARU, Louisville, Ky.. Darrell A. Downard.

daily forecasts of the \Weather Bureau from neighboring meteorological sta- Weather Broadcasting were broadcast from 12 stations in seven tions by telephone. Undoubtedly the By Washington Radio News Service states, principally by radio telegraphy, service could be placed on more efficient whereas on July 1, 1922, 98 stations in basis and materially extended, the RADIO telegraphy, although an thirty -five states were carrying daily Chief of the bureau states, if funds were invaluable factor for several years weather forecasts and warnings chiefly by available for telegraphing information in receiving and sending data on radio telephone. to radio stations not now included in the weather to and from ships, was not All broadcasts are sent out from system, and engaging more employes. recognized until recently as a medium for Governmental, commercial and private The value of radio -telegraphy in this the general dissemination of forecasts, stations, at no expense to the bureau. A special service has been demonstrated, writes Prof. C. F. Marvin, Chief of the special wave of 485 meters has been Professor Marvin declares, pointing out U. S. Weather Bureau, iii his report to assigned by the Department of Com- that its future usefulness "cannot be Secretary of Agriculture Wallace. merce, and to avoid interference and estimated." Farmers by the thousands The use of radio by the bureau through- duplication, only two stations in a city who do not get a forecast service by the out the country was limited because of are licensed to transmit the weather telegraph or through the daily press and the necessity of using code, he explains. information, although many others would for whom code broadcasting was of little "With the introduction of radio tele- gladly cooperate. It is estimated that use installed receiving sets during the phony, which makes it possible for any- at the end of the year twenty -five per year. They now obtain the weather fore- one to receive the message in spoken cent of the licensed broadcasting sta- casts and warnings, so important in their words, the broadcasting of information tions were engaged in distributing this occupations, as promptly as do business over the interior has increased enor- valuable meteorological information. The interests in urban communities. A great mously," he declares. A year ago the broadcasts are supplied the radio stations future increase in rural receiving stations is inevitable, the weather officials believe. Another important accomplishment in radio work during the past year was the inaguration of a program of broad- TO BROADCASTERS: casting the twice daily forecasts, cold wave, frost and other warnings and infor- Please fill out and send to Radio Age, 64 West Randolph Street, Chicago, mation issued for the states lying in the the following blank, so that your station may he accurately listed in our roster Chicago and Washington forecast dis- of broadcast stations from month to month. You will find this data is eagerly tricts. From April to November a sum- followed the costs nothing. by fans everywhere and service you mary of weather conditions as they affect For Publication. the crops during the week preceding is also included. This service began in and high Our station call letters are June, 1922. Radio -telegraphy wave- lengths are utilized, as telegraphy City State is more reliable for long range trans- mission. The radio receiving stations, Wave Length Radius equipped for high wave reception, re- ceive a direct service thereby, and local Nature of program and hours radio -phone stations are enabled to broadcast for their districts. Material extensions were also made during the year in the radio bulletin service for the benefit of marine and aviation interests. Station Owned by The Chief of the Weather Bureau is gracious in his thanks to the officials of Station Operated by the Naval Communications Service for assistance rendered. RADIO AGE-"THE MAGAZINE OF THE HOUR" 27 N. A. A. Starts in New R. P. C. Midget Radio Year "UN jig ED" Pocket Receiver NAA, the great Naval Radio Station at Variable Radio, Va., near Arlington, becomes the Government's chief broadcasting station Condensers for official information on January 3. On that date, all regular broadcasting are previously handled by NOF, the radio experimental station of the Navy at "Just about perfect" Size 1- 11-32x334x63 Anacostia, will be transferred. There- after NOF will resume its experimental Price $3.00 and research work, which may include THE R. P. C. MIDGET POCKET the broadcasting of the Navy and Marine RECEIVING SET is designed to meet Band music in the interest of modulation the wants of the novice (an oppor- tests. tunity to get acquainted with the mysteries of the RADIO ART) and A special wave length of 710 meters who, having learned the A B C of from the Government and public broad- Radio, may readily become a more -a4 serious student of this most important casting band has been assigned to NAA 4aWnr field of investigation. by Secretary Hoover on December 15, -.°._ : ec This receiver is made of the finest at the request of the Inter -Departmental material. It is mounted in a polished Radio Committee. This was done in 9f" -`' wooden case, fully equipped with a order that the several regular circuits FIXED CONDENSER for tuning. It of the Army and Navy located there may has a range of approximately 25 miles of clear, distinctive receiving. be operated simultaneously without inter- ference which occurred when phone THE R. P. C. MIDGET is truly the wonder of the age in size, price and broadcasting was undertaken on the quality. Not a mere toy but a scien- lower governmental wave lengths from tifically built Crystal receiving set the main antenna. comparing favorably with many higher priced seta on the market. The new radiophone transmitting set Without head phones, $3.00 post- was especially made for NAA at the In outward beauty -with clean - paid everywhere. Naval Radio Laboratory at Anacostia. eut hard aluminum plates, ebony It is based on the master oscillator, Bakelite ends, highly finished nickel- Discount to Jobbers and Dealers ed parts and, in the "beautiful" power- amplifier system, and employs work they do-"United" Conden- Radio Products Corporation six 250 watt tubes, giving an output of sers are as near 100% good as can of America 1 1 -2 K. W. The apparatus is arranged be imagined. so that the waves from 400 to 2,200 55 Broadway, New York, U. S. A. meters can be used in transmitting Vernier Type and the power is derived from a 2 K.W., Only Vernier with Stop-complete generator. When transmitting on 710 with knob and dial; postpaid: meters, a 46 plate __._.$6.50 26 plate $5.50 Edeson Radio Phones 3000 01IMS special single wire antenna Adustable Diaphragm Clearance R stretched from the top of one of the 400 Plain Type We guarantee satisfaction. or your money /$3w± foot towers is used. This new circuit phone. o. The feature places . (Without vernier, dial or knob) phono onayr with the world'swurld's ¢ro makes. 2ócs does not interfere with any of the other Our sales plan eliminates driers ploba and POST. I bad arc 43 $4.50 5 from hence the low pria circuits although used simultaneously. plate plate._...$2.75 Better phones cannot be made. Immediate 23 plate 4.00 3 plate.___ 2.25 delmenes Double 0. ohm sets. 33.98; 1300 The height of the antenna gives practi- Ohm single sm. fÁ50. Circular free. 11 plate 3.50 Postpaid practically the same efficiency as the low - Edeson Phone Co. 6 Bead St-Dept r Bo ó a55 lying, multiple -tuned antenna used at Anascostia. "UNITED" CLASSIFIED ADVERTISEMENTS When transmitting on the high -wave length, 2,050 meters, the large antenna Audio Frequency Six cents per word per insertion, in ad Name and address must be counted. Each initial counts will be used and other circuits will be as one word. Copy must be received by the 19th of Transformer month for succeeding month's issue. interrupted temporarily. The design of this special set will permit of excellent HELP WANTED. modulation for the sending of speech and even music, Naval radio engineers Meo-Women -Glrie over 17 wanted. U. B. Oovernmeo t steady positions. $100 to 3195 month. Quick sure raise. say. Paid vacation. Short hours. Common education sufficient. Experience unnecessary. Write immediately for free list of Transmitting ranges will vary with positions now open. Franklin Institute, Dept. Mill. Rochester, N. Y. the season and in the day and night, but it is expected that a range of several SALESMEN. thousand miles can be attained in night Salesmen that have been or are calling on electrical time transmission during the winter nr radio trade, see Mr. Rice. 6311 N. Clark St., Chicago. months, although this may fall off in PUBLICATIONS. the day time sending during the summer months to a 250 miles radius. RADIO MANUAL, everything the beginner should know. How to build and operate an inexpensive receiv- ing set. Sixty -four pages, thirty illu ions. Twenty Recent broadcasts of the President's "Staple as Wheat" in the radio cents. Postpaid. Raydio Publishing Company, Caxton industry. . Magnetically shielded, Building, Cleveland. Ohio. congressional address are reported to have been heard as far west as Chicago in a shell of original design and finish beautiful piece of work- FOR SALE and Detroit, which speaks well for the -a Ratio 5 to 1. Insures work of NOF on 427 meters. Basically manship. I have nine Federal Jr. crystal sets. List 325. Will sell loud clear signals. Fully mounted. lot for $100. J. M. C. Care RADIO AGE. the new set for Arlington is built up on the results of radio -telephone broad- Price postpaid. . $4.50 CRYSTALS casting experiments conducted from Mfg. & Distributing Co. TESTED GALENA CRYSTALS from our own mines Anacostia and a knowledge gained from United shaped and tested at the mine in best standard hookup 536 Lake Shore Drive, Chicago. -direct to user. A real crystal-not pinhead. Twen- the operation of the well -known set at ty-five cents postpaid. five for $1.00 to group buyers. Ogark Crystal Co, Box 1. Morrellton. Me. NOF. 28 RADIO AGE -"THE MAGAZINE OF THE HOUR" Crystal Sets Hold On no batteries to re- charge, no tubes in the neighborhood of $25.00, to be bought - There is a movement, particularly and if he is satisfied the variometer being built into the with receiving the nearby stations, set and two binding posts provided in large centers of population, his set toward the use of crystal sets in should cost him practically for different antenna lengths. The nothing for upkeep. $15.00 sets do not, as a rule, have preference to vacuum tube sets. On subject In the case of the vacuum tube the of crystal sets, it any other adjustment than the should be noted that there are on the tapped coil. The buyer should set, radio fans are familiar with all market the difficulties that are encountered. crystal sets with a wave select one with a wave length of at length range from 180 to 3,000 least 2,000 meters, otherwise, this When either the "A" battery or the meters. "B" runs down, there is Most of the old type sets winter, he will not be able to get battery have a wave 150 trouble and the trouble is not so length range of to broadcasting at a higher wave easy for to find. When only 800 meters and some even as length. the amateur low as 500 As tubes burn out, there is additional meters. soon as Con- gress passes the new law recom- expense-and just before they burn mended What Hoover Says out, there is a great deal of distor- by the Radio Board, broad- casting will be done on much higher Radio Needs tion, which prevents the hearer (Continued from page 15.) from receiving a perfect rendition of wave lengths and several stations can be operated in the same locality radio wave lengths, especially those what is going on at the broadcasting used between ship and shore sta- station. at the same time, so that a good crystal a tions, is pointed out by Secretary In the case of the crystal set, how- set should have wave length range at least going up to Hoover in his report, attention being ever, the buyer makes his purchase called to the fact that the last con- for $15.00 or strings up his 2,000 meters and will be able to $25.00, receive the broadcasted material ference was in 1912 when the United aerial, connects his ground lead, ad- States had but one trans -oceanic justs the crystal and immediately which will undoubtedly be sent on higher wave lengths than the 360 station in operation. This matter, is able to "listen in." While it is however, has the attention of the true 25 meter wave length, to which they that greater distance than were formerly restricted. State Department, which is now to 50 miles in not obtainable, never- organizing the personnel of a repre- theless, which is over the Most crystal sets do not have a that heard variable condenser and sentative governmental committee crystal set is an absolutely faithful this should be compensated for by having two to draw up agenda for the next and actual rendition of the voice or international convention on electri- music the broadcasting station. binding posts on the crystal set, one at for long antenna and one for short cal communication to be held at There is no oscillation, squeaking or Paris next spring. is antenna. The former should have squealing, which so characteristic an antenna condenser connected in In summing up Mr. Hoover says: of regenerative tube sets. "To close an efficient adminis- Many radio enthusiasts have sev- series with the aerial lead. In fact, a variable condenser does not give tration of the radio service is impera- eral types of sets in their homes and tive if we are to maintain its effici- impor- maximum efficiency in a crystal set. it is often a fact that when an prefer- ency as a life- saving agency on ship- tant speech or symphony concert is Tapped coils are usually able to sliding tuners, as sliding board, a means of commercial com- being broadcast from a station 25 to munication, and of instruction and 50 miles from the operator's home, tuners frequently wear out or be- come short circuited. A tapped entertainment for our people. To the operator connects up his crystal perform this work we must have an set rather than the vacuum tube set. coil set is a life long investment. With two binding posts, one for experienced and expert personnel. With a good pair of telephones to To secure and retain such men the his ears and with a good make of long antenna and one for short antenna, the operator will be able service must be provided with ade- crystal set, the operator can hear quate funds to meet the increasing perfect exactness the tone quality of to accommodate his set to the con- ditions possibly limited and to demands of commercial enterprises_ music with all its beautiful shadings for qualified men." or he can hear the voice intonations which his antenna can be erected. There are good crystal on and enunciation of the speaker in a sets the Send $1.00 to Radio Age, 64 W. Ran- manner quite unobtainable with market embodying these features dolph Street, Chicago, and receive tube reception. with a tapped coil and variometer this middle -west radio periodical adjustment for fine tuning. With for six months. Regular subscrip- All this costs him no more than the variometer, the price is usually tion price is $2.50 a year. $15.00 to $25.00 for a complete out- fit, including antenna equipment and telephones. There are no re- placements. nothing to wear out, This Coupon and $2 Cut this out and send to Radio Age, 64 West Randolph Street, Chicago, Ill., and Artistic Variometer Parts receive this magazine for one year. The regular subscription price is $2.50 per year. Wholesale Only RADIO AGE, 64 West Randolph Street, Chicago.

Enclosed find 62 for which please send me Radio Age for one year. Name_

Variocouplera, Street No. Rotors, Winding Forma, Stators, in Genuine Mahogany. City_ Quick Deliveries. Write for prices. Sartíztíc &Boob Zurníng Ullorbus State 517 No. Halsted Street, Chicago, Illinois RADIO AGE -"THE MAGAZINE OF THE HOUR" 29

comprising the medical staff of the radio service of the United Fruit Com- Radio at Sea United Fruit Company and its subsi- pany and subsidiary companies. The United Fruit Company announces diaries are thoroughly qualified, but in the inaguration of a ree medical radio view of the fact that radio medical service from its hospitals in the various For reliable and up- to -dats Information on rafts advice to ships at sea is given free and read countries of Central America and from without an opportunity for a personal its passenger ships to all ships at sea. examination of the patients by them no RADIO AGE So, far as the United Fruit Company For prompt and efficient service place your order responsibility will be assumed by either with repreeentativee of the Periodical Sales Co.. and its subsidiary companies are con- the company and its subsidiaries or whose authority and responsibility le assured by the credentials ln their possession bearing the registered cerned, this service is available without physicians or surgeons giving the advice trade -mark of the Periodical Sales Co.. facsimile ef charge to ships of all nationalities as to its accuracy or for error in the which Is reproduced hereon. the following radio stations PERIODICAL SALES CO., Inc. through receipt or transmission of any message 538 South Dearborn Street. chitaoo. ninon operated by the United Fruit Company sent or received in connection therewith. Telegraph Com- Branch Offices Branch Offices or the Tropical Radio It is requested that when sending medical PHILADELPHIA MILWAUKEE pany: advice radiograms radio operators check MINNEAPOLIS DETROIT For ships' call letters see International them "(number of words) DH Medico." INDIANAPOLIS CLEVELAND Radio Call Letter List or List of Radio DENVER BOSTON "DH Medico" radiograms will be given NEW YORK NEW ORLEANS Stations of the United States. preference over all other radiograms, BUFFALO Y ECONOMY TORONTO Radiograms requesting medical advice LOS ANGELES Trade Mark CANADA excepting SOS calls, should be signed by the captain of the throughout the ship and should state briefly, but clearly, !IIIIIIIIIIIIIIIIIIIIIIII1111111111111111111111111111111 IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII; the symptoms of the person afflicted. Such radiograms should be addressed "Unifruitco" (name of place) and may be sent to any of the United Fruit Company's hospitals listed below: "ALL AMERICAN" Santa Marta, Colombia. Port Limon, Costa Rica. Almirante, Panama. Amplifying Transformers Tela, Honduras. Puerto Castilla, Honduras. Puerto Barrios, Guatemala. Give power-range- tone -quality. All United Fruit Company passenger fine of steamships carry doctors, and free Scientifically correct; examples workmanship medical service may be procured by and finish. radio from any of them by a radiogram addressed "Ship's Doctor," followed by the name of the steamship. This free medical service is established, primarily, for the benefit of ships not carrying doctors. However, should occasion re- quire, ships' doctors may hold consulta- tion by radio with the United Fruit Company ships' doctors and hospital staffs. The physicians and surgeons

ADIO FREG, :TRANSFO ISO-550M AULAND Reinartz! Gty1CAG Make this astoundingly popular new receiving set at small cost and get a

New Radio Kick AUDIO FREQUENCY RADIO FREQUENCY Our booklet with full instructions TRANSFORMER TRANSFORMER clearly illustrated, will be on sale in a few days. ORDER YOURS NOW R10, Radio Frequency (150 -550 meter wave lengths) - $4.50 Thousands of fans are using these R12, Audio Frequency (Ratio 3 to 1) - - 4.50 home made distance- wreckers. Text and illustrations by R13, Audio Frequency (Ratio 10 to 1) - - 4.75 FRANK D. PEARNE, R21, Audio Frequency (Ratio 5 to 1) - - 9.75 Chief Instructor in Electricity at Say "ALL- AMERICAN or nothing" to your dealer. Send Lane Technical High School, Chicago, for Bulletin 22 -Tells the truth about amplification and and Technical Editor of Radio Age. how to get it 100%. Send 50 Cents in Currency, Money Order or Check to 1?AUIAND NG.Co. R adio Age AMÉ 64 West Randolph St. 35 Sc. Dearborn St., Chicago, I ii. CHICAGO, ILL.

.IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIi- 30 RADIO AGE -"THE MAGAZINE OF THE HOUR" Description for a Loading Coil for Simple Set LOUD SPEAKER (Continued from page 1'.) -O The Plan -Phone is thus entirely disconnected from the 3 is the most amaz- binding posts ___ -__ ..... _-- _- __...... 0.95 ing value of any Radio receiving set and should be removed some Wood for panel and base...... _ Loud Speaker on the market. Re- distance from it. The operation of the Paraffin_ :._:.. markable acoustics. Used with any receiving set is then exactly saine as set. Fits the Total 2 stage amplifier receiving described in Circular No. 120. In order any receiver. Made of statuary bronze - handsome. durable. Special insulating to receive messages transmitted at wave device. Nothing half so good at sever- frequencies less than 500 kilocycles per Fixed Condenser for al times the price. Ask your dealer to second (wave lengths over 600 meters) show it. Mfd. and guaranteed. Simple Sets the loading coil is again connected as (Continued from page 11.) $3.50 sent prepaid if your dealer can't supply you. shown in Fig. IA and the switches on the shunt condenser has a capacity of ap- loading coil panel are adjusted so that the proximately 0.0015 microfarad (1500 The Planet Radio proper number of turns is included in the micromicrofarads). circuit. The switches on the panel of Approximate Cost of Parts. Loud Speaker the original receiving set are set so that Series -Antenna each $40 00 they include all the wire on the coil, Condenser. Price 2 metal (copper, (i. e., set switch arm Y on contact point strips brass or aluminum) $0.10 10 and switch arm V on contact point 8, 3 sheets of mica (if used).____ Fig. 1A. See also Fig. 3, p. 10, Circular .20 1 -post No. 120). The switch D on the loading binding (any type)._ _ .10 6 wood- screws .10 coil panel is set to the extreme left on 2 small wooden contact O, and the switch arm C is rotated slowly over its entire range. If signals Paraffin__ Paper_ .... __ are not heard, the switch arm D is set .... on the next contact to the right and the Total_;- $0.50 switch arm C is again rotated over all of its contacts. If the signals are still not Telephone -Shunt Condenser. heard, the switch arm D is placed on the About 40 sq. inches of heavy tin -foil $0.25 contact to the extreme right and the 2 screws for mounting condenser...._.. .05 switch C again rotated over its contacts. 2 small pieces of heavy cardboard or Weight 2% Ib., 11 in. high, Bell diem. When the transmitting station is heard, thin wood_ 6 in. Perfect Sound Reproduction the signals may be improved by adjust- Pa ra ffi n._..t The Planet Loud Speaker marks the most ing the right -hand switrh arm V of the Paper advanced step in the perfection of Receiving original receiving set, and the same time Radio Broadcasting. Radio exerts. "fans" and dealers, all are amazed at the remarkable changing slightly the setting' of the Total $0.30 fidelity with which the PLANET fills a switch arm C. room with the exact tonal qualities of the human voice, musical instruments, etc. Use With Two -Circuit Set. The PLANET is a complete unit. Like a The loading coil as described herein has thing of magic it transforme the ordinary 2 adio Nedtr stage amplifier receiving set into a wonderful been found quite satisfactory in extend- musical instrument. Beautiful design, ing single - richly finished mahogany case and polished the wave length range of the emitter with gold or aluminum finish, make circuit receiving set. The experimenter Var{ned Nen the PLANET an ornamental attraction to may be interested to try various ways in any home. Loud, distinct, clear reproduc- rp--Radio is sweeping the country like wild fire. tion. Price $40 00. which to extend the wave length range of Thousands of dollars are being spent for expensive outfits. RADIO EXPERTS are needed the two -circuit set. For the general everywhere this uipmmt in order and to The Planet Power guidance of the experimenter, the follow- sell and install nwoutfits p ing methods will give results, with vary- Be a Radio Expert easily Amplifier ing degrees satisfaction : Use of the I will train you quickly and in your upare of time, to become a IRADIO EXPERT so you can in- An loading coil in one of the two circuits and stall. construct, repair and sell Radio equipment. I essential unit am a Graduate Electrical Engineer and from for receiving sets no loading in the other (this means that actual experience I will give you exactly what you that do not pro- one of the circuits will not be tuned to the must know to make the really big money in radio. duce sufficient FREEMy Consultation Service to you is volume. Con- wave); use of loading coil in the primary, FREE. This outside belp which I structed so that gladly give you is, in itself , either a five -watt together with a fixed condenser (See more than the small cost of the Complete ourse. power tube or Bureau of Standards article in this issue) START NOW amplifying tube Don't let others beat you to the big money_ Start can be used de- in parallel with the variable condenser; now and within a faw weeks' time I will train you upon at home at an amazingly low cost, to become pending the use of loading coil in one of the two RADIO ÊXPERT. Write.for "Radlo Facts" volume desired. Price $27.50 sent free without obligation. An article of the (without tube) circuits and winding more wire on the highest grade. It coil in the other circuit. A. G. MOHAUPT, Electrical Engineer is equipped with special units found in no American Electrical Association other ampliper. With the Planet Amplifier Cost. 0,0. Ei, 4511 Han.wNJ Ais. CNc1ZI. you can greatly increase your volume with- Approximate out distortion. Every detail of construction The parts listed below are those used in shows the highest grade workmanship and loading coil. The receiving set parts materials. the DISTRIBUTORS are listed in Circular No. 120. The two RADIO MAILING LISTS BOSTON- Beaudette & Graham Co., 915 sets of parts constitute a complete receiv- 10,975 Radio Dealers covering II. S. by states Boylston St. per M _ -_1 7 50 BALTIMORE -Jones Elec. & Radio Mfg. Co.. ing equipment which has a rather wide 1.320 Radio klfgra. covering U. S. by states 118-20 E. Lexington St. range of wave frequencies as explained per liez ._ ...-._ 12.50 DETROIT-B. E. Polczyneki & Co., 304 Capitol 1,325 Radio Supply Jobbers covering II. 8. Theatre Bldg. in the first part of this circular. The ap- by States per list .- 12.50 GRAND RAPIDS. MICHIGAN- Wolverine Elec. 260 Radio Stations per Ust 4.00 Corp.. 21 Division St. proximate cost of the complete equipment 257 Mfgrs. who make and assemble com- KANSAS CITY, MISSOURI- Western Radio plete Radio sets per ____ 9.00 Co.. 6 W. 14th St. is therefore the sum of the amount 25,000 Radio Amateurs & Managers of Radio PEORIA -Diamond Elec. Sup. Co. in Stations per M ___ 7.50 ST. LOUIS -The McGraw Co.. 2018 Locust St. given below and the amount given 3,000 Radio Amateurs & Managersof Radio NEW YORK CITY -Harold M. Schwab, Inc., No. 120. Stations In Canada per M..____, 7.50 419 W. 42nd St. Circular 20 Ra,Uo Dlenufacturrrs In Canada per list.. 1.50 NEWARK, NEW JERSEY -General Mdse. Co., 5 Ounces No. 28 copper wire, double 87 Radio Supply Jobbers In Canada per 142 Market St. list _ ._ 2.50 cotton covered._.. $0.80 131 Retail Radio Dealers In Canada per Ilet 8 00 Planet Radio Corporation 2 battery clips .20 125 Ware. & Jobbers & Retail Dealers In England per list -- 4.00 Dept. MI 2 switch knobs and blades, complete 1.00 Ready to and on receipt of remittance. 1223 S. Wabash Ave. Chicago, Ill. TRADE CIRCULAR ADDRESSING CO. 14 switch contacts, nuts and washers 0.60 166 W. Adams Street, Chicago. 1 cardboard box (5 3 -8° dia. x8° long) kADIO AGE -"THE MAGAZINE OF THE HOUR" 31 LertifkatedElectrical Expewt You, Too, Can Learn to Boss This Job

EARN $3500 to $10000 a Year Trained "Electrical Experts" are in great the most simple. thorough, and successful Electrical Materials and Measuring Instruments absolutely Course in existence, and offers every man, regard- FREE. I also furnish them with all supplies, in- demand at the highest salaries, and the less of age. education, or previous experience, the cluding examination paper, and many other things opportunities for advancement and a big success in chance to become, in a very short time, an "Elec- that other schools don't furnish. You do PRAC- this line are the greatest ever known. trical Expert." able to make from $70 to $200 a TICAL work -AT HOME with this Outfit. You "Electrical Experts" earn $70 to $200 a week. week. start right in after the first few lessons to WORK Fit yourself for one of these big AT YOUR PROFESSION in a practical way. paying positions. In my twenty Some Features of I Give You a Real years of Electrical Engineering I My Course That Training Get Started Now - have gathered some wonderful and interesting facts about this reat Make SUCCESS As Chief Engineer of the Mail Coupon industry - "Vital Facts." Igwill send them to you free. Certain Chicago Engineering Works, I want to send you the "Vital Facts" of the L PracticalMoney-Mak- I know exactly the kind of training Electrical Industry including my Electrical ing Instruction-no a man needs to get the best posi- Book, Proof Lessons, and a sample of my guaran- useless, high-sound- tions at the highest salaries. Hun- tee bond all FREE. These cost you nothing and Learn at Home to ing theory. dreds of my students are now you'll enjoy them. Make the start today for a 2. Free Electrical Outfit. earning $3,500 to $10,000 a year. bright future in Electricity. Send in the coupon Earn $12.00 to -Finest outfit ever Many are successful ELECTRI- -NOW. sent out for home CAL CONTRACTORS. $30.00 a Day experiment and L. L. COOKE, Chief Engineer Today even the ordinary El ec- practical use. 3. Free Employment Ser- Your Satisfaction Chicago Engineering Works trician - the "screw driver" vice. (Helps you get Dept.1689 2150 Lawrence Ave., Chicago kind - is making money - big a good job.) Guaranteed money. But it's the trained man 4. Free Consulting Ser- -the man who knows the whys vice. (No chance to So sure am I that you can Use this Free Outfit Coupon! and wherefores of Electricity - get stuck on any- the "Electrical Expert" - who is thing, while study- learn Electricity -so sure am picked out to boss" ordinary ing or afterward.) I that after studying with me. you L. L. COOKE, Chief Engineer, Chicago Engineering Works, Dept. Electricians - to boss Big Jobs - 5. Free Engineering too. can get into the "big money" 1689 the jobs that pay. You, too, can Magazine. class in electrical work that I will 2150 Lawrence Ave.. Chicago. !IL guarantee to learn to fill one of these jobs - 6. Free use of my Elec- under bond return Dear Sir: -Send at once the "Vital Facts" spare -time only is needed. Be an trical Laboratory. every single penny paid me in your Big Book, have finished containing Sample Lessons, Electrical Expert" -Earn $70 to 7. Extra Courses Free - tuition if. when you and full particulars of your Free Outfit and $200 a week. Radio- Electrical my course, you are not satisfied it Home Study Course -all fully prepaid. with- Drafting. was the best investment you ever out obligation on my part. 8. Spare Time Work - made. Special earn-while- Age or Lack of Expe- you -learn lessons. Name 9. Reduced prices on all FREE- Electrical rience No Draw mack Electrical Suppl ies. Address. 10. Cash Refund Guaran- Working Outfit You don't have to be a College tee Bond. Man; you don't have to be a These features are -FREE City and State High School graduate. If you can all explained in my I give each student a Splen- read and write English, my course tig Free Bock. Age will make you a big success. It is did Outfit of Electrical Tools, J ?he`Çooké Trained Man is the `Big Pay'Man Please Mention "Radio Age" when Replying to Advertisers 32 RADIO AGE-"THE-MAGAZINE OF THE HOUR"

3000 OHM SETS, $4-50 500,000 At Radio Wedding 2000 OHM SETS, $4.00 1000 OHM SETS, $3.50 AN UNIQUE wedding cere- electrical exposition could see a Pius 20c for Postage and Insurance. Satisfaction Guaranteed or Money Back. mony was performed when man speaking and hear his ad- George Albert Carver, of dress by radio at the same time. Swissvale, Pa., and Miss Bertha This unique arrangement was Annie McNIunn, of Pitcairn, Pa., what made the wedding a history- were married recently in an es- making event. Nothing like it had pecially constructed glass radio ever been done before and, of booth during the Pittsburgh Elec- course, it attracted an enormous trical Exposition at Motor Square crowd. Garden, Pittsburgh. As the bridal party entered the The occasion was the first time booth on the night of the wedding, on record that a couple were the KDKA orchestra, sitting' in married by radio, and the wedding the broadcasting studio nine miles We mail phones the day your order arrives. Every pair tested, matched, and guaran- was witnessed by one of the largest away, started the wedding march. teed as sensitive as $8 to $10 phones. We The strains of this beautiful music have no agents or dealers. By ordering assemblages that ever attended direct you save dealer's profits -circular such an event, for, in addition to came in clearly through the loud free. the 10,000 persons who attended speakers in the exposition hall. TOWER MFG. CO., Brookling, Mass. 22 Station St. the electrical exposition to see and The minister then took his hear the public ceremony, several place with his back towards the thousand more "listened in" on crowd assembled below and, with radio receivers. the bride and groom and their EFFICIENT their It is difficult to estimate the attendants grouped on either side exact number of "wedding guests" of the transmitter, the ceremony but it is certain that at least started. 500,000 persons "attended," if not It was soon finished, but during in person, at least by car, the the brief form not a sound was wedding of Mr. and Mrs.' Carver, made by the 10,000 or more per- which was performed by the Rev. sons who had assembled to witness J. Hankey Colclaugh, pastor of it. The glass booth was the object the Pitcairn, Pa., Presbyterian of all eyes and the loud speakers Church. the only audible sound. HERE'S THE CLIFTON DETECTOR The wedding was a part of an There was something weird Why not get something worth while? electrical exposition held in Pitts- about the whole ceremony. Spread- 1. Crystals and contact points sealed in duatproof container. burgh, in November. News of ing out above the audience were 2. No oatwhiskore. 3. Bimple to operate. the radiophone wedding ceremony the rows of brightly lighted booths. 4. No replacements. To a b. First cost -last cost. had been broadcasted for weeks the rear was completely Write at once for the detector extraordinary. before and also had appeared in equipped electrical home, shining 31.50 Postpaid all the Pittsburgh newspapers. in its newness. Directly in front THE CLIFTON MANUFACTURING CO. As a result, when the couple, with was an electric fountain, playing NEWARK, NEW JERSEY their attendants and parents, ap- its myriads of flashing lights and (Dealers write for proposition) peared at Motor Square Garden changing colors upon the scene. for the ceremony they found the The whole picture was shortlived large hall packed with an eager but wonderful while it lasted. throng and many thousands clam- Directly the ceremony was over, oring vainly for admission. the bride and groom bowed and Look The ceremony was held in an then dashed from the booth to Spider Web Inductance especially constructed sound -proof start their honeymoon journey. glass booth, which, as the illus- As a wedding gift, the exhibitors and Discs at the electrical exposition gave that give the wonderful results as described in tration shows, permitted an un- Radio Age. obstructed view of the ceremony. the couple every domestic elec- Inductance wound complete $2.00 appliance possible use in Disc Only ...... 50 This glass booth contained a radio- trical to Diagram for connections free with order. phone pick -up connected by direct a home. More than $1,200 worth We are manufacturers of Storage Batteries for of electrical appliances, which in- Radio A and B circuit. telephone line with the powerful Westinghouse radiophone station, cluded among other things, an KDKA, at East Pittsburgh, about electric range, a dishwasher, table nine miles away. In this manner, lamp, desk lamp, iron, hotplate, words spoken in the glass booth vacuum sweeper, toaster, washer, were broadcasted by the KDKA toaster stove, table stove, waffle broadcasting apparatus. iron, curling iron, cup heater, A large receiver was also in- and other suitable gifts, were Write for Prices stalled in a hotel across the street placed in a special booth and INTERNATIONAL BATTERY CO. Motor Sqaure Garden, and delivered to the couple after the 112 Loua, Street, N. W. from Grand Rapids, Mich. to this was attached in parallel a ceremony. number of loud speakers. This picked -up the mes- Send $1.00 to Radio Age, 64-W. Ran- radio receiver Send$1.00 to Radio Age, 64 W. Ran- dolph Street, Chicago, and receive sage broadcasted from KDKA and dolph Street, Chicago, and receive this middle -west radio periodical the loud speakers multiplied its this middle -west radio periodical for six months. Regular subscrip- volume ins de the hall. By this for six months. Regular subscrip- tion price is $2.50 a year. arrangement, the audience at the tion price is $2.50 a year. "SENSITONE » i DOWN AND $10.00 Regenerativeg r PER MONTH Radio Receiving Set Immediate Shipment Manufactured under Armstrong License, U. S. patent No. 1,113,149 and pending letters of patent No. 807,388. READ THESE TESTIMONIALS ! Seaton, Ills., December 22, 1922. Chicago, Ills. Newark, N. Y. Harold R. Waken Co. Atlanta, Ga. Detroit, Alich. Chicago, Ills. Minneapolis, Minn. Dear Sirs: I did not go to bed until 3 a. m. next morning. Certainly Following is a report of the different stations I received on is a fine machine. Hope to add Amplifiers and Loud Speaker the Sensitone Detector, and all came in very clear, on the 21st. in near -future. I am getting stations that other radio bugs Ft. Worth, Texas Memphis, Tennessee. bere in town don't get. 12 radio sets in town at present. 400 Davenport, Iowa. Dallas, 'Texas. population, and lots of bugs here. You can use my name if you Cincinnati, Ohio. St. Louis, Mo. choose. Indianapolis, Ind. Louisville, Ky. Yours truly, Pittsburg, Pa. Schenectady, N. Y. D. L. IIAIST, Kansas City, Mo. Denver, Colo. Telegrapher, M. & S. '1'. L. It. It. Seaton, Ills.

Harold R. Waken and Co.. and 1 am eure there was lots of it yesterday, as it war. Der ember 13. 1922. 9:411 p. m. Chicago. very warm, and we had a lighting storm aleo. DB 841. 49 Collect NL.. Lubbook To 13 & Co.. Chicago. Dear I listened St. Louis Poet -Dispatch for over Harold R. Wakem Ill. Sirs' in to the In answering Queries relative distance Last night was the first night that I tried my gourd- an hour, as their concert was fine, and everything wen performance tone, and here are some of the stations that I beard clear. Yesterday afternoon at three I heard Houston, be explicit without fear quote this telegram first night's Tex., very well. program included Detroit News. Drake Hotel. Chicago. very well: Houston. Team; Denton, Texas; Fort Kansas City, Davenport, Atlanta. Paducah, Ky., Lon North. Texas, St. Louie: Dallas News: Cincinnati: Detroit is a mighty long distance frorn hero. no f Angelo,. San Antonio. Houston. Ft. Worth, Oklahoma Atlanta Journal, Detroit News. consider your set a marvel. or City, entire rotten, cattle, hog, sheep markets from I heard ever so many others. that I lust tuned in With all good wishes f or the romiag Ronson I hog Kansas City. Two p. m.: la moro than satisfactory out as they interested me or not. Now. don't you think to remain Yours sincerely, with thirty foot atrial. W. H. WARD. Theriot, that'. a good start for a green beginner, According Louisiana. December Ui, 1'J23. to what I have read I am living in tho "Lome" of etatia. raw. JOS. J. BOUDREAUX.

HAROLD R. WAKEM & CO., ONLY 500 SETS SOLD ON 900 W. Washington Blvd., Chicago, Ill. Enclosed you will find 815.00 as first payment, upon receipt of which THE EASY -PAY PLAN you will send me your complete Semitone Radio Receiving Set. as des- cribed above. After I have used the set for thirty days, I agree to send We are making this rather costly investment in order you 810.00 and the same amount every thirty days thereafter, until the to get 500 sets in the hands of that number of influential full purchase price of 805 is paid. This set is to remain the property of families, so that, when we put our goods in the hands Harold R. Wakem & Co. until payments are completed. of dealers, they may have enthusiastic SENSITONE boosters nearby to whom they can refer their future I Signed prospective buyers. Street address..._...._ Fill out the coupon, attach check or money order for City 315.00. Set will be shipped at once by express. Those In the spaces below give the names of two re'eren:es, (bunks or business who delay will be too late. houses preferred). Harold R. Wakem 80 Co. Name and Address._ 900 Washington Blvd. CHICAGO Name and Address

Tell 'em You Saw It In "Radio Age" Burgess, the Radio Battery construction fully patented When you buy a Burgess "B" est cost per hour of service. It Battery you get more than long means long shelf life and high- life, noiselessness, high capacity est current capacity. It means and moderate price. You get that Burgess "B" Batteries are also Burgess special radio con- the best radio batteries it is struction, perfected by wireless possible to produce. Don't take our word for it -ask any radio specialists and fully patented! engineer. This exclusive radio construc- Leading manufacturers of radio tion is found in no other battery equipment specify "Burgess." Burgess on the market to -day. "B" Batteries are handled by all pro- 'What does this mean to users gressive jobbers and dealers. "Look means for the Black and White Stripes." of radio batteries? It And if your dealer . doesn't handle clear receiving. It means low- Burgess "B," just address: BURGESS BATTERY COMPANY Engineers -Dry Batteries Manufacturers Offices and Warehouses at: CHICAGO, ILL., 111 W. Monroe St. NEW YORK, N. Y., 50 Church St. BOSTON, MASS., 136 Federal St. ST. PAUL, MINN., 2362 University Ave. KANSAS CITY, MO., 2109 Grand Ave. MADISON, WIS., Main and Brearly Sts. In Canada: BURGESS BATTERIES, Ltd. Winnipeg, Toronto, Montreal BURGESS "ß" BATTERIES

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