Evening Star Newspaper, February 6, 1927, Page 39

" ENGINEERS EXPLAIN 00D RADIO SIGNALS . Signals From Schenectady, Inaudible 200 Miles Away, Heard in Australia. Sy the Associated Press. SCHENECTADY, N. Y., February 5. ~-Radio sighals broadeast by the Gen- eral Electric Co. on a wave length of 9 meters were heard and copied | 100 per cent accuracy by an alian listener, 11,400 miles aw but were inaudible 200 miles from this ity, according to & report made public | oday by engineers of the company. | Afier a sacies of tests on volee and | telegraph signars on e lengths of 82.79. 65.16, 109 and 140 meters, the engineers charge have deduced that: Channels comprising wave lengths shorter than those of the §6.3 to 75 meter channel will not give economical service at points within 100 miles of the transmitter. in | lengthe to increase their power gradually, it i revealed by a recent analysis of the 710 active stations. In the past year | the ‘number of 5-KW stations was nearly doubled; 10-KW jtations jump- ed from one to seven; 20-KW trans mitters increased by four an one 50- KW broadcaster w the 1,000-watters increased from 48 to 73. 'Today there are onme 50-KW statlons, four of 20 KW, seven 10 KWs, one 6 KWs and 33 rated at & KWs, It is not alone in this country that | power is going up; in reported that Langenbur; KWs on 468 meters; War: on 1,050 metefs, and Ludwigshaven, 20 KWs. Proposed [ncreases are re- ported from Herogssirand to 100 KWs, Leningrad, 10 KWs, and Mos: cow, 50 KWs. In fact, here a “battle royal” in the ether is anticipated, when the larger stations will vie with each | other for the control of the w ssigned by the Geneva radio conference. They may remain on the channels assigned them, but prac tically all will jump their power, Which might result in nullifying the agree- ment, it is reported, due to increased interference with added power. Another Radio Invention. Reginald A. Fessenden of Chestnut Hill, Mass., whose name some radio | meter channel channel, the ind the 132 | able of g eco 1l gervice at points within 100 miles of the transmitter Fo- davl communication at dis. tances not greater than 90 miles from the transmi to 150 meter nnel wil @ han | milar r channel wiil give petter service than that which ean| be obtained under the same conditions 3 to 75 meter tances hetw 200 miles are considered. In th $6.3 meter channel will give better service during daylight than 85.7 10| 305 or 133 to 15 OPERATORS IN DANGER. ed when d Old Sets Often Improperly Insu- lated for High Voltage. ploying 135 volts well insulated Most of the sets e or rore are pretty gainst shocks, but many of the older | ets have no such provisions for the | afety and convenience of the oper- ator. When such a set is revamped io accommodate the higher plate power, the operator is éndangered. If he happens to touth one of the “B" leads (as at a plug with exposed tips) and some_metal part of the set which is groufiled, he will not feel o sleepy for the next few minutes, TWhen using the set don't totich metal part! tans may recall having heard, has just | been issued a patent which should aid in solving the question récently raised | by Thomas Edison as to the compara ve-value between radio and phono graphic reprodugtion. he patent, No. 1616416 methodand dpparatus fc ing radio and phonograph r oduc tion. It was filed back in 1924, but | has just been issued. Briefly, it states In’ combi an electric phono ph, ss receiving set loud speaker comprising a pian able by direct electromagnetic ac the eclectro phonograph and wireless recelving set, selectively, | whereby comparison may be made be- | tween phonograph and wireless repro ductions without disturbance from scratching, ic and other disturb- ing impulses; the diminution of sound intensity with distance from said loud speaker is greatly reduced, and the operation of sald lotd speaker, phono- graph and wireless set is made sub- stantially independent of their pos tions relative to one another. Portland Aids Radio. Municipalities are steppi breaches in thée Federal le an effort to aid the fans in the pre vention of “man-made’ radlo inter-. ference, The City of Portland, Oreg., is the latest to pass an ordinance to provide for the minimizing of radio interference and impose a penalty for such offenses. he Portland ordinance states that it is unlawful to operate in the City of Portland any apparatus generating covers the | co-ordinat into the wall in | The new Ray-O-Vac 3-cell 300-foot Focusing Spotlight %$1,,,2§m HERE is a 300-ft. focusing spotlight that sells for little more than half the price formerly charged for a 3-cell spotlight. It has a new and exclusive lock- ing switch that can be removed for cleaning, repair or replace- ment in a moment’s time, yet is assimple and convenient to work as the light switch on your wall. The lens is of purest, clearest glass specially compounded for spotlight use. An octagonal rim prevents rolling when lyingon a flat surface. The reflector has a highly polished silver surface en- cased so that it need never be touched when changing lamps. The head is removable, allowing use as a candle. heavily nickeled. The case is This new spotlight is made by the makers of the famous Ray- 0O-Vac radio batteries and it is equipped with Ray-O-Vac bat- teries, too. These Latteries have staying power. WITH Ray-0O-Vac spotlights and bat- teries are sold by flashlight deal- ronal SN FRENCH BATIERT 451508 - wis ers everywhere. Be sure to ask for thembythename Ray-O-Vac. . FRENCH BATTERY COMPANY MADISON, WISCONSIN Also makers of flashlights and batteries and ignition batteries Est. 1849 Wholesale Distributor which transmission or withc Eles perm [ tecla machines, mach or incorporating a THE SUNDAY STAR, WASHINGTON, D. C, FEBRUARY 6, 1927—PART 1. RADIO GOSSIP AND NEWS American broadcasters are tending |or gausing high-frequency oscillations with receiving apparatus permit to use the same. interfere Hut al apparatus now requiring | its for operation include violet- machines, apparatus using the coils or that principle, X-ray open or quenched spark ines or any apparatus including device producing high-frequency oseillations. i Thosé who désire to opétate such | apparatus must apply for permits to the el reau Even must hours duly work The inspector of building: electri finspect time, lectrical divisfon of the local Bu- of Buildings and pay a fee of $1. then this type of apparatus not be operated between the of 7 and 11 p.m., except by leensed practitioners in doing of professions or in emergencies hancling al equipment is authorized to pparatus in premises at any Permits ¢ revocable for cause or both, may be enforced on those who do not comply With the nes Th the requirements. ordinance is héld necessary for | immediate preservation of the public health, peace and safety, and in la quency take fees, 1eceived | Government. Sev simil | stood law | apolis | these clear bre public the amateurs caps, Tion | evidently the | terpretation of the new ordinance. Ship deast of sultable regulations an is declared to exist. ateurs who hold Federal operate their high-fre- smitters, may have to es and pay the question has not yet of the Federal ck to tr 1o this the opinion out but eral other citie§ have sought ir ordinances, and it is under that in Minot, S. Dak., such a s in effect, while one in Minne- is under consideration. If regulations operate 80 as to up local interference during the hours it seems that the will benefit. They may make suffer further hanai transmitters are strict in- since amateur included under a and Plane in Radio Convérsa- tion. Although American Army and Nav. pilots teleph | trom by (6 A funke have several times engaged in hone transmission from and to nes, combined with rebroadeast- m’ several ground stations, the report of such a demonstration Germany has just been made onsul MacVitty at Stockhoim. erman plane equipped with Tele- on radio apparatus perfect communication with ground stations while flving from During this experiment, | relay conversations for listeners. Berlin to stations plcked up the two-way and rebrondcast them The airplane transmit- ter and receiver are said to weigh onl. COMPLETE 48 kilograms. A. EBERLY’S SONS, INC. 718 7th St. N.W. Main 6557 We Unconditionally Guarantee the Above Batteries BUY RAY-O-VAC—THEY LAST LONGER STAR RADIO 409 11th St. N.W. WASHINGTON’S LARGEST RADIO STORE radio broadcast | and fines of $500 or imprisonment for | hindrance | six months, maintained | RADIO UNTANGLING 10 BE DIFFICULT 1Discarding of All- Licenses | Will Lead to Complications in Starting Anew. What the five unknown Federal adio commissiohers will do with the 700-0d0 broadeasters now operating | and those vet to apply for licenses is the question now being asked in the | radio world. It appears quite certain that the compo: adio bill will be enacted into a law within a very short time. Despite possible delays and most of those following the course of this particular legisla- tion through Congress predict its safe passage this session The effect of this legislation s ques- tionable, but probably it will be for | the best, from the broadcast listeners’ point of view. However, when the bill is interpreted literally, legal exponents say it is startling and likely to result in many court cases from original law sufts and cases appealed from the commission’s decisions. Power Rests in Commission. The future of all radio commun tion in this country, partict broadeasting, rests in the hands these five unknown men. They power to license as few by staffons or as many as the | refusing licenses to those deemed un- | | necessary or undesifable. They r allocate a channel to one or a doze stations ahd regulate them as they | please, considering always public in- terest, The main point being made is t just as soon as it is passed and a proved every radio transmitting sta- tion in the country is operating with- out a license and under the law is subject to penalties, which, however, are not to be enforced during the 60 days fmmediately following the ing of the act. Nevertheless, eacl station, broadcaster or commercial, will in effect be breaking the law until it files a new application with the Fed- eral commission, which may not be appointed or confirmed within that time. ' It is not feared, if this hap- pened to be the case, that either the President or the Department of Com- merce would evoke the law to clos arly | reliable, AMERICAN FURNITURE C0.—512 Ninth St. N. W. B stations, but eventually this will have to be done, probably by the commis- sioners, after giving the present broad- cas‘ers sufficient time to comply. The effect of the new radio meas- ure is called startling, because, al- though Congress did not pass either of the joint resolutions suggesting that no more broadeasting stations be licensed, and although it did not glve the commission specific author- ity to eliminate the unnecessary and undesirable stations, it went farther, eliminating all stations at once. This is lterally the case., Every trans- mitting license is canceled; such stations may not operate without licenses and it is further provided that no licenses be issued by the commission except on applcations, which must show that public interest, convenience and necessity —require their operation. No Distinction Made. 11 of which means that the exist- ing broadcasters, those which kept on their channels, those which shifted and chose wave lengths they pleased, the potential broadcasters nd any who wish to enter the field are placed in the same class. There is no distinetion. The slate is wiped clean; all the old and new comers must seek licenses, basing their applications on public service. Priority, or date of original license, while not mentioned, may have some weight with the commissioners, but it depends upon who they are and how they feel about the many phases of broadcasting. Sticking to the ether channels assigned by the Department of Commerce before last July may count and may not They might decide, for e at commercialized bros not of public interest, senience or necessity, which certainly throw many well tions, which sell time on < onfusion, while contr in force, talent on the pay programs ready to be b Many legal suits would follow such a ruling, but it is not expected. Active broadcasting stations de- siring to continue operating will do well to put their stations in order, to establish proof of public interest, necessity and convenience and be ready in every way to show cause as to why they should pe granted a broadcasting license when the time comes, as it is bound to do with the passage of the bill and the appoint- ment of the five commissioners. Problem Is Immense. One way to assure the continuation of broadcasting might be for the new commissioners to immediately re- license a hundred or two of the old, well behaved stations, but would known > air, are the law says that licenses may be issued only to applicants who can Show there is need in their community for such a public service as they pro- pose; consequently each station must apply of ite own accord and qualify If_station WEAF, for example, was relicensed to operate on 491.5 meter without regard to any of Chicago might feel that it had to that wave, what a howl would result This situation would also apply tc practically every broadcast wave in the present band, and consequently to a large numoer of present stations Without attempting to predict what may be in the minds of the five mer iminister radio for the next year it is obvious that their work will be immense and that innumerable prob lems will confront them. It is hoped that the President in his good judg: ment may be able to find five sane and wise men, one in each of the five zones, who will serve on this national ether arbitration hoard, that the brondeasting industry may not only continue but improve under a control it has long required. | B : EXCESS VOLTAGES HAS MERITS AND DRAWBACKS Attempts for Distance by “B” Elim- inator Owners Often Brings Poor Results. Excess voltage has its drawbacks as well as its advantages. This is some- thing that owners of house-power operated sets should learn. The first thing the owner of the B" eliminator does is to give the plates the full voltage and then strike out for distance. Instead of being con tent with full efficiency on nearby ations, the radioist tries for difficult ‘stations and finds that he is staining very poor performance. The atlons which e could not pick up at all with his run down batteries now come in as a form of interference and prevent him from getting some of the nearer stations without squealing. A good rule when power is always ample and maximum is to strive for quality on the usual stations and not seek distince until later in the eve- ning when there are fewer stations broadeasting and there is less chance of conflicts. To try for distance in the early evening when the air is alive is simply to bring in a lot of waves that conflict with each other and ruin any chance of obtaining clear, satis- factory reception. The man who exclusively manages his own business is never in an over- crowded profession Interocean Building ‘The Home claims WCFL | 1 the | CORD COLOR SCHEMES A in radio sets the_ high (pc and tracer col (negative) side dotted line The general scheme of color desig atlons in the use of cord connections dicate | of the circuits | the low A tracer is a colored woven into the braid and | Newer Equipment Permits Enlarg- ing Set Without Sacrificing Power Tube. is solid colors to itive) sid rs to indicate twisted around it. | No. Attleboro, In some of the newer equipment it is possible to make the set a six, seven r eight tube affair, though each children put on we ¥ chitis, Asthma, m ol “Take Father retaining the power tube. it has been ne power tube fe was cut out, bec to cut out any was the last ture if one A new down the number power consumption same time enjoying of the power tube The real test of the is in elements. and not external dimensio Tt largely Is a matter the filament to toss of the plate to hold tential. 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