The Eugene guard. (Eugene, Or.) 1924-1930, April 11, 1925, Image 49

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The Eugene guard., April 11, 1925, Image 49

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Newspaper Page TextTHE EUGENE QUAED Page Five rJ. - Evening, April U, 1925 SHORT WAVES IN DAY ARE BETTER FOUR -TUBE SEJ IS CHEAPLY AND EASILY BUILT . . . -. i Construction Should Not Cost More Than $40; Exceptionally Clear Tone Results From Four-Tube Radio Frequency Receiver Pictured Below (By NBA Service) ,on Conn., April HAR1; ',mi n invention an 11. . two" ".,, itHdio Ro- "i;,, promise to .fleet W '"rorofouy ibit both i. rprc ma, b. revu- eory-tb.. "eater din" duri? day' "'" F. the Inns w"'e d0 K. T J J h " much lea. powr. nutt, D". Btati,. eliminator rdio build" "'I vlutionarv of these - u Ihe more ,-. is the new tneory, u n "l.a. practically tbe over- ? :.t.dar methods STia radio transmission, if it is W .J accented as true. C."ic 'vrtht ju Vniineers, will in abort or S'erTan -dclition to the moJ .Liver, to filter atmos- and other unwelcome noises TkU'T. Reinarti. famous amateur ' "Center i responsible for the ?! .Tory of Horace A. Beale, j, ,t Varkeraburg, l'a.. is the m mtor of the static eliminator. Paradoxical uongiua.uii Rrinartis theory ia based on bisl. u waves irav". - - - - i"bj day 'than at night. In addition ? the discovery that there J, definite relationship between the ,nni effect, tho distance and the riorums of the radio wave. hrter waves, contends Uoinartl, an penetrate farther'into the lomia ,in laver of atmosphere formed by tat sun than can longer waves, up to the point at which they bio re flected. Being reflected lit a greater Jeijht, the short waves form a much brier circle at which they appear in the earth's surface than tho long waves, anu so tov BUiti ... ttnees. Tk.. so lose utile energy dp am they have not been subjected M tbe absorbing influences of the earth's surface. Keinarti has bern testing this the ory for tho last eight months, in co operation with the naval rcscraeh laboratory at Bellevue, Washington, 1). C. He has obtained proof from kimdreds of transmission schedules in connection with other amateur itations, during various weather con ditions, and finally (luring the recent eclipse. Dr. McCaa's Device The experiments were conducted oo wavelengths ranging from one to 50 meters. Dr. McCaa's static eliminator the product of a year's experiments. It ia still to be perfected. The eliminator is based on this theory: Static dischargers, and power leaks and ft. I R R ' et mi ' r il -zLr Jz t i EEP r -I I; A BATT. j B BATT I cbatt By ISRAEL KLEIX (XEA Service Writer) TJERE is a description of a four tube radio-frequency receiver that excels as to tone quality, is easy to build and operate and has a little better than average selectivity and sensitivity. It should not cost more ih:iu $40 to construct. The set will tune out local stations to ffet distance, but anyone who wants loudspeaker volume on signals com ing from stations 1500 miles away should not assemble tbe set. Its range on the loudspeaker is limited to about 800 miles in good weather, but the quality and volume on the nearby stations is excellent. The parts: LI and L2, 1-3 and L4, two honey comb coils. 75 turns each. CI and C2, .0005 mfd. low-loss var iable condensers ' Itl, 25 -ohm rheostat. H2. 25 -ohm rheostat. Rli, 25-ohm rheostat. C3, .00025 fixed condenser, with grid leak mounting. C, battery, 4 volts. Tl, audio transformer, 6-1 ratio. T2, audio transformer. 3-1 ratio. Seven, binding posts. 1 Panel, 7 by 21 inches. Baseboard, 7 by 20 inches. er material for construction of set. Fifteen turns o( wire are taken off each honeycomb coil to constitute the primaries.. The remaining 00 turns make the secondary on each. To complete one coil, unwrap the 15 turns, cut the wire, lay it aside, then, put a drop of sealing wax on the end of tho coil to hold the wire in place. v Tie two pieces of thread length wise around a vaseline bottle. In oth er words, if you stand the bottle on end, four threads should be perpen dicular, to the bottle and equidistant from each other at the sides. Wrap the 15 turns of wire taken off the original coil around the bottle at right angles to the threads, clip the threads and tie up the newly wound coil. Remove the wire from tbe bottle, put it inside the honeycomb coil and you have LI and L2. L3 and L4 are made similarly. LI and L2 should be mounted two inches from the rear of the base board in front of the .aerial and ground binding posts and perpendicu lar to the panel. L3 and L4 are mounted at right angles to LI and L2 in the middle of the baseboard, directly behind C2. Tho first tube socket should be Four tube sockets, wiring and oth-1 placed between the two variable con densers which are fastened to the left half of the front panel. Other instruments are mounted in the cus timary manner. One 25-ohin rheostat may do the work of all three, if proper connec tions are made. In the accompanying diagram are shown several optional connections. These are shown by dotted lines. They are suggested purely for exper imental purposes, in individual cases. The set first should be tried out without the line labeled "OP" con nected. Note the selectivity. Then make this connection and again watch the selectivity, or ability to tune out a strong local station. ! C4 also is an optional connection, as are C5 and CO. If. placing C4 across the primary of the first (6-1 ratio) transformer improves recep tion, leave it; if not, don't use it. If you have them on hand, .try out vari- Jous capacities of fixed condensers at ! I K 1 tl UV201-A tubes afe used through out. Ninety volts of B battery are required on the amplifiers and from 18 to 22 volts on the detector tube. The aerial should be no longer than SO feet, including the lead-in, unless little selectivity is required. A long aerial will Increase the vol ume and range, however. ish stations and those of othr coun tries. If the nary wre to charge for this service, it is estimated, many thousands of dollars would roll Into the treavury. Hut the department earns enough money in the commercial service it renders ships at mi, when no pri vate station ran take care of its mpi?acps. Such messagea brought in $300,000 last year, more than the cost of operating the entire naval communications service. Messenger for All Besides these and its own mes sages, messages to and from all other gntverntupnt departments are hnndlrd through the naval radio sta tions. In this way the government Is said to save about $2,?.00,O00 an nually. Yet the tT. S. navy pays for mes sages that happen to he handled through foreign stations. For in stance. If a naval ship in Borneo, not within communication of a U. S. naval radio station, sends a message through the Hutch station there, Holland sends in a bill for the ser vice, and Uncle Rain foots it. Besides radio, the naval communi cations servico conducta other forms of communication, Buch as messages by sight and sound, by pigeons, by posts and, of course, the mails. 0. V. HUMRIGK TO RETURN FROM TRIP FOR RIO SURVEY Bureau of Mines Takes Over Helium LOCAL BROADCAST STATION IS PLAN OF EUGENE FANS Plans for a radio broadcasting sta tion in Eugene to announce to the world the resources of this city are being made by several Eugene fans. It is expected the project will come up either before the Eugene Radio club or the chamber of commerce within the next few weeks. "There is nq doubt, but that a radio station, can be made a powerful ad- from high tonnion wires, act as vertising medium for a community, hock esciters to receiving antennas, No matter what woveleuglh the an- Wnna is t lined tn. Die static dis- rhurcps will "shock" he antenna and to affect tho receiving detector. If w could tune the antenna to the ttmlength of the signat we want to rwiw, and then tune the static to a different wave, the disturbance would be either eliminated or so mitigated (hat its effect on the rc ewfr would he negligible. This is what lr. .McCaa's device onB. It consists of an oscillntor and wTfral extra mils and is hooked to ny type of receiver. "Th radio indintrv enn'f Nta .n n Mlep di-H of Ibt-z." Secretary HooTfr said in an interview on the Mure of radio broadcasting. lmnrnvnifiit r 4nis tnore ininnrtnut nnw thnn forther regulation until it become IwiMe to My what form of reKu Mtiftn in needed. The British licens lr system, to cite one regulator "ttMtion. wmtlrl never be tolerated u .hib country, t(, mi he secretary thinks, for ltr conn try would never stand r .'tensing or taiitig radio listen- ' Mr. HoAVKr Bawl VI.. :J- 1 ""i'1" nn" "-"mpany ha a jHr and all tho revrnuo an dr- iWt rV V""'' and vt monopoly l,.n , .l ,. mw nr '"In to -i h' Wk" frT Y"t- ilBH. .,n "'""M"'" around for """h"' P'oplc-. Imi.i " , ", nl"r" P".T I", ri.k .1 . 1 """ h Pmb- says 1 Ijraliam, aisincc and pasacngcr agent of the Southern Pacific' railway," and' one ' tne '"teal to join the ranks of tho Kniglita of the Dial, "towns like Hastings. Neb.. Walla Walla, Wash., and some that would be unheard of are making them selves known all over the country by their programs. A good broadcasting station, wnicn could send Kugene's message up and down the coast and .throughout the west cost about ?:i80O, it has been estimated. That may seem like a largo amount of money, but the pub licity thn town would receive maj he worth mnor times that amount. "Eugene being the sent of the Uni versity of Oregon, and having a num ber of splendid musical artists, could provide good programs either weekly or serai-weekly, and other nearby com munities could be invited to take part. "The wh'de idea is. of course. juBt a tentative suggeation at presenh There would have to be msny thinga worked out before it could be brought into reirlity. In my mind, it is a pos sibility that is well worth investigating." ownership from July 14, 1019, 'to January 31, 10-3. "It ia a serious question, which must be decided by the courts, whether liazeltinc was acting within his legal rights in withdrawing his dedication." Back of this suit, however, A. H. Grebe sees an attempt of the Hazel tine interests to boost their stock. "1 view this suit as a political gcs-. lure intended to create renewed in terest in the declining stock issue of the Hazeltine corporation and its licenses," he aays. T! of 63 radio traffic stations dotting the continental United States, Alas ka,' tho canal zone and its insular possessions. Besides these, 52 radio compass stations along Uncle Sam's coast lines maintain safety at sea. Fee Aid to Ships The navy's compass stations pro vide positions and bearings to ships, navy, commercial, American and for eign, on request. And the service is free, in contrast to charges col lected for such information by Brit- WASH1NGTON. April 11. OP) The bureau of mines, under an act passed late in the last congress, will take over from the navy about July 1 the production of helium, the gas used In inflating the giant dirigibles Los Anecles and Shenandoah. This transfer is not expected by Dr. S. C Lind. chief chemist of the bureau, to involve anv marked Change in policy. No appreciable quantity of helium is being exported now, and the new law provides that export applications must be made to the secretary of tho interior and permission obtained from the president, on the joint recommen dation of the secretaries of war, navy and interior. This provision wis put into thn lnw to nermit future Ameri aens trans-oceanic air lines to have a supply of helium on hand at their foreign terminals. Officials of the bureau are careful to point out that the new bar against 'helium exportation will not militate against foreign scientists who desire a small quantity of the gas for their laboratories.. ' O. V, Hnmrick, radio expert with the Radio Supply company. tt$4 Olive street, is tx peered to return from su extended tour of the east and middle west in the next few weeks, accord ing to an announcement by the pro prietor. It. K. Wittington. Mr. Hum rick has visited all the large broad casting stations, and delivered a lec-: ture on radio over station YVCCO recently. Me has also called on WEHH. W1.S, VUN. of Chicago. 111,! WHO. Dps Moines. la.f WTIV1. KK.MX of Minneapolis. Mr. Hnmrick has had a wide ex-1 perience in radio, says Mr. Witling ton, "and in addition has had much experience in electrical engineering. He has been superintendent of elec tric motive power of the Louisvillo and Nashville railroad, erector for the General Klcctric company at ritts- burgh, erected the first electric chair in the state prison at Lexington, Ky., taught in the Cleveland Auto School at Cleveland, Ohio, aud has becu tour ing the east at our expense to gain an insight into the latest and best radio equipment and how tho eastern cities are organizing radio clubs. "When he arrives in Kugeno Mr. Hnmrick will be prepared to give Information on the question of broad casting and who is going to pay for it, radio pictures and when we can expect them, diagrams of new hook ups, how to change your old set and make it pick up, a new hook-up call ed the baby super-heterodyne, using four 201A tubes that will do the work of eight. He has tested the set men tioned and csn vouch for its DX and selectiveuess and purity of tone." came in for classical selections than for jazx. As a result, Vin James, pianist of Helleville, 111., sat for three hours at the KSI) piano and played 70 pieces of music. The program ranged all the way from "Largo." of Handel to "Ited Hot Mamma," but jars took a minor part. By the requests sent In, the mnt popular piece asked for was the 'Teer Gynt" suite of tlriej. Next came Tercy tirainger "Shepherds Hey" and "Country tlardeus," "Hen ry VIII Panees" by Herman, and the "Sonata 1'athelique" by Beethoven. Other poiilnr elHini also received more votes than jaxx. Among .ia pieces, Irving Berlin's "All Alone" led the l!st. "Follow the Swallow" sod "What's Heroine of Sal ly" usd the least requests. Microphone Only For Entertainment CHICAfiO, April 11. Broadcasting stat inn' WON, here, is trying to set on example for other stations to follow. It is declining to answer requests fur special numbers or even tele- grams and letters of appreciation by radio. lVrions requesting a special song and others receive their acknow ledgment and thanks by mail. The microphone is kept clear for the entertainments and lectures alone. LARAWAY'S Summer Radio PERFORMANCE! That's the Thing Thn liiullo Industry has become stabilized and Is entering upon an ra of expansion In commercial, educational and entertainment fiolds undreamed of a few years ago. Reputable RncUo Bota nre now generally known making It an easy '.ask to select a model suitable to your own particular necda and location: HERE YOU ARE Gllflllen, Classical Music Better Liked Than Jazz Over Radio ADVICE FOR A WIFE TOKIO, April 1 1 W A letter picked np on the beach near Kama kura and handed to the polico con tained these injunctions from a jeal ous naval officer to his wife: "Never converse with tbe postman or the tradesmen. Hove tlie news paper and letters delivered through the slit in the door. Pon't go to the public bath at night." L fBv NBA Service) yASHlNGTON, April 1L Uncle tion service, invaluable as it is ex-) pected to be in war time, ia proving I a valuable asset in pence. j It is saving lives at sea through the service of its compass stations.) It is saving the government some ; $2,500,000 annually in messages sent i out for other departments. It is more than paying for itself. Not counting the transmitters on naval ships, airplanes and other mo bile units, the service has a total Radio Headquarters for the Following Receiving Sets i a rti rt ?UN6 DI6TAHCl-Irt lIV RADIOLAS FREED - EISEMAN MARWOL : FRESHMAN Eugene Music Shop 8 East Ninth Street ST. LOUIS, Mo., April 11. Classi cal music won a decisive victory over jazz when a special program of re quest numbers was broadcast by Stn- tion KSO, here. Out of more than 300 compositions asked for, following announcement of this request program, more votes $125 4-tuba Nutrodyn with speaker, tubes, batter ies and all com plete, only....".. Ollfillen, 6-tube Is'utrodyne distance, set all COfin complete 3CiUU Atwator Kent, 5-tulie model all complete, ev- (47(1 y I 1 v m ery thing, only... Super-Heterydyne Radlola, T?ft(l complete with everything 4?fcQU We are exclusive dealers for the Atwater Kent Radios. Convenient Terms on Radio at Laraway's Laraway Music Stores N1 "'"nmion - ngnt there for the .t... ' la iv. .,' l "."""ous that there "Hliene. getting the radio "T !. ' W"I-I 'hat some lit vbom. V'n '' lia '"laV'.r ""'V'' ."net- "r ,''r, " n- "tiii. 1 T""" l-'Pons sales ' that --'"'"' in 1(C1. i?h ti, 1 r""M provide ""ram. f ,1. , ""v ,nr dai y It -RTI h'" .vl t.i-ni. line art 1 la . . more (By NEA Service) TKW YORK, April 11. A hereto fore iinrevealed page in the history of the neutrodync circuit may be laid open to the public in the course of a suit brought by the Ilaieltlne corporation and the Inde pendent Radio Manufacturers, Inc., against A. II. Grebe and company. This iiage, according to tho de fendants, may reveal that the neu trodvne patent held by Trofessor Louis Haseltine of Stevens institute i of Technology had been dedicated by 1 him as public property and there- j fore raises the question whether he could revert the patent to his per- ; sonnl benefit. "Haieltine was employed by lh nary department dnring the war." the firebe company explains, "to do. ; sign a radro receiver for government I use. and while in the service of the ( government developed a circuit ar- . rangement for which I". H. patent j Xo. I,4.VUn was later granted." ' Subject of Suit ! It is this patent that the llaaei- RADIO lili tsient. line interests declare in their suit import-1 is being infringed upon by the Grebe country every j company in its synchophase receiver. I "Having developed this circuit in I the employ of the government." the i explanation goes on. "Haicltine evi dently considered that it belonged i to the people of the I'nited Wales, core of itself. ! as he applied for a patent under materi.i ,,, - , j,,,,!,,. 1. known as the dedication act, one i.t !.. meet,. !:... ",. . now i thintt of improve ae tfc',. '"""inn of growth " a. h. nr e,,v IT ..'"'"rial put out T - " NIC - ising .if an - That is the most I This provides that the patent shall become the properry and he open to the use of the public. Wat Owaa ltr "Having thus dedicated his Inven tion to the people of the I'nited Svates. Haxeltme reconsidered his trace hss . lAl;",v 'tRS MISSING ,...' ' '"t Brut,), f!,: m '':i mm ,h, h",' i gift and took steps lo recover it. bj T ar 11,., 1'" "I' canceling from his patent applica- " ntitf tt,0 ' "'ag'on ye.terday. tinti papers the dedication rlaii-r- "Nul. ""e rescued re i The patent office permitted this t rJiaoa of front, hut the public was GfiocDPSon 9PEIKER reaches the highett pinnacle of tone reproduction The Thorn pson Speaker was designed by famous engineers, with wide experience in acous tics and sound reproduction- The Thompson Speaker is beautifully satisfying in its Trueness and Fidelity to every musical pitch and tone. Regardless of price or type, a Thompson Speaker will improve tho tonal re production of any receivini set tl Thompson 5-tube Neutrodyne only $130 terms. 6-tube Neutrodyne, only, $185, terms. Special Prices Next Week Wonderful Savings GREER - CALLAHAN CO. wonderful savings 011 nationally advertised radio merchandise. Every article, guaran teedevery article as represented. Omo in see these, bargains for yourself Seeing is believing. Xote the prices. 13.01) (RCA) Cunningham cTO fTP Tubes (.101-201-200) 4b.Ot) $3.75 Kverready Yale, q 46-volt battery sPaCawO (6.00 3000 Ohm ma r-f Headphone 9Tst3U 125 Atlas qq Qf- Loudspeaker $9,33 (35.00 Magnavox COO Cfl Loudspeaker PtvOU (9.50 Loop mm , Aerial 4 I I O (25.00 Rrlatol C11 7C Loudspenker 9 I I I O Battery Teatora. Radio Cablneta, Sockets reduced. 2-Tnne Walnut Cabinet worth (40, COO Crt Our price $CC.QJ 5-Tube Tuned Radio Frequency Set, complete with A and B Batteries CIOC flft -only, terms 9 I aCOiUU (18500 Nationally Advertised Ret, complete with Ratlerlrs and CI DO fIZ Loudspeaker 4 I UOa f O Trade your piano for a radio L Greer-Callahari Store 858 Pearl St. 858 Park St. Call and see our new ranges and davenports No obligation to buy K.XL J Enchanted Evenings! Why Buy an Expensive RADIO SET to enjoy tho fascinating programs folks are enjoy ing in their homes nowadays? Radio brings you music, educational talks, concerts, In.test world happenings and at a very reasonable cost if you see us for your set. WW. The Famous Globe No. 770 WILL GIVE YOU THE VERY QUALITIES YOU WANT MOST The ability to find and hold stations, without interference, accurate logging and exact repro duction. "Stand by" with this receiver and always be assured excellent radio entertainment. GLOBE RECEIVER, with four UV 2D1A Radiotron tubes; storage "A" Batterv: 00- volt Dry "B" Battery; Loudspeokor; cords ana plug, complete at.. $108 The Only Exclusive Radio Store in Eugene Where service department is always at your command Radio Supply fx Radio Supply Srh COMPANY rSWA vvLa liVe BtrCet V p 'I ! VV1 . IV v SI nm i I: . 4 - ? 8 ?: ; 1 I V '.' 1 ,