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INTERFERENCE OF RECEIVING SETS Each, When Tuning for Distant Station, Acts as a Continuous Wave Transmitter. We have explained that the csntlno oua. falriy steady whistle*, usual!/ beard while tuning for the distant sta tions, was due to a combination of the carrier waves of two stations which were very nearly on the saute wave length. There Is another aeries of whistles always present which very much resemble the whine of a mos quito both In tone snd amount of an noyance produced. These are caused by the receiving sets of other listen ers. Every receiver using a vacuum rube detector with a regenerative clr cult Is a potential transmitter. In fact It contains all the essentials of u radiophone transmitter on s small scale. 'Hie detector tube when oscillating produces oscillation exactly similar to the carrier wave of the radiophone stations. The frequency or wave length of this wave can be varied by •’banging the tuning of the receiving tuner. The usual procedure In tuning for a distant phone station is as follows Put the detector tube In an oscillating ruuditlon after the tuner has been ad Justed near the point where expert ence has taught us to look for the broadcasting stations, then move the dial slowly across the approximate jHilnt where Che stations are usually heard. The carrier waves are located hy a whistle which starts at the upper limit of audibility snd goes down the scale until It becomes so low that It Is no longer s note. At this point the set Is In exact resonance, and If the tickler, coupling, or piste tuning In ductance Is decreased until the detec tor tube stops oscillating, the very best adjustment Is obtained fer recep Mon of that particular station. Tnfortunatelj while this listener 1s going through this operation his re ceiving set Is acting as a continuous wave transmitter, and Is producing some Inharmonious walla In the phones of his neighbors who happen to be already ou the wave of the same station. The continuous wave sent out by the receiver rtaibloas with the <arrier wave of the transmitting sta tion. producing an audible note. If the operator could tune his set as aim ply as was described above there would be very little interference. but be usually whlstlas back and forth scross the wave of the transmitting "fetlon several times. Often several listeners who have been getting the '•oncert perfectly will get restless be tween selections snd get their tabes to oscillating end w'hlstle up and down m few times. All listeners should be very careful to keep their detectors in a non oscil lating condition as much as possible to reduce this annoyance of Interfer ence between re<•elvers opinions seem to vary considerably in regard to the comparative amounts of energy Inducted Into the antenna by ibe "single circuit" or conductlvely ■ upled. and the “three circuit” er nductlvely coupled receiving set. Previous to the introduction of the single circuit very little trouble had been experienced with beat notes from receiving stations. This was no doubt due to the fact that receiving sets were rather few and far between ; also up until a few years ago there wa* a very small percentage of c. w. telegraph and phone stations so that there was no reason why an amateur should keep his tube In oscillation condition. On the contrary, be was very careful to keep It Just below the oscillating point, that being the most sensitive adjustment for spark signals With the telephone and c. w. tele graph transmitting station*. 1. e., tube transmitters, came the single circuit tuner with Its extreme simplicity of adjustment, which was so well adapt ed to the very sharp tuning of the new transmitters. And with the ad vent of these new transmitters came the necessity for making the detector tube oscillate In order to locate a sta tion «>n the scale of a receiving tuner. N irally then the Interference be ta «*en receiving sets became notice able at about the time that the single circuit sets became numerous, snd this bel(»ed to prejudice the minds of the radio public against this type of re ceiver. However, the fact that the single circuit arrived at about the same time with the Inteferenee was by no means the only reason for bellevln.' this tuner to be the main cause of the trouble. For Instance In constructing a single circuit or conductlvely coupled tuner the difficulty Is In obtaining regenera tloii at all points on the scale. This seems to show that there Is more re sistance In this circuit tbun In the in durtlvelv coupled rvpe. The main point of difference Is the close coupling to the antenna. Being con ductlvely coupled, the coupling to the antenna circuit Is at maximum at all times. This causes the ra diation resistance to be high, which seems to be the factor that keeps the tube from oscillating freely without unusually close coupling be tween plate and grid circuits. Tims we are led to believe that this circuit is one to avoid If Interference with orher listeners Is ro be reduced If we must have single circuit tun ers the thing to do to reduce the ra diation to a minimum Is to reduce tho slse of the antenna series con donser and Increase the number of turns In the inductance, 'nils will give sharper tuning and there will be much less trouble In getting Uie tube te regenerate. In many localities there is a great deal of Interference from spark sta tions ; especially in the cities on the coast or Great Lakes, where there are commercial stations to handle the ship traffic. These spark stations do not tune very sharply, aud even If the sta tion Is located several miles away it Is often Impossible to tune them out with the average tuner. When ’unlng for a faint station and using amplification there Is nothing more nerve-wracking than to have a spark station roar in unexpectedly. There la little that can be done about (his Interference. If the station Is close a change of wave length would do little good even If this were |*>s slble. If it is u commercial station It Is doing a much more Important work than our broadcasters are. and of course cannot be expected to stand by for them FIRST RADIOPHONE EXCHANGE Opened at Croydon, England, to Maka Connection With Pilots of Air Expresses. What Is said to be the first radio phone exchange In -the world was roceutly opened at Croydon. England, the point from which the air liners to the European confluent take their de parture. according to <’on*ul Llnnell. The chief use made of this ex change la to connect the aerial traffic controller, who has his headquarters la a control tower at (tiarlng Truss. 1 on don. with the pilota of the air ex presses flying between tYovdon and the continent. The wlreleas exchange can also con nect the phones of the airships and airplanes while in flight with any of fice at the aerodrome at Croydon, mak ing direct telephone conversation pos sible. The pilot of each aerial transport Is now required to report hla position to the traffic controller every 15 minutes, eo that the progreas and po sition of each plane in known through out Its Journey. The controller la of particular value In directing the course of the aircraft In rases of fog and In giving them special directions for land ing Radio in the Prison. “Trusties” and officials at the Ohio state prison farm at London. Ohio, are now able to keep in touch with the out side world through the installation of a radio receiving aet. purchased from the entertainment funds of the Institu tion. 'Hie aet. which has Just beeu In stalled. will be enlarged within a few month* by the addition of a transmit ting set. through 'he use of which prison authorities hope to be able to bring about recapture of escaped con victs mure quickly. The news of es cape will be broadcasted Immediately. Court Adjourns by Radio. From his steamer, incoming from Europe. Justice Tompkins of the Su preme court of Rockland county. New Jersey radioed to Ids secretary in Kyack the necessary formal notice for the adjournment of his court, which was scheduled to convene on the morn ing of Ids arrival. 'Hie Justice real ized that he would not have sufficient time to reach Nyack after the ahlp docked, and for the first time In his tory used the radio to arrange for ad journment. Mountbatten a Radio Fan. Lord Louis Mountbatten, who sprang to fame with his comment regarding “the bird.” which the Jolly old baseball bugs gave Former Judge Landis In N’ew York, expects to specialize as u lieutenant In the British navy lu naval radio, he told rei»orters while touring America on his honeymoon with his brlda, the funner Miss Edwlua Ashley. Wireless Invades Arctic. Wireless Ims invaded the Arctic ter ritory. a powerful r dio station having been established on the Norwegian Island of Jun Ma; en. It communi cates with Norwegian. English and Swedish meteorological stations and was designed for service to sealing und whaling \ essels that put In at Jan Mayen Government Has Ten Stations. The federal government now main tains ten broadcasting stations for the punmae of tending out crop and mar ket newt. Tracing Bees in Australia. Some interesting facts concerning native lice hunters come from Aus trails. wild bees nests are usually well hidden, and. the flight of the bee* be ing too fast for the eye to follow, the aborigines have devised various lgenl ous methods of tracing them. One way is to watch the bees gath ering pollen, and then, when a honey laden bee alights on u flower, to place a piece of white feuther-down. mois tened with gum. on the underside of Its body. The native eye can then fol low the bee's homeward Journey. A white beekeeper on the south • oast of New South Wales Is little bo hind the natives in cunning Ills meth od is to WHtch bees drinking at a pool. If they fly away slowly, and at no great height, he knows that u nest Is close at hand; If they flv fa*»t and high the nest is likely to he miles away. Penetrating. Percy —I’m sure my eloquence pene trated your father’s mind. Peggy Ye-, papa said he was dread fully b..red Great Sea Fighter Indignant. Towards the close of the war with the first French republic, when the general distress was very sharp and bread very dear -In 1 HOC the price of a quartern loaf In England roe# to 1 shining and 10 pence half penny—s curious fashion arose of giving dinners In which the guests were asked to bring their own bread. Nelson was In vited to such a dinner, but through some oversight he had apparently net been Informed of the conditions of the feast At all events when Nelson found that there was no bread he made quite a little scene, celled bis serv ant and. before the whole company .rave him a shilling and ordered him to buy a roll, saying aloud: “It Is hard after fighting my country's battles I -hould he grudged bar bread.” EB mwmt IDToniffht 111 to tone end strengthen the orgono of digestion and elimination. Improve appetite, stop sioh headaches, relievo bil iousness, correct constipation. They aet promptly, pleasantly, i mildly, yet thoroughly. i Tomorrow Alright W. A. ZIMMKK DRUG CO. SANTA KE HAII.HOAD TIME TABLE West Monad Trains. No. 1. The Scout t:42 cm No. 3. Calif. Limited, no atop.. . 9:17 pm | No. 5. Colo, and Utah Exp 1:16 arn No. 7. Fargo Exp., no slop 10:03 pm No. 9. The Navajo, no stop 11:01 am No. 11. Colorado Flyer 10:02 am No. 63, Valley Express 12:30 pm Arkanaaa Valley. Arrive —— 1:26 am Leave, except Sunday 6:30 am Fact Monad Trains. No. 2. Tiie Navajo, no atop 4:20 am No 4. Calif. Limited, no atop.... <:46 am No. S. K. C. and Chicago Exp 2:42 am No S, Santa Fe Eight 11:11 pm No. 10. The Scout 11:67 pm No. 12. Chicago Flyer 4:16 pm No. 64. Mixed 11:2* urn Arkansas Valley. Arrive «:26 nm Leave, except Bundsy 0:10 pm NOTICE FOR PUBLICATION Aiiili r. r imi » • Department of the Interior. I*. B. Land Office at Lamar. Colorado. January 9th, 1923. Notice ia hereby given lhat Kalph It. Darland, of Lamar. Colorado. Route 8.. who. on March 17. 1919. made Original Homestead Entry No. U 26068 for BE'« Bee. 4 and NK', Sec. *»: and who. on February 10. 11*21. made Additional Hom< stead Entry. No. 027368. under the Homes!• aed \<t of December 29. 1916. for i lie SW V 4 of Section 4. all in Town ship 21 Smith. Range 45 Went o' the Sixth Principal Meridian, ha* filed notice of intention lo make Final Three Year Proof, to establish claim to the land above described, before The Reg ister of the U. S. Land Office, at La mar. Colorado, on the 23rd day of Feb.. 1922. Claimant names as witnesses: Oscar C. Myers, Charles I.undine. C. M. Darling. Chas. Goodwin, all four of Lamat Colo., Route B. SILAS E SPECK MANN. Register. First Pub., Jan. 17. 1923. I Last Pub., Feb. 21. 1923. NOTICE FOR PUBLICATION Department of the Interior. U. S. Land Office at Lamar. Colorado. December 21. 1922. I Notice is hereby given that Clifford I W Hinson, of Wiley, Colorado, who, on I December 12. 1910. made Desert Land I Entry. No. 09172, for the East Half of ' the Southwest quarter of Section 27. Township 20 S. Range 45 W. of the 6th Principal Meridian, has filed notice of intention to make Final Proof un der Par. 3 of the Act of March 4. 1915, ito establish claim to the land above described, before the Register of the U. S. Land Office, at Lamar. Colorado, on the 16th day of February, 1923 Claimant names aa witnesaea: Albert Mayhew, of Brandon. Colo. Mr*. Nora Neat, of Brandon. Colo Mrs. Sarah E Preaton. of Lamar. Colo. . _ . i W G. Clevenger, or Brandon. Colo SILAS E. SPECK MANN. Register. First Pub., Jan. 3. 1923. Las* Pub.. Feb. 7, 192*. ) j ( iiiiiiiiiiniiiiiiiiiiiimiiiiiiiiiiiiiiiiiiiiiiiiilliilimillliiiliiiiiiiiliilii*»*i*i*»****l»»ij. We Invite You to Do Your Bank ing Business With This Bank Wc handle Checking, Having, and I Trust Accounts | SAFE DEPOSIT BOXES | 4 PER CENT ON SAVINGS Lamar National Bank I OFFICERS AND DIRECTORS § C. M. LEE, B. T. McCLAVE, M. J. McMILLIN | A. DEETER, W. W. COOPER, i R. E. ADAMS s*iiiiiiiiiiiiiiiiiiiinii iiiiiiiiiiiiiiiiiimiiimiiiiiiiiiiiiiiiiuiiiiiniiiifiHiiiiiiii*X* I BON TON MEAT MARKET iimiiiuimimiiiiiiiimiiiiiiiiiiiiiiiiiiiiimiiiiiiiimmiiiiiiiiiiiiiiiiiimiiiiiiii i The Best Place in Lamar to Get Choice Meats of All Kinds Poultry, Fish, Oysters SEND IN YOUR DAILY ORDERS EARLY AND WE CAN GIVE YOU BEST SERVICE A. EVERETT Phone Lamar 123 | An Unlimited Amount of I = 5 Money To Loan | | On DRY LAND FARMS And RANCHES—S YEARS TIME I = in Prowers, Baca, Bent and Kiowa counties. Liberal = E sums and prompt service. Money always ready § = as soon as title is completed. r S See everybody else then call at our office before placing your Lrar S I FRANK A. COX REALTY CO. | E (Successors to Mcllvaine-Cox Realty Company) E E LOCAL AGENTS = ri ( 11 n l( i ( 11 rr r GEO. A. EVERETT i . Groceries,Shoes,Furnishings and Queensware Everything Good to Eat and Wear Sole Agents For CARHARTT OVERALLS, QUEEN QUALITY SHOES for WOMEN, AMERICAN GENTLEMEN SHOES for MEN. SECURITY SHOES for BOYS and GIRLS 112 South Main Street Phone Laniar 17 Umar, Colorado.