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About Omaha daily bee. (Omaha [Neb.]) 187?-1922 | View Entire Issue (May 9, 1920)
Y LOCATION BIG FACTOR, O'ROURKE TELLS AMATEURS Antenna Should Be Erected in Open and as Far From Trees As Possible, Expert Points Out. By JOHN GILMORE O'ROURKE, Niix-rlnrrnilent for Plstrlrt of Kntrn NchrufUa of the .Imrricao Badlu Kflny League. The first problem that confronts the amateur when erecting an antenna system is the location. Try pnd erect your antenna in the open. Erect it as far from trees and other structures as possible. Steel struc tures ;ml trees near your antenna tend to isolate it. However, their worst trouble is that they affect the '.vave length of your antenna. A tree of any size located under your aerial will continually change the capacity of your antenna system, thereby changing your wave length. Thus it is next to the impossible to accurately calibrate your receiving apparatus. Your wave length will be considerably higher in summer than in winter. If there is a power li'.ie within 200 feet of where ypu propose to place your antenna, try and erect it so that it will be at right angles to the power line, providing the line carries a potential of 2,.'-i00 volts or more. However, it will be best to place it at right angles to any wire system ithin 200 or 300 feet of your antenna. If this is done humming in the receivers, caused by induc tions between your antenna and the power line, will be reduced to a minimum. The nearer you can con struct your aerial at right angles to these wire systems the less the in terference. We will now suppose that you have chosen the best location for your aerial. We will also suppose tliat you have chosen the inverted "L" antenna as best suited for your loca tion. There are now confronting us three main problems; namely, wave bngth, insulation and conductivity. The wave length is. of course, the most important. If you intend to install a transmitting equipment the total length of your antenna should not exceed 120 feet. If more than four wires are used in the flat top portion of your antenna its total length should not exceed 110 feet. Ry total length I mean the sum of the flat top, lead-in and ground lead. If yon are desorious of erecting an aerial of larger dimensions an an tenna series condenser will be re quired to bring the transmitted wave down to 200 meters. However, this method is not as 'efficient as con structing an antenna whose funda mental wave length is slightly be low 200 meters. In this case your wave can be brought back to 200 meters by means of your antenna inductance or the secondary of your oscillation transformer. In constructing your antenna, it is not necessary to use bare wire. Rut tor the sake of lightness it is best. For a flat top, whose length is SO feet, the. wires, if there are four, should be spaced about 18 pinches apart. No. 12 copper wire makes a very good antenna, although stranded phospher bronze cable is the most efficient. If your antenna contains four wire?, the lead-in should also contain four. The spreaders should be made of some light but strong material. Ovenn sulation is an impossibility. Always choose some good insulating mate rial, such as bakelite or electrose. Electrose is the standard insulation frr aerials. The cheapest way to in sulate the flat top is to place the insulators in series on the bridles or hoisting ropes. Bridle and hoist ing ropes should be boiled in wax before placing them on the antenna. Sash cord is the best rope for use in lightweight aerial construction. Securelv solder all connections To do this does not require a gob of solder as big as your fist around each loint. In next Sunday's Bee I will write ' of the ground system. Queries Department. Any experimenter or amateur may make use ot tnis department as a source of information regarding radio communication. No qtieetiorrs answered that do not bear interest to the ajmateur body as a whole. No questions answered by mail. Address all questions, Radio De partment, Omaha Daily Bee. T. H. Omaha, Neb. 1 T have heard radionhone mes saees on a crystal detector. Is this a freak? A Deridedlv no. 2." They are not very loud. Ts there any way to make them louder and still use a crystal detectorr A. By selective tuning. How big is vour aerial? D. D. R., Tilden, Neb. 1. I have a small station, 1ut cannot send outside of the state. Must I have a license? A. If your transmitter interferes with stations capable of receiving messages sent from a station situat ed outside of Nebraska you will re quire both station and operator's licenses. 1 Church Members Figure Out Where American's Money Goes Boston. Mav 8. The Congrega- tionalists of Greater Boston have published the following statement of how money goes: Americans (all ages), average for tobacco per week, 70 cents. Americans fall ages), average for theater and movicj per week, 43 cents. Americans (all ages), average tor ice cream and candy, 40 cents. Concreeationalists (adults.), tor the church, 25 cents. Congregationalists (adults), aver age tor Denoveicnce, t ccuis. 1 ' 6v A PALATABLE PLATE Plates are as necessary, just as much as plate dinners are a cus tom. The more beautiful the plate the more palatable and appetizing the meal. The maid without teeth would not be pre sentable to serve with our Porcelain Plates she would add charm to the dinner. Dr. Todd makes Porcelain, Aluminum, Gold, Zillimite and Rubber Plates. If you have been misfit the doctor will fit you, take you out to lunch and start you, off right. po you want a Dental Plate? Dr. G. W. TODD Office Fourth Floor Barker Blk., 15th and Farnam Streets Experts See No Hope For Lower Sugar Price (Contlnned From Pee One.) refiners in Washington declare it is impossible to figure on anything like normal supply or prices until Ger many gets back into prewar produc tion and the countries parcelled off from Germany, like Czecho-Slovakia, assume their share of the burden of producing. Place Blame for Shortage. It is estimated by the refiners that the actual shortage in the sup ply fr the United States is about l,i08,000 tons, the- normal con sumption in this country being about 4,000,000. This shortage is due principally to the fact that the re fusal of President Wilson to ap prove the recommendation of the defunct sugar equalization board that the United States buy up the Cuban crop, as it did during the war, and allocate it to the European powers, left the way open for Great Britain to buy up the bulk of this crop. In this connection, the refiners, who profess to be gravely alarmed over the situation, bitterly criticize the administration on the ground ot short-sightedness. Like the large coal operators, the refiners are fearful that the present situation over which they insist they have no control, will lead to drastic legislation and perhaps nationaliza tion of the industry. Also they de clare that when normal production returns and prices drop they will find themselves face to face with high prices for their raw material and high wages to their employes. Resales Vicious Practice. "Under the threat of government prosecution," said Truman G. Pal mer, beet sugar expert, today, "the beet sugar refiners in the west and middle west disposed of their 1919 crop as rapidly as it was refined and at the government fixed orders of 10J-5 cents. So there is no corner as far as we are concerned. There has been, however, apparently a great deal of individual hoarding on the part of householders which has aggravated the situation for the con sumers who did not hoard. Also there has been a great deal of specu lation in the way of resales, which . 1 L . A i V, llvi i the offer made by the refiners to the government is destined to cor rect. I know of one instance in which a lot of sugar which went on the Chicago market was resold 11 times before it reached the consum er, each of the intermediary brok ers taking his profit. How general this is 1 cannot say. "But that there is a real shortage is perfectly patent from the figures. The beet sugar crop in this country last year was 726.451 tons against 7oO,950 tons for 1913, and there was some drop in the Louisiana cane crop. I know that the refiners in southern California have recently paid farmers as high as $19 a ton for sugar beets. The yield in South ern California of refined sugar from sugar beets is considerably higher than elsewhere or about 318.8 pounds per ton. Elsewhere the yield is about 272 pounds per ton of beets." Big 1920 Yields Expected According to Mr. Palmer, the yield of beet sugar in the United States this summer will be about 150,000 or 200,000 tons more than the 1919 crop, extra large acreages being re ported from Michigan, Colorado and California, the three principal beet sugar growing states. He ex plained that it required considerable time to increase the yield owing to i he close attention required of the farmers growing sugar beets. The California crop is expected to come on the market in July. He told of sugar brokers vainly seeking sup plies in various directions and of one who paid 17 1-2 cents a pound on a shipment from Holland Efforts are being made by the re finers to bring in supplies from Java and the Philippines, but the Java crop has dropped from 1,778,000 tons to 1,335,000 tons. Dog Catchers Ask Boost. Paris, May 8. Paris dog catchers are on strike and demand double their present wage before they re sume work. They are paid 30 cents for each dog they catch, but demand bO cents. As they capture on an ave rage of 20 dogs each daily, their weekly wage under the proposed scale would be nearly $75. Women will be admitted as stu dents to the new Harvard Graduate school of education. Sought Divorce When Wife Didn't Mend His Clothes Kansas City, Mo., May 8. The fact that a wife fails to keep the clothes of her belter half mended is no grounds for a divorce- So ruled Attorney W. R. llogsiett, sitting for Judge Thomas, of the district court, here the other day, when August L. Hunter, a truck 3f & ... I driver, sought to be freed from bH spouse, Mrs. Annie V. Hunter. "If failure of a wife to keep he!) husband's clothes mended were ufri ficient grounds for divorce most any man in all probability could get on some time during his married life," llpgsett told Hunter. , "I might even get one myself. Bee Want Ads Are Best Busines Boosters. II : I I I I I I I I I I I I I I '' I I'll H'll:i I 1 I I I I I I I I I ..'lllllltii,;,,lllll,j M.ON-YEN-LO Chinese and American Cafe V : 1508-10-12 Howard Street Second Floor ; Announce , ; The cafe has been completely remodeled anil - equipped with imported fixtures. Z We serve quality foods in Chinese and American dishes. " Prompt Service and Reasonable Pricei Give us a trial and you will be satisfied. 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