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Show THE SAUNA SUN, SAUNA, UTAH New Seismic Laboratory of Fordham University Cleanses moath and (Edited by G. teem and aids digestion. Relieves that over eaten feeling and add month. Its flavor satisfies me craving lor Douglas Wardrop, Editor of Radio Merchandising.) wests. Is doable Wrlgleys value la tbe benefit and pleasure It provides. Connections for Use as a Filter. When Troubled by Nearby Broadcasting Station Break Antenna Lead to Receiver gnd Insert Coupling Coil. Fij. "Aerial 2. Coil tense No man gets into the future by sitting sately on the fence. Calumet Nut Cookies cup butter cup sugar eggs cup flour level teaspoon baking powder cup chopped nuts 1 teaspoon vanilla Cream butter and add sugar and eggs, well beaten. Sift flour and baking powder together. Add to first mixand flavoring. Drop ture; then add nuts from a spoon on a greased baking an inch space between leaving sheet, them. Sprinkle with chopped nuts and oven bake in a hot (350 F. ). This will make about two dozen cookies. Vt Mi 2 1 1 Condenser The new seismic laboratory of Fordham university. New York, has just been dedicated. shown The building The laboratory is the gift of above and, at the left, Rev. John S. OConnor with the new Milne Shaw seismograph. William J. Spain of New York in memory of bis son, the late W. J. Spain, Jr., a member of the class of 1924. Ground To Connect Parallel Filter Set Switch on "Open" and Tune Receiver to Desired Station. Move Filter Switch Until Filter Condenser Is Adjusted. adjust your receiver to the proper the wave length before the transmission radio fan of today is the elimination begins. Many experimenters also find of interference from broadcast sta- it convenient to have their tuning controls calibrated in wave lengths. This tions In and about a great metropolis. With its six or seven powerful stations wavemeter enn be used for this purIn operation and whose wave lengths pose only with regenerative receivers. are somewhat close together, it Is With the usual single circuit tuner tlie operation should make the dequite difficult to tune in to a given station wdthout hearing the side bands tector tube oscillate at approximately from the other transmitters. ' Tills the desired wave length. The wavecan be more related to the operation meter Is then brought near the anof WEAF on 492 meters and the new tenna tuning Inductance and the constation WNYC on 520 meters would denser slowly rotated until a double click Is heard In the telephone reshow only 34 meters In difference. A combination wavemeter and filter ceivers. This click is due to a sudden change consisting of a precision vernier con- In current through the telephones. denser and tapped coil or inductance When the wavemeter Is tuned to the has been available to radio experimenters for some time. With this in- wave length of the oscillating tube strument the broadcasting listener can It withdraws sufficient energy from the tube to momentarily stop It oscilreadily cheek the wave lengths of and a click In the telephones broadcasting stations or of the dot lating, and dash telegraphic signals which results; another click Is heard when the tube again begins to oscillate. If may be Interfering with his programs. two clicks occur 30 or 40 meters The device may also he employed ef- the the coupling between the apart, fectively as a radio filter to reduce and the receiver should be loosinterference from undesirable stations. The use of the instrument as a ened by moving the wavemeter coll further away until the two clicks filter Is shown in the accompanying By LEWIS L. ELLIOTT A perplexing problem facing of a Members of the American legion post of Jacksonville, 111., have completed the construction of a repiica These box cars were French box car and locomotive, which they will take to all state and national encampments. used largely during the World war and had a capacity for 40 men or 8 horses. The figures "40 and 8," painted upon each, gave the returned service men an idea in the formation of an auxiliary to the legion known as the "Forty and Eight. I wave-met- Painting Brooklyn Bridge Again LAMP POSTS OF OLD TINS device will improve of any receiving set. This improvement is more noticeable when used with the single circuit type of receiver than with the inductively coupled type. Its use with a crystal receiver is quite simple. There are two particular methods of using this Instrument as a filter; one Is called the series method, the other the parallel filter. In Figure 1 Is shown the proper connections for use as a series filter. When troubled by Interference from a nearby broadcasting station, break the antenna lead to your receiver and Insert the coupling coll as shown In Figure 1. diagrams. This the selectivity Setting the Fainting the Brooklyn bridge is an annual affair, yet every year when the painters are, making their way through the great network of cables the crowds gather to watch them at their hazardous work. Tills picture was made from oue of the towers. Beautiful ornamental lamp posts are being made from old tin cans and concrete by Ray Lambert, park commissioner, Son Antonio, Texas. Mr. Lambert sends men to the city refuse heaps to collect discarded tin cans, which are hauled to an incinerator where the paper Is burnt from them and the cans are then pressed In a form to make the skeleton or frame of a lamp post. Around this form wood is placed and then the skeleton Is filled with concrete. LAUGHED WHEN HE LIT Tourists Will Miss This Landmark Coil. Set the switch on tap 8 (eight turns in the coupling coil) and slowly rotate the condenser knob until the desired signal decreases, vanishes and again increases. Using the small knob, pass slowly back and forth over this point until the position for minimum interfering signal is located. The filter Is now set for this one interfering station (its wave length in meters can he read from the condenser scale). Both the Interference and the filter may now be forgotten and the receiving set tuned to distance stations In the usual manner. The parallel filter is used to reduce interference from spark transmitters, static, A. C. hum and similar sources. It will also allow you to tune out several local stations broadcasting simultaneously and receive from a broadcasting station of a wave length differing by only a few meters from the nearest interfering wave. Connect the parallel filter as shown in Figure 2. Set the switch on open and tune your receiver to the desired station. Then move the filter switch to contact 8 and all signals will disappear until the filter condenser is adjusted to exactly the wave length of the desired station. The wave length markings on the dial are a help if the desired wave length is known. Listen closely for your station while slowly moving the filter condenser back and forth over the approximate wave length of the station. Use the small knob and tune carefully, because one-haof one degree on the condenser dial is enough to tune the desired station in or out. How to Get Results. Most people are not accustomed to the highly desirable sharp tuning which is obtained from this radio filter, and therefore pass over the proper setting without noticing the signal. Practice first on tuning in a loud broadcasting station. After the filter has been carefully adjusted for maximum signal strength slightly retune the receiver, making a change in the amount of regeneration, if necessary. Use of the switch: Place switch on "open to entirely disconnect filter from receiver, on S or "5" for moderate interference and on 3 for strong interference. It is often desirable when listening for a certain broadcasting station to lf Tills famous Old Bar gate at Southampton, England, a familiar sight t thousands of American travelers, Is soon to be demolished because it hampers the fast Increasing traffic. Only one car can pass through the gate at a time. Photograph of Harry Wright, who fell from the fifth floor of the Conway building, Chicago, hut landed on ids feet and laughed when horrified spectators came to pick him up, alwere broken his ankles though Wright served in the navy during the war and made a specialty of diving, and consequently knew liow to get his ht.'nnce in the ait Vernier Scale Similar to That on Calipers By ROBERT G. GARLOCK There are dozens of vernier adjusters on the market, but no vernlet scales, although there are many critical but stable receivers, and especially for which a device foi reading fractions of a scale division would he useful and convenient. Tha scale described here is a modification go BAYER ASPIRIN DEMAND Aspirin Marked With Bayer Cross Has Been Proved Safe by Millions Warning I Unless yon see the name Bayer on package or on tablets you are not getting the genuine Bayer Aspirin proved safe by millions and prescribed by physicians for 23 years. Say Bayer when you buy Aspirin. Imitations may prove dangerous. Adv. Fools are apt to Imitate only the defects of their betters. Swift Permanent roads are a good investment not an expense er merge Into one. Ready for Wave Length. After a little practice In noting the Indication of resonance by the double click method, you are ready to set your receiver to the desired wave length, say, 410 meters. Set the wavemeter at 410 meters and slowly vary the wave length of your receiving set wlilie it Is oscillating. Listen for the double click when the receiver Is In tune with the wavemeter. Move the wavemeter far enough away so that the two clicks occur very close together. The receiver Is now tuned to 410 meters. If the means of controlling regeneration on the receiver is altered the wave length will vary slightly, but this variation Is usually less than three meters. With an inductively coupled receiver disconnect the antenna and proceed as mentioned In the foregoing paragraph, coupling the wavemeter to the secondary circuit of the receiver. New York Sun. wavemeters Friction makes some wheels round, but not the wheels of life. I America Must Have More Paved Highways Almost every section of the United States is con fronted by a traffic problem. Month by month this problem is becoming more and more serious. Hundreds ol cars pass a given point every hour on many of our state and county roads. Down- town city streets are jammed with traffic. Think, too.how narrow many ot our roads are, and how comparatively lew paved highways there are in proportion to tha . steadily increasing number of cars. If the motor vehicle is to continue giving the economic service oi which it is capable, we must have more Concrete highways and widen those near large centers oi population. Every citizen should discuss highway needs oi his community with his local authorities. Your highway officials will do their part ii given your support. Why postpone meeting this pressing need? An early atart means early relief. PORTLAND CEMENT ASSOCIATION 111 West Washington Street CHICAGO of National Organization to Imprara and Exund tha Vttt ofConcntt Office, in 29 Cities Vernier Scale Recommended for Calibration. Close MBLOTODflCiDONTDElAY of that employed on calipers and may be applied to any large dial which runs true and is accurately engraved. Cut a piece of bakelite as shown In the drawing. It should be as thick as Z4fontrs the edge of the dial and fit the curve Lu Grippe . Ml.L.CO.tOtTnoiT. as closely as practicable. The curved JH.U-I I I'.'MTTl MI'BigWT edge can tie shaped on a small emery wheel, and the straight edges cut; with PARKERS a saw and smoothed with a file. Tin HAIR BALSAM ten divisions should be engraved with Removes I Restores Color and a sharp tool in the same space taken I Beaut? to Cray and Faded Hail soc. I and $l.u0at irnegrsts. on nine the dial and filled with by ftisrox Cbrra. W Vfl PaUhrcno,y. T white enamel. Accuracy Is Important Removes Corns, CaJ- HINDERCORNS in this operation. cases, ete.. stops all pain, ensures comfort to the a Vet walking epr. by mail or at The scale is easily read by the fol- feet, in Hiaeox Chemical Works, Patcbogna, M. Y. method: the Take dLl reading lowing opposite the zero line of the vernier Just as If the zero line were the ordinary arrow. Then note which line of the scale is opposite a line of the dlaL The number above this vernier line la the number of tenths of a division For example, on the Illustration the ..w Jtr J9T& reading is 21.4. Simple, isnt it? A little study will &how why this is so. W. N. U., Salt Lake City, No. 45-1Radio News. W-M- in J Dat3 , Cuticura Talcum Unadulterated Exquisitely Scented 7 a 924 |