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Show THE SAUNA SUN. SAUNA. UTAH Pan-Americ- Salute to the Colors an i f See Shields and One R. F. Stage in Future Corpora! Znocngnl of (lie Brmy music school sounding ibe Sulute to the Colors" when the flags of the twenty-on- e American republics were displayed at the union In Washington before a group of prominent Latin Americans started on a nation wide tour of the United Statesi Pun-Ainerk- I h B Eliminator Is Very Useful Part radio-frequeuc- y Device Serve to Harness Usual Electric Lighting Current By CHARLES GOLENPAUL ..HaVsf-js- There is nothing really complicated It about the usual IT eliminator. serves to harness the usual electric lighting current, obtained from the nearest socket or convenience outlet, to the radio receiver. In place of B batteries. Just how this Is accomplished Is worth knowing by those s now enjoying a B eliminator, and by those contemplating the early purchase of such a device. To begin with, the usual alternating current that comes from the socket or convenience outlet cannot be employed for radio purposes. It Is cui-rethat flows first In one direction and then In the other, changing Its direction of flow at the rate of many times per second. Such undecided cur-ren-t. If we may term It such, could not be Introduced In a radlp circuit without causing havoc. So It is obvious that the alternating current must be straightened out or made to flow In one direction only. Through Transformer. The first Btep Is to pass the alternating current through a transformer which steps up the original voltage to twice or more Its potential In order to operate the mechanism that follows. The current Is still alternating In character, despite passing through nt i Sm- Crazy Man Dynamites School, Killing Forty-Fou- r the transformer. The current from the transformer Is Wreck of school house at Rath, Midi., which was dynamited by of whom were children, were killed and many injured. CHEESE MONUMENT demented farmer. Forty-fou- r person 97 Mexican Boy Scouts Take Long Hike How copper shielding prevents loss In selectivity as the sensitivity of a radio set Is Increased, Is described by Robert F. Gowen of the Institute of Radio Engineers In a survey of magnetic shielding prepared for the Copper and Brass Research association. Pointing out that the selectivity of a set gats worse as the sensitivity becomes higher, Mr. Gowen explains that adding stages of to provide Increased sensitivity broadens out the tuning so that when the slguals are delivered to d tector tube, there are usunlly mixed with them signals from other stations operating on nearly the same frequency. This loss In selectivity results from the fact that stages added are usually damped or neutralized lu order to prevent oscillation due to lnuer-stagfeed back of energy from the coupling between the Inductances used." Many schemes are used to prevent this feed back without excessive damping and, according to the survey, y when more than two stages of are employed the problen becomes more difficult It becomes necessary to use magnetic shielding to prevent coupling between the Inductances of the set and to prevent the loss in selectivity as the sensitivity Is Increased. Experiments show that Inter-stag- e shielding Is. not enough, and Mr. Gowen declares that the day Is not far distant when all receivers will be Inclosed in completely shielded copper cases. Otherwise It will not be possible, with broadcast stations working on superpower, for a set In a congested transmitting area to be affected by the desired station alone." Stromberg-Carlso- n is cited as one shielded who has manufacturer enough to make It worth while and has used sheet copper for shielding. Indications are that battery leads must be shielded eventually also. Engineers and manufacturers are now beginning to see that the trend toward the Ideal set of the future Is to reverse the present practice of building supersensitive receivers of a great number of tubes as these receivers require an excessive amount of power supply and maintenance with elaborate shielding to prevent Inter- now led to a most Ingenious device which we may call an electric turnstile. It Is similar In action to the turnstiles used In subways and electric railways for the purpose of letting persons pass through In one direction but barring them If they try to pass through In the reverse direction. Such an electric turnstile Is called a rectifier. In the usual B" eliminator either the Raytheon or Reetron rectifier Is employed. The former Is a gaseous conductor tube, without a filament to burn. The initial current causes a certain breakdown or Ionization of the gas, which establishes a conduction of path for the one-wa- y the alternating current In the case of the Reetron, a filament Is employed, and the particles or electrons given off by the heated filament metalestablish the one-wa- y bridge for the alternating current. Some B eliminators employ chemical cells which have tha one-wa- y conduction property. Filter Stops Ripples. e Most B eliminators are enmeans which the that rectifiers, Haf-wav- e I ms The monument erected in the little Iowa c Cfcmoobert, France, to Mine, llaret, the first maker of the cheese that has made itself world famous. n box of the Quite appropriately Cheese was placed at the base of the t Lift. GIVES OUT THE NEWS Gregario Garcia (left) and Jose Escobar, Mexican boy scouts, who have Just completed a hike from Mexico City to New York, bringing greetings to the American scouts. The photograph was mnde at the White House where they cttlled on President Coolidge. High School Boys Practical Builders fier Is flowing In one direction only. Because of the turnstlld action, It comes In pulses, so that It Is called pulsating direct current. If applied to delicate radio circuits these lfttle pulsators or electric ripples would make their presence known by excessive hum. So the current must be passed through a filter to Iron out the ripples. The filter consists of two elements, namely, choke coils and filter condensers. The choke colls serve to check the pulsating current, while the filter condensers serve to store the current Is balance electrical A beautiful struck between chokes and condensers. It Is as though we were employing a dam to control the spring freshets, which would otherwise pour down a valley as uncontrollable floods. The chokes are the dam, while the condensers are the impounding area or reservoir behind the dam. As a result of the damming action the freshets are converted Into a steady flow of water throughout the year for Irrigation and other useful purposes, Just as the pulsating current from the B" eliminator filter is converted Into a steady flow of current, quite free from hum. The Register Bank. Now the current Issuing from the filter circuit would be ready for use If Just the full output voltage were desired. However, It Is seldom that a radio receiver can employ the full output at all times. Generally, there are various kinds of tubes requiring dlferent voltages. Furthermore, n cerfain minimum load must be maintained across most filter circuits and rectifier tubes to Insure proper and safe operation. Hence the filter outreput Is now delivered to a sistance. which In terms of analogy Is syslike a gatehouse of a water-suppltem, In that It distributes the flow of current over different channels. y Michael J. McDermott of Massa-fhusett- s has been appointed chief of he division of current Information of the State department, succeeding liugh It. Wilson, appointed minister to Switzerland. Mr. McDermott has been acting assistant chief of the division, which bandies all news of the State department. Two Stations for India The carpentry class of Roosevelt high school In Los Angeles, Cut It., gets practical as well as theoretical knowledge of the trade. The boys are shown above erecting on the school grounds a house of their own design that will be used by the domestic science department. Before the end of the year two large broadcasting stations In Bombay and Calcutta will be In operation by the recently licensed Indian Broadcasting onpRiy. a report to the Department of Commerce stutes. ALWAYS TIRED Now in Good Health by Using Lydia E. Finkham Vege table Compound I hare takes Lansing, Michigan. Lydia E. Plnkhams Vegetable Com- pound whenever I needed It When I first need It I was so bad I could hardly walk across the room without crying. I was tired all the time. I think my trouble was coming on me for six months before I realized It I read of your wonderful medicine in the radio-frequeuc- y o radio-frequenc- stage oscillation In the stages. The new line of development Is to build a simple receiver embodying not more than one stage of highest efficiency and selectivity In a thoroughly shielded coppqr cabinet. The highly and efficient Browning-Drakradio-frequenc- y requency - my husband paper, and bought me a bottle, and after the first few doses I felt better, so kept on taking it until I was well and strong. I take It at times when 1 feel tired and It helps me. I will always have a good word for your medicine and tell anyone what good It has done me. I recommended It to my neighbor for her girl, who is sixteen years old, and It was Just what she needed. She Is feeling fine now, and goes to school every day. Mss. E. F. Bassett, 216 South Hayford Avenue, Lansing, Michigan. Do not continue to feel all and half sick when Lydia B. Plnkhams run-ddw- n Vegetable Compound Is sold by druggists everywhere. It Is a root and herb medicine and has been used by women for over fifty years. OVEEi 200 YEARS ET(Q)E1 haarlem oil ha been a worldwide remedy for kidney, liver and bladder disorders, rheumatism, lumbago and uric acid conditions. E2E35GSI3 correct internal troubles, stimulate vital organs. Three sixes. All druggists. Insist on the original genuine Gold Medal. Iont Negu Inflamed eyelid eye Irritations. And sets are good present-daof this deslgu. It Is safe to assume that eventuully the shielded cabinet will Include the power unit (or butteries until power units are fully developed) so that there cun be no clinnce of pickup" from cubles employed for connection." or other You will a soothing and safe In MITCHELL EYE SALVE. remedy HALL A RT7CKEL New York CHy e at all druggists. y examples Kill All Hit. Flies I UlSUASK DAISY H.Y K.LLER attract an Neat, clean, ornamental, convenient and PUd auywhera, uU all from your dealer, HAROLD SOMERS full-wav- tire alternating current Is passed through by. means of a double turnwith one gale stile arrangement, thrown open while the other is closed, and vice versa, for greatest efficiency. rectifiers present only one turnstile, which Is thrown open only at every other Interval when the alternating current Is flowing momentarily In the right direction. Now the current that has passed, through the electric turnstile or recti- MRS. BASSETT Plug-I- n Brooklyn N. Y. Mounting for the Coils Short-Wav- e very convenient und Inexpensive colls set of mountings for short-wav- e can be made from a few UX tube few strips bases, a UX socket, and of bakellte. The tube bases are cut off as Illustrated and soldering lugs are soldered to the tops of the prongs. Then a hole Is drilled In the center of the tube base and It Is bolted to thr bnkelite strip. Care must be taken thkt the head of the screw does not A skin soft, while, lovely, by using Resiraol Not of the Lounge Variety The Philadelphia zoo has received a lizard 9 feet long, weighing 300 pound, said to le 100 years old. From thfe description, we Judge that this is not oue of the variety, of lounge lizards. well-know- n Thrust Upon Him I sometimes wonder," sighfully said t, Tennyson J. Daft, the versatile why I was born a poet? You weren't, meanly replied old Ununton Grlmth. Kansas City Star. verslfl-catlonis- Lines She 1 draw the line at kissing. He I see you do. From the looks )f It your lipstick must have slipped. How to Mount m-Tube Plug-I- n Coils in a 8ockeL Vacuu- Shipworms are relatives of the oys- ter and dam, but are eaten in only a project above the surface of the strip, so that It will not come In contact with the coil. This strip Is drilled at the ends and the coll Is bolted to It by another Btrlp of the same length. The socket Is mounted on one end of a wider strip and the primary on the other. The mounting for the primary Is made out of a piece of 4 Inch bake-litsupported by a bracket which Is made from a piece of sheet brass and a piece of brass tubing. The coll Is bolted to It by another strip of the piece of bakellte. Two pieces of heavy copper wire are fustened tightly Into holes In the piece of bakellte. These are used as terminals for the primary. If a subpanel Is used the socket and the primary may be mounted directly on the subpanel. Radio New?, -- e, Should Be Tapped Alone If using a fixed crystal as a detector, let It fit Into a pair of clamps rather than attaching It rigidly to the rest of the set-uOccasionally, In order to enjoy the best In reception, It will be necessary to tap the crystal to bring together new sensitive spots. If this tapping Is done while the crys tal remains booked In the circuit, thr rest of the set suffers. Rome connec lions tuny be Jarred loose. Tupping the crystal while removed from it . clamps obviates this poss'bIMty. few parts of the world. The weak man Is apt to be restless; -- the great man always tranquil. Takes Out allpain instantly Y Dt. Scholls Zino-pastop nil pain quicktr than any other known method. Take but a minute to quie? the worst corn. Healing starts at once. When the corn is gone it never comes back. If new shoes make the spot touchy again, a Zino-pa- d rtops it instantly. Thats because ds Zino-pad- s remove the cause pressing and rubbing of shoes. are mediDr. Scholls Zino-pad- s cated, antiseptic, protective. At all druggists arid shoe dealers 35c. DZ Scholls Itino-p&d- s Cut tne QTtthe pain if genet |