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Show THE SAUNA SUN. SAUNA. UTAH FISHER. BODIES GENERAL MOTORS In reviewing the long line of circuits which have forged to the front in recent months, each one with its own special attributes claiming their due amount of attention, one cannot neglect considering the very popular . Ilammarlund-RobertsBuilt up around the older famous Roberts reflex, it won immediate' approval, and in its present form is satisfying its countless users. Yet, when one looks over this circuit, just as with others, there is the constant urge for Improvetner , revision, modification, and slight alterations to make it better. The Radio Broadcast Magazine laboratory, in experimenting with the Ilammarlund-Robert- s version of the original Roberts circuits, has tried out numerous changes with the idea of improving the circuit. Some of the changes merely consisted in replacing the dials with those of a vernier type while other changes were made in the actual circuit arrangement. According to John B. Brennan, technical editor of Radio Broadcast, who describes the changes in a recent issue of that magazine, it was found that the substitution of a different form of regeneration in the detector circuit, in place of the variable tickler method, would permit smoother control. It would, also eliminate the changing field set up by the variation of the tickler coil position. The method found to be most successful, and involving the least number of changes, was the condenser-feedbacregeneration system, involving only the addition of a small variable condenser of y the midget type, and a choke coil. Removing the Parts. In making this change, the entire detector coll unit is unsoldered from Its connecting leads and removed from the panel. Then the tickler coll and its shaft are removed by simply cutting off that part of the bakelite strip which supports the shaft and its bearing. The bushing, located on the top of the bakelite mounting strip, Is removed from the cut-of- f section and, machine screw, is by means of a fastened at the bottom of tiie mountThis screw replaces the ing strip. one used to hold the coil between its insulated support strips. Now. at that end of the secondary coil at which the NP coil is located, a tap is made, 13 turns from the bottom turn. This tap S," may be just below the letter which indicates the secondary of the detector coil, on the' accompanying diagram. The detector coil may now be laid aside. A Hatnmarlund midget condenser is mounted in the hole formerly taken up by the shaft of the When this is accomtickler coil. plished, the detector coil mounting holes are spotted on the main panel. These holes are drilled and countermachine screws sunk for the which screw Into the mounting bushings on the coll unit. filament when the phones were used on the first stage. Filament circuit jacks did the trick. To employ this type of jack in the circuit shown, sometimes necessitates alterations being made to the jacks obtained, however. In the circuit described in the Radio Broadcast Magazine article, two No. 105 Carter jacks were taken apart and the blades rearranged so as to correspond with the blade positions as shown In the acAs a companying circuit diagram. final circuit change, Mr. Brennan recommends that one of the parallel tube sockets in the last audio stage be removed and its amperite wired in the circuit to control the stage. Then in the remaining last or UX-11tube stage socket a UX-11- 2 is employed as a power stage. It will be found that the grid-plat- e shunt condenser for the last stage may be removed when the power tube is employed. pudio-aniplifi- radio-frequenc- THE NEW CARS --THE NEW BEAUTY 7 -- Body by Fisher is the outstanding charm of the new General Motors cars now commanding public attention. Into the new models, Fisher has introduced new standards of beauty to match the highest standards of safety, comfort and convenience. Have Short Grid Wires; Others May Be Bunched The Importance of short and direct connections between the various parts of a radio receiver is in general rather exaggerated by some radio writers. The admonition to keep wires short and straight is offered with all good intentions, but in many cases it drives amateur constructors into making cubist-lookinsets, with the components arranged in odd positions so as to make their interconnecting leads straight and direct. Really, the only important wires whicli must be kept short and free of all others are those running directly from the grid posts of the tube sockets to related instruments, and even then the tubes are the only ones at all critical in this respect. The particular connections whose brevity is conducive to good results are those from the grid ends of tuning inductances to the G terminals of the respective tube sockets and interspersed grid condensers, from those same ends to, the stationary plates of the related tuning condensers or from the condensers to the grid posts If the connections are made that way, Mso to be included In the list are the wires from the P posts of tube receptacles to the P sides of transformer primaries. It is advisable, but not so urgently essential to keep the grid connections on the audio amplifiers short. However, if they do take a few twists or lio across some other wires they will not seriously affect the operation of the receiver, as similarly mistreated wires in the magnifiers are certain to do. All the other wires in a set, includB ing the filament returns, the A, and C battery and rheostat and switch leads, may be bunched together Into one cable without harming the outfit in the slightest. There is no need at all for stiff busbar and carefully separated connections; insulated solid or flexible No. 18 wire is just as good and can be handled much more easily. Some raido fans may find it difficult to reconcile these facts with some of the things they have read about radio, but they are facts nevertheless. The practicability of the bunched wiring method is being recognized more and more by fans and manufacturers alike, and It probaldy will not be long before delicately installed, d busbar wiring becomes the mark of an old set. g k radio-frequenc- As the new cars are nounced, Fisher leadership becomes inescapable. Common Complaint radio-frequenc- y Waiter, my spoon is missing. Yes. sir, we lose quite a few, too. radio-frequenc- y Cuticura for Sore Hands. Soak hands on retiring In the hot suds of Cuticura Soap, dry and rub In Cuticura Ointment. Remove surplus Ointment with tissue paper. This Is only one of the things Cuticura will do if Soap, Ointment and Talcum are used for all toilet purposes. Advertisement. radio-frequenc- y 6-- obtain regeneration satisfactorily with these alterations, it is necessary to include a choke coil in the audioThe transformer primary circuit. y choke is employed to keep the currents out of the transformer primary circuit so that the only path for these currents to take is through the capacity element employed for regeneration. This choke coil may be mounted on the in the place left vacant by discarding sockone of the parallel audio-stag- e ets, as Is explained later. It will be noted that the bypass condenser employed to shunt the primary audiotransformer has been eliminated from the circuit. At Reduced Volume. times it is found advisable to Many operate the receiver at reduced volume. In its original state, the only way to accomplish this was to increase the value of resistance In the filament circuit of the amplifier tube, or loosen up on the regeneration or sensitivity control. Quality sometimes suffered when the former method was employe!?. Selectivity and sensitivity suffered in the latter. As a final refinement for volume adjustment, and also as a tone control, the rheostat and fixed resistance for the amplifier stage are cirremoved. In the cuit, their volume control functions are taken over by employing a variable high resistance of the value of 500,000 ohms in shunt across the secondary One of of the first the objects of this shunt resistance lies in its tendency to give the ampliradio-frequenc- sub-pan- While we read history we make tory. Curtis. 25g FREE CLOTH made of especially woven fabric Crepette for only 10 cents and two weeks dusting supply of Liquid Veneer. Nothing like It for dusting. A few drops on Tour cloth removes ALL dust, dirt and blemishes INSTANTLY, and leaves your plDo, furniture, woodwork spotlessly clean and beautifull r polls bed. Moreover it preserves the Piano people use it to Imfinish indefinitely. prove their brand new instruments. 8end for today. Youll be delighted. your FKKH bottle Remember, we include a big 26c LV Lust Cloth If you send 10 cts Don't miss this opportunity. .Buffalo Specialty Company Some Hints on Care of Your Portable Outfit 8 Liquid Veneer BJdy. Buff.le, N.Y. Here are more simple rules to take care of a portable receiver on vacation trips: Be sure all wires are tightly soldered and the receiver works perfectly before it is taken on the trip. Carry a couple of extra vacuum tubes and spare dry cell batteries If the trip is one which makes it impossible to find a suprly bae at a reasonable distance. Handle the loud speaker with care and see that all aerial and ground connections are made just as good as possible. radio-frequenc- y EYES HU Don't ignore (he dangersign of aching red lid, blcn Fhot eyeballs Mitchell Eve Salve removes irritation, reduces inflammation soothes pain, BALL A KT7CVEL H7 Waverly PI., New York ey, CORNS audio-amplifi- Oldsmobile, Pontiac the greatest cars on the market in their respective classes and attached to them the magic symbol Body by Fisher. Magic because Body by Fisher is the buyers greatest assur- ance that here is supreme quality and value. Device Shows Strain Incurred by Flyers Instruments have been devised for measuring an airplanes speed, altitude and direction ; now conies a gauge for the axiator himself, called the accelerometer, an intricate little apparatus which sliow3 how his body reacts to the crafts bounces, sudden turns and dips. It Is the invention of Lieut. Janies II. Ihiolittle of the engineering division of the army air service, according to Popular Mechanics Magazine, and it is placed under the pilots seat. Stresses and strains on his body are outlined o.n a small strip of film. Lieutenant Doolittle lias found that a flyer can stand instantaneous movements of the plane without ill effects, but comparatively slower dips and dives, of continued several .seconds, sometimes cause him to lose his faculties. In rounding a pylon at high speed, for instance, the blood is driven to the feet. A pilot in the pink of condition can stand tills, but about 12 seconds is the limit. corns, tender toes and pressure of tight shoes. L4 3ru,,r home, I X;. I inirken your )y at d ;V" How to Connect a Transfonner-Couple- I d C Battery in AF Amplifier. Radio World. j CHEMISTS, HESSfQ-EL- W. N. U-- , Dept. diseas- e-bearing Kills AH Household Insects Flit spray also destroys bed bugs, roaches and ants. It searches ont the cracks and crevices where they hide and breed, and destroys insects and their eggs. Spray Flit on your garments. Flit kills moths and their larvae which eat holes. Extensive tests showed that Flit spray did not stain the most delicate '' fabrics. By the. Forelock Mrs. Charles oil the Murray, queen, said at a reception: Yes, it is true that Im the only independent woman oil operator, and its true that my company lias been paying 000 per cent dividends. Success? Well, to succeed nowadays you must he very quick take time and everything else by the forelock like the young man at the sea-- " shore. Darling, the young man said to a girl witifwhoirr lie was silting out a dance, darling, 1 love you. But, said the girl, my goodness me, we didnt meet till half an hour ago ! said the Yes, I know, darling, young man, but I'm only down here for the week-en- Flit is the result of exhaustive research by expert entomologists and chemists. It is harmless to mankind. Flit has replaced the old methods because it lulls all the insects and does it quickly. Get a Flit can and sprayer today. For sale everywhere. STANDARD acy DESTROYS Flies Mosquitoes Moths Ants Bed Bugs Roaches k REo.. 751 t , MZ.MFHIS, Salt Lake City, No. TLNtt. 26. nr. jmwi And is ' red? is scared to death of her. No man is quite so good as Ids should be. son-in-la- J Removes Dandruff Slops He resiling 1 Restores Cocr and to Gray and Faded Hair Beauty wa and SI i0 at DiufMiRte V Y TT,nfrr t .PiU itr Removes Corns Cnl- louM, etc., siods ad pain, en .tiros con.fort to tlielfc hy mail or at Drrgfept, traces va king g.s8. IL&cox Diiciuiuti Wonts, Datcnogue, N. Y. 1.A 1)1 1,: WE l'A $10.50 I KK IHMiKhD tc Kw.i grert'iig cuids. Free pirticulnrs lor ! K . i. Hop s. YoKK IIJ.K Dept. V, 6t4 Lexington Avenue, New York. S'Dlrs- Thc yellow can black with tha 6aid" iiiw mm inifiinr- PARKERS v jenr daughter happily marYes. rather! Her husband trails HAIR BALSAM w Bather guarantee. OIL CO. (NEW JERSEY) iPlPk California. ovpiuO vea rs by licit!Color r Drug-fis- j l vd Monfv-b,o- IkAfKLET OASQH At vour j m y hair.cndcaTiv. of In nr J Flit spray clears your home in a few minutes of flies and mosquitoes. It is clean, safe and easy to use. Hubby, I may be a lit'le late for I'm taking a taxipiane to dinner. , Pads to do a little shopping. May lie a little late myself. Been imited to try some mw golf links in At drug Is, .rrf A let mosquitoes ruin your summer. Keep DONT bed rooms free from all insects. Spray Flit. In IS30 Scholls Jp Xino-jjad- s fier a flatter all frequencies will he amplified alike. To make it possible to change readilj A ,rpray a. day - Keepx Jkcetr away . Quick relieffrom painful audio-transforme- r. from the last audio stage to the first audio stage required nothing more than inclusion of a jack in the primary circuit of the first stage audio-trans- former. At the same time it was found desirable to have some autc-n.an- a of turning off the last his- DUST L-- V right-angle-ben- radio-frequenc- y characteristic, that an- , Look at the names Cadillac, Buick, Chevrolet, Oakland, radio-frequenc- y 2 To y r iTT2 'BOOKS Deseret Book ii Ea.t i.. Co, So. Temple, Salt Lake City, Utah liAM.fc. or Itl i (.1 .N.-- iKHiS, TUOLis M'muk. conu hand article of c!ik, or any tnt uqh our niepinet s. What haq In a U Mai ice. j jou bargain, i.i;t r and 1c 'Inal r in In amps Mill Am S b WWHA.N'JL GLIB l?2 Ann Atlanta G. VI 1 I ! T cur patent Ford A(iKM t'Xiet.idi IhuLc. hxtu io gDiO L'uc t: HlVr. PfelALL BROd Iu? juu i 44 kl blPiLY COMPANY. ALTON, ILLl-iQi- |