Judge — March 31, 1923 — page 32: what you’re looking at

Machine-transcribed from the original scan — historical spelling and the odd misread are preserved.

One Family in Every Nine! Enough automobiles were built last year to enable 2,300,000 families in this country to buy a new car. 1922 was a record automobile production year and to-day there are more models and makes than ever from which to choose. The selection of the proper car best suited to your own individual req ments is an important r If you will fill ou completely, and ms partment of Jupce, ity, you w ae receive ex biased advice at no cos COUPON Motor Depa’ Juvce st 43d 'St., New Yor In a house where there are children you'll have to put up with a few natural hazards. RADIO DEPARTMENT Subscribers to Jvvar.are invited to turn to us ‘for advice regarding the selection, installation, peration and care of radio reciting set | No charge is made for this service. Address all letters to Radio Editor, Supe, 627 West 43d Street, New York, giving full name and exact street address. ‘In case'an answer by mail is desired a tio-cent postage stamp ahould be inclosed. For information concern ing the technical details of construction of receivers and transmitters the reader is re- Jerred to the several rery excellent technical radio journals which are to be found every- where to-day. TRIAL Cut out this ad and mail it to us, with your name and address (no money); and we will KARNAK RAZOR by return m pu may use the razor for 30 days FREE; if you like it, pay_us $1.85. If you don’t like it return it. SEND NO MONEY. MORE COMPANY, Dept. 495, St. Louis, Mo. $25 Weeklyin Spare Time Let us send you FREE, full particulars regarding our course, preparing you in a few weeks’ time. for al work. Includes Reporting, News Writing, Bditeril Werk. Special Correspondence, ‘Sports, Publicity, ete. Individual instruction from’ Experts New on the Staffs of New York Daily Papers. Circular and all information free. Write tc Lebtibd deed School |. 32-M, 276 Fifth Avenue Reed certain INVENTORS isis facta before applying for Patents. Our book, Fae Geen sen ONLY ONE New York, N. Y. who derive lare- profits know Polley Dally Mean Profit. 8% Your skin ea be quickly clearel of Pimples. Black- heads, Acne a uptions on the face or bo'ly. larged Pores, in. a t. A wT cured ‘amlcted® for 15. years In of the above blemish idg., Kansas City, Mo. moself after bet says | can clear your E 3 Givens, 224 Chemical of Journalism | | sos ~ “~@ . | Receiving Under Difficulties | by William H. Easton, Ph.D. Aurora Borealis is a rare and usually an inconspicuous visitor in most United States latitudes, but when it |does come around everyone in the radio audience knows it. Recently, one of the nearby broadcasting stations had a prog um we were particularly anxious to hear, but it so happened that an aurora turned up on the same evening. We stuck steadfastly to the receiver for over an hour, but it was a nerve-racking perience. The din was worse than ever accom- panied a summer thunderstorm. followed crash in unbroken s WJZ at thirty miles distan voiced hart . but it met its Waterloo night. ching from a long out- side aerial to a short indoor one helped to » extent, as it cut down the static noises sufficiently to let the voice of the station come through; but then another difficulty became manifest. It was im- possible to keep the receiver in tune. At |no adjustment could the signals be heard |distinetly for more than a few seconds at a time. At one moment the tubes | would howl, and at the next, everything Jexcept the static bombardment would |die away to nothingness. Only by un- asing manipulation of the filament lee 30 theostat and the tuner could even half of the broadcasting be heard. One of the plausible explanations of this effect is that the electromagnetic ves forming the aurora at times rein and at other times oppose tli station’s waves, so that the received vary constantly in intensity. a weak magnetic disturbance, le to be detected in any other y, could effect the faint waves of listant station, thus causing the famili and annoying phenomenon of fading. However, this theory of fading has not been generally accepted, many believing it to be due to the reflection and refrac- tion of the clouds and atmosphere. WD-11 Tubes 0 MANY inquiries about the WD-11 electron tube have been received recently that it is evidently desirable to describe this tube in detail. The WD-11 tube is generally known as the “dry-cell” tube because it can be operated by means of an ordinary thirty- five cent door-bel y-cell, instead of the storage battery needed by the standard tube. This does away with the expense of the storage battery and battery id with the trouble of constant also makes possible the use of receivers in places where electricity for charging cannot be obtained. In size the WD-11 tube is somewhat smaller than the standard tube and has a very different base, so that it does not fit standard tube sockets. Adapters can, however, be purchased at any radio dealer's for from fifty cents to $1 each, which permit use in almost every electron-tube receiver. It can be used for both detection and amplification (both radio and audio), and is especially suitable for the latter purpose because of its very quiet oper- ation. Some confusion has been caused by the fact that recent tubes of this type are labeled WD-1I1A, the being comicbooks.com