Judge — March 17, 1923 — page 33: what you’re looking at

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

A St. Patrick’s Day movie. Radio Department Conducted by William H. Easton, Ph.D. ubseribers to Jupae are invited to turn to us for advice regarding the selection, installation, oper Address all letters to Radio Editor, Juvar, 627 receiving act. No charge is made for this service. ion and care of radio West 43d Street, New York, giving full name and czact street addrees, In cam an anncer by mail is desired a teo-cent postage stamp thould be inclosed.” For information concer the technical details of construction of receivera and transmitters the reader ts referred to the several very excellent technical radio journals which are to be found everywhere to-day. Single-circuit vs. Double-circuit Receivers Oe of the questions that is always good for an argument in radio circles “Which is better, the single-circuit or the double-circuit rec Both have their partisans; and discussions concern- ing their relative merits often become quite as heated as those on the subject of “Ford vs. Chevrolet The single-circuit receiver is one in which all tuning is done by a single vario- meter in the antenna-to-ground circuit. In the double-circuit receiver, there are two variometers, one in the grid circuit and the other in the plate circuit, and hoth have to be operated to tune for a given wave length, ‘The double-circuit receiver is the earlier type. It was in use long before broad- casting started and is still undoubtedly the favorite of the radio ateur. Its nplexity commends it. There is n in turning knobs; and in the opinion of many, the more knobs the better. The chief advantage claimed for it by its advocates, however, is its high selectivity. Two nearby stations opera- ting on 860 and 400-meter waves respec- n be separated on the two- circuit receiver with the greatest nicety, and even heavy spark stations can be cut out, if not too near. The single-circuit receiver, on the other hand, is undoubtedly much simpler to operate. Anyone can use it, after a few minutes’ instruction, and it will locate a half a dozen stations while the double- circuit outfit is tuning in one, In addi- tion, all other things being equal, it is claimed that it will give signals that are from half again to twice as loud as tho: from a double-circuit receiver and it therefore superior for long distance work. \s to its selectivity, single-circuit en- th ts do not concede that double- circuit apparatus has things all its own Wi They admit that the s ceiver will not ordinarily separate Class A and Class B stations when an antenna over 100 feet long is used; but if the antenna is not over fifteen feet high and twenty feet long, it can do so very neatly and provide an ample volume of sound. Hence, the present single-circuit practice is to use two antennie, one a long one for long distance reception and the the other a short indoor one (preferably run around the picture molding) for separating nearby stations, A small double-throw switch permits either an- tenna to be instantly connected with the receiver. In other words, there is much to be said on both sides; and the radio world has not as yet standardized definitely on either type. Answers to Inquiries Cor Prices or Rano Arranatos— It is true that yo jot_ been able ving at it'and have gone bankrupt. As a result, their stocks are being disposed of for less than cost. "Those buying at these low prices are, of course, simply profiting | on other people’s losses, and this state of affairs will not last very long. As a matter of fac for radio apparatus is greate and ev becor through its period supply of incompe' Asis the case with built by defunct manufacturers or sold by” bankrupt ers is often the most expensive in the long run, aus IN Prusox—N. A. C., Nowtit Bran > reputable broadcasting station will give th a distinguished individual is speaking in the actual demand that it It has, however, to pass ent and get rid of over- cturers and dealers. But why mount a receiver o er has to distract his attention, the better for all concerned. Pouutry Marker Rerorrs— Frexcn Lick, <p.: The following stations (all radio telephone on 360, 485 meters except when otherwise stated) defi- nitely state that they broadcast daily reports on the local poultry and egg markets: KYW, Chicago WOS, Jet efferson Ci Cit; . Do ¢ pres of ot reports and most poultry also. Spri out’ agricultural 31 Own this GENUINE DROP FORGED STEEL ASTRA AUTOMATIC uy direct from sole ve 1 US Importers and~ The ASTRA Is tho finest an Pist and the equal of any similar American weapon Tetalling at $15 and $25 up! It 1s the standard of the Spanish Army, and after exhaustive tests was adopted by the French Army during the war. ‘The ASTRA has heretofore always been sold through retail stores, but the competition of cheap ¢ast-Iron_ pistols has forced us to sell Oi THRER PROFITS Cast fron guns are very danger- THE ASTRA IS OF Drop-! Steel Throughout! Before buy- ing any weapon, INSIST on this guarantee. We also absolutely’ guarantee the ASTRA against inferlor workmanship! If are not entirely satisfled, return within 10 days and we will im- mediately refund your money! $ 95 25 cauiner O95 32, CALIBER 8 AS sorostinie O28 wise yl Ten 'Q-25 Both Models Shoot Any Standard Ammusition 25 cal. model, 444 In, long by 334 In, high—an {deal gun for a man or woman. Substantial 32 cal. military model, 6 }5 in. long by 4% in. high. Blue steel, beautifully balanced. swift—accuratet Superb workmanship and materials throughout. A gun that you will be proud to own, Protect Your home and loved ones. SEND NO MONEY —unless you wish. Fill out coupon, write name and address plainly, showing gun you wish. We will ship by return ‘mall. Write for free catalog. MAIL THIS COUPON TODAY ! California ‘Trading Company Dept. 65. Terminal Bldg. SS Angeles, Cal. In accordance with the terms of your advert ise- nd me... ASTRA AUTO- I am enclosing money order for...... ++ OF, I will pay postman on arrival. Be a Railway Mail Clerk, $135 to $195 a Month “omnmon education sufficient. Men—boys 18 up. WRITE IM SREBIATELY tor free lat of Goverument portions obtainable. FRANKLIN INSTITUTE Dept. R250 Rochester, N. Y. these probably cover eggs and injury or 8 Premium $10 yearly. seller. Write quick for territory. Dept. RE, 196 Market St, Newark, spare time. UNDERWRITE!