Judge — July 8, 1922 — page 33: what you’re looking at

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

U. S. Radiotelephone Broadcasting Station (Continued from July 1) . Toledo, Philadelpbiat a ino Radio Manufacturing Co..Cincinnati, O. ‘Richard H. How Granville, 0. wate Boyer, 5 ashi Service Radio Equi “Bicetrie Equipment Co. De Forest Radio Tel. & Tel. Westinghouse El. & Mfg. Co. {Joseph M. Zamoiski Co. emt oont feauhin Tenn? Okla. City, Obla.® Minneapolis, Mian.* 1 Ind.” ‘Precision Equipment Ci Doableday-tlill Electric C Shottoa Radio Mfg. Co,...... Albany, N Wireless Tel. Co. of Hudson CoJersey City, Palmer School of Chiropractic...Davenport, La. Buckeye Radi Co... .Akroa, 0. JT THatfield Eleetrie Co. <Towa State College Newark, Simourt State Marketise Bus. Jetersoa City, Mo. {!Metropolitan Utilities District.. Omaha, Neb.* Palladium Printiog Co. Richmond, Ind.* Fort Worth Record N Washi foe ‘D. ce Mem; i Tean, ‘Kanaaa State Agril College: «Paris Radio Blectrie Co. Daily News Printing Co.. Ford Motor Co. Answers to Inquiries 0. R. A., Sexy, S. D.—Either bare or insulated al. Even with the range of It is not to be recommended tations over filly miles a jay Crry, Tex.—Six wires are by no means good as one wire for a receiving aerial. ct, Tittle to be gained by using more than one wire. Almost all radio telephone stations are licensed to use only $60 meter waves for general broadcasting pur- Iis very difficult to keep a given station tui to exactly this wave length, however, so that in practice the waves from a group of several ‘stations will range from $40 to 373 meters. This is sufficient variation to permit two or more to be beard simultaneously by. a good Feceiver without undue interference. When neighboring stations are closely tuned, however, interference occurs whenever they operate at the same time. The energy for operating a crystal detector is received from t ether by the acrial’as explained in a recent article in this Department. F. T. M., Ccno, Tex.—There is po commercial de- vice, applicable to an ordinary receiver, for the elimina- tion of static. So many prople are working on t Problem, bowever, that its solution can be confidently expected in the near future. L. C. B., Wooostock, Ovr., Cay.—Use 8215 volts pur tube when used as a detector and 45 volts when fier. Why volt or one 45 serial should be Ene crote® copsaally if Sou have al least coe stage of amplifcation. S., Dexren, [4.—A Westinghouse R. C. receiver, costing @216 complete and a Western Electric loud aker, costing $168 is the best combination for your Community House. You will not be able to bear all over the United States with th be able to results at di under septs impossible t ances up to 500 miles conditions. It is practically mirgh with any kind of an instrument Park except under very ex- ceptional eeditoas A meatier of uations ‘sam. be heard here, however, with an Aeriola Senior, which is Perhaps the best portable out6t because it ‘needs no storage battery. Its cost is 875 complete. EK, Jn, Dacuniaur, Oxta—You will be able to bear a number of stations with a two-stage amplifier, and under good winter conditions, Detroit, Pittsburgh, Schenectady, and even New York ought to be audible, provided there is not too much interference froat nearer stations. 1 would not recommend a smaller set for your locality. B. HL, Bay Crry, Tex.— ires are by no means six times as as good as a single wire for a receiving serial. In fact it is hardly worth while to use more than a sil ple wire. Almost all | broadcasting stations are licensed ‘$60-meter operation only. There are shght variations from this standard, however, and this permits several stations to operate together without serious interference. Bat if neighboring stations as Heal exactly 360-meter waves, then confusion The energy that is Clleclive in operating a crystal detector comes down the aerial, The waves sent out by the transmitting station strikes the aerial and induce in it minute electric currents. . Benwixp, Covo.—I do not believe you can wurchase a set that’ will be satisfactory in your locality Re 830, or much under 875, in fact. However, z ought to beable to make one. I suggest you read ” for Eve Scientific’ American, 233 Broadway, New Yor! tives City, price $1.60 postpaid, and subscribe for Wireless Age, $26 Broadway, New York, $2.50 a year, AMPLIFIER AND AMPLIFIREMEN Phonograph horn connected with a piece of chemical hose to radio set entertains smoke-eaters 31 Thisbeautifal machines the only brand-new (unused), stan fe typewriter with a 4-row, 42.1 key. character Unveted jeyboard that you can buy for lees than $100. 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