Judge — July 22, 1922 — page 33: what you’re looking at

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

together. Sometimes, even the artist is at fault. Certain voices do not transmit well. The studio manager in such cases will cut the performer short as soon as he discovers what is wrong. In all cases of interference and poor transmission, the trouble is confined to a very definite point on the tuning scale. If the trouble disappears when some other station is tuned in, but reappears as si as the tuner is brought back to the origi nal adjustment, the owner of the receive: can feel assured that his instrument is not at fault. Troubles at the receiver will be dis- cussed next week. About Electron Tubes 'HERE are two kinds of electron tubes, known as “hard” and “soft” tubes respectively. Hard tubes are those with a high vacuum. They are suitable for use either as detectors or amplifiers. When used as detectors their plate voltages should not exceed 2214; but when used as amplifiers, they give better results with plate voltages of 40 or more. Or, to put this in another way, the tube when used as a detector should have but one “B” battery connected to it, while the tubes used as amplifiers re- quire at least two and, in some cases three or four, “B” batteries. Soft tubes contain lower vacuums than hard tubes. They are better than hard tubes for use as detectors, so that the ideal arrangement for a two-stage receiver is to insert a soft tube in the detector socket and hard tubes in the amplifying sockets. Soft tubes can be used for amplifying in emergencies, but cannot be recommended for this _pur- pose. Twenty-five volts is the high- est plate voltage that should be applied Underwood & Underwood. The wireless wizard, Guglielmo Marconi, dances on his toes to broadcasted music aboard his marvelous, floating wireless laboratory, Elettra He steps one short wave length at a time to soft tubes. If subjected to higher voltages, they will squeal, and in addi- tion, are liable to burn out. A blue light in a soft tube is a signal that its plate voltage is altogether too high andj that it is liable to immediate destruc- tion. The simplest way of distinguishing hard tubes from soft tubes, when one is unfamiliar with the type number of the various makes, is by the plate vol- tage which should be stamped on the cartons. If, however, this mark is omitted, appearance will sometimes be a guide, since all soft tubes are trans- parent, like electric lamps, while some hard tubes are of an orange color, due to a chemical used to extract the last traces of oxygen within the bulb. But other hard tubes are also transparent; and in cases of doubt, experiments must be made with various plate voltages un- til the one giving the best results is found. Electron tubes cost from $5 to $7.50 each and are very delicate. ‘Ihey should always be handled with great care and should never be lighted more brightly than is necessary for good reception. With luck and good management, how- ever, they should last several months before burning out. Stations Heard Port Elgin, Ontario, Can.—KDKA, Pittsburgh, Pa.; WPB, Pittsburgh, P: WGY, Schenectady, N. Y.; WWJ, De- troit, Mich.; NOF, Washington, D. C.; WGR, Buffalo, N. Y.; WJZ, Newark, N.J. Sidney, N. S.—WJZ, Newark, N. J.; KYW, Chicago, IIl.; WGY, Schenectady, N. Y.; KDKA, Pittsburgh, Pa.; 2XJ, Deal Beach, N.J.; KDOW,S.S. America; WBZ, Springfield, Mass. Easy to Play Easy to Pay hone Easiest of all wind instru- mentate play and one of the \ most beautiful, You can earn, the & scale in an hour’s y cor tae ot, sat Free Trial icy Beecher Instrument without paying one ce, try it six day: Ged, pay: fs si alee eoPrenaees are played with Buestier in ‘nmremente rask for er pretures of jation’s Record Makers, After nearly 300 years’ string in- the Saxophone Book Free supremacy, Hip are almost entirely displaced bj ophones in all nationally popular orchestras. Our Free! cophone Book tells which ‘Saxopbon takes violin, cello and bass parts and roany other things you would like to know. Ask for your cot pS Mention the! fostramant it interested in and a complete will be mailed free. BUESCHER BAND INSTRUMENT CO. Mane of Everriiog s Gand and Orchestra instruments ot! 4857 Buescher Block ELKHART. INDIANA Sax Invented the Saxophone Buescher Perfected It -Your Choice! Keen Kutter knives give you wide choice to se- lect the exact knife that suits you. Keen Kutter quality is your best assurance of long satisfaction. Simmons Hardware Company KEEN KUTTER LS ota AY Pee Shan ever sever balers. £0 $10,000 Annually sree eae ae Seeeeriari ner oe pera ctr See = mae “Bend fe _ Dept. 782-L Bt ekicese Shave, Bathe and Shampoo with one Soap.— Cuticura Caticura Soapisthefavoriteforsafetyrazorshaving. INVENTORS Ze for Patents, area icc Sense foe Genet Ber" SHED a who derive ie Sell our. wonderful to, wearer—all one ‘Yin.00 cheaper sodependiect Drices. You keep de Er deposits verything Swateh outfit territory for hustlers. STB. SIMPSON, tne, Bop 130, B21 W. BANE BT, CCAD comicbooks.com