Radio Digest (Jan-Oct 1926)

RADIO DIGES T— Illustrated family /cadio J rouble Jree Trouble same as 6, but which is not caused by tuning. Poor connection to aerial or ground, aerial swinging or rubbing against some object, loose loop aerial connections, loose, tube contacts, dirty tuning condenser plates, defective detector circuit jack tubes burned too bright, not enough grid leak. Signals clear in detector but distorted in amplifier. Too little B battery on amplifier, too much B battery without proper C battery bias, broken wire in amplifying transformer , poor socket contact, transformers too close together, too many stages of transformer coupling, too high ratio of transformers, transformer connections Signals "^s^ \ reversed, good with detector , but faulty when using amplifier. The A battery in poor condition, audio transformer reversed or burned out, poor spring contacts in amplifier sockets, polarity of A battery reversed, C battery reversed or disconnected, short circuit or moisture in fixed condenser across primary of the first audio frequency transformer, or defec Tubes ^^»_ ^ve Ja°ks or do not •^^^""^^■SSSSSSwT^yxSSiv tube, light. This may be caused by a depleted or dead A battery, defective rheostat, dirty or poor socket contact springs, burned out tubes, broken wire going to the A battery or rheostat, or A battery connections wrong. Same as 8 but not affected by tuning. Too much filament current, too much detector B battery, short circuit in grid condenser, improper grid leak, L poor socket spring contacts, transformers too ' close together or of too high a step-up ratio, too many stages of audio amplification. <s v® Wavering signals. Leakage in aerial due to swinging or contact with some object, sooty, dirty insulators, loose bearings in condensers, poorly soldered wiring contacts, or possibly a "friend" blooping. ml Howls, hisses, effected by tunin g . Too much B battery, tickler advanced too far, tubes too bright, incorrect value grid leak, broken wire in tickler coil, poor ground or aerial Knocking, connection, or dirty scraping condenser plates. scratchy sounds when tuning. Dust bet w e e n plates of variable tuning condensers, loo much B battery on the detector tube plate, too much wire in tickler coil if using a regenerative detector, too much A battery because of rheostats being turned too high, poor socket contacts, or insuffi Signals on detector weak but good with amplifier . Batteries run down, A battery re=-— versed, defective tuner connections, too much or too little grid leak resistance, poor grid connection in socket, aerial or ground disconnected or making poor contact, aerial grounded or against obstruction which is collecting the energy, too much or not enough B battery on detector tube plates, damp coils, dirty variable con Tubes denser, or short-circuited light light cient grid leak. nmg arrester. *&' but there is no response in loud speaker. Dead B battery, B battery connections reversed or wrong, poor contact at plate or grid prongs of a tube socket, broken phone or loud speaker cord, tube paralyzed because of using too much B or plate battery, or broken or faulty connections in audiofrequency transformers. By MILO GURNEY RADIO'S best joke for 1926 (which has been crated and sent on its way to the cannery) concerns a celebrity who complained of something being dead wrong with his receiver because he could not get "Silent Night" on silent night in Chicago. Which has no bearing upon the fact that very often — just as company comes — that most enjoyable program, or any other program with remote possibilities of being enjoyable, cannot be had because yoitr "Best Radio in Town" has gone West for your company's sake. Never trouble trouble 'till trouble troubles you. Your yell brings the whole family to your rescue with a multiplicity of "How-to-Fixils," none of which has any bearing upon the particular form of slop signal which has halted your receiver. The result is that you most diplomatically opine to the aforementioned visiting neighbor that "your battery needs charging," which opinion nine times out of ten appears as the truth when you ask friend wife what the repair man found the trouble to be. Nine times out of ten you cannot recall whether you recharged the battery ten days previously, or the night of the big wind in Ireland. The police blotter at "Repairmans' Headquarters" readily proves that Neglect in charging one's storage battery is the most popular offense in Wm /O Radio. Of course, you know that your A battery, if of the wet type, requires periodic recharging; or replacement of the batteries at regular intervals is required when they are of the dry cell family. Of course you know that your loud speaker must be attached to the Radio, and the filament switch and rheostats turned on before you can enjoy the bedtime stories. But do you always do these things? The ten major troubles, the principle little what-nots which may occur, without due notice, and put your receiver out of commission are shown above as branches of the Family Radio Trouble Tree. The ten major causes and how to adjust them without having to make a bended knee appeal for the repair man are there too. Because the writer quite appreciates that the advice of each member of the family is unsolicited yet freely given when Radio trouble comes, the Family Radio Trouble Tree is pictured large so that Pa, Ma or big brother or sister can boastfully point out, "There that's it," and say, "I told you so." It represents the shortest course in Radio engineering of the "Fixit Myself School" and we think the page is well worth framing for the moral effect it may have upon one's neighbors, together with its usefullness as a real helpful chart. m