. QST . 90900 SeriesCathode Ray Oscilloscopes The No. 90902, No. 90903 and No. 90905 RackPanel Oscilloscopes, for Iwo, three and five inchlubes, respectively, are inexpensive batic unitscomprising power supply, brilliancy and center-ing controls, safety features, magnetic shielding,switches, etc. As a transmitter monitor, no addi-tional equipment or accessories are required. Thewell-known trapezoidal monitoring patterns aresecured by feeding modulated carrier voltagefrom a pickup loop directly to vertical plates ofthe cathode ray tube and audio modulating volt-age to horizontal plates. By the
. QST . 90900 SeriesCathode Ray Oscilloscopes The No. 90902, No. 90903 and No. 90905 RackPanel Oscilloscopes, for Iwo, three and five inchlubes, respectively, are inexpensive batic unitscomprising power supply, brilliancy and center-ing controls, safety features, magnetic shielding,switches, etc. As a transmitter monitor, no addi-tional equipment or accessories are required. Thewell-known trapezoidal monitoring patterns aresecured by feeding modulated carrier voltagefrom a pickup loop directly to vertical plates ofthe cathode ray tube and audio modulating volt-age to horizontal plates. By the addition of suchunits as sweeps, pulse generators, amplifiers,servo sweeps, etc., all of which can be con-veniently and neatly constructed on companionrack panels, the original basic scope unit may beexpanded to serve any conceivable industrial orlaboratory application. JAMES MILLENMFG. CO., INC. MAIN OFFICE AND FACTORY* MALDENMASSACHUSETTS
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
