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Newspaper
The Dalton Gazette
Location
Dalton, Ohio, United States of America
Date
Jun 22, 1922
Page
8
The text explains how grid potential relative to filament and plate sets the amplification factor K in three electrode vacuum tubes. It details how grid mesh size affects E, how plate current responds to positive and negative grid voltages, and how symmetry in current requires a bias grid with a C battery to maintain optimal detector performance for symmetrical grid swings.
Radioelectricity details the Paris and Lafayette steamers fitted with five kilowatt tube transmitters and motor generators. The ships use a radio goniometer for range finding, with a 2000 to 9000 meter wave range. Paris has sent messages 3400 kilometers using its transmitter.
George Power, elephant trainer, plans experiments with a radiophone to see if his animals can respond to orders on stage without the trainer present. The tests will be conducted at the Hippodrome in New York City.
Alexander Graham Bell, now seventy five, kept and uses his radiophone at home despite removing his own telephone. Friends say he never tires of listening and experimenting with the new device, making him an ardent enthusiast.
Guidance on tuning grid and tickler circuits in regenerative receivers. Keep L to C ratio stable, avoid detuning by plate circuit changes, and match tube impedance. Try multiple detectors, note soft gas tubes as best detectors and hard tubes as best oscillators, and protect inductance cells from moisture.
The comparison sets Prest-O Plates beside ordinary plates, highlighting two-fold value in heat resistance and non buckling strength during hot tests, plus ready reserve power in the coldest winter.
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