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Newspaper
Indiana Progress
Location
Indiana, Pennsylvania, United States of America
Date
Jun 28, 1922
Page
2
A radio column explains vacuum tubes and their roles as detectors amplifiers or oscillators. It describes electron emission from heated filaments, the influence of plate voltage on current, and how tube design evolved from atoms to subatomic particles in early radio theory, noting terms like radiatron and serratron.
The excerpt explains electron mass relative to hydrogen, atom neutrality with electrons around a nucleus, and how removing or adding electrons forms positive or negative ions. It discusses electrons as charge carriers, how current is produced by moving electrons, and notes on metals releasing electrons in heated conditions and vacuum tube emission.
Officials announce a new powerful vacuum tube transmitter at the Presidio in San Francisco. With two 150 foot aerial towers it can be heard halfway around the world under favorable conditions. The site overlooks San Francisco Bay and will coordinate with stations in Salt Lake City and Cheyenne.
German rail and hotel facilities will soon host wireless telephone instruments. Trials in a moving freight car demonstrated the system functioning, with testers able to converse with friends in Berlin. Observers included engineers, military attaches, and diplomatic representatives of the United States and Sweden.
Handling the vacuum tubes of your receiver requires steady care to prevent knocks or breakage. The tubes are the heart of the set and must be protected. keep the glow just below the critical point to avoid damage while operating.
Amateur radio guidance covers plate voltages for amplifying tubes and detector tube control with a potent pot. Reception uses the same apparatus as code signals, while transmission differs. A single wire reduces static interference. defective B batteries cause roaring in headphones. The electron is the basic negative charge. soft and hard vacuum tubes denote detector and amplifier. Radio waves travel 186000 miles per second. A wavemeter checks transmitting and receiving wavelengths. Ground gas or water pipes, ground antenna when idle for lightning protection as required by regulations.
An Orphans Court appointed auditor LE Miller to settle and report on the estate of Jane Mitchell, deceased, in Baden County. The report will be filed at the Savings & Trust Company in Kidiana Borough on Monday, July 17, 1924, at ten o clock, for interested parties to attend if they see fit.
The twenty eighth annual Ridgeview Pentecostal Camp Meeting Association event runs July 9 at Ridgeview Park Pa. Officials include Oscar G. Cook president John F. Owen George Shaw and Andrew Johnston evangelists Kenneth and Eunice Wells as song leaders W P Shroyer secretary Wilkinsburg Pa.
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