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This newspaper page contains 4 articles. Subscribers can read the full text of each article.
Newspaper
Vindicator And Republican
Location
Estherville, Iowa, United States of America
Date
Nov 29, 1922
Page
7
The text explains vacuum tube amplification with A B and C batteries, plate grid dynamics, and how external plate circuit impedance affects static and dynamic characteristics. It covers how increased external resistance raises plate to filament voltage variation, ideal amplification conditions, and how external impedance causes voltage drops shaping the amplified output.
The article explains building two audio frequency amplifier units using standard amplifying transformers and vacuum tubes. It details component costs, panel and baseboard dimensions, wiring setups, and how to connect the units to an eight inch square receiver. It notes three stages as practical maximum to avoid excessive noise and describes mounting and diagrams for construction.
The Seattle Totemites society of radio fans opens a free school for members to learn code signals during broadcasts. Isolated residents gain companionship and a sense of nearby entertainers, while Maj. Gen. Squire notes radio advances outpace other sciences and foresees radio used for future warfare. Britain unveils a two purpose vacuum tube the Mullard Ora combining rectifier and amplifier in one unit.
Free Methodist Church announces Saturday 10 a.m. Children’s meeting and 10:30 a.m. Thanksgiving service. Friday 8 p.m. Lincoln Temperance program with a worthwhile offering. Sunday 10 a.m. Sunday School 11 a.m. preaching by pastor and 7:30 p.m. Evangelistic service. Text: Bible. O.H. Whiteacre invites all, especially the poor.
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