This is just the beginning! Our collection holds over 300 years of history, including rare newspapers, obituaries, marriage records, birth records, and so much more—most of which you won’t find anywhere else!
This newspaper page contains 8 articles. Subscribers can read the full text of each article.
Newspaper
Indianapolis Times
Location
Indianapolis, Indiana, United States of America
Date
Mar 12, 1925
Page
13
Washington March 12. Hearings in New York on the Federal Trade Commission charge eight companies with an attempted radio monopoly. The case centers on patent conflicts and cross agreements among the firms, with control of over a thousand patents and potential wide industry impact.
A lay explanation of how radio waves travel from microphone to speaker. It describes carrier waves, modulation, transmission, reception, detection, and amplification leading to audible sound. The piece notes the public shift toward radio enthusiasm.
Albert Huff asks about KFRU in Bristow Oklahoma and WORD in Batavia Illinois. He notes KFRU on 296.9 meters and WORD on 275 meters and asks where Jack Little and Paul Small are broadcasting from this week in Cincinnati.
The DX devotee venturing in the air must fully gird his set for the grand hunt. Key points include strong aerial installation and insulation, shielding to prevent body capacity effects, proper tube selection and arrangement, ensuring tuned RF circuits stay in resonance, and keeping batteries fully charged for peak efficiency.
San Francisco landscape gardener Fred Mantle faces disqualification after KGO engineers cited hearable mouth sounds on air. Management considered a silencing grid to separate mouth noises from plates, noting the gadget would curb broadcast defects.
An exhaustive study of radio receiving conditions in Philadelphia will be conducted by the Moore School of Electrical Engineering at the University of Pennsylvania. It aims to create a contour map showing signal strengths across the city, identifying dead spots and the impact of tall buildings. A mobile test station will traverse the city to test locations.
To locate shorts in a variable condenser connect a battery and buzzer in series with the condenser. If the buzzer operates with revolving plates it shows plates touch. A spark may be seen at the contact points. An alternative method uses a pair of phones with the same battery and wiring to detect the fault.
A cloth bag filled with lime placed inside the cabinet prevents dampness in coils by absorbing moisture. The note suggests this simple method as an inexpensive way to keep coils dry.
We want people to find what they are looking for at NewspaperArchive. We are confident that we have the newspapers that will increase the value of your family history or other historical research. With our 7-day free trial, you can view the documents you find for free.
People find the most success using advanced search. Try plugging in keywords, names, dates, and locations, and get matched with results from the entire collection of newspapers at NewspaperArchive!
You can also successfully find newspapers by these browse options. Explore our archives on your own!
Browse by location and discover newspapers from all across the world.
Browse by date and find publications for a specific day or era.
Browse old newspaper publications to find specific newspapers.