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Newspaper
Indiana Progress
Location
Indiana, Pennsylvania, United States of America
Date
Jun 07, 1922
Page
9
A novice can assemble a simple radiophone receiver for four to fifteen dollars by wiring an antenna between a high, insulated aerial and a ground. The article describes antenna heights of 80 feet minimum and 50 to 200 foot wire lengths, plus a detailed DIY tuner with cardboard tubing and magnet wire, and notes ready-made tuners cost about three dollars and fifty cents.
British scientists report partial success in moving pictures by radio and linking films with broadcasting. Earlier tests sent photographs between Copenhagen Politiken and Hug age and then across the Atlantic. The goal is to let receivers view distant events such as a sinking ship in real time, a prospect once deemed far off.
A guide notes crystal detectors cannot be adequately amplified and offers practical wiring advice. Insulate aerial ends, run wires at right angles to power lines, and use the combined wire count for the lead. Cold water pipes make excellent grounds, gas pipes poor. Crystal detectors are less efficient than vacuum tubes, and within three to five miles of a station a 40 foot indoor single wire aerial is usually satisfactory.
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