A study of radio signal fading
Book details
- Title
- A study of radio signal fading
- Publication year listed
- 1923
- Format
- Public domain eBook
- Reading access
- Free online reader; no registration required
- Source record
- View on Archive.org
About this book
A study of radio signal fading
Year: 1923
Fading is defined as rapid variation of signal intensity at constant wave-length during reception, as distinct from "swinging," when the wave-length varies. An example of fading is given. This is most pronounced on short wave-lengths, is small above 400 m., and is most pronounced at night. The increase in the number of short wave transmitters renders investigation necessary and this should be carried out simultaneously by many observers. A scheme of investigation was drawn up in 1920 by the American Radio Relay League and the Bureau of Standards and preliminary tests carried out with 17 sending and 243 receiving stations confined to north-east United States. Transmitting stations were of both spark and valve type, but chiefly 1-kw. 60-cycle, non-synchronous spark sets, at 200 metres wave
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