Radio-frequency amplifiers
Book details
- Title
- Radio-frequency amplifiers
- Publication year listed
- 1922
- Format
- Public domain eBook
- Reading access
- Free online reader; no registration required
- Source record
- View on Archive.org
About this book
Radio-frequency amplifiers
Author: Lowell, P.D.
Year: 1922
Electron tube amplifiers may make use of either radio frequency amplification or audio frequency amplification, or both. Radio-frequency amplification consists in the amplification of the received radio-frequency current before it is detected. The use of radio-frequency amplification makes it possible to receive a very weak signal which cannot be heard at all if only audio frequency amplification is used. The coil antennas used in direction finding work receive only a very feeble signal, and for satisfactory reception with coil antennas it is necessary to use radio frequency amplification.
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