34 Radio Noise and Interference

Revised byGeorge W. Swenson, Jr., A. Richard Thompson

Natural Noise

Thermal Noise
Atmospheric Noise
Cosmic Noise

Man-Made Radio Noise

Near-Zone and Far-Zone Noise Sources
Power Line Noise

Precipitation Static

Thermal Noise Calculations

Noise Measurements

Measurement for Broadcast Receivers
Noise Factor of a Receiver
Measurement of Noise Figure With a Thermal Noise Source
Calculation of Noise Figure
Noise Factor of Cascaded Networks

Interference From Signals of Other Services

Radio noise and interference limit the performance of all communications systems by restricting the operating range, generating errors in messages, and in extreme cases preventing the successful operation of receivers. At locations ...

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