ATIS Telecom Glossary
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cutoff frequency
The frequency either above which or below which the output of a circuit, such as a line, amplifier, or filter, is reduced to a specified level. 2. The frequency below which a radio wave fails to penetrate a layer of the ionosphere at the incidence angle required for transmission between two specified points by reflection from the layer.

 

 

 

 

 

 

 

 

 

 



 
These definitions were prepared by ATIS Committee PRQC
 
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