Critical frequency
id:
critical-frequency-177-17143424
title:
Critical frequency
text:
In telecommunications, the term critical frequency has the following meanings:
- In radio propagation by way of the ionosphere, the frequency at or below which a wave component is reflected by, and above which it penetrates through, an ionospheric layer.
- At near vertical incidence, the limiting frequency at or below which incidence, the wave component is reflected by, and above which it penetrates through, an ionospheric layer. Critical Frequency changes with time of day, atmospheric condi
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Critical_frequency
date created:
2002-02-25T15:51:15Z
date modified:
2024-09-04T18:53:12Z
main entity:
{"identifier":"Q5186717","url":"https://www.wikidata.org/entity/Q5186717"}
image:
fields total:
13
integrity:
14