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HECTOKILOMETRIC WAVES [1 record]

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Record 1 2012-09-28

English

Subject field(s)
  • Radio Waves
DEF

In the communication spectrum of frequencies or wavelengths, that portion which lies between 300 and 3000 hertz (Hz) or between 100 and 1000 kilometres.

OBS

The above definition was derived from data found in Federal Standard - 1037, Glossary of Telecommunication Terms, Advance Copy, 1980.

OBS

The frequency table in ITT-Reference Data for Radio Engineers, Fifth Edition, 1973, does not give a metric subdivision name for frequencies between 300 and 3000 Hz as it does for other bands. The band designator and name are given as : VF-voice frequency. This designator and name combination is correct per se, but it does not fit into the electromagnetic wave concept conveyed by ILF-infra low frequency. To fill the gap left by the missing metric subdivision name, the term "hectokilometric waves" is proposed.

OBS

infra low frequency; ILF: OFFIC-USA

French

Domaine(s)
  • Ondes radioélectriques
DEF

Dans le spectre des rayonnements radioélectriques, les fréquences ou longueurs d'ondes qui occupent la bande située entre 300 et 3 000 hertz (Hz) ou entre 100 et 1 000 kilomètres. La désignation américaine est ILF.

OBS

Le qualificatif «hectokilométrique» est proposé pour représenter 100 000 mètres (fondé sur le modèle «décimillimétrique» qui représente 1/10 000 mètre).

OBS

Dans certains milieux opérationnels, il faudra tolérer l'abréviation américaine «ILF», surtout parce qu'il n'existe pas d'équivalent reconnu en France.

Spanish

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