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SYSTEME APPEL SEQUENTIEL SEULE FREQUENCE [1 record]

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Record 1 2002-11-25

English

Subject field(s)
  • Telephony and Microwave Technology
CONT

A multi-tone system, the sequential single-frequency calling system (SSFC), was introduced in the late 1960s.

Key term(s)
  • sequential single frequency calling system
  • sequential single frequency code system

French

Domaine(s)
  • Téléphonie et techniques hyperfréquences
OBS

Vers la fin des années 1960 apparut un système d'appel à plusieurs tonalités, le système d'appel séquentiel à une seule fréquence (SSSF), dont la progression a cependant été lente car il ne donne pas de bons résultats avec bande latérale unique, en ondes décamétriques et hectométriques.

Spanish

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