IT1228122B - Sistema di radiocomunicazioni. - Google Patents

Sistema di radiocomunicazioni.

Info

Publication number
IT1228122B
IT1228122B IT2921176A IT2921176A IT1228122B IT 1228122 B IT1228122 B IT 1228122B IT 2921176 A IT2921176 A IT 2921176A IT 2921176 A IT2921176 A IT 2921176A IT 1228122 B IT1228122 B IT 1228122B
Authority
IT
Italy
Prior art keywords
communications system
radio communications
radio
communications
Prior art date
Application number
IT2921176A
Other languages
English (en)
Original Assignee
Siemens Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of IT1228122B publication Critical patent/IT1228122B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/003—Secret communication by varying carrier frequency at or within predetermined or random intervals
IT2921176A 1975-11-11 1976-11-10 Sistema di radiocomunicazioni. IT1228122B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752550592 DE2550592C1 (de) 1975-11-11 1975-11-11 Funksystem

Publications (1)

Publication Number Publication Date
IT1228122B true IT1228122B (it) 1991-05-28

Family

ID=5961463

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2921176A IT1228122B (it) 1975-11-11 1976-11-10 Sistema di radiocomunicazioni.

Country Status (2)

Country Link
DE (1) DE2550592C1 (it)
IT (1) IT1228122B (it)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT54873B (de) * 1910-04-28 1912-08-10 Johann Sacek Einrichtung zur Geheimhaltung der Nachrichten bei der Funkentelegraphie.
DE240982C (it) * 1910-09-13
CH499932A (de) * 1968-02-12 1970-11-30 Patelhold Patentverwertung Synchronisierverfahren für programmgesteuerte Trägerumtastung
CH499244A (de) * 1968-02-12 1970-11-15 Patelhold Patentverwertung Synchronisierverfahren für programmgesteuerte Trägerumtastung
CH488348A (de) * 1968-02-12 1970-03-31 Patelhold Patentverwertung Synchronisier-Verfahren für programmgesteuerte Trägerumtastung
CH499931A (de) * 1968-02-12 1970-11-30 Patelhold Patentverwertung Synchronisierverfahren für programmgesteuerte Trägerumtastung
DE1954754C3 (de) * 1969-10-30 1975-08-07 Siemens Ag, 1000 Berlin Und 8000 Muenchen Mit Verschlüsselung der zu übertragenden Nachrichtensignale arbeitendes Funktelefoniesystem
FR2094412A5 (it) * 1970-06-19 1972-02-04 Sodeteg

Also Published As

Publication number Publication date
DE2550592C1 (de) 1990-12-06

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