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Publication date
Application filed by Standard Telephon & Radio AgfiledCriticalStandard Telephon & Radio Ag
Publication of CH240688ApublicationCriticalpatent/CH240688A/de
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
H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
H04B1/40—Circuits
H04B1/54—Circuits using the same frequency for two directions of communication
H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03F—AMPLIFIERS
H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
H03F3/62—Two-way amplifiers
H03F3/64—Two-way amplifiers with tubes only
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04B—TRANSMISSION
H04B3/00—Line transmission systems
H04B3/02—Details
H04B3/36—Repeater circuits
H04B3/38—Repeater circuits for signals in two different frequency ranges transmitted in opposite directions over the same transmission path
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Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Signal Processing
(AREA)
Power Engineering
(AREA)
Filters And Equalizers
(AREA)
CH240688D1942-12-221943-12-22Zweidrahtverstärker mit Tiefpassfilter.
CH240688A
(de)
Verfahren zur Verminderung des zwischen Fernmeldeleitungen gleicher UEbertragungsrichtung ueber dritte Leitungskreise entstehenden doppelten Fernnebensprechens
Elektrisches Wellenfilter mit mehreren Sperr- und Durchlassbereichen, dessen Daempfungs- und/oder Wellenwiderstandsfunktion aus der Daempfungs- bzw. Wellenwiderstandsfunktion eines Wellenfilters mit nur einem Durchlassbereich abgeleitet ist
Rueckkopplungsfreie Lautsprecheranordnung fuer Teilnehmerstationen, bei denen Sender und Empfaenger ueber eine Gabelschaltung miteinander verbunden sind und aus zwei elektrisch gleichen Lautsprechern bestehen