GB1008989A - Improvements in or relating to communication systems - Google Patents

Improvements in or relating to communication systems

Info

Publication number
GB1008989A
GB1008989A GB2708263A GB2708263A GB1008989A GB 1008989 A GB1008989 A GB 1008989A GB 2708263 A GB2708263 A GB 2708263A GB 2708263 A GB2708263 A GB 2708263A GB 1008989 A GB1008989 A GB 1008989A
Authority
GB
United Kingdom
Prior art keywords
relating
communication systems
line
july
transmitter
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB2708263A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens and Halske AG
Siemens Corp
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 and Halske AG, Siemens Corp filed Critical Siemens and Halske AG
Publication of GB1008989A publication Critical patent/GB1008989A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/76—Compensating for differences in line impedance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/06—Control of transmission; Equalising by the transmitted signal
    • H04B3/08—Control of transmission; Equalising by the transmitted signal in negative-feedback path of line amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
GB2708263A 1962-07-10 1962-07-12 Improvements in or relating to communication systems Expired GB1008989A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES80337A DE1170012B (de) 1962-07-10 1962-07-10 Schaltungsanordnung zum Ausgleich der unterschliedlichen Daempfung verschieden langer Fernmeldeleitungen

Publications (1)

Publication Number Publication Date
GB1008989A true GB1008989A (en) 1965-11-03

Family

ID=7508814

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2708263A Expired GB1008989A (en) 1962-07-10 1962-07-12 Improvements in or relating to communication systems

Country Status (5)

Country Link
CH (1) CH419243A (cs)
DE (1) DE1170012B (cs)
FI (1) FI41755B (cs)
GB (1) GB1008989A (cs)
NL (2) NL145119B (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3716835A1 (de) * 1987-05-20 1988-12-01 Telefonbau & Normalzeit Gmbh Schaltungsanordnung fuer eine zentralgespeiste fernsprechteilnehmerstation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975971C (de) * 1955-04-05 1962-12-27 Angelika Kunckel Tragbarer Fernsprechapparat mit Ortsbatterie
DE1060916B (de) * 1955-11-16 1959-07-09 Heinz Kunckel Vermittlungseinrichtung fuer tragbare Fernsprechapparate mit OB-Betrieb

Also Published As

Publication number Publication date
DE1170012B (de) 1964-05-14
NL294155A (cs)
CH419243A (de) 1966-08-31
FI41755B (cs) 1969-10-31
NL145119B (nl) 1975-02-17

Similar Documents

Publication Publication Date Title
GB1485905A (en) Gain control circuit
GB949195A (en) Improvements relating to amplifier systems
GB747711A (en) Improvements in digital calculating machines
GB921220A (en) Improvements in or relating to echo-sounding apparatus
GB1008989A (en) Improvements in or relating to communication systems
GB1104103A (en) Improvements relating to data transmission apparatus
ES362693A1 (es) Red de conversacion activa para instalaciones telefonicas.
GB1257490A (cs)
GB1469990A (en) Gain control circuit
GB1256240A (en) Improvements in or relating to hybrid circuits
GB1257316A (cs)
GB831511A (en) Regulated power supply system using transistors
GB776637A (en) Improvements in or relating to disc-shaped spacing members for coaxial high-frequency transmission lines
GB787824A (en) Improvements in or relating to circuits including electric signal transmission linesin communication systems
GB996460A (en) Compensating circuit
GB1159777A (en) Signal Transmission Systems.
GB1029107A (en) Impedance transformer device
GB738319A (en) Improvements in or relating to negative impedance devices employing transistor amplifiers
GB1281325A (en) Improvements in or relating to multistage transistorised a.c. voltage amplifiers
GB743024A (en) Improvements in or relating to telephone apparatus
GB812588A (en) Improvements in or relating to transmission measuring sets for electric communication circuits
GB1078997A (en) Electronic signal selector
GB1123054A (en) Improvements in or relating to receiver circuits for frequency modulated telegraphy signals
GB1042558A (en) Improvements in or relating to pulse correction circuits
GB792420A (en) Improvements in modulating circuits for carrier frequency signal transmission systems