GB621687A - Improvements in or relating to testing electrical communication systems - Google Patents

Improvements in or relating to testing electrical communication systems

Info

Publication number
GB621687A
GB621687A GB9564/46A GB956446A GB621687A GB 621687 A GB621687 A GB 621687A GB 9564/46 A GB9564/46 A GB 9564/46A GB 956446 A GB956446 A GB 956446A GB 621687 A GB621687 A GB 621687A
Authority
GB
United Kingdom
Prior art keywords
station
sec
pulse
pulses
frequency
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
GB9564/46A
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.)
Individual
Original Assignee
Individual
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
Priority to FR957130D priority Critical patent/FR957130A/fr
Priority to BE476340D priority patent/BE476340A/xx
Application filed by Individual filed Critical Individual
Priority to GB9564/46A priority patent/GB621687A/en
Priority to US747810A priority patent/US2550782A/en
Priority to DEP32442A priority patent/DE887062C/de
Publication of GB621687A publication Critical patent/GB621687A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H04B17/401—Monitoring; Testing of relay systems with selective localization
    • H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
    • H04B17/405—Monitoring; Testing of relay systems with selective localization using different frequencies generated by local multipliers, dividers, modulators

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
GB9564/46A 1946-03-27 1946-03-27 Improvements in or relating to testing electrical communication systems Expired GB621687A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR957130D FR957130A (en:Method) 1946-03-27
BE476340D BE476340A (en:Method) 1946-03-27
GB9564/46A GB621687A (en) 1946-03-27 1946-03-27 Improvements in or relating to testing electrical communication systems
US747810A US2550782A (en) 1946-03-27 1947-05-13 System for testing intermediate amplifiers
DEP32442A DE887062C (de) 1946-03-27 1949-01-25 Verfahren zur Pruefung elektrischer, mit Zwischenverstaerkern arbeitender UEbertragungsanlagen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9564/46A GB621687A (en) 1946-03-27 1946-03-27 Improvements in or relating to testing electrical communication systems

Publications (1)

Publication Number Publication Date
GB621687A true GB621687A (en) 1949-04-14

Family

ID=9874420

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9564/46A Expired GB621687A (en) 1946-03-27 1946-03-27 Improvements in or relating to testing electrical communication systems

Country Status (5)

Country Link
US (1) US2550782A (en:Method)
BE (1) BE476340A (en:Method)
DE (1) DE887062C (en:Method)
FR (1) FR957130A (en:Method)
GB (1) GB621687A (en:Method)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2703877A (en) * 1951-05-21 1955-03-08 Loewe Optal Ag Method of supervising electrical amplifiers
NL169808B (nl) * 1951-05-23 Philips Nv Frequentiekiezer met vrijloopkoppeling.
DE954074C (de) * 1953-09-25 1956-12-13 Pintsch Electro Gmbh Verfahren zur Einstellung der UEbertragungsguete einer Nachrichtenverbindung mit mehreren Zwischenverstaerkern, z. B. einer Mehrkanal-Nachrichtenverbindung, insbesonderefuer frequenzmodulierte Richtfunk-Relaisverbindungen
DE958574C (de) * 1955-05-28 1957-02-21 Felten & Guilleaume Carlswerk Einrichtung zur UEberwachung, Fehlerortung und Umschaltung von Betriebsverstaerkern auf Ersatzverstaerker in unbemannten Verstaerkerstationen
DE1074089B (de) * 1956-06-15 1960-01-28 Compagnie Generale d'Electricite Paris Anordnung zur Überwachung von Übertragungssystemen großer Länge mit ferngespeisten Verstärkerstationen
NL134178C (en:Method) * 1960-12-20 1900-01-01

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1581576A (en) * 1922-03-18 1926-04-20 Western Electric Co Carrier-wave signaling system
US2243599A (en) * 1938-04-30 1941-05-27 Hazeltine Corp Video-frequency signal-translating system
US2208417A (en) * 1939-04-07 1940-07-16 Bell Telephone Labor Inc Transmission system
US2260160A (en) * 1940-04-26 1941-10-21 Bell Telephone Labor Inc Location and identification of faults in signaling transmission systems
US2315434A (en) * 1940-07-03 1943-03-30 Bell Telephone Labor Inc Transmission system
US2315435A (en) * 1940-07-09 1943-03-30 Bell Telephone Labor Inc Transmission system
US2364190A (en) * 1941-10-29 1944-12-05 Bell Telephone Labor Inc Measuring system and circuit
US2321723A (en) * 1942-06-26 1943-06-15 Bell Telephone Labor Inc Speech transmission system
US2432214A (en) * 1943-09-25 1947-12-09 Rca Corp Electrical wave analyzer

Also Published As

Publication number Publication date
FR957130A (en:Method) 1950-02-16
DE887062C (de) 1953-08-20
BE476340A (en:Method) 1900-01-01
US2550782A (en) 1951-05-01

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