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FR923783A - Procédé et système de communication par ondes électriques - Google Patents

Procédé et système de communication par ondes électriques

Info

Publication number
FR923783A
FR923783A FR923783DA FR923783A FR 923783 A FR923783 A FR 923783A FR 923783D A FR923783D A FR 923783DA FR 923783 A FR923783 A FR 923783A
Authority
FR
France
Prior art keywords
communication method
electric wave
wave communication
electric
wave
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
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Application granted granted Critical
Publication of FR923783A publication Critical patent/FR923783A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/165—Ground-based stations employing angle modulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/68—Tubes specially designed to act as oscillator with positive grid and retarding field, e.g. for Barkhausen-Kurz oscillators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/30—Angle modulation by means of transit-time tube

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
FR923783D 1945-02-06 1946-03-13 Procédé et système de communication par ondes électriques Expired FR923783A (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US576453A US2514425A (en) 1945-02-06 1945-02-06 Radio relaying
US642045A US2507739A (en) 1945-02-06 1946-01-18 Radio relaying
US654554A US2460789A (en) 1945-02-06 1946-03-15 Fault indicator for radio relaying systems
US654553A US2476162A (en) 1945-02-06 1946-03-15 High-frequency apparatus

Publications (1)

Publication Number Publication Date
FR923783A true FR923783A (fr) 1947-07-17

Family

ID=27504917

Family Applications (1)

Application Number Title Priority Date Filing Date
FR923783D Expired FR923783A (fr) 1945-02-06 1946-03-13 Procédé et système de communication par ondes électriques

Country Status (6)

Country Link
US (4) US2514425A (fr)
BE (1) BE464402A (fr)
CH (1) CH270707A (fr)
DE (1) DE836364C (fr)
FR (1) FR923783A (fr)
GB (1) GB625488A (fr)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616975A (en) * 1947-02-06 1952-11-04 Rca Corp Time division multiplex system
GB633870A (en) * 1947-04-01 1949-12-30 Standard Telephones Cables Ltd Improvements in or relating to failure alarm arrangements in multi-channel carrier current communication system
US2789211A (en) * 1948-11-19 1957-04-16 Raytheon Mfg Co Relay stations for microwave communication systems
US2604533A (en) * 1949-03-08 1952-07-22 Rca Corp Amplitude modulation
US2609498A (en) * 1950-01-07 1952-09-02 Bell Telephone Labor Inc Pulse counting and registration system
US2710343A (en) * 1950-08-09 1955-06-07 Dale Belford Secrecy system for transmitting television signals
US2678409A (en) * 1950-08-31 1954-05-11 Bell Telephone Labor Inc Signaling system
US2775647A (en) * 1950-09-28 1956-12-25 Hartford Nat Bank & Trust Co Single sideband carrier-wave telephone system
US2751437A (en) * 1950-10-19 1956-06-19 Raytheon Mfg Co Signal translation systems
US2776429A (en) * 1951-01-27 1957-01-01 Multiplex Dev Corp Multiplex communications system
US2690556A (en) * 1951-01-30 1954-09-28 Rca Corp Aircraft altitude indicating system
US2703877A (en) * 1951-05-21 1955-03-08 Loewe Optal Ag Method of supervising electrical amplifiers
BE511901A (fr) * 1951-06-08
US2706286A (en) * 1951-09-04 1955-04-12 Rca Corp Fault locating and indicating system
US2724107A (en) * 1952-06-13 1955-11-15 Ultraschall Geratebau Dr Born Device for transfer of supersonic vibrations
US2802208A (en) * 1952-06-25 1957-08-06 Charles F Hobbs Radio frequency multiplexing
US2751578A (en) * 1953-02-04 1956-06-19 Ericsson Telefon Ab L M Fault indicator for plural connected devices
US2839727A (en) * 1953-02-11 1958-06-17 Bell Telephone Labor Inc Encoder for pulse code modulation
US2871345A (en) * 1953-03-25 1959-01-27 Radio Receptor Company Inc Ultra high frequency tuners or converters
US3015802A (en) * 1953-04-07 1962-01-02 Roy R Newsom Remote control of traffic signals
US2844711A (en) * 1953-06-08 1958-07-22 Motorola Inc Multiple frequency channel multiplex communication system
US2876341A (en) * 1953-06-11 1959-03-03 Western Union Telegraph Co Fault alarm radio repeater system
US2799848A (en) * 1953-12-17 1957-07-16 Glantz Lester Murray Two-level control system
US2872676A (en) * 1954-04-23 1959-02-03 Seismograph Service Corp Radio location system
US2800644A (en) * 1954-06-30 1957-07-23 Westinghouse Air Brake Co Electric checking apparatus
US2945212A (en) * 1954-08-02 1960-07-12 Bell & Howell Co Apparatus for reproducing intelligence by compound modulation
US2892930A (en) * 1955-01-10 1959-06-30 Motorola Inc Communication system
US2942245A (en) * 1956-02-13 1960-06-21 Jr Spencer D Wooten Combined fire alarm and intercommunication system
US2967020A (en) * 1956-05-21 1961-01-03 Martin Co Electrical computers
US3005167A (en) * 1958-03-14 1961-10-17 Rca Corp Frequency modulation multiplex arrangement
US3028488A (en) * 1960-02-01 1962-04-03 Hughes Aircraft Co Satellite communication relay system utilizing modulation conversion
US3180938A (en) * 1960-07-07 1965-04-27 Itt Repeater terminal for frequency division multiplex communication systems
US3221098A (en) * 1962-08-15 1965-11-30 Eugene S Feldman Multiple lingual television in a multiplex broadcast system
US3255536A (en) * 1963-12-12 1966-06-14 Tutortape Lab Inc Selective programmed information receiving and responding system
US3731203A (en) * 1970-09-25 1973-05-01 Gte Sylvania Inc Monitoring circuit and system for detecting signals in a signal transmission system
DE2214583C3 (de) * 1972-03-24 1982-03-25 Siemens AG, 1000 Berlin und 8000 München Trägerfrequentes Nachrichtenübertragungssystem
JPS49100914A (fr) * 1973-01-12 1974-09-24
US5444967A (en) * 1994-09-06 1995-08-29 Meuth; William I. Mower deck wash out port
US6581363B1 (en) 2001-11-30 2003-06-24 Martin Hall, Inc. Mower deck cleaner

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE21807E (en) * 1941-05-20 Frequency control
US1633100A (en) * 1916-03-03 1927-06-21 Western Electric Co Plural channel signaling
US1695180A (en) * 1925-05-21 1928-12-11 Edward F Colladay Secrecy system of radio broadcast distribution
US1677966A (en) * 1925-12-30 1928-07-24 American Telephone & Telegraph Carrier signaling system
US2000130A (en) * 1932-12-16 1935-05-07 American Telephone & Telegraph Wide band transmission system
US2169212A (en) * 1937-01-16 1939-08-15 Edwin H Armstrong Radio transmitting system
US2279660A (en) * 1937-04-13 1942-04-14 Rca Corp Wave length modulation system
US2148532A (en) * 1938-04-28 1939-02-28 Bell Telephone Labor Inc Radio repeater
US2296962A (en) * 1939-12-22 1942-09-29 Rca Corp Frequency modulation
NL68041C (fr) * 1940-01-12
US2296384A (en) * 1940-04-11 1942-09-22 Rca Corp Relay system monitor
US2260160A (en) * 1940-04-26 1941-10-21 Bell Telephone Labor Inc Location and identification of faults in signaling transmission systems
US2287044A (en) * 1940-05-15 1942-06-23 Rca Corp Radio relaying system
US2304388A (en) * 1940-06-18 1942-12-08 Rca Corp Frequency modulator
US2298409A (en) * 1940-06-19 1942-10-13 Rca Corp Multiplexing
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
US2339198A (en) * 1940-07-11 1944-01-11 Bell Telephone Labor Inc Electric wave circuit
US2288025A (en) * 1940-08-03 1942-06-30 Bell Telephone Labor Inc Automatic frequency control system
USRE22587E (en) * 1940-11-20 1945-01-02 Fixed frequency difference
US2305882A (en) * 1941-04-08 1942-12-22 Rca Corp Variable frequency apparatus
US2425657A (en) * 1941-04-17 1947-08-12 Rca Corp Short-wave apparatus
US2337214A (en) * 1941-04-17 1943-12-21 Rca Corp Ultra short wave apparatus
US2357975A (en) * 1942-03-16 1944-09-12 Rca Corp Frequency modulation system
US2345101A (en) * 1942-03-27 1944-03-28 Rca Corp Frequency modulator
US2407212A (en) * 1942-06-16 1946-09-03 Rca Corp Radio relaying
US2415868A (en) * 1942-10-28 1947-02-18 Rca Corp Timing modulation
US2406125A (en) * 1943-12-17 1946-08-20 Hartford Nat Bank & Trust Co Frequency stabilizing system
US2381758A (en) * 1944-05-30 1945-08-07 Gen Electric Carrier current system
US2379052A (en) * 1944-08-10 1945-06-26 American Telephone & Telegraph Receiver for single side band systems
US2458124A (en) * 1944-11-14 1949-01-04 Raymond M Wilmotte Synchronous frequency broadcasting
US2421727A (en) * 1945-04-09 1947-06-03 Rca Corp Multiplex system having channels added at a relay station

Also Published As

Publication number Publication date
CH270707A (de) 1950-09-15
DE836364C (de) 1952-04-10
US2514425A (en) 1950-07-11
GB625488A (en) 1949-06-29
US2476162A (en) 1949-07-12
US2507739A (en) 1950-05-16
BE464402A (fr)
US2460789A (en) 1949-02-01

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