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HELICAL ANTENNA [5 records]
Record 1 - internal organization data 2009-08-19
Record 1, English
Record 1, Subject field(s)
- Radio Transmission and Reception
- Telecommunications Facilities
- Remote Sensing
Record 1, Main entry term, English
- helical antenna
1, record 1, English, helical%20antenna
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- helix antenna 2, record 1, English, helix%20antenna
correct
- helical aerial 3, record 1, English, helical%20aerial
correct, Great Britain
- helix aerial 4, record 1, English, helix%20aerial
correct, Great Britain
- corkscrew aerial 4, record 1, English, corkscrew%20aerial
familiar
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A coil antenna mounted perpendicular to a flat metal-plate reflector, an arrangement that produces circularly polarized waves in a narrow beam. 5, record 1, English, - helical%20antenna
Record 1, French
Record 1, Domaine(s)
- Émission et réception radio
- Installations de télécommunications
- Télédétection
Record 1, Main entry term, French
- antenne hélicoïdale
1, record 1, French, antenne%20h%C3%A9lico%C3%AFdale
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- antenne en hélice 2, record 1, French, antenne%20en%20h%C3%A9lice
feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
L'antenne en hélice est essentiellement constituée d'un fil enroulé en hélice. Elle est excitée par une ligne coaxiale dont la gaine est raccordée à un réflecteur. Elle est à polarisation circulaire. 3, record 1, French, - antenne%20h%C3%A9lico%C3%AFdale
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2007-01-26
Record 2, English
Record 2, Subject field(s)
- Space Exploration Equipment and Tools
- Spacecraft
Record 2, Main entry term, English
- above deck equipment
1, record 2, English, above%20deck%20equipment
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- above-deck equipment 2, record 2, English, above%2Ddeck%20equipment
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
The above deck equipment is usually some form of tracking dish, with a circular polarized feed arrangement. This usually takes the form of an helical antenna, wound with left-hand circular polarization. The signal from the satellite is right-hand circular polarization, but since the signal is reflected by the dish, polarization sense is reversed. This is the same principle as if you were to look in a mirror; your image is reversed. 1, record 2, English, - above%20deck%20equipment
Record number: 2, Textual support number: 1 OBS
Inmarsat satellite. 2, record 2, English, - above%20deck%20equipment
Record 2, French
Record 2, Domaine(s)
- Équipement et outillage d'exploration spatiale
- Engins spatiaux
Record 2, Main entry term, French
- équipement de superstructure
1, record 2, French, %C3%A9quipement%20de%20superstructure
masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 1995-07-06
Record 3, English
Record 3, Subject field(s)
- Telecommunications Facilities
- Radar, Radio Guidance and Goniometry
Record 3, Main entry term, English
- broadband helical antenna
1, record 3, English, broadband%20helical%20antenna
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, French
Record 3, Domaine(s)
- Installations de télécommunications
- Radar, radioguidage et radiogoniométrie
Record 3, Main entry term, French
- antenne hélicoïdale à large bande
1, record 3, French, antenne%20h%C3%A9lico%C3%AFdale%20%C3%A0%20large%20bande
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 1993-10-12
Record 4, English
Record 4, Subject field(s)
- Spacecraft
Record 4, Main entry term, English
- quadrafilar helical antenna
1, record 4, English, quadrafilar%20helical%20antenna
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record 4, French
Record 4, Domaine(s)
- Engins spatiaux
Record 4, Main entry term, French
- antenne hélicoïdale quadrifilaire
1, record 4, French, antenne%20h%C3%A9lico%C3%AFdale%20quadrifilaire
correct, feminine noun, officially approved
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 OBS
antenne hélicoïdale quadrifilaire : terme uniformisé par le Comité d'uniformisation de la terminologie spatiale (CUTS). 2, record 4, French, - antenne%20h%C3%A9lico%C3%AFdale%20quadrifilaire
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 1989-01-26
Record 5, English
Record 5, Subject field(s)
- Electrical Power Supply
- Radar, Radio Guidance and Goniometry
Record 5, Main entry term, English
- corporate feed method
1, record 5, English, corporate%20feed%20method
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
The news antenna is made up of 25 stacked double rows of helical diode phase-shifters, employing a so-called "corporate" feed method, rather than end-feed, which makes the system non-frequency dispersive in azimuth and compatible with true random frequency dispersion... 1, record 5, English, - corporate%20feed%20method
Record 5, French
Record 5, Domaine(s)
- Alimentation (Distribution électrique)
- Radar, radioguidage et radiogoniométrie
Record 5, Main entry term, French
- méthode d'alimentation dite "en espalier"
1, record 5, French, m%C3%A9thode%20d%27alimentation%20dite%20%5C%22en%20espalier%5C%22
feminine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record 5, Spanish
Record 5, Textual support, Spanish
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