File:SatelliteAntenna-137MHz.jpg

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Summary[edit]

Description
English: A turnstile antenna used for reception of weather satellite data on 137 MHz. It consists of two identical dipole antennas at right angles, fed in quadrature. This type of antenna is used because it receives circularly polarized radio waves transmitted by the satellite. Circular polarization is used for satellite communication because it is insensitive to the relative orientation of the transmitting and receiving antenna elements.
Français : Une antenne tourniquet utilisée pour la réception des données météorologiques par satellite de la bande: 137 MHz 138 MHz. Elle ce compose de deux antennes dipôles identiques à angle droit, alimentées en quadrature. Ce type d'antenne est utilisé parce qu'il reçoit en polarisation circulairement les ondes radio transmises par le satellite. La polarisation circulaire est utilisé pour les communications par satellite car elle est insensible à l'orientation relative de transmission et la réception par les éléments d'antenne.
Date
Source Own work
Author Copyright (C) 2007 K. Krallis, SV1XV
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current18:42, 16 July 2008Thumbnail for version as of 18:42, 16 July 2008921 × 1,024 (149 KB)Sv1xv (talk | contribs){{Information |Description={{en|1=137 MHz weather satellite reception antenna }} |Source=Own work by uploader |Author=Sv1xv |Date=May 2007 |Permission= |other_versions= }} {{ImageUpload|full}}
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