Файл:ASR-9 Radar Antenna.jpg
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ASR-9_Radar_Antenna.jpg (349 × 275 пиксела, големина на файла: 67 КБ, MIME-тип: image/jpeg)
Резюме
| Описание |
English: The antenna system of an Airport Surveillance Radar-9 with primary radar (parabolic antenna) and secondary radar (rectangular antenna, top). The secondary radar interrogates the transponder on the aircraft, which sends back a coded signal indentifying the craft and giving its altitude. |
| Източник | FAA ASR-9/Mode S Service Life Extension Program Photogaller, transfered from English Wikipedia where it was uploaded originally by w:en:User:Dmcdevit |
| Автор | Неизвестен |
Лицензиране
|
This image or file is a work of a Federal Aviation Administration employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain in the United States.
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Дневник на оригиналното качване
| date/time | username | resolution | size | edit summary |
|---|---|---|---|---|
| 00:53, 4 July 2005 | w:en:User:DirectEON | 349×275 | 67 KB | Photo of the antenna system of an Airport Surveillance Radar-9 {{PD-USGov-FAA}} |
| 00:50, 4 July 2005 | w:en:User:DirectEON | 269×195 | 24 KB | Photo of the antenna system of an Airport Surveillance Radar-9 {{PD-USGov-FAA}} |
Image description page history
| link | date/time | username | edit summary |
|---|---|---|---|
| http://en.wikipedia.org/w/index.php?title=Image:ASR-9_Radar_Antenna.jpg&redirect=no&oldid=18100669 | 06:11, 16 September 2007 | w:en:User:Dmcdevit | |
| http://en.wikipedia.org/w/index.php?title=Image:ASR-9_Radar_Antenna.jpg&redirect=no&oldid=18100669 | 00:56, 4 July 2005 | w:en:User:DirectEON | |
| http://en.wikipedia.org/w/index.php?title=Image:ASR-9_Radar_Antenna.jpg&redirect=no&oldid=18100359 | 00:50, 4 July 2005 | w:en:User:DirectEON | (Photo of the antenna system of an Airport Surveillance Radar-9 {{PD-USGov-FAA}}) |
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Избирането на дата/час ще покаже как е изглеждал файлът към онзи момент.
| Дата/Час | Миникартинка | Размер | Потребител | Коментар | |
|---|---|---|---|---|---|
| текуща | 14:37, 16 септември 2007 | | 349 × 275 (67 КБ) | wikimediacommons>BetacommandBot | Transwiki approved by: w:en:User:Dmcdevit This image was copied from wikipedia:en. The original description was: The antenna system of an Airport Surveillance Radar-9 ''Source: FAA ASR-9/Mode S Service Life Extension Program Photogallery'' {{PD-US |
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