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File:SatelliteAntenna-137MHz closeup.jpg

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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
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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.
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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.
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the copyright holder is properly attributed. Redistribution, derivative work, commercial use, and all other use is permitted.
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The following pages on the English Knowledge (XXG) use this file (pages on other projects are not listed):
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Alterations to original image: cropped out portions of empty sky to give closeup view, increased contrast.
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used for reception of weather satellite data on 137 MHz. It consists of two identical
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at right angles, fed in quadrature. This type of antenna is used because it receives
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I, the copyright holder of this work, hereby publish it under the following license:
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Click on a date/time to view the file as it appeared at that time.
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The copyright holder of this file allows anyone to use it
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Commons is a freely licensed media file repository.
66:(490 × 634 pixels, file size: 66 KB, MIME type: 81: 8: 418: 271: 496:The following other wikis use this file: 478: 394: 378: 358: 342: 322: 306: 289: 286: 267: 260: 7: 466:User created page with UploadWizard 407: 126:SatelliteAntenna-137MHz closeup.jpg 280: 274: 226: 150: 130: 113: 59: 279: 265: 234: 80: 31: 21: 262: 131: 14: 261: 243:for any purpose, provided that 151: 26: 1: 287:Items portrayed in this file 212:SatelliteAntenna-137MHz.jpg 198:Original work: K. Krallis, 181:SatelliteAntenna-137MHz.jpg 552: 530:Usage on www.wikidata.org 520:Usage on fr.wikipedia.org 510:Usage on fa.wikipedia.org 500:Usage on de.wikipedia.org 408: 235: 233: 16: 361:attribution only license 264: 87:This is a file from the 465: 207: 186: 175: 168: 165: 123: 91:. Information from its 94:description page there 41:Size of this preview: 524:Très haute fréquence 146:circularly polarized 444:08:19, 22 June 2015 47:Other resolutions: 492:Global file usage 486:Turnstile antenna 469: 345:copyright license 275:Turnstile antenna 273: 258: 257: 217: 216: 138:turnstile antenna 109: 108: 89:Wikimedia Commons 32:Global file usage 543: 456: 309:copyright status 253: 238: 237: 231: 171: 155: 153:Français : 135: 127: 121: 105: 84: 83: 77: 71: 69: 56: 53:490 × 634 pixels 49:185 × 240 pixels 43:463 × 599 pixels 551: 550: 546: 545: 544: 542: 541: 540: 490: 477: 470: 462: 454: 410: 409: 406: 405: 404: 403: 402: 401: 400: 399: 397: 387: 386: 385: 383: 372: 371: 370: 369: 368: 367: 366: 365: 363: 351: 350: 349: 347: 336: 335: 334: 333: 332: 331: 330: 329: 327: 315: 314: 313: 311: 300: 299: 298: 297: 296: 294: 278: 277: 276: 259: 251: 229: 228: 223: 218: 161: 158: 142:dipole antennas 125: 118: 111: 110: 99: 98: 97:is shown below. 73: 67: 65: 58: 57: 46: 12: 11: 5: 549: 547: 539: 538: 537: 536: 528: 527: 526: 518: 517: 516: 508: 507: 506: 494: 493: 489: 488: 483: 475: 474: 473: 468: 467: 464: 460: 457: 451: 446: 441: 437: 436: 433: 430: 427: 424: 421: 414: 413: 398: 395: 393: 392: 391: 390: 389: 388: 384: 379: 377: 376: 375: 374: 373: 364: 359: 357: 356: 355: 354: 353: 352: 348: 343: 341: 340: 339: 338: 337: 328: 323: 321: 320: 319: 318: 317: 316: 312: 307: 305: 304: 303: 302: 301: 295: 290: 288: 285: 284: 283: 282: 281: 270: 269: 266: 263: 256: 255: 247: 246: 239: 225: 224: 222: 219: 215: 214: 209: 208:Other versions 205: 204: 203: 202: 196: 192:Derived work: 188: 184: 183: 177: 173: 172: 167: 163: 162: 128: 119: 117: 114: 112: 107: 106: 85: 75: 74: 40: 36: 35: 34: 29: 24: 19: 13: 10: 9: 6: 4: 3: 2: 548: 535: 532: 531: 529: 525: 522: 521: 519: 515: 512: 511: 509: 505: 502: 501: 499: 498: 497: 491: 487: 484: 482: 481:Antenna types 479: 471: 463: 458: 452: 450: 447: 445: 442: 439: 438: 434: 431: 428: 425: 422: 420: 419: 417: 411: 382: 362: 346: 326: 310: 293: 254: 249: 248: 244: 240: 232: 220: 213: 210: 206: 201: 197: 195: 191: 190: 189: 185: 182: 179:Derived from 178: 174: 164: 159: 154: 149: 147: 143: 139: 134: 129: 122: 115: 103: 96: 95: 90: 86: 79: 78: 72: 63: 62:Original file 54: 50: 44: 39: 33: 30: 28: 25: 23: 20: 18: 15: 495: 415: 412:File history 250: 242: 152: 132: 102:You can help 92: 60: 22:File history 325:copyrighted 252:Attribution 124:Description 514:انواع آنتن 504:Kreuzdipol 472:File usage 453:490 × 634 429:Dimensions 68:image/jpeg 27:File usage 461:Chetvorno 426:Thumbnail 423:Date/Time 381:inception 221:Licensing 194:Chetvorno 133:English: 396:May 2007 268:Captions 170:May 2007 534:Q385314 455:(66 KB) 440:current 435:Comment 292:depicts 272:English 116:Summary 64:‎ 187:Author 176:Source 200:SV1XV 432:User 166:Date 17:File 136:A 51:| 45:. 104:. 70:) 55:.

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Global file usage
File:SatelliteAntenna-137MHz closeup.jpg
463 × 599 pixels
185 × 240 pixels
490 × 634 pixels
Original file
Wikimedia Commons
description page there
You can help
turnstile antenna
dipole antennas
circularly polarized
SatelliteAntenna-137MHz.jpg
Chetvorno
SV1XV
SatelliteAntenna-137MHz.jpg
depicts
copyright status
copyrighted
copyright license
attribution only license
inception
08:19, 22 June 2015
Thumbnail for version as of 08:19, 22 June 2015
Chetvorno
Antenna types
Turnstile antenna

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