2016_12_29_ewr-lax_105 : 無料・フリー素材/写真
2016_12_29_ewr-lax_105 / Nfrastructure
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | The James River loops east of Yankton, South Dakota before joining the Missouri River, which forms the border with Nebgraska, below. Featured here is WNAX/570's 911-foot tower, which provided huge coverage (see the map at then end of this set), due both to the tower itself (at 190° of a wavelength, it concentrates maximum energy along the ground) and the ground conductivity, which is unusually high in the prairie region of North America. WNAX does this with only 5000 watts, which is 1/10th the maximum in the U.S. and Canada. My mother grew up listening to WNAX at her family's home in Napoleon, North Dakota, 277 air miles away from Yankton. |
| 撮影日 | 2016-12-29 10:19:33 |
| 撮影者 | Nfrastructure |
| タグ | |
| 撮影地 | |
| カメラ | Canon EOS 5D Mark III , Canon |
| 露出 | 0.003 sec (1/400) |
| 開放F値 | f/7.1 |
| 焦点距離 | 105 mm |