pdx-sfo-sba_106.JPG : 無料・フリー素材/写真
pdx-sfo-sba_106.JPG / dsearls
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | They're hard to see, but standing in the green field are two towers: a self-supporting one on the left, and a guyed one on the right. The latter is what radiates KNBR/680, one of only three "clear channel" stations (in the literal sense) on the West Coast. The other two are KFI/640 and KNX/1070 in Los Angeles. KNBR began as KPO, one of the first stations in the country. The transmitter was moved to this site in Redwood Shores (then called the "Belmont site") in the 1933.. The self-supporting tower was one of two, and the signal radiated from a vertical wire that hung from a "clothesline" between two identical towers. In 1949. Here's a photo of the clothesline rig. The new guyed tower went up in 1949. Here's a shot of that one going up. Here's KNBR's daytime coverage map. At night the signal covers the whole western U.S. As a kid I used to hear it in New Jersey. When I moved to the Bay Area in the mid-80s, none of the houses in this picture were there. All have encroached in the last few years. Also, this green pasture was also home to a short wave station, KGEI, which folded in the 1990s. |
| 撮影日 | 2006-07-27 19:43:22 |
| 撮影者 | dsearls , Santa Barbara, USA |
| タグ | |
| 撮影地 | Redwood City, California, United States 地図 |
| カメラ | Canon EOS 30D , Canon |
| 露出 | 0.004 sec (1/250) |
| 開放F値 | f/7.1 |
| 焦点距離 | 200 mm |