File:WBT-Towers.jpg
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Summary
| Description |
English: Transmitter towers of AM radio station WBT just south of Uptown Charlotte, NC. These distinctive diamond-shaped towers were constructed in 1932 by the Blaw-Knox Co. and are called Blaw-Knox towers. The purpose of the diamond-cantilever shape was to improve the horizontal radiation pattern to reduce fading, and also to make the tower rigid to shear stress so that it only needs one set of guy-lines, attached at its broad "waist". In the 1930s, multiple sets of guy lines, as are used on modern "thin" antennas, tended to interfere with the radiation pattern of the antenna. |
| Date | Taken on 20 July 2007; 21 July 2007 (original upload date) |
| Source | Transferred from en.wikipedia to Commons. |
| Author | KyleAndMelissa22 at English Wikipedia |
 | A geocoded location could be added to this image. Visit Commons:Geocoding for information on how to add coordinates. Beta-test: Add coordinates helps to determine coordinates. |
Licensing
|
This work has been released into the public domain by its author, KyleAndMelissa22 at English Wikipedia. This applies worldwide. In some countries this may not be legally possible; if so: KyleAndMelissa22 grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
Original upload log
The original description page was here. All following user names refer to en.wikipedia.
| Date/Time | Dimensions | User | Comment |
|---|---|---|---|
| 2007-07-21 08:11 | 1090×1537× (75840 bytes) | KyleAndMelissa22 | Taken 7-20-2007. This is WBT's transmitter locaton, just south of Uptown Charlotte, NC. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 08:33, 16 March 2015 | | 1,090 × 1,537 (74 KB) | Chetvorno | Transferred from en.wikipedia |
File usage
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Global file usage
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- Usage on de.wikipedia.org
