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| Keywords: WBT-Towers.jpg 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 en wikipedia 2007-07-21 Picture taken 2007-07-20 KyleAndMelissa22 wikipedia en KyleAndMelissa22 Original upload log en wikipedia WBT-Towers jpg wikitable - 2007-07-21 08 11 1090×1537× 75840 bytes KyleAndMelissa22 <nowiki>Taken 7-20-2007 This is WBT's transmitter locaton just south of Uptown Charlotte NC </nowiki> Radio towers in North Carolina Blaw-Knox towers | ||||
