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Blair, John Tait, EI7BA has a good web page on the Cushcraft R5/R7 antenna http://www.iol.ie/~bravo/r7_vertical.htm My preference for aluminum is NOT to paint it. Shiny aluminum can not exist long in an oxygen environment without developing a dull gray patina (reaction of AL with O2). This patina is conductive. Aluminum oxide is conductive?! Ed WB6WSN Ed - Good catch. Getting ahead of my fingers. To avoid seizing when assembling the telescoping elements of your Cushcraft antenna, you should coat the inner element with PENTROX-A by Burndy. This can be found at any electrical distributor. Many Home Depot stores also carry the product. It is conductive and will avoid seizing between these aluminum elements. w9gb |
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