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BA7KW:设计增益单根17dBd,4根合成23dDd,相当的厉害。使用材料:主梁 25x25(1.1厚)304不锈钢管(90元一根),引向器和反射器,8mm铝管,振子(driver)12mm铝管。天下振子是28欧姆的,所以要用两根1/4波 .. (2016-12-14 13:50)