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Old December 29th 04, 04:45 PM
Cecil Moore
 
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Richard Harrison wrote:
Anytime parallel line such as twinlead or ladderline approaches ordinary
earth, loss soars. Direct burial is impractical even inside fairly large
conduit. Use one or two lengths of waterproof coax as buried line.


A ham I know uses parallel runs of buried RG62 as a compromise.
That gives him a characteristic impedance of 186 ohms for his 30
foot underground section. It was interesting to model that setup
using MicroSmith.
--
73, Cecil http://www.qsl.net/w5dxp


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