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Jim
I live in a similar location to you and have found the 450 Ohm ladder line to be pretty useless in the wind. It seems to break every couple of months and I have to keep repairing it. I made some open wire feeder using standard speaker cable spaced about three inches with the spreaders every meter and it lasted for several years. For the spreaders I used short sections of square PVC trunking, drilled a hole at each end just large enough to thread the wire through then used Superglue to lock them in place. It works just as well than the commercial stuff but with less loss. Jon G2FHF "Jim Miller" wrote in message ... I'm putting up a doublet centerfed by 450 ohm ladderline. It will be about 50ft away from the house to the feedpoint of the antenna. We live on top of a hill and winds here are often gusting to 60mph. The typical direction of the wind is perpendicular to the ladderline and I'm concerned about it whipping itself to death. The ladder grabber at center of the doublet will be supported by a line running from the house to a tree so I'm considering attaching the ladderline to the support line leading to the house to minimize the whipping. The ladderline has to come this way anyway. This support line will be perpendicular to the axis of the antenna. I briefly thought about threading the house line through the ladder windows but that seemed likely to spoil the impedence especially if wet. Any concerns or recommendations? tnx jtm |
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