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ok when you go for new coax, try for lmr400 but if thasts to expensive try for rg-213.
when you buy it try to buy it in a length that is multipels of 18 feet times the velocity factor(vf).
the vf for rg213 is 66% and for lmr400 is 85% so use those numbers
(.66=12 feet or .85=15 feet 3 5/8 inches) and cut it only a couple inches longer then the number of multiples of those velocity factored 1/2 wave lengths that you need to reach your antenna.
that way the swr meter or radio will see the antenna instead of the coax.
with 1/2 wave multiples the equipment thinks its hooked directly to the antenna and you get the most honest reading of whats really going on at the antenna

[QUOTE="Needle Bender, post: 337188, member: 13339"] ok when you go for new coax, try for lmr400 but if thasts to expensive try for rg-213. when you buy it try to buy it in a length that is multipels of 18 feet times the velocity factor(vf). the vf for rg213 is 66% and for lmr400 is 85% so use those numbers (.66=12 feet or .85=15 feet 3 5/8 inches) and cut it only a couple inches longer then the number of multiples of those velocity factored 1/2 wave lengths that you need to reach your antenna. that way the swr meter or radio will see the antenna instead of the coax. with 1/2 wave multiples the equipment thinks its hooked directly to the antenna and you get the most honest reading of whats really going on at the antenna [/QUOTE]

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