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Author Topic: coax feedline  (Read 257 times)
KB1NKJ
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Posts: 10




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« on: October 07, 2007, 04:34:56 AM »

The length of cable actually needed is 30-35ft. I also have 45ft of used LMR400 that came with house (about 4yrs old? only about 15 ft. of it was outside of house exposed to weather.It seems to be in good condition except for small scape marks on outsite, no hard bends in it and connectors look good.maybe I could use that instead with excess coiled at base of antenna where it enters house?
Thank you again for all your help!!
                   73
                     Joan KB1NKJ
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K1CJS
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Posts: 6055




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« Reply #1 on: October 07, 2007, 06:33:20 AM »

How do the ends look?  Are the connectors in good shape?  No corrosion?  If everything looks OK and the scrapes are only that--scrapes, not cuts--then try it, it should be OK.

The only thing you should do, though is try to string out the length instead of coiling it.  Maybe you could route it along in the basement?  If left outside, the coil becomes somewhat like a catch-all, anybody going by could snag oto it and pull it, possibly damaging it.  If coiling is unavoidable, do it inside, behind the table or desk that is your operating position.

Good luck and 73.
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WA9SVD
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Posts: 2198




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« Reply #2 on: October 07, 2007, 07:09:53 AM »

If the connectors on the LMR-400 are in good shape and properly installed (or you choose to install new connectors, not that bad an idea if the originals are questionable) it would be preferable to using RG-213/U at VHF or higher.  Not because of the loss in the additional length of RG-213/U, but because the LMR-400 has inherehtly lower loss than '213.

    (It might be wise to replace the connector(s) on the LMR if exposed to the elements; doing so would also allow you to inspect the cable for possible water/weather damage.)
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