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Author Topic: preventing antenna corrosion...  (Read 775 times)
BV2OZ
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Posts: 5




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« on: November 03, 2001, 07:12:17 PM »

I live in an unusual area near to two sources of atmospheric corrosion: small amounts of ordinary city smog and slight emissions of mineral gas from volcanic formations...  I have noticed that aluminum and other metals corrode in this environment.  I have a new Hustler antenna, so, I wonder if it is okay to clear-coat it?  If I spray the whole thing with a transparent poly-paint, would that inhibit the resonance, receptivity or transmission capabilities of the antenna?  Any advice or experience about protecting antennas from corrosion, please offer your suggestions!  Thanks.

bv2oz
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WB2WIK
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Posts: 20612




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« Reply #1 on: November 05, 2001, 11:07:00 AM »

Clear-coat will have no effect at all, electrically.  This has been a recommended practice for marine environments for several decades, and the antennas are not modified in any way.

I've also used marine spar varnish, which isn't necessarily clear, and rust inhibiting paint, which is usually very opaque and changes the color of the antenna, without any impact on resonance or performance.  In fact, I've intentionally used "camoflage" paint, of outdoor foliage colors (greens, tans, browns), to help "hide" antennas and this has been effective for the purpose and also had no impact on the way the antennas worked.

73, WB2WIK/6
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KL7IPV
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Posts: 984




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« Reply #2 on: November 12, 2001, 11:23:59 PM »

When you assemble the antenna, smear some "No-Ox" on the parts that go together to keep them from corroding and they will also bond electrically well. The stuff is used for power connectins in telephone power rooms where they run hundreds of AMPs of DC power for the switching centers. I use it on my beams and verticals and it is great. As far as painting, unless you are going to use a lead based or metallic based paint, it will not affect any antenna performance. Good luck.
73
Frank
KL7IPV
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