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rmhou(at)yahoo.com
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 Posted: Thu May 22, 2008 10:04 am Post subject: Antenna installation |
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My Terra radio installation instruction says "Proper attachment of any antenna to the aircraft surface is of primary importance. Carefully clean all paint and corrosion off the mounting surface and apply an anti-corrosion treatment."
Question 1., does "clean all paint" mean strip all paint to bare aluminum?
Question 2., what type of "anti-corrosion treatment" should I use?
Thanks in advance,
Robin Hou
[quote][b]
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douglist(at)macnauchtan.c
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| Posted: Thu May 22, 2008 12:43 pm Post subject: Antenna installation |
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At 11:00 -0700 5/22/08, Robin Hou wrote:
My Terra radio installation instruction says "Proper attachment of any antenna to the aircraft surface is of primary importance. Carefully clean all paint and corrosion off the mounting surface and apply an anti-corrosion treatment."
Question 1., does "clean all paint" mean strip all paint to bare aluminum?
The idea is to be sure the metal parts of the antenna are well grounded to the skin of the aircraft. Assuming you're talking about a VHF comm antenna the aircraft skin works like a more or less flat mirror making the antenna look twice as long and fed at the center.
The screws that hold the antenna down are not very good as conductors of radio frequency current. Metal to metal all around is good.
Question 2., what type of "anti-corrosion treatment" should I use?
They're probably thinking alodyne but I doubt that it's necessary. Others suggest a ring of bathtub caulk (silicone) around the outside of the installed antenna. What you don't want is an insulator like an anodized surface or a paint primer.
--
--> The best programming tool is a soldering iron <--
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