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Oxidation on Mag Loop Antenna

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ronsch:
Does anyone know whether oxidation on an aluminum mag loop surface reduces performance over time? I have a Pixel Pro-1B receive-only non-resonant amplified loop antenna that has been in the weather for several years.

Thanks, Ron
K2RAS

T3sl4co1l:
As long as it's solid I doubt you'll notice a difference.  Mind possible corrosion of internal surfaces / structures / connections.

Tim

AF6LJ:
Since Aluminum oxide is an insulator I suspect there won't be a problem.

borjam:

--- Quote from: ronsch on April 10, 2016, 12:31:57 am ---Does anyone know whether oxidation on an aluminum mag loop surface reduces performance over time? I have a Pixel Pro-1B receive-only non-resonant amplified loop antenna that has been in the weather for several years.

--- End quote ---
Being non resonant it shouldn't be a problem. It might be for a resonant, transmitting loop which requires a very high Q to be efficient. But for a receiving antenna I don't think it will be a problem at all. Moreover, aluminum tends to form a passive oxide layer, it doesn't get deeper as far as I know (unlike other metals like iron).


(Wellbrook ALA-1530+ and MFJ1788 user here)

donmr:
In normal air aluminum always has an oxide on its surface but its pretty clear.

Are you seeing corrosion?

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