🚀 go-pugleaf

I am building an outdoor antenna for radio telemetry.  It will
receive signals at about 100 MHz.  It will be made of aluminum
tubing.  Because of environmental constraints, the antenna will
be cleaned regularly with high temperature, high pressure water.

Question:
What paint or other coating material can I use to avoid oxidation
of the aluminum?  I am assuming that aluminum oxide is not a very
good conductor and will decrease the radiation efficiency due to
the skin effect.  Certainly many paints will be as inefficient
as the oxide, so the choice of coating material is probably important.
Mosely (a now-defunct antenna company) once made a clear coating
solution for antennas, but I do not know what material they used.

Please offer suggestions.  Practical ones would be more valuable than
theoretical ones, but both are welcome. 



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Andrew Mitz          |    NIH Animal Center
Biomedical Engineer  |    Poolesville, MD
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All opinions expressed are my own.