On 25/08/2010 11:10, RussellMc wrote:
> With particular relevance to corrosion resistance of screws exposed to we=
ather.
>
Don't use Stainless steel on Aluminium structures either.

The aluminium rots.

Don't use Gold Connectors against tin plated. Any damp and the Gold will=20
rot the Tin.
Gold only to Gold is the safe way.
Also Gold plated tracks can be poorer for RF. Part of the reason can be=20
the barrier layer of plating has magnetic properties and also gold has=20
higher resistance than silver or lacquered polished copper (tinning=20
copper makes it poorer at RF).

Silver oxide on a silver plated aerial allegedly has superior properties=20
to rust or gold plate. Something to do with Silver oxide's magnetic and=20
conductive properties? Anyone any more insight on that?

Anodize or weather/oxidise  freshly cut / polished aluminium in=20
controlled fashion before painting or mounting outdoor or it can flake=20
and pit badly and have much worse RF properties for an aerial?

--=20
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