In a message dated 97-01-09 23:10:39 EST, you write:
>I'm in the process of rebuilding my 40-2cd to 100 mph rating per W6QHS. I
>found some anodized grade 8 bolts at the local hardward store for a good
>price. Anyone have any experience using these bolts with aluminum? And if
>I use the bolts at the feed point will there be a problem with dissimilar
>metals? Any feedback would be appreciated.
Stainless steel is the first choice, hot dipped galvanized is second.
Anodized are not suitable for outdoor use, let alone a critical electrical
joint like the feedpoint.
Use of any of these metals results in a dissimilar metal situation.
Since the factory uses SS, I suggest you do too. Use a good anti-oxidant on
all connection including the elements and you'll stay out of trouble.
BTW, avoid splitting the coax at the feedpoint. Use a dipole connector
so you can plug a PL259 into it and weatherproof the joint. It's impossible
to keep water out of the split coax arrangement. Cushcraft cheaps out again.
73, Steve K7LXC
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