If the alloys are not the same, corrosion will certainly develop
resulting in poor performance. The loss will be gradual and probably not
noticed until you swear the ionosphere has fallen to the ground or that
the front end of your rcvr is fried.
I used pop rivets and KLM goo. I considered sheet metal screws but they
were too long for the capacitors which have tubing running thru them.
Shorter ones wouldn't hold due to the taper or lack of threads at the
tip area. You could drill and tap for machine screws but that will add
hours to the assembly of an antenna that already requires a fair amount
of time to put together.
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c__; c__; '-..'>.__
GEO de Soquel
George M. Badger III/W3AB w3ab@qsl.net http://www.mbari.org/~geo
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