[TowerTalk] Copper and Aluminum

[Dave D'Epagnier]

Richard, for the same application I used 0.005" thick stainless steel
shim stock. I put a small amount of Noalox on both sides of the
stainless, wrapped it around the round tower leg and then clamped my
copper strap to the stainless with a ground rod clamp. It's thinner,
more flexible, and more conductive than a thick SS hose clamp. The stuff
is available from McMaster-Carr for $14 (life time supply). If you've
got angle tower legs, aluminum pickup truck bed topper clamps work real
good.

--Dave
K0QE

	----------
	From:  Richard Spindler [SMTP:spindoc@digital.net]
	Sent:  Wednesday, November 10, 1999 4:46 PM
	To:  TowerTalk Reflector
	Subject:  [TowerTalk] Copper and Aluminum


	Can copper ribbon be clamped directly to an aluminum tower leg?

	I know you can't clamp copper directly to a galvanized leg, but
I am
	thinking it might be OK with aluminum.  I am erecting an
aluminum tower.

	Anyone know for sure?  I looked at a galvanic table published
somewhere
	in the reflector archives and knew less when I finished than
when I
	started.  According to that table, best as I could determine,
anything
	could pretty much be clamped to anything as long as the
algebraic
	difference was less than something like 10v, and none of the
differences
	were more than a couple of volts...  Anyway, I couldn't make it
out!

	Inquiring minds want to know!

	Doc, N9AM


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