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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