[TowerTalk] Fwd: tower grounding
HansLG at aol.com
HansLG at aol.com
Mon Sep 1 02:56:53 EDT 2008
I believe the rebar cage will be totally isolated from ground as it is
surrounded by concrete. The concrete is a relative good electric insulator and
will therefor not be good for grounding the tower. You have to add grounding
rods outside the lump of cement holding your tower in place.
There is plenty of information of the "best way" to ground the tower. Two,
three grounding rod driven 8 feet into ground is, I believe, considered
acceptable grounding for lightning strikes. When it comes to RF grounding the field
is open for suggestions. Little depending on the surrounding ground I,
myself, believe in radials stretch just above or on the surface of ground. Other
folks believe the radials have to be buried or left several feet above ground.
The length and amount of radial is a science by itself and I think the
advice is:" The more the better", up to some point that varies between 15 to 60
Have fun with the tower and stay safe. K1TTT has some serious safety
warnings on his web site that you should look at.
From: dragonsong at sbcglobal.net
To: towertalk at contesting.com
Sent: 8/31/2008 11:06:21 P.M. Eastern Daylight Time
Subj: [TowerTalk] tower grounding
First I want to thank all of you for the info so freely dispersed on this
reflector. I've learned a lot in just the month I've been getting the
Now then, I just today made a deal for my very first tower. It seems to be a
bit over a Rohn 25 size but not quite a Rohn 30. It's about 60 feet in
length and will be bolted to the house and set in a rebar and concrete cage
My questions are these, is it possible to use the rebar cage as a part of
the grounding system for this tower? And, if so, what is the best manner of
making that grounding connection?
Thanks up front for your consideration and responses.
Tearlach de w8sco
There's nae man sae deif as he tha' winna hear.
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