On Fri, 13 Feb 2004 14:41:50 -0500, w_tom wrote:

The antenna requires an earth ground, first, as required by
National Electrical Code. That mounting rod should be
connected to an eight+ foot earth ground rod (available even
in Home Depot and Lowes). This required by NEC for human
safety, but also to protect transistors.

Where in the NEC code does it say that you need an earth ground to
protect transistors?


Incoming wire should enter building at the service entrance
so that a ground block (maybe $1 at Radio Shack or Home Depot)
connects 'less than 10 feet' to the building's single point
earth ground. Same earthing ground that also connects to AC
electric, telephone, and cable TV wire. Do not even think an
AC receptacle or water faucet will provide that necessary
earthing.

NEC requirements have changed since 1990 to require a
service entrance ground rod. You may need to install this
earth ground rod at the service entrance. Many homes don't
even have that much which is another reason why some homes
suffer household electronics damage.

Principles are demonstrated in this figure. Note an antenna
tower and building each have their own earth ground. Each is
earthed as if it were a separate structure. Every incoming
wire makes a connection to that earth ground. To make the
'system' work better, a ground wire interconnects the antenna
and building earth grounds:


What figure?

Do you work for erico?

http://services.erico.com/public/lib...es/tncr002.pdf

Whats this link? Have one that works?



Static is irrelevant. A few hundred volts of static will
not damage any properly built radio. You could even static
shock your car radio antenna or a portable radio antenna
without damage. That would be as much as 18,000 volts - and
still no damage.

Sorry, static is not irrelevant. You need to read up on static damage
before you make such foolish posts. Every electronics manufacturer in
the world takes great lengths to control static. When you talk about
static shocking your car radio antenna, or portable radio antenna
without damage, you need to look at other paths that the static
electricity would be taking. Would you allow me to connect your CB
antenna connection of your radio directly to an A.C. line? Thats only
115 volts.


The earthing is required by NEC for human safety AND also
provides transistor safety. If lightning is provided a path
to earth ground via that exterior rod, then it too will not
seek earth ground, destructively, via your radio. Direct
strike lightning damage is that easily avoided.
Unfortunately, too many don't have necessary earthing, suffer
damage, and then declare nothing could have helped.
Generations of technical history say otherwise. Its all about
earthing - as even required by code.

Last time I read, current seeks all and any paths to ground. Has that
changed? Direct strike lightning damage isn't as easy as earth
grounding your antenna. Hopefully no one else will believe your B.S.
that all you need to do is earth ground your antenna and electrical
entrance box unless you are willing to pay for any damage that they
receive following your instructions.


Zeeeeeeee3 wrote:
Ok thanks. Follow-up question then.......why do I want to get rid
of the static? What if I don't?
Thanks