On 9/25/2011 10:53 PM, Jeff Liebermann wrote:
On Sun, 25 Sep 2011 Jeffrey wrote:
The grounding inside and outside the building was your typical "Amateur"
installation. 3/4" water pipe with 90 degree elbows soldered together.

Lousy cross sectional area. Hopefully, they left one end open. If
the copper pipe were sealed at both ends, and it took a lightning hit,
the air inside would get rapidly very hot and probably turn the pipe
into a fragmentation bomb. If they really want to blow out the wall,
fill it with water.

Of course the end wasn't open. And there was a pair of Tee's in
the middle so it could zig zag across the ceiling. There was a
second ground pipe running around the outside of the building.

Other sites had a decent ground using #4 solid copper wire and
exothermic connectors. This, obviously, was not one of them.

Our real protection was the water tank owned by the DWP slightly up
the hill from us. Similar to ranger tower protecting Santiago.

Bowmont water tank, off Mullholland between Laurel and Coldwater
Canyons?

I don't think so. This one was off of Cyprean Dr. Via Hollywood Blvd.
http://g.co/maps/dw5py 2050 CYPREAN DR. LOS ANGELES, CA

If that link works properly, you can see a nice clear picture of the
antenna rack.

Jeff-1.0

--
"Everything from Crackers to Coffins"