On Sun, 25 Sep 2011 22:11:11 -0500, Jeffrey Angus
wrote:

http://802.11junk.com/jeffl/pics/Old%20Repeaters/slides/LoopMtn02.html
http://802.11junk.com/jeffl/pics/Old%20Repeaters/slides/LoopMtn03.html

Been on Loop Mountain too. And Oat, Lukens and Mt. Wilson.
The "tower" I was referring to specifically though was Hollywood
Hills.

There were plenty of telephone pole antenna "towers" in the Hollywood
Hills during the 1960's and 70's. Most are probably still there. A
steel tower required an elaborate ordeal process compliments of the
planning department. Telephone poles were deemed to be something akin
to a tree, and were easier to permit.

During the 1960's, Ken Sessions (SK) had a GE outdoor box mounted on
top of a telephone pole just below Loop Mountain. His problem wasn't
lightning hits. It was hits from .22, .38, and larger. He reinforced
the inside of the box with armor plate, which worked until someone
used AP ammunition. We offered him cheap space in Gene Clothier's
site on Loop, but Ken refused for some unknown reason.

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.

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?


--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558