Re[2]: [TowerTalk] More questions Lighting protection

[Bob Wanderer]

Hello TT,

I'm also looking for information on grounding systems, and
looked at
the Uni-Kit.   If you use conventional coax, do you still
use the
Uni-kit?   Does it simply clamp around the coax, or do you
have to cut
away the outer insulation to have it contact the braided
ground?
>>>The Uni-Kit will work GB with RG8-sized cables.  I am
unsure, but you might have difficulties with RG8X-sized
cables.  Because of the "softness," you need to be careful
installing the uni-kit on conventional coax, but as long as
you don't employ "gorilla tactics," you should have no
problem.  Yes, you have to cut the jacket because this is
not a clip to keep the coax tied to the tower but a
grounding system.

Another question, is it better to use multistrand copper
wire for your
ground wires from the tower legs rather than an equivilant
size of
solid wire??   I plan to use #4 solid copper but saw some
multistrand
at home depot the other day.  Would it be even better to
take a piece
of 5/8" dia. copper water pipe and flatten it to use it as a
copper
"strap"??  I looked at the copper straps from Polyphaser and
they
seemed very expensive for thin copper material.  Am I
missing
something?
>>Stranded is not advised for a grounding system.  Too much
capacitance between strands.  Solid is the way to go.
Copper water pipe is okay, you need not flatten it out.
However, when I was at PolyPhaser I was disinclined to
suggest water pipe while another tech consultant believed it
a valid method.
Hey, I think 70 cents is outrageous for a quart of milk, but
there are lots of hidden but valid costs involved.  Buy
copper flashing at your home imporvement place; it'll work
good enough instead of the copper strap Poly sells.  Also
try Ron Block at W.R. Block and Associates in southern NJ he
has a source of copper less costly than Poly and he is the
brother of Poly's founder.
73
Bob AA0CY/3
ex PolypHaser technical consultant



73's from.......

Bob Otto
N8NGA@one.net
Cincinnati, Ohio

**********************************************
DXCC 10M         ** DX is !! **        WAS 10M
       There is a very fine line between
         "HOBBY" and "MENTAL ILLNESS"
**********************************************
When trouble arises and things look really bad,
there is always one individual who perceives a
solution and is willing to take command.
      VERY OFTEN THAT PERSON IS CRAZY!
**********************************************
Sunday, October 01, 2000, 6:07:50 PM, you wrote:


>> Question 1
>> They say to ground the coax shield in three locations,
tower top,
WJ> bottom of tower, and where the cable enters the house.
Am I to
WJ> understand that I should cut the insulation off of the
Hardline and
WJ> ground the Hardline shield to the three locations?  How
do you make a
WJ> good low Z connection to the Hardline and is there a
problem with water
WJ> getting between the insulation and copper shield.

WJ> I'll say it before Steve does - Visit
www.championradio.com and look at
WJ> the Polyphaser UNI-KITS and/or look/read about them at
WJ> www.polyphaser.com.
WJ> The UNI-KIT fastens around the bare shield of the
hardline.  You then
WJ> wrap the whole assembly with Vapor-Wrap, then a few
layers of Scotch 88.
WJ> No need to worry about moisture after that.  The UNI-KIT
has a length of
WJ> copper strap with it to attch to your ground.

WJ> Norm, I'll send you a picture of mine.  73


WJ> --
WJ> FAQ on WWW:
http://www.contesting.com/FAQ/towertalk
WJ> Submissions:              towertalk@contesting.com
WJ> Administrative requests:
towertalk-REQUEST@contesting.com
WJ> Problems:                 owner-towertalk@contesting.com



--
FAQ on WWW:
http://www.contesting.com/FAQ/towertalk
Submissions:              towertalk@contesting.com
Administrative requests:  towertalk-REQUEST@contesting.com
Problems:                 owner-towertalk@contesting.com



--
FAQ on WWW:               http://www.contesting.com/FAQ/towertalk
Submissions:              towertalk@contesting.com
Administrative requests:  towertalk-REQUEST@contesting.com
Problems:                 owner-towertalk@contesting.com