[TowerTalk] More questions Lighting protection

Sun, 01 Oct 2000 16:58:46 -0400

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Guy's, 
 
Read the postings on Lightning arrestor protection and went to
Polyphaser&nbsp; web site.
<a href="http://www.polyphaser.com/" eudora="autourl">http://www.polyphaser.</a><a href="http://www.polyphaser.com/" eudora="autourl">com</a>. 
They have a paper on the grounding of Ham stations.&nbsp; Very
interesting info.&nbsp; I am Interested in opinions about the way my
shack is grounded 
 
Question 1 
They say to ground the coax shield in three locations,&nbsp; tower top,
bottom of tower, and where the cable enters the house.&nbsp;&nbsp;&nbsp;
Am I to understand that I should cut the insulation off of the Hardline
and ground the Hardline shield to the three locations?&nbsp; How do you
make a good low Z connection to the Hardline and is there a problem with
water getting between the insulation and copper shield. 
 
Question 2 
I have 2 ground rods, one at the bottom of the tower and one where the
lines enter the house,&nbsp; They are about 8 feet apart. 
I have each tower leg grounded to the ground rod and&nbsp; 1-1/2 inch
braid between the ground rods and the braid continues into the house to
ground the radios.&nbsp;&nbsp; The braid is screwed along a metal desk
back that the radios sit on and the radios are tied to this ground.&nbsp;
The 220 neutral also goes to this ground .&nbsp; Shack is below ground
level ( split level house) which makes the floor about 3 feet below
grade.&nbsp; The floor is concrete.&nbsp;&nbsp;&nbsp; 
 
COMMENTS??? 
 
de Norm&nbsp; N8NH 
 
 
 
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