[Top] [All Lists]

Re: [TowerTalk] Coax shield grounding

Subject: Re: [TowerTalk] Coax shield grounding
Date: Sun, 31 Aug 2003 08:14:20 EDT
List-post: <>
In a message dated 8/30/03 6:53:37 PM Pacific Daylight Time, writes:

> What's the best way to ground coax shields at the top and bottom of my 
>  tower?  I have seen the ICE model 360 and 380 blocks, but these seem to 
>  involve piercing and re-waterproofing of the coax jackets at each 
>  block.  It would be possible to put on connectors and bracket barrel 
>  connectors to the tower leg, but I hesitate to add more connectors. 
    All commercial coax runs are grounded by removing some of the outer 
jacket and installing a compression ground clamp (Andrew, Polyphaser, etc.) on 
shield. The whole thing is weatherproofed and the ground wire sticking out is 
attached to the tower. 

    Commercial specs call for cable grounding down the tower every 100' and 
at the bottom where it turns horizontal to go into the building. 

    There's no problem with more connectors inline - the insertion loss is 
insignificant. The biggest potential problem is poor weatherproofing. A couple 
layers of tape, a layer of butyl rubber vapor wrap, more layers of tape, and 
you're good to go with a commercial, bombproof joint.

Steve     K7LXC
Professional tower services for commercial and amateur 

See:  for "Self Supporting Towers", "Wireless Weather 
Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions 
and ask for Sherman, W2FLA.

TowerTalk mailing list

<Prev in Thread] Current Thread [Next in Thread>