[time-nuts] T'bolt antenna lead-in running near HF RF transmitting coax

EWKehren at aol.com EWKehren at aol.com
Fri Jan 20 14:16:17 EST 2012


In the past when I had that problem I used copper pipes as feed through the 
 wall and bend the pipes with a pipe bender one on each side. Never had a  
problem, do not know if I would have other wise.
Bert Kehren 
 
 
In a message dated 1/20/2012 1:46:32 P.M. Eastern Standard Time,  
mspencer12345 at yahoo.ca writes:

I've run  my GPS antenna lead along with coax carrying 100 Watts on HF and 
50 watts on  VHF / UHF with no known issues.

I do have ferrite chokes on all my feed  lines.

I also use the Symmetrciom 53532 antenna.

--- On Fri,  1/20/12, James Robbins <jsrobbins at earthlink.net> wrote:

>  From: James Robbins <jsrobbins at earthlink.net>
> Subject:  [time-nuts] T'bolt antenna lead-in running near HF RF 
transmitting  coax
> To: time-nuts at febo.com
> Received: Friday, January 20,  2012, 1:41 PM
> Can I run the coax feed-in from a
> Symmetricom  58532A GPS antenna (feeding my T'Bolt) adjacent
> to coax which is  carrying HF RF of 500 watts?  I have a
> 1.5"  hole through an  outside wall in my house through
> which my HF ham antenna coax passes  (LMR400 coax).  Can
> I safely run the GPS antenna coax through the  same hole
> which would put the coax parallel with and touching  the
> other coax for about 8 inches.  If not, how much
>  separation would be advisable?  Many thanks.  Jim
> Robbins  N1JR
> 
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