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

Mark Spencer mspencer12345 at yahoo.ca
Fri Jan 20 13:46:07 EST 2012


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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