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

paul swed paulswedb at gmail.com
Fri Jan 20 13:48:11 EST 2012

It should work fine.
BUT and there always is a but.
If you have an issue with the xmit antenna and significant inbalance that
may cause issues with the coax connected to the gps antenna
I do run the GPS antenna right using 1/2" low loss hardline next to the 5/8
hardline at up to 1 KW never noticed anything.

On Fri, Jan 20, 2012 at 1:41 PM, James Robbins <jsrobbins at earthlink.net>wrote:

> 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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