I thought of that, but I know where Jim lives and copper pipes stiking through a wall would gather condensation and ice on the inside because it'd conduct the sub-freezing temps inside and maske a real mess. The situation would be reversed in summer.
He could use PVC pipe wrapped with a layer of adhesive copper foil with the seams soldered. -John ============ > 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, > [email protected] 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 <[email protected]> wrote: > >> From: James Robbins <[email protected]> >> Subject: [time-nuts] T'bolt antenna lead-in running near HF RF > transmitting coax >> To: [email protected] >> 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 >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
