If you are using Attic Antenna's ...... I would focus on the Power lines. wa6vab Ray k3
On Sat, Jul 29, 2023 at 10:11 AM Rick NK7I <rick.n...@gmail.com> wrote: > Heh, try Hardee board (concrete) or aluminum siding, or stucco (wire > based to hold it together). Or clay brick roofing. > > BUT that also contains wifi within the structure for network security hi > hi. > > If the antenna choice is HOA based (yuck, ick, ew) perhaps laying the > invisible wire ON the roof will work (better) for you (install on a week > day while everyone is at work/school). The other issues include potent > RFI in the building (smoke detectors are great receivers, particularly > on 40M; GFCI devices are second best). > > 73, > Rick nk7i > > On 7/29/2023 9:46 AM, Dr. William J. Schmidt wrote: > > A bigger concern for attic antennas is the use of "radiation shield" > plywood on the roof of houses build in the last 10 years or so that turn > the attic into a Faraday cage. The single most annoying reason cell phones > don't work inside your houses anymore. > > > > > > Dr. William J. Schmidt - K9HZ J68HZ > > > > > > -----Original Message----- > > From: elecraft-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net> > On Behalf Of Steve L > > Sent: Saturday, July 29, 2023 10:42 AM > > To: elecraft@mailman.qth.net > > Subject: [Elecraft] Grounding, Lightning & Attic Antennas > > > > Jim & Co., > > I’m reading all the recent posts on the Elecraft reflector concerning > lightning protection… > > > > After a recent move, I am working on the design and construction of > attic antennas for both HF and V/UHF. The topic of grounding and/or > providing lightning protection for this installation has baffled me given > no outside presence of any antenna components. While not so concerned > about a direct strike (perhaps naively?) I am concerned about induced > currents and resulting equipment damage - where clearly disconnection may > be the best protection. > > > > Might anyone have any good references for reading/study on grounding > recommendations, how to’s, best practices, etc. for attic antennas? > > > > Thanks a bunch, > > > > 73, > > Steve > > AA8AF > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to b...@wjschmidt.com > > > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to rick.n...@gmail.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wa6...@gmail.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
