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: [email protected] <[email protected]> On Behalf Of Steve L Sent: Saturday, July 29, 2023 10:42 AM To: [email protected] 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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
