[Elecraft] Grounding, Lightning & Attic Antennas

[Dr. William J. Schmidt]

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-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of Steve L
Sent: Saturday, July 29, 2023 10:42 AM
To: elecraft at 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
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