[Elecraft] Grounding, Lightning & Attic Antennas

[Rick NK7I]

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-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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