Yes, interesting, ....but,........, Evidently it addresses only microwave
frequencies. Likely starting at the cell phone frequencies in the 800 MHz
band and on upward.
Over the years, there have been many offerings of spray-on conductive
coverings to remediate EMC/RFI in general. If properly applied, they
worked for microwave as well as amateur HF frequencies. Some worked better
than others. Some flaked off and rendered the circuitry inside
inoperative. A good and workable alternative was vacuum sputtering of
conductive material into the plastics. That alternative cost more, of
course, so its applications were limited. For a while when things were
done in the US, HP used this technique on their laptops for EMC control.
Carbon loaded plastics were also marginally effective, but too much carbon
rendered the plastics far too brittle. These did well even at relatively
low frequencies - typical "DC to Light" - if properly applied.
What I read in the attached article addresses only microwave frequencies
and is pretty much useless for anything much below (I assume) 800 MHz.
It's not effective for HF.
Dave - WØLEV
On Mon, Jan 16, 2023 at 9:54 PM Dave (NK7Z) <dave@nk7z.net> wrote:
> https://www.sciencedaily.com/releases/2023/01/230116112540.htm
> --
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist, RFI
> ARRL Asst. Director, NW Division, Technical Resources
> _______________________________________________
> RFI mailing list
> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
>
--
*Dave - WØLEV*
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