Two models that were tested in the ARRL Lab were 58 dB over the limits. (They
seemed to be the same design, rebranded.) There is no doubt that these would
devastate the AM broadcast band. If you are listening to an AM broadcast
station right at its coverage limit, it would be completely covered up right
next door to many of these grow lights. Some are clean, but some are not.
Ed
________________________________
From: RFI <rfi-bounces@contesting.com> on behalf of Rob Atkinson
<ranchorobbo@gmail.com>
Sent: Monday, December 16, 2019 6:48 AM
To: rfi <rfi@contesting.com>
Subject: Re: [RFI] Tesla's Response to Solar Panel RFI
<Respectfully, in every case here but one, (and I have been involved
in maybe 10 to 15 in the past three years), the RFI from grow ops were
unheard on the AM band with a local station tuned in, and while in
front of the offending grow op. I am sure that in some cases it is
hearable on an AM channel, but so far here, (and I have expressly,
checked at each location), I have had very little luck with this. It
is one of the first things I check for, so I can involve the CE of the
AM station being affected...>
Dave you could not be more spectacularly incorrect. You're mistake is
generalizing based on your own limited experience. The broadcast
industry is extremely concerned about the noise floor. Around here,
even 50 KW AMs are affected, and you don't have to be outside their
primary service contour to tell. All you need do is google SBE AM
noise floor. This is probably the single biggest issue in medium
wave AM today.
73
Rob
K5UJ
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