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[RFI] Non-RF sensitive hardwired smoke/fire alarms?

To: RFI List <rfi@contesting.com>, k9yc@arrl.net
Subject: [RFI] Non-RF sensitive hardwired smoke/fire alarms?
From: Kelly Johnson <n6kj.kelly@gmail.com>
Date: Wed, 9 Jul 2014 20:25:21 -0700
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
I would also be interested to hear about others' experience with hardwired
smoke/fire/CO2 detectors.  Building codes now require new construction to
have hardwired/interconnected smoke detectors.  I read lots of horror
stories about hardwired smoke detectors on the web.  All of the ionization
type smoke detectors and CO2 detectors in my house have no RFI/EMI
problems, but both of the photoelectric fire detectors chirp when I run
QRO.  I have to pull out the battery when I run QRO.  That wouldn't be so
easy with a hardwired detector, so I'd like to know how to avoid problems.
Will ferrite beads on the leads be sufficient?  Are there brands that are
known to be less problematic?

On Mon, Jul 7, 2014 at 10:20 PM, Kelly Johnson <n6kj.kelly@gmail.com> wrote:

> I am looking for high efficiency lighting (CFL/LED) for a new kitchen, but
> I don't want an increase in RFI as a result.  Building codes now require at
> least 50% of the wattage in the kitchen to be from high efficiency (ie.
> non-incandescent) lighting.  No, I don't want to install high efficiency
> stuff and then replace it after the inspector leaves.
> I read the Oct 2013 QST article on this topic and it basically suggests
> that most name-brand LED lights with FCC approvals will probably be ok, but
> it's a bit of a gamble.  They suggest trying various brands, etc.
> Since this is a brand new kitchen, I may have more options than just
> looking for low-RFI bulbs.  All of the electrical will be getting done from
> scratch.  Are there things others have done in their new construction to
> use high efficiency lighting without an increase in RFI?  I'm looking for
> known solutions.  I'm looking for people that have actually installed
> things that work.
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