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

To: w6rgs@cox.net
Subject: Re: [RFI] Non-RF sensitive hardwired smoke/fire alarms?
From: "Dale J." <dj2001x@comcast.net>
Date: Fri, 11 Jul 2014 12:06:32 -0500
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
The Kidde I had that went off when using even the transceiver (100 watts) was 
the model KN-COB-LP-LS and plugged into a wall outlet, I see yours is 
hardwired, maybe some difference in construction.

Dale, k9vuj



On 11, Jul 2014, at 11:52, w6rgs@cox.net wrote:

> Kelly,
> Last year, we re-wired the entire house (power, phone, cable tv and data) and 
> installed new Kidde KN-COSM18 hardwired detectors, including one in the 
> shack.  No issues, even when the SB-220 is used.
> Bill W6RGS
> 
> 
> At 08:25 PM 7/9/2014, Kelly Johnson wrote:
>> 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?
> 
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