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[RFI] CO2 detectors and RFI

To: RFI List <rfi@contesting.com>
Subject: [RFI] CO2 detectors and RFI
From: dalej <dj2001x@comcast.net>
Date: Wed, 23 Oct 2013 16:10:36 -0500
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Just a heads up.  

I purchased a Kidde NightHawk CO2 detector model KN-COP-DP-LS, it is designed 
to plug into a wall outlet plus it has a 9 v. battery backup and LED readout.  
While transmitting on 80 meters after a while it starts audible warning, very 
loud.  I called the company tech support line and they did not have any 
solution.  As an experiment I plugged the detector into a two wire extension 
cord and wrapped the extension around a #31 mix snap-on, then tested and it did 
not go off.  The tech support said not to use an extension cable with the 
detector.  

So if you are looking for a CO2 detector be aware of this problem with 80 meter 
RFI tripping the detector.  I went to strictly battery powered CO2 detector and 
that works fine.  

Dale, k9vuj
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