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Re: [RFI] CO2 detectors and RFI

To: dalej <dj2001x@comcast.net>
Subject: Re: [RFI] CO2 detectors and RFI
From: Christopher Brown <cbrown@woods.net>
Date: Sun, 27 Oct 2013 16:57:34 -0800
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
The models I was talking about have a wall-ward with cord that snaps
into the unit.  They can be plugged in directly, or the wart can be
popped out and the unit wall mounted.  That leaves a cord from the wart
to the unit that can be wrapped on a toroid.  This is however a diff
model than the one you have.

On 10/26/13 5:25 PM, dalej wrote:
> Where do you place the toroids?  The mfg said not to use an extension cord.  
> I took one apart and though I see the two wire from the outlet, there just is 
> not enough room for anything like a toroid inside.  How about bypass caps 
> across the line, would that work?
> 
> Dale, k9vuj
> 
> 
> On 26, Oct 2013, at 17:05, Christopher Brown <cbrown@woods.net> wrote:
> 
>>
>>
>> Far as RF trigger...  Both the old NighthHawks and the new ones are
>> triggered by conducted RF.  Attic antenna w/ 100watts... 160 - 10 will
>> trigger.  Remote antenna, still triggers 160 - 40 if running more than
>> 400watts.
>>
>> The toroids take care of that.
>>
>>
>> Looking at the datasheet for KN-COP-DP-LS, it is the smaller direct to
>> outlet type without the removable wart, for use only where you have low
>> outlets.
>>
>>
>> You might look at
>>
>> KN-COEG-3
>> KN-COPP-3
>>
>> These are both larger units with a remotable wart.
>>
>>
>>
>>
>>
>>
>>
>> On 10/23/13 1:10 PM, dalej wrote:
>>> 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 _______________________________________________ RFI
>>> mailing list RFI@contesting.com 
>>> http://lists.contesting.com/mailman/listinfo/rfi
>>>
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