[RFI] CO2 detectors and RFI

[dalej]

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 at 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 at contesting.com 
>> http://lists.contesting.com/mailman/listinfo/rfi
>> 
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