[TowerTalk] Interference to CO Alarm

[Kelly Johnson]

Or buy a different model.  I have several CO monitors in my house and
none of them are affected by my QRO operations.


On 11/6/06, Jim Lux <jimlux at earthlink.net> wrote:
> At 12:28 PM 11/6/2006, you wrote:
> >Hello All,
> >
> >I have an RF problem with my Kidde
> >Carbon Monoxide Alarm.
> >The alarm goes off when I am transmitting
> >on 40 or 20 meters.
> >
> >Any suggestions as how to filter the alarm?
>
> Is it AC or battery powered?
>
> If the former, try ferrites around the power lines
>
> If the latter, enclose it in a shielding enclosure (obviously, with
> holes in it so you have air flow, etc.)  Spraying the housing with
> conductive paint may be all that's needed.  The conductive enclosure
> needs to be all encompassing and with no conductors penetrating the
> shield wall (but holes are ok).
>
> For a temporary test, try wrapping it in aluminum foil.
>
> At 20 m, you can have a HUGE hole in the enclosure and still be
> fairly well shielded.
>
> Jim Lux
>
>
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