We have ADT wireless and no problems

Reggie k6xr
Amateur radio 58 years
DXCC, RCC, WAC

Sent from my iPad

On Jul 13, 2013, at 10:37 AM, Jim Brown <[email protected]> wrote:

> On 7/13/2013 10:25 AM, David Andrews wrote:
>> Am I likely to trigger the alarm?
> 
> Alarm systems in general, at least in North America, are notoriously bad for 
> RF susceptibility. The coupling mechanisms are primarily poorly filtered 
> signal wiring, Pin One Problems, poor circuit layout, and poor shielding.  To 
> the extent that it has less external wiring, a wireless system MIGHT be less 
> problematic, but those other mechanisms are still there.  Suppression methods 
> are addressed in http://k9yc.com/RFI-Ham.pdf
> 
> 73, Jim K9YC
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