[Elecraft] K3 and wireless intruder alarm

Jim Brown jim at audiosystemsgroup.com
Sat Jul 13 13:37:23 EDT 2013


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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