[600MRG] (Fwd) Re: [RFI] Smoke-alarm Interference - not TVI but SAI

[Kenneth G. Gordon]

OK, Gang, here is a reply I got this morning. Perhaps it will help?

Ken W7EKB
------- Forwarded message follows -------
To:	<RFI at contesting.com>
Date sent:	Wed, 22 Oct 2014 10:47:16 -0400
Subject:	Re: [RFI] Smoke-alarm Interference - not TVI but SAI


I don't know anything about your issue with the smoke alarms but just after I 
moved to Florida and set up my station, I began getting into my next door 
neighbor's alarm when it was turned on.  ANY amount of HF rf would set it 
off. I discussed this with a friend who lives in Virginia where I had just moved 
from. We did a few tests and it appeared that the problem could be solved by 
putting bypass caps at the ends of the leads to the KEY PADS located just 
inside the front door, inside the laundry room off the garage, and on the 
master control box leads to the sensors.  This worked and I have never had 
a problem since.  If the issue is with some kind of a wireless system, the 
results may vary or the fix might not work at all. But it did here.  '73, -Mike  

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