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Re: [RFI] RFI With Smoke Detectors

To: Richard Battles <wb4byq@gmail.com>
Subject: Re: [RFI] RFI With Smoke Detectors
From: Stanley Zawrotny <k4sbz.stan@gmail.com>
Date: Tue, 18 Aug 2015 11:13:38 -0400
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Unfortunately, replacement is not an option. It is a two family house that I 
built with my daughter and her husband. We have the "mother-in-law" side. There 
are about two dozen of them wired throughout the two sides of a large house 
with fairly new construction. I don't mind the chirping so much in my shack, 
but the chirping over in their side is what is most of the problem. The system 
is set up so that a fire on one side causes alarms to sound on both sides.

Stan, K4SBZ
(850) 893-5003 (H)   (850) 590-6617 (M)

"Real radio bounces off the sky."

> On Aug 18, 2015, at 10:42 AM, Richard Battles <wb4byq@gmail.com> wrote:
> Replaced the group with independent units that use batteries.  the reason was 
> that I noticed that the circuit board was showing signs of heat stress around 
> a diode and resistor inside the unit.  The security alarm system was upgraded 
> to
> handle smoke detectors as well.  No RFI issues.
>> On Tue, Aug 18, 2015 at 6:17 AM, Howard Lester <howard220@gmail.com> wrote:
>> To clarify for others, I don't think you mean the detectors are battery
>> operated. Rather, they (like mine in my hard-wired system) have batteries
>> (typically 9V) used for backup power.
>> Howard
>> On Mon, Aug 17, 2015 at 9:34 PM, Stan Zawrotny <k4sbz.stan@gmail.com> wrote:
>> > ​​
>> >
>> > >>You have a somewhat unusual configuration compared to most that just
>> > install battery operated, independent units.
>> >
>> > Actually not. Wireless smoke detector systems are very common. If one
>> > detector alerts, it alerts all detectors throughout the house. Each unit is
>> > battery operated. But independent units are not installed in modern homes
>> > any more.
>> >
>> > ​
>> >
>> >
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