[Elecraft] Smoke detectors

[Lou Mecseri]

I would also check with my insurance agent   before making such a switch.

73, Lou KE1F

On 10/29/2020 5:45 PM, Jim Miller wrote:
> Strongly suggest contacting county fire marshal before selecting wireless
> only detectors.
>
> You don’t want to violate code and have any insurance claim denied if these
> is an event.
>
> Jim ab3cv
>
>
>
> On Thu, Oct 29, 2020 at 5:38 PM Jim Brown <jim at audiosystemsgroup.com> wrote:
>
>> Most RFI to/from ham radio and "devices" is caused by poorly designed
>> electronics using interconnected wiring as TX/RX antennas. Because of
>> the frequencies on which they operate, WiFi-connected devices with no
>> exterior wiring are inherently FAR less likely to create or receive RFI
>> IF they operate on internal batteries. If running from the AC line or a
>> switching power supply (wall wart, wall lump, etc.) the PSU will almost
>> certainly create RFI noise and wiring both on the AC and DC side will
>> radiate it.
>>
>> Bottom line -- choose stand-alone devices with internal batteries and no
>> external wiring for minimum RFI.
>>
>> In your situation, I would try one of them before returning them.
>>
>> 73, Jim K9YC
>>
>> On 10/29/2020 12:57 PM, Harlan Sherriff via Elecraft wrote:
>>> Dave, I totally agree. I am sure the “problem” the manufacturer is
>> cautioning about is RF, since my original post was about “wireless
>> connected” detectors. My gripe was nothing in the sales literature warned
>> against it. Not till I bought the units and read the installation guide
>>> Sent from my iPhone
>>>
>>>> On Oct 29, 2020, at 3:51 PM, Dave B via Elecraft<
>> elecraft at mailman.qth.net>  wrote:
>>>> Well, RF (AKA "Radio Waves") can falsely trigger all sorts of equipment
>>>> that was not "designed" to work with, or be influenced by them.
>>>>
>>>> That is the classic EMC Susceptibility or Immunity problem.  Basically,
>>>> poor design and/or implementation of the affected (or sometimes bad
>>>> installation of an otherwise good) device.
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to jim at jtmiller.com
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to lmecseri at cfl.rr.com