[Elecraft] Smoke detectors

[Victor Rosenthal 4X6GP]

I had a battery-operated smoke detector that was set off by my 
transmissions. I totally wrapped it in aluminum foil and punched holes 
in the foil to match the openings in the plastic housing. No more trouble.

Of course this wouldn't work with a WiFi unit. But in my experience, 
WiFi appliances have always been less affected by my HF and 144MHz 
signals than wired ones whose wires act as antennas.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
On 25/10/2020 13:13, JP Douglas wrote:
> About 12 years ago we had a carbon monoxide detector in the upstairs hallway not far from the shack. Every time I was on a 2m net (could have been 6m, I forget...)the detector would start chirping, I even lowered power from 65 to 25 watts, same issue. Eventually the thing wouldn’t stop chirping at all so we threw it away, put a smoke detector in it’s place, got a 10 year carbon monoxide detector and put it in the guest bedroom which is further away from the shack and never had a problem again.
> 73 de Jose Douglas KB1TCD Mid Coast ME
> 
> 
> Sent from my iPad
> 
>> On Oct 25, 2020, at 6:36 AM, Geoffrey Feldman <geoffreyf at comcast.net> wrote:
>>
>> The reason to keep smoke detectors from Amateur Radios is that they detect
>> smoke by ionization from a radioactive source.  A strong near field will set
>> them off.  The good news is that this is your indication that all is not
>> right at the feed line (Or the antenna is unhealthy close).  I have had this
>> experience myself, fixed the feed line and the issue went away.   That was
>> with 100w on 80 meters.  Unlike real smoke, the detector will stop
>> complaining when the transmission stops.
>> -73-
>> Geoff W1GCF