My inlaws just bought us a couple of new photoelectric smoke+fire detectors. They are both 9v battery powered First Alert model SA710CN. They are sensitive to RFI when I run 1KW. I did not have RFI w
Kelly, While I do not have info for you on RFI-proof smoke/fire detectors, I can tell you that at least 1, and possibly more than 1, semiconductor device is getting forward biased by your RF. Your op
I tried multiple bands and multiple beam headings today, in addition to trying 80m. I couldn't make the smoke detector "chirp" today. I have no idea why. I assume it won't happen again until the next
What else did you have hooked up uniquely for the contest? Something that was connected then, and not now, was coupling the signal into the detector wiring. I tried multiple bands and multiple beam h
Nothing was different AFAIK. The only difference I can think of is that I removed the battery (during the contest) and put it back in today. Oh well. It will probably come back at which point I can d
Were weather conditions different during the contest? I had severe problems with RF from 160m knocking my DSL connection off-line until I installed a filter. Now it is fine except when it rains. The
Why? There is a small opening to detect smoke. Simply shielding the remaining unit certainly doesn't void any "warranty". It may or may not be the solution but certainly a try. I never heard of this
I had the same problem with several CO detectors. I finally found a brand that did not have the problem from Kidde. The model number is KN-COB-B but it is a CO detector not a smoke detector. Tom W0IV
Ron, Since the quotation was from my posting, I'll answer the question. First, in most cases these days, merely opening up the housing of the detector is likely to void the warranty. (Replacing the b
Then shield the exterior... Sounds like a job for aluminum foil, scotch tape and a hole punch. Kurt _______________________________________________ RFI mailing list RFI@contesting.com http://lists.co
Since the quotation was from my posting, I'll answer the question. First, in most cases these days, merely opening up the housing of the detector is likely to void the warranty. (Replacing the batter