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RFI - Smoke Detectors

Aug 28th 2012, 17:15


Joined: Nov 8th 2011, 02:48
Total Topics: 0
Total Posts: 0
I have a smoke detector operating on 120v.a.c. that is positioned on a ceiling approximately 4' below a G5RV antenna on a transmitter operating at 100 watts. The smoke detector has given me a false alarm twice in a period of 3 hours at a time when i was on the air.

Is is possible that i have RFI affecting the smoke detector?


Bob Collier
Aug 28th 2012, 21:59


Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
I have a CO2 detector that is very sensitive to 40 M operations, but my smoke detectors are OK. Yes, your signal is probably causing the false alarms. You might be able to shield them or move them to a more favorable location, or install an AC line filter. (Or move your antenna or feedline!)

73 Martin AA6E

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