It is pretty easy to unplug the alarm and disconnect the battery terminals.
This will cause a temporary communication error with their monitoring system
and ADT will probably notify the contact person of the error by the app or
text. I have not noticed any RX RFI from any alarm system although decades
ago I had one that did not like transmitted RF.
John KK9A
Joseph Bouchard K1VW
Hi,
We have a club station at a museum and are chasing down RFI (KB1BSM). I
threw every breaker in the building with someone watching the panadapter.
It didn't kill the particular noise we are chasing, which shows an S9
harmonic about every 34khz on 20m.
Then someone said "we have an ADT security system with its own battery
backup." They think they can call ADT and get them to remotely shut it down
temporarily for a test, but I'm a little skeptical. if they are talking to
it remotely, it's not really dead is it? I tried to get a model number but
all I see is a red metal lock box with a little ground plane antenna, about
6" tall. I suspect it's a cellphone antenna. I don't expect that UHF radio
is causing us problems on HF, but the system of sensor could be noisy.
Anyway, my question for the group, are ADT security systems a known culprit
for RFI?
Thank you,
Joe K1VW
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