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originally posted by: LookingAtMars
originally posted by: NoCorruptionAllowed
I remember a couple grocery stores back years ago that used a RADAR band of RF to open main doors automatically, and this would trigger any RADAR detector, as it did mine, the one I had in my car at the time.
Something like that could jam key fobs I bet.
They shut the power off to the store and the problem persisted. Good idea, but I think shutting the power off rules that out.
originally posted by: JHumm
That Marshall amp has a big magnet in it and that will make the tv act funny
originally posted by: LookingAtMars
originally posted by: schuyler
NOT A MYSTERY. In my area many times an aircraft carrier sails into port in Bremerton the key fobs fail to work. The car dealers are inundated with complaints. Finally someone remembers the Navy is responsible and calls them on it. They say they have no idea. The FCC gets involved and does an "investigation" for "unauthorized frequency use." The Navy says they have no idea, sorry. Then the fobs start working again.
The reason this happens is because some screw-up Chief forgot to turn off the electronic countermeasures so they are still spewing out interference on the low voltage frequencies. Had this happen to me at work. Drive home and the fob worked fine. Around here we treat the whole thing as a bit of a joke. Obviously no aircraft carriers where you are, but somebody has their countermeasures on. That's the issue.
STILL A MYSTERY. It could be electronic countermeasures based on your experience with the aircraft carrier. Why are electronic countermeasures being used in this small Alberta town? There is no military base near. If it is electronic countermeasures why have they been turned on for many weeks, even after the problem became known throughout this small Alberta town? If this is true, it is just as big a mystery or maybe even bigger.
originally posted by: dubiousatworst
Or it could be a simple spark gap that formed from some loose electrical wire connections. I could see it being something like the wire in a light post in the parking lot causing it. Enough energy to block the low range of keyfobs, not enough energy to block out cellphones.
in my opinion something as simple as that seems more likely than malicious intent, as a "spark gap" sends out signals at all frequencies, but is of a low enough power that it isn't noticeable to higher power devices.
and a link to wikipedia on what a spark gap is when relating to RF
sometimes it is the simplest things that are the root cause of problems due to unforeseen failure modes. Im wracking my brain for the name of the theory's name. Something about complex mechanical actions only being able to undo themselves but not re-do the process.
originally posted by: LordAhriman
The air force is currently testing various drone interception programs that can mess with various signals. Here I don't think it messed with fobs, but we had a lot of trouble with phone signal and wifi for a few days. Probably part of the same tests.
After investigation it was determined that there was faulty consumer electronic equipment stuck in transmit mode in the area, which was causing the interference.
A spokesperson with Innovation, Science and Economic Development Canada had more details.
"In this case, it was determined that it was a remote car starter. It has since been deactivated and the interference has stopped," Hans Parmar said, in an emailed response to CBC News late Friday.
"We want to communicate that this was not the result of any intentional criminal activity, or any other activity that was speculated."