Neighbor's house alarm triggers when I put my car in reverse

Post by dredmorbius » Wed, Dec 20, 2017, 6:02 PM UTC

TeMPOraL wrote: post #137

mindcrime wrote: post #107

Earlier quoted context omitted.

It seems like a bit of a stretch, but in theory - depending on the details of the radio, and the power being emitted by the neighbor's station - you might be able to get some audio from a "powered off" radio. Maybe it's doing something like what happens when a crystal radio[1] absorbs enough power inductively to generate its audio. [1]: https://en.wikipedia.org/wiki/Crystal_radio

I've heard stories of unplugged loudspeakers turning into AM radios with enough power pumped into the air, so there's that too.

Post by JdeBP » Thu, Dec 21, 2017, 11:48 PM UTC

detaro wrote: post #262

roryisok wrote: post #260

Earlier quoted context omitted.

I've read this seven times now and I just can't understand it. Can you elaborate?

I assume it means that they neatly filed COMMAND.COM in folder "C", and AUTOEXEC.BAT in "A", ... No filesystem permissions or file locking to prevent you from ruining your system in DOS.

Post by acranox » Mon, Dec 25, 2017, 3:21 PM UTC

to3m wrote: post #58

derekp7 wrote: post #3

Earlier quoted context omitted.

I don't know, I would tend to side with the theory that the car engine sound at the specific RPM and power output matches the resonance frequency of one of the house windows. Resonance can creep up in many phenomena.

But the engine speed doesn't change until you lift the clutch. So if this were due to the RPM, putting it in reverse while stationary surely wouldn't do anything in particular.