Hello everyone,
This is an interesting puzzle that I can't explain so hopefully the bright people of s.e.d can help illuminate the situation.
Last night, as I'm laying in my bed and reading Rich Lyons DSP book to refresh my mind on some fundamental DSP issues my Labrador Retriever dog comes up beside the bed and is looking for his nightly "Good Night". This is all usual and predictable. At the same time we have a baby monitor running so that we can hear our 4 month old in another room.
So here's the wierd part: As I'm laying on my bed any time I touched the dog sitting on the floor to pet him there was static in the baby monitor. I experimented for a long time to see if I could get any more information: Every time my hand came in contact with his fur there was static in the baby monitor.
I couldn't really come up with any explanation outside of my dog somehow being an RF transmitter and me acting as an antenna. As much as that may explain it I don't think that is what is happening.
Here are a few physical details about the setup: The baby monitor transmitter is south of me by about 10' through a wood studded wall with drywall on both side. About 10' to the north of me is the receiver. Both the transmitter and receiver are powered from the same 110VAC circuit and have thus have the same ground. The only other metal I can think of in the equation is the springs in the bed I was laying on. The baby monitor also has a pad that detects movement and breathing and sets an alarm when these stop. I'm not sure what technology that is using.
So does anyone have any thoughts as to what was happening?
Cheers,
James.