In the parking lot at work, I get a very strong, 8 or 9 out of 9, X-Band signal on my new radar detector. It’s on a hilltop, but there are none of the usual suspects nearby that would give a false positive.
Any ideas?
The user manual for the Valentine One (which is what your new radar detector is, right?) lists “burglar alarms” as sharing the X-band frequency with door openers and speed radar. I believe some traffic signals also use X-band to detect when people are at the light so that it knows when a change is necessary (there’s at least one like that in my town).
However, just because you’re getting an 8 or 9 on the display doesn’t mean there are 8 or 9 actual sources. Your detector may be reading bounces of strong signals off nearby buildings as additional sources.
Ships will (generally) carry S-band and X-band RADAR. You near a waterway?
X-band Radar is between (roughly) 3GHz and 10GHz.
Here is a frequency allocation chart that covers the radio spectrum. If you look at the left half of the sixth row down, you see the X-band and a lot of radiolocation as well as fixed, mobile, and marine communications, and even some radioastronomy.
I have this printed out D-size on my office wall. It’s a great conversation piece. But you need an HP DesignJet or something similar to print it that big.