So, I think I can help here.
The popo have "radar detector - detectors". This is an electronic device with the purpose of "detecting" the radar detectors on vehicles. They sniff for the RF, or IR, signals emitting from the radar detectors installed on the vehicle, and that's how they find them if they not seeing it visually (because it's hidden).
Some Radar detectors are pretty good at shielding their internal signals from "detector -detectors", others, not so much. This is where you get what you pay for...
From what I've read so far, it sound like owning / operating a radar detector is a fine, and confiscation, but not a criminal offense.
Now, there's another class of equipment for you: Jammers. *Radar* jammers are illegal everywhere, and they are criminal offense everywhere. This equipment will "jam" an RF emitter from clocking you.
There is also a newer device recently available, a Laser jammer. *Laser* jammers are not criminal in the US., but I dont know about Canada. They might be criminal there...
Laser jammers "jam" the non-eye-visible wavelength emitter type of speed gun. (I forget the exact wavelength).
Laser jammers emit back to the speed gun, so they're definitely detectable, if the popo have the laser detector -detector.
All these devices (radar and laser) are becoming moot, in my opinion. This is because of the proliferation of side and front rf and laser emitters on newer cars. The devices that actively detect lane departure, and braking distance, all operate in the same frequency bands. That means a bunch of false alarms.
This is also where you get what you pay for, low false alarm rates.
Scotty has an integrated system: A radar / laser detector, and laser jammer, and a really good one. Its about 1100.00 retail, last I looked, for the entire suite.
I like the latest Escort integrated system, but at $1400.00 installed, it's too much for me to justify.
Tho, from what I've read here, since these devices still real-world do work, Im mullin' it again.
Hope this helps,
Bob
2012 Blue ZX-14R, Cox rad guard, Skene Design P3 Lighting, Knight Design 1" lowering pegs, Grip Puppies, BrakeAway, Cortech Sport tailbag, GSG MotoTech Frame sliders, Stebel Compact horn.