First off, I wanted to start by saying that I just recently purchased a new radar detector.
It's a Cobra XRS 878. And by looking around the site, it's probably not that great of a detector. Paid like $65 for it online, but I can still return it, and may depending on my feedback.
I have found that whenever I am leaving my place of work, (which has automatic doors) that I get a KA alert, that goes from a level 1 to a level 2 (out of 5). Once I leave the parking lot the alert goes off, but comes back on maybe a 1/8 mile down the road. I get this alert almost all the way home. I have turned my detector on and off, and it picks up a KA level 2 immediately once turned back on. When I take the detector off , and sit it in my seat, the alert goes away, then upon placing it back on the dash, right back on again.
Is this a signal possibly from a Comm. Tower? This happens every time I leave work, but not on my way to work. The detector seems to work, and I have been tagged by a cop once or twice so far. But perhaps the detector is malfunctioning.
And perhaps some suggestion on a decent detector would be nice too.